// Copyright (c) 2015 The btcsuite developers
// Copyright (c) 2015-2023 The Decred developers
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.

package rpcserver

import (
	"errors"
	"sort"
	"strings"
	"sync"

	"github.com/decred/dcrd/dcrjson/v4"
	"github.com/decred/dcrd/rpc/jsonrpc/types/v4"
)

// helpDescsEnUS defines the English descriptions used for the help strings.
var helpDescsEnUS = map[string]string{
	// DebugLevelCmd help.
	"debuglevel--synopsis": "Dynamically changes the debug logging level.\n" +
		"The levelspec can either a debug level or of the form:\n" +
		"<subsystem>=<level>,<subsystem2>=<level2>,...\n" +
		"The valid debug levels are trace, debug, info, warn, error, and critical.\n" +
		"The valid subsystems are AMGR, ADXR, BCDB, DCRD, CHAN, DISC, PEER, RPCS, SCRP, SRVR, SYNC, and TXMP.\n" +
		"Finally the keyword 'show' will return a list of the available subsystems.",
	"debuglevel-levelspec":   "The debug level(s) to use or the keyword 'show'",
	"debuglevel--condition0": "levelspec!=show",
	"debuglevel--condition1": "levelspec=show",
	"debuglevel--result0":    "The string 'Done.'",
	"debuglevel--result1":    "The list of subsystems",

	// AddNodeCmd help.
	"addnode--synopsis": "Attempts to add or remove a persistent peer.",
	"addnode-addr":      "IP address and port of the peer to operate on",
	"addnode-subcmd":    "'add' to add a persistent peer, 'remove' to remove a persistent peer, or 'onetry' to try a single connection to a peer",

	// NodeCmd help.
	"node--synopsis":     "Attempts to add or remove a peer.",
	"node-subcmd":        "'disconnect' to remove all matching non-persistent peers, 'remove' to remove a persistent peer, or 'connect' to connect to a peer",
	"node-target":        "Either the IP address and port of the peer to operate on, or a valid peer ID.",
	"node-connectsubcmd": "'perm' to make the connected peer a permanent one, 'temp' to try a single connect to a peer",

	// TransactionInput help.
	"transactioninput-amount": "The previous output amount in coins",
	"transactioninput-txid":   "The hash of the input transaction",
	"transactioninput-vout":   "The specific output of the input transaction to redeem",
	"transactioninput-tree":   "The tree that the transaction input is located",
	// TODO review cmd help messages for stake stuff
	// CreateRawSSTxCmd help.
	"createrawsstx--synopsis": "Returns a new transaction spending the provided inputs and sending to the provided addresses.\n" +
		"The transaction inputs are not signed in the created transaction.\n" +
		"The signrawtransaction RPC command provided by wallet must be used to sign the resulting transaction.",
	"createrawsstx--result0":      "Hex-encoded bytes of the serialized transaction",
	"createrawsstx-inputs":        "The inputs to the transaction",
	"sstxinput-txid":              "Unspent tx output hash",
	"sstxinput-vout":              "Index of the output being redeemed",
	"sstxinput-amt":               "Amount of utxo in atoms",
	"sstxinput-tree":              "Which tree utxo is located",
	"createrawsstx-amount":        "JSON object with the destination address as key and amount as value",
	"createrawsstx-amount--key":   "address",
	"createrawsstx-amount--value": "n",
	"createrawsstx-amount--desc":  "The destination address as the key and the amount in atoms as the value",
	"createrawsstx-couts":         "Array of sstx commit outs to use",
	"sstxcommitout-addr":          "Address to send sstx commit",
	"sstxcommitout-commitamt":     "Amount to commit in atoms",
	"sstxcommitout-changeamt":     "Amount for change in atoms",
	"sstxcommitout-changeaddr":    "Address for change",

	// CreateRawSSRTxCmd help.
	"createrawssrtx--synopsis": "Returns a new transaction spending the provided inputs and sending to the provided addresses.\n" +
		"The transaction inputs are not signed in the created transaction.\n" +
		"The signrawtransaction RPC command provided by wallet must be used to sign the resulting transaction.",
	"createrawssrtx--result0": "Hex-encoded bytes of the serialized transaction",
	"createrawssrtx-inputs":   "The input to the transaction",
	"createrawssrtx-fee":      "The fee to apply to the revocation in coins",

	// CreateRawTransactionCmd help.
	"createrawtransaction--synopsis": "Returns a new transaction spending the provided inputs and sending to the provided addresses.\n" +
		"The transaction inputs are not signed in the created transaction.\n" +
		"The signrawtransaction RPC command provided by wallet must be used to sign the resulting transaction.",
	"createrawtransaction-inputs":         "The inputs to the transaction",
	"createrawtransaction-amounts":        "JSON object with the destination addresses as keys and amounts as values",
	"createrawtransaction-amounts--key":   "address",
	"createrawtransaction-amounts--value": "n.nnn",
	"createrawtransaction-amounts--desc":  "The destination address as the key and the amount in coins as the value",
	"createrawtransaction-locktime":       "Locktime value; a non-zero value will also locktime-activate the inputs",
	"createrawtransaction-expiry":         "Expiry value; a non-zero value when the transaction expiry",
	"createrawtransaction--result0":       "Hex-encoded bytes of the serialized transaction",

	// ScriptSig help.
	"scriptsig-asm": "Disassembly of the script",
	"scriptsig-hex": "Hex-encoded bytes of the script",

	// PrevOut help.
	"prevout-addresses": "previous output addresses",
	"prevout-value":     "previous output value",

	// VinPrevOut help.
	"vinprevout-coinbase":      "The hex-encoded bytes of the signature script (coinbase txns only)",
	"vinprevout-stakebase":     "The hex-encoded bytes of the signature script (vote txns only)",
	"vinprevout-treasurybase":  "Whether or not the input is a treasury base (treasurybase txns only)",
	"vinprevout-treasuryspend": "The hex-encoded bytes of the signature script (treasury spend txns only)",
	"vinprevout-txid":          "The hash of the origin transaction (non-coinbase txns only)",
	"vinprevout-vout":          "The index of the output being redeemed from the origin transaction (non-coinbase txns only)",
	"vinprevout-tree":          "The transaction tree of the origin transaction (non-coinbase txns only)",
	"vinprevout-amountin":      "The amount in for this transaction input, in coins",
	"vinprevout-blockheight":   "The height of the block that includes the origin transaction (non-coinbase txns only)",
	"vinprevout-blockindex":    "The merkle tree index of the origin transaction (non-coinbase txns only)",
	"vinprevout-scriptSig":     "The signature script used to redeem the origin transaction as a JSON object (non-coinbase txns only)",
	"vinprevout-prevOut":       "Data from the origin transaction output with index vout.",
	"vinprevout-sequence":      "The script sequence number",

	// Vin help.
	"vin-coinbase":      "The hex-encoded bytes of the signature script (coinbase txns only)",
	"vin-stakebase":     "The hex-encoded bytes of the signature script (vote txns only)",
	"vin-treasurybase":  "Whether or not the input is a treasury base (treasurybase txns only)",
	"vin-treasuryspend": "The hex-encoded bytes of the signature script (treasury spend txns only)",
	"vin-txid":          "The hash of the origin transaction (non-coinbase txns only)",
	"vin-vout":          "The index of the output being redeemed from the origin transaction (non-coinbase txns only)",
	"vin-scriptSig":     "The signature script used to redeem the origin transaction as a JSON object (non-coinbase txns only)",
	"vin-sequence":      "The script sequence number",
	"vin-tree":          "The tree of the transaction",
	"vin-blockindex":    "The block idx of the origin transaction",
	"vin-blockheight":   "The block height of the origin transaction",
	"vin-amountin":      "The amount in",

	// ScriptPubKeyResult help.
	"scriptpubkeyresult-asm":       "Disassembly of the script",
	"scriptpubkeyresult-hex":       "Hex-encoded bytes of the script",
	"scriptpubkeyresult-reqSigs":   "The number of required signatures",
	"scriptpubkeyresult-type":      "The type of the script (e.g. 'pubkeyhash')",
	"scriptpubkeyresult-addresses": "The Decred addresses associated with this script",
	"scriptpubkeyresult-commitamt": "The ticket commitment value if the script is for a staking commitment",
	"scriptpubkeyresult-version":   "The script version",

	// Vout help.
	"vout-value":        "The amount in DCR",
	"vout-n":            "The index of this transaction output",
	"vout-version":      "The version of the public key script",
	"vout-scriptPubKey": "The public key script used to pay coins as a JSON object",

	// TxRawDecodeResult help.
	"txrawdecoderesult-txid":     "The hash of the transaction",
	"txrawdecoderesult-version":  "The transaction version",
	"txrawdecoderesult-locktime": "The transaction lock time",
	"txrawdecoderesult-vin":      "The transaction inputs as JSON objects",
	"txrawdecoderesult-vout":     "The transaction outputs as JSON objects",
	"txrawdecoderesult-expiry":   "The transaction expiry",

	// DecodeRawTransactionCmd help.
	"decoderawtransaction--synopsis": "Returns a JSON object representing the provided serialized, hex-encoded transaction.",
	"decoderawtransaction-hextx":     "Serialized, hex-encoded transaction",

	// DecodeScriptResult help.
	"decodescriptresult-asm":       "Disassembly of the script",
	"decodescriptresult-reqSigs":   "The number of required signatures",
	"decodescriptresult-type":      "The type of the script (e.g. 'pubkeyhash')",
	"decodescriptresult-addresses": "The Decred addresses associated with this script",
	"decodescriptresult-p2sh":      "The script hash for use in pay-to-script-hash transactions (only present if the provided redeem script is not already a pay-to-script-hash script)",

	// DecodeScriptCmd help.
	"decodescript--synopsis": "Returns a JSON object with information about the provided hex-encoded script.",
	"decodescript-hexscript": "Hex-encoded script",
	"decodescript-version":   "The script version, defaults to version 0 if not set.",

	// ExistsAddressCmd help.
	"existsaddress--synopsis": "Test for the existence of the provided address",
	"existsaddress-address":   "The address to check",
	"existsaddress--result0":  "Bool showing if address exists or not",

	// ExistsAddressesCmd help.
	"existsaddresses--synopsis": "Test for the existence of the provided addresses in the blockchain or memory pool",
	"existsaddresses-addresses": "The addresses to check",
	"existsaddresses--result0":  "Bitset of bools showing if addresses exist or not",

	// ExistsLiveTicketCmd help.
	"existsliveticket--synopsis": "Test for the existence of the provided ticket",
	"existsliveticket-txhash":    "The ticket hash to check",
	"existsliveticket--result0":  "Bool showing if address exists in the live ticket database or not",

	// ExistsLiveTicketsCmd help.
	"existslivetickets--synopsis": "Test for the existence of the provided tickets in the live ticket map",
	"existslivetickets-txhashes":  "Array of hashes to check",
	"existslivetickets--result0":  "Bool blob showing if ticket exists in the live ticket database or not",

	// ExistsMempoolTxsCmd help.
	"existsmempooltxs--synopsis": "Test for the existence of the provided txs in the mempool",
	"existsmempooltxs-txhashes":  "Array of hashes to check",
	"existsmempooltxs--result0":  "Bool blob showing if txs exist in the mempool or not",

	// GenerateCmd help
	"generate--synopsis": "Generates a set number of blocks (simnet or regtest only) and returns a JSON\n" +
		" array of their hashes.",
	"generate-numblocks": "Number of blocks to generate",
	"generate--result0":  "The hashes, in order, of blocks generated by the call",

	// GetAddedNodeInfoResultAddr help.
	"getaddednodeinforesultaddr-address":   "The ip address for this DNS entry",
	"getaddednodeinforesultaddr-connected": "The connection 'direction' (inbound/outbound/false)",

	// GetAddedNodeInfoResult help.
	"getaddednodeinforesult-addednode": "The ip address or domain of the added peer",
	"getaddednodeinforesult-connected": "Whether or not the peer is currently connected",
	"getaddednodeinforesult-addresses": "DNS lookup and connection information about the peer",

	// GetAddedNodeInfo help.
	"getaddednodeinfo--synopsis":   "Returns information about manually added (persistent) peers.",
	"getaddednodeinfo-dns":         "Specifies whether the returned data is a JSON object including DNS and connection information, or just a list of added peers",
	"getaddednodeinfo-node":        "Only return information about this specific peer instead of all added peers",
	"getaddednodeinfo--condition0": "dns=false",
	"getaddednodeinfo--condition1": "dns=true",
	"getaddednodeinfo--result0":    "List of added peers",

	// GetBestBlockResult help.
	"getbestblockresult-hash":   "Hex-encoded bytes of the best block hash",
	"getbestblockresult-height": "Height of the best block",

	// GetBestBlockCmd help.
	"getbestblock--synopsis": "Get block height and hash of best block in the main chain.",
	"getbestblock--result0":  "Get block height and hash of best block in the main chain.",

	// GetBestBlockHashCmd help.
	"getbestblockhash--synopsis": "Returns the hash of the best (most recent) block in the longest block chain.",
	"getbestblockhash--result0":  "The hex-encoded block hash",

	// GetBlockCmd help.
	"getblock--synopsis":   "Returns information about a block given its hash.",
	"getblock-hash":        "The hash of the block",
	"getblock-verbose":     "Specifies the block is returned as a JSON object instead of hex-encoded string",
	"getblock-verbosetx":   "Specifies that each transaction is returned as a JSON object and only applies if the verbose flag is true (dcrd extension)",
	"getblock--condition0": "verbose=false",
	"getblock--condition1": "verbose=true",
	"getblock--result0":    "Hex-encoded bytes of the serialized block",

	// GetBlockchainInfoCmd help.
	"getblockchaininfo--synopsis": "Returns information about the current state of the block chain.",

	// GetBlockchainInfoResult help.
	"getblockchaininforesult-chain":                "The current network name.",
	"getblockchaininforesult-blocks":               "The number of blocks in the current best chain.",
	"getblockchaininforesult-headers":              "The number of validated block headers that comprise the target best chain.",
	"getblockchaininforesult-syncheight":           "The latest known block height being synced to.",
	"getblockchaininforesult-bestblockhash":        "The block hash of the current best chain tip.",
	"getblockchaininforesult-difficulty":           "(DEPRECATED) The current network difficulty.",
	"getblockchaininforesult-difficultyratio":      "The current proof-of-work difficulty as a multiple of the minimum difficulty.",
	"getblockchaininforesult-verificationprogress": "The chain verification progress estimate.",
	"getblockchaininforesult-chainwork":            "Hex encoded total work done for the chain.",
	"getblockchaininforesult-initialblockdownload": "Best guess of whether this node is in the initial block download mode used to catch up the chain when it is far behind",
	"getblockchaininforesult-maxblocksize":         "The maximum allowed block size.",
	"getblockchaininforesult-deployments":          "Network consensus deployments.",
	"getblockchaininforesult-deployments--desc":    "Consensus deployment agendas.",
	"getblockchaininforesult-deployments--key":     "The consensus deployment agenda id.",
	"getblockchaininforesult-deployments--value":   "The consensus deployment agenda information.",

	// AgendaInfo help.
	"agendainfo-status":     "The deployment agenda's current status.",
	"agendainfo-since":      "The block height of the first block to which the status applies.",
	"agendainfo-starttime":  "The start time of the voting period for the agenda.",
	"agendainfo-expiretime": "The expiry time of the voting period for the agenda.",

	// TxRawResult help.
	"txrawresult-hex":           "Hex-encoded transaction",
	"txrawresult-txid":          "The hash of the transaction",
	"txrawresult-version":       "The transaction version",
	"txrawresult-locktime":      "The transaction lock time",
	"txrawresult-vin":           "The transaction inputs as JSON objects",
	"txrawresult-vout":          "The transaction outputs as JSON objects",
	"txrawresult-blockhash":     "The hash of the block that contains the transaction",
	"txrawresult-confirmations": "Number of confirmations of the block",
	"txrawresult-time":          "Transaction time in seconds since 1 Jan 1970 GMT",
	"txrawresult-blocktime":     "Block time in seconds since the 1 Jan 1970 GMT",
	"txrawresult-blockindex":    "The index within the array of transactions contained by the block",
	"txrawresult-blockheight":   "The height of the block that contains the transaction",
	"txrawresult-expiry":        "The transacion expiry",

	// GetBlockVerboseResult help.
	"getblockverboseresult-hash":              "The hash of the block (same as provided)",
	"getblockverboseresult-powhash":           "The Proof-of-Work hash of the block (same as hash prior to DCP0011 activation)",
	"getblockverboseresult-confirmations":     "The number of confirmations",
	"getblockverboseresult-size":              "The size of the block",
	"getblockverboseresult-height":            "The height of the block in the block chain",
	"getblockverboseresult-version":           "The block version",
	"getblockverboseresult-merkleroot":        "Root hash of the merkle tree",
	"getblockverboseresult-tx":                "The transaction hashes (only when verbosetx=false)",
	"getblockverboseresult-rawtx":             "The transactions as JSON objects (only when verbosetx=true)",
	"getblockverboseresult-time":              "The block time in seconds since 1 Jan 1970 GMT",
	"getblockverboseresult-mediantime":        "The median block time over the last 11 blocks",
	"getblockverboseresult-nonce":             "The block nonce",
	"getblockverboseresult-bits":              "The bits which represent the block difficulty",
	"getblockverboseresult-difficulty":        "The proof-of-work difficulty as a multiple of the minimum difficulty",
	"getblockverboseresult-chainwork":         "The total number of hashes expected to produce the chain up to the block in hex",
	"getblockverboseresult-previousblockhash": "The hash of the previous block",
	"getblockverboseresult-nextblockhash":     "The hash of the next block (only if there is one)",
	"getblockverboseresult-sbits":             "The stake difficulty of the block",
	"getblockverboseresult-poolsize":          "The size of the live ticket pool",
	"getblockverboseresult-revocations":       "The number of revocations in the block",
	"getblockverboseresult-freshstake":        "The number of new tickets in the block",
	"getblockverboseresult-voters":            "The number votes in the block",
	"getblockverboseresult-votebits":          "The block's voting results",
	"getblockverboseresult-rawstx":            "The block's raw sstx hashes the were included",
	"getblockverboseresult-stx":               "The block's sstx hashes the were included",
	"getblockverboseresult-stakeroot":         "The block's sstx hashes the were included",
	"getblockverboseresult-finalstate":        "The block's finalstate",
	"getblockverboseresult-extradata":         "Extra data field for the requested block",
	"getblockverboseresult-stakeversion":      "Stake Version of the block",

	// GetBlockCountCmd help.
	"getblockcount--synopsis": "Returns the number of blocks in the longest block chain.",
	"getblockcount--result0":  "The current block count",

	// GetBlockHashCmd help.
	"getblockhash--synopsis": "Returns hash of the block in best block chain at the given height.",
	"getblockhash-index":     "The block height",
	"getblockhash--result0":  "The block hash",

	// GetBlockHeaderCmd help.
	"getblockheader--synopsis":   "Returns information about a block header given its hash.",
	"getblockheader-hash":        "The hash of the block",
	"getblockheader-verbose":     "Specifies the block header is returned as a JSON object instead of hex-encoded string",
	"getblockheader--condition0": "verbose=false",
	"getblockheader--condition1": "verbose=true",
	"getblockheader--result0":    "The serialized block header.",

	// GetBlockHeaderVerboseResult help.
	"getblockheaderverboseresult-hash":              "The hash of the block (same as provided)",
	"getblockheaderverboseresult-powhash":           "The Proof-of-Work hash of the block (same as hash prior to DCP0011 activation)",
	"getblockheaderverboseresult-confirmations":     "The number of confirmations",
	"getblockheaderverboseresult-height":            "The height of the block in the block chain",
	"getblockheaderverboseresult-version":           "The block version",
	"getblockheaderverboseresult-merkleroot":        "The merkle root of the regular transaction tree",
	"getblockheaderverboseresult-time":              "The block time in seconds since 1 Jan 1970 GMT",
	"getblockheaderverboseresult-mediantime":        "The median block time over the last 11 blocks",
	"getblockheaderverboseresult-nonce":             "The block nonce",
	"getblockheaderverboseresult-bits":              "The bits which represent the block difficulty",
	"getblockheaderverboseresult-difficulty":        "The proof-of-work difficulty as a multiple of the minimum difficulty",
	"getblockheaderverboseresult-chainwork":         "The total number of hashes expected to produce the chain up to the block in hex",
	"getblockheaderverboseresult-previousblockhash": "The hash of the previous block",
	"getblockheaderverboseresult-nextblockhash":     "The hash of the next block (only if there is one)",
	"getblockheaderverboseresult-size":              "The size of the block in bytes",
	"getblockheaderverboseresult-sbits":             "The stake difficulty in coins",
	"getblockheaderverboseresult-poolsize":          "The size of the live ticket pool",
	"getblockheaderverboseresult-revocations":       "The number of revocations in the block",
	"getblockheaderverboseresult-freshstake":        "The number of new tickets in the block",
	"getblockheaderverboseresult-voters":            "The number of votes in the block",
	"getblockheaderverboseresult-finalstate":        "The final state value of the ticket pool",
	"getblockheaderverboseresult-votebits":          "The vote bits",
	"getblockheaderverboseresult-stakeroot":         "The merkle root of the stake transaction tree",
	"getblockheaderverboseresult-extradata":         "Extra data field for the requested block",
	"getblockheaderverboseresult-stakeversion":      "The stake version of the block",

	// GetBlockSubsidyCmd help.
	"getblocksubsidy--synopsis": "Returns information regarding subsidy amounts.",
	"getblocksubsidy-height":    "The block height",
	"getblocksubsidy-voters":    "The number of voters",

	// GetBlockSubsidyResult help.
	"getblocksubsidyresult-developer": "The developer subsidy",
	"getblocksubsidyresult-pos":       "The Proof-of-Stake subsidy",
	"getblocksubsidyresult-pow":       "The Proof-of-Work subsidy",
	"getblocksubsidyresult-total":     "The total subsidy",

	// GetCFilterV2Cmd help.
	"getcfilterv2--synopsis": "Returns the version 2 block filter for the given block along with a proof that can be used to prove the filter is committed to by the block header",
	"getcfilterv2-blockhash": "The block hash of the filter to retrieve",

	// GetCFilterV2Result help.
	"getcfilterv2result-blockhash":   "The block hash for which the filter includes data",
	"getcfilterv2result-data":        "Hex-encoded bytes of the serialized filter",
	"getcfilterv2result-proofindex":  "The index of the leaf that represents the filter hash in the header commitment",
	"getcfilterv2result-proofhashes": "The hashes needed to prove the filter is committed to by the header commitment",

	// GetChainTips help.
	"getchaintips--synopsis": "Returns information about all known chain tips the in the block tree.\n\n" +
		"The statuses in the result have the following meanings:\n" +
		"active: The current best chain tip.\n" +
		"invalid: The block or one of its ancestors is invalid.\n" +
		"headers-only: The block or one of its ancestors does not have the full block data available which also means the block can't be validated or connected.\n" +
		"valid-fork: The block is fully validated which implies it was probably part of the main chain at one point and was reorganized.\n" +
		"valid-headers: The full block data is available and the header is valid, but the block was never validated which implies it was probably never part of the main chain.",

	// GetChainTipsResult help.
	"getchaintipsresult-height":    "The height of the chain tip",
	"getchaintipsresult-hash":      "The block hash of the chain tip",
	"getchaintipsresult-branchlen": "The length of the branch that connects the tip to the main chain (0 for the main chain tip)",
	"getchaintipsresult-status":    "The status of the chain (active, invalid, headers-only, valid-fork, valid-headers)",
	"getchaintipsresults--result0": "test",

	// GetConnectionCountCmd help.
	"getconnectioncount--synopsis": "Returns the number of active connections to other peers.",
	"getconnectioncount--result0":  "The number of connections",

	// GetCurrentNetCmd help.
	"getcurrentnet--synopsis": "Get Decred network the server is running on.",
	"getcurrentnet--result0":  "The network identifier",

	// GetDifficultyCmd help.
	"getdifficulty--synopsis": "Returns the proof-of-work difficulty as a multiple of the minimum difficulty.",
	"getdifficulty--result0":  "The difficulty",

	// GetStakeDifficultyCmd help.
	"getstakedifficulty--synopsis":     "Returns the proof-of-stake difficulty.",
	"getstakedifficultyresult-current": "The current top block's stake difficulty",
	"getstakedifficultyresult-next":    "The calculated stake difficulty of the next block",

	// GetStakeVersionInfoCmd help.
	"getstakeversioninfo--synopsis":           "Returns stake version statistics for one or more stake version intervals.",
	"getstakeversioninfo-count":               "Number of intervals to return.",
	"getstakeversioninforesult-currentheight": "Top of the chain height.",
	"getstakeversioninforesult-hash":          "Top of the chain hash.",
	"getstakeversioninforesult-intervals":     "Array of total stake and vote counts.",
	"versioncount-count":                      "Number of votes.",
	"versioncount-version":                    "Version of the vote.",
	"versioninterval-startheight":             "Start of the interval.",
	"versioninterval-endheight":               "End of the interval.",
	"versioninterval-voteversions":            "Tally of all vote versions.",
	"versioninterval-posversions":             "Tally of the stake versions.",

	// GetStakeDifficultyCmd help.
	"getstakeversions--synopsis":           "Returns the stake versions statistics.",
	"getstakeversions-hash":                "The start block hash.",
	"getstakeversions-count":               "The number of blocks that will be returned.",
	"getstakeversionsresult-stakeversions": "Array of stake versions per block.",
	"stakeversions-hash":                   "Hash of the block.",
	"stakeversions-height":                 "Height of the block.",
	"stakeversions-blockversion":           "The block version",
	"stakeversions-stakeversion":           "The stake version of the block",
	"stakeversions-votes":                  "The version and bits of each vote in the block",
	"versionbits-version":                  "The version of the vote.",
	"versionbits-bits":                     "The bits assigned by the vote.",

	// GetVoteInfo
	"getvoteinfo--synopsis":           "Returns the vote info statistics.",
	"getvoteinfo-version":             "The stake version.",
	"getvoteinforesult-currentheight": "Top of the chain height.",
	"getvoteinforesult-startheight":   "The start height of this voting window.",
	"getvoteinforesult-endheight":     "The end height of this voting window.",
	"getvoteinforesult-hash":          "The hash of the current height block.",
	"getvoteinforesult-voteversion":   "Selected vote version.",
	"getvoteinforesult-quorum":        "Minimum amount of votes required.",
	"getvoteinforesult-totalvotes":    "Total votes.",
	"getvoteinforesult-agendas":       "All agendas for this stake version.",
	"agenda-id":                       "Unique identifier of this agenda.",
	"agenda-description":              "Description of this agenda.",
	"agenda-mask":                     "Agenda mask.",
	"agenda-starttime":                "Time agenda becomes valid.",
	"agenda-expiretime":               "Time agenda becomes invalid.",
	"agenda-status":                   "Agenda status.",
	"agenda-quorumprogress":           "Progress of quorum reached.",
	"agenda-choices":                  "All choices in this agenda.",
	"choice-id":                       "Unique identifier of this choice.",
	"choice-description":              "Description of this choice.",
	"choice-bits":                     "Bits that identify this choice.",
	"choice-isabstain":                "This choice is to abstain from change.",
	"choice-isno":                     "Hard no choice (1 and only 1 per agenda).",
	"choice-count":                    "How many votes received.",
	"choice-progress":                 "Progress of the overall count.",

	// GetGenerateCmd help.
	"getgenerate--synopsis": "Returns if the server is set to generate coins (mine) or not.",
	"getgenerate--result0":  "True if mining, false if not",

	// GetHashesPerSecCmd help.
	"gethashespersec--synopsis": "Returns a recent hashes per second performance measurement while generating coins (mining).",
	"gethashespersec--result0":  "The number of hashes per second",

	// InfoChainResult help.
	"infochainresult-version":         "The version of the server",
	"infochainresult-protocolversion": "The latest supported protocol version",
	"infochainresult-blocks":          "The number of blocks processed",
	"infochainresult-timeoffset":      "The time offset",
	"infochainresult-connections":     "The number of connected peers",
	"infochainresult-proxy":           "The proxy used by the server",
	"infochainresult-difficulty":      "The current target difficulty",
	"infochainresult-testnet":         "Whether or not server is using testnet",
	"infochainresult-relayfee":        "The minimum relay fee for transactions in DCR/KB",
	"infochainresult-errors":          "Any current errors",
	"infochainresult-txindex":         "Whether or not server has transaction index enabled",

	// GetHeadersCmd help.
	"getheaders--synopsis":     "Returns block headers starting with the first known block hash from the request",
	"getheaders-blocklocators": "Array of block locator hashes.  Headers are returned starting from the first known hash in this list",
	"getheaders-hashstop":      "Block hash to stop including block headers for. Set to zero to get as many blocks as possible",
	"getheadersresult-headers": "Serialized block headers of all located blocks, limited to some arbitrary maximum number of hashes (currently 2000, which matches the wire protocol headers message, but this is not guaranteed)",

	// GetInfoCmd help.
	"getinfo--synopsis": "Returns a JSON object containing various state info.",

	// GetMempoolInfoCmd help.
	"getmempoolinfo--synopsis": "Returns memory pool information",

	// GetMempoolInfoResult help.
	"getmempoolinforesult-bytes": "Size in bytes of the mempool",
	"getmempoolinforesult-size":  "Number of transactions in the mempool",

	// GetMiningInfoResult help.
	"getmininginforesult-blocks":           "Height of the latest best block",
	"getmininginforesult-currentblocksize": "Size of the latest best block",
	"getmininginforesult-currentblocktx":   "Number of transactions in the latest best block",
	"getmininginforesult-difficulty":       "Current target difficulty",
	"getmininginforesult-stakedifficulty":  "Stake difficulty required for the next block",
	"getmininginforesult-errors":           "Any current errors",
	"getmininginforesult-generate":         "Whether or not server is set to generate coins",
	"getmininginforesult-genproclimit":     "Number of processors to use for coin generation (-1 when disabled)",
	"getmininginforesult-hashespersec":     "Recent hashes per second performance measurement while generating coins",
	"getmininginforesult-networkhashps":    "Estimated network hashes per second for the most recent blocks",
	"getmininginforesult-pooledtx":         "Number of transactions in the memory pool",
	"getmininginforesult-testnet":          "Whether or not server is using testnet",

	// GetMiningInfoCmd help.
	"getmininginfo--synopsis": "Returns a JSON object containing mining-related information.",

	// GetNetworkHashPSCmd help.
	"getnetworkhashps--synopsis": "Returns the estimated network hashes per second for the block heights provided by the parameters.",
	"getnetworkhashps-blocks":    "The number of blocks or -1 for the default number of blocks",
	"getnetworkhashps-height":    "Perform estimate ending with this height or -1 for current best chain block height",
	"getnetworkhashps--result0":  "Estimated hashes per second",

	// GetNetworkInfoCmd help.
	"getnetworkinfo--synopsis": "Returns a JSON object containing network-related information.",

	// LocalAddressesResult help.
	"localaddressesresult-address": "The local address being listened on",
	"localaddressesresult-port":    "The port being listened on for the associated local address",
	"localaddressesresult-score":   "Reserved",

	// NetworksResult help.
	"networksresult-name":                      "The name of the network interface",
	"networksresult-limited":                   "True if only connections to the network are allowed",
	"networksresult-proxy":                     "The proxy set for the network",
	"networksresult-proxyrandomizecredentials": "True if randomized credentials are set for the proxy",
	"networksresult-reachable":                 "True if connections can be made to or from the network",

	// GetNetworkInfoResult help.
	"getnetworkinforesult-version":         "The version of the node as a numeric",
	"getnetworkinforesult-subversion":      "The subversion of the node, as advertised to peers",
	"getnetworkinforesult-protocolversion": "The protocol version of the node",
	"getnetworkinforesult-timeoffset":      "The node clock offset in seconds",
	"getnetworkinforesult-connections":     "The total number of open connections for the node",
	"getnetworkinforesult-networks":        "An array of objects describing IPV4, IPV6 and Onion network interface states",
	"getnetworkinforesult-relayfee":        "The minimum required transaction fee for the node.",
	"getnetworkinforesult-localaddresses":  "An array of objects describing local addresses being listened on by the node",
	"getnetworkinforesult-localservices":   "The services supported by the node, as advertised in its version message",

	// GetNetTotalsCmd help.
	"getnettotals--synopsis": "Returns a JSON object containing network traffic statistics.",

	// GetNetTotalsResult help.
	"getnettotalsresult-totalbytesrecv": "Total bytes received",
	"getnettotalsresult-totalbytessent": "Total bytes sent",
	"getnettotalsresult-timemillis":     "Number of milliseconds since 1 Jan 1970 GMT",

	// GetPeerInfoResult help.
	"getpeerinforesult-id":             "A unique node ID",
	"getpeerinforesult-addr":           "The ip address and port of the peer",
	"getpeerinforesult-addrlocal":      "Local address",
	"getpeerinforesult-services":       "Services bitmask which represents the services supported by the peer",
	"getpeerinforesult-relaytxes":      "Peer has requested transactions be relayed to it",
	"getpeerinforesult-lastsend":       "Time the last message was received in seconds since 1 Jan 1970 GMT",
	"getpeerinforesult-lastrecv":       "Time the last message was sent in seconds since 1 Jan 1970 GMT",
	"getpeerinforesult-bytessent":      "Total bytes sent",
	"getpeerinforesult-bytesrecv":      "Total bytes received",
	"getpeerinforesult-conntime":       "Time the connection was made in seconds since 1 Jan 1970 GMT",
	"getpeerinforesult-timeoffset":     "The time offset of the peer",
	"getpeerinforesult-pingtime":       "Number of microseconds the last ping took",
	"getpeerinforesult-pingwait":       "Number of microseconds a queued ping has been waiting for a response",
	"getpeerinforesult-version":        "The protocol version of the peer",
	"getpeerinforesult-subver":         "The user agent of the peer",
	"getpeerinforesult-inbound":        "Whether or not the peer is an inbound connection",
	"getpeerinforesult-startingheight": "The latest block height the peer knew about when the connection was established",
	"getpeerinforesult-currentheight":  "The current height of the peer",
	"getpeerinforesult-banscore":       "The ban score",
	"getpeerinforesult-syncnode":       "Whether or not the peer is the sync peer",

	// GetPeerInfoCmd help.
	"getpeerinfo--synopsis": "Returns data about each connected network peer as an array of json objects.",

	// GetRawMempoolVerboseResult help.
	"getrawmempoolverboseresult-size":             "Transaction size in bytes",
	"getrawmempoolverboseresult-fee":              "Transaction fee in decred",
	"getrawmempoolverboseresult-time":             "Local time transaction entered pool in seconds since 1 Jan 1970 GMT",
	"getrawmempoolverboseresult-height":           "Block height when transaction entered the pool",
	"getrawmempoolverboseresult-startingpriority": "(DEPRECATED) This field is always 0 and will be removed in a future version of the software",
	"getrawmempoolverboseresult-currentpriority":  "(DEPRECATED) This field is always 0 and will be removed in a future version of the software",
	"getrawmempoolverboseresult-depends":          "Unconfirmed transactions used as inputs for this transaction",

	// GetRawMempoolCmd help.
	"getrawmempool--synopsis":   "Returns information about all of the transactions currently in the memory pool.",
	"getrawmempool-verbose":     "Returns JSON object when true or an array of transaction hashes when false",
	"getrawmempool-txtype":      "Type of tx to return (regular/tickets/votes/revocations/tspend/tadd/all)",
	"getrawmempool--condition0": "verbose=false",
	"getrawmempool--condition1": "verbose=true",
	"getrawmempool--result0":    "Array of transaction hashes",

	// GetRawTransactionCmd help.
	"getrawtransaction--synopsis":   "Returns information about a transaction given its hash.",
	"getrawtransaction-txid":        "The hash of the transaction",
	"getrawtransaction-verbose":     "Specifies the transaction is returned as a JSON object instead of a hex-encoded string",
	"getrawtransaction--condition0": "verbose=false",
	"getrawtransaction--condition1": "verbose=true",
	"getrawtransaction--result0":    "Hex-encoded bytes of the serialized transaction",

	// GetTicketPoolValue help.
	"getticketpoolvalue--synopsis": "Return the current value of all locked funds in the ticket pool",
	"getticketpoolvalue--result0":  "Total value of ticket pool",

	// GetTreasuryBalanceResult help.
	"gettreasurybalanceresult-hash":    "Block hash",
	"gettreasurybalanceresult-height":  "Block height",
	"gettreasurybalanceresult-balance": "Treasury balance at this block",
	"gettreasurybalanceresult-updates": "Optional treasury updates that will be applied coinbase maturity from now",

	// GetTreasuryBalanceCmd help.
	"gettreasurybalance--synopsis":   "Returns treasury balance at the given hash.",
	"gettreasurybalance-hash":        "The hash of the block",
	"gettreasurybalance-verbose":     "Optionally returns the updates to the balance that will be applied coinbase maturity from now",
	"gettreasurybalance--condition0": "verbose=false",
	"gettreasurybalance--condition1": "verbose=true",

	// TreasurySpendVotes help.
	"treasuryspendvotes-hash":      "The hash of the tspend transaction",
	"treasuryspendvotes-expiry":    "The block height when the tspend expires",
	"treasuryspendvotes-votestart": "The block height when voting for the tspend starts",
	"treasuryspendvotes-voteend":   "The block height when voting for the tspend ends",
	"treasuryspendvotes-yesvotes":  "The number of yes votes the tspend received",
	"treasuryspendvotes-novotes":   "The number of no votes the tspend received",

	// GetTreasurySpendVotesResult help.
	"gettreasuryspendvotesresult-hash":   "The block hash for the last block where votes were tallied",
	"gettreasuryspendvotesresult-height": "The block height for the last block where votes were tallied",
	"gettreasuryspendvotesresult-votes":  "Vote counts for each tspend",

	// GetTreasurySpendCmd help.
	"gettreasuryspendvotes--synopsis": "Returns a tally of votes for a list of treasury spend transactions.",
	"gettreasuryspendvotes-block": "Count votes only up to the specified block.\n" +
		"If empty, count up to the current mainchain tip.",
	"gettreasuryspendvotes-tspends": "Count votes for the specified tspends.\n" +
		"If empty, count votes for all tspends currently in the mempool.",

	// GetTxOutResult help.
	"gettxoutresult-bestblock":     "The block hash that contains the transaction output",
	"gettxoutresult-confirmations": "The number of confirmations",
	"gettxoutresult-value":         "The transaction amount in DCR",
	"gettxoutresult-scriptPubKey":  "The public key script used to pay coins as a JSON object",
	"gettxoutresult-coinbase":      "Whether or not the transaction is a coinbase",

	// GetTxOutCmd help.
	"gettxout--synopsis":      "Returns information about an unspent transaction output.",
	"gettxout-txid":           "The hash of the transaction",
	"gettxout-vout":           "The index of the output",
	"gettxout-tree":           "The tree of the transaction",
	"gettxout-includemempool": "Include the mempool when true",

	// GetTxOutSetInfoCmd help.
	"gettxoutsetinfo--synopsis": "Returns statistics on current unspent transaction output set.",

	// GetTxOutSetInfoResult help.
	"gettxoutsetinforesult-height":         "The current block height.",
	"gettxoutsetinforesult-bestblock":      "The hex encoded hash of the best block.",
	"gettxoutsetinforesult-transactions":   "The number of unique transactions referenced by outputs.",
	"gettxoutsetinforesult-txouts":         "The number of transaction outputs.",
	"gettxoutsetinforesult-serializedhash": "The merklized hash of the utxo set.",
	"gettxoutsetinforesult-disksize":       "The size of the utxo set on disk, in bytes.",
	"gettxoutsetinforesult-totalamount":    "The total value of the utxo set.",

	// GetWorkResult help.
	"getworkresult-data":     "Hex-encoded block data",
	"getworkresult-hash1":    "(DEPRECATED) Hex-encoded formatted hash buffer",
	"getworkresult-midstate": "(DEPRECATED) Hex-encoded precomputed hash state after hashing first half of the data",
	"getworkresult-target":   "Hex-encoded little-endian hash target",

	// GetWorkCmd help.
	"getwork--synopsis":   "Returns formatted hash data to work on or checks and submits solved data.",
	"getwork-data":        "Hex-encoded data to check",
	"getwork--condition0": "no data provided",
	"getwork--condition1": "data provided",
	"getwork--result1":    "Whether or not the solved data is valid and was added to the chain",

	// HelpCmd help.
	"help--synopsis":   "Returns a list of all commands or help for a specified command.",
	"help-command":     "The command to retrieve help for",
	"help--condition0": "no command provided",
	"help--condition1": "command specified",
	"help--result0":    "List of commands",
	"help--result1":    "Help for specified command",

	// InvalidateBlockCmd help.
	"invalidateblock--synopsis": "Permanently invalidates a block as if it had violated consensus rules.\n" +
		"Use reconsiderblock to remove the invalid status.",
	"invalidateblock-blockhash": "The hash of the block to invalidate",

	// PingCmd help.
	"ping--synopsis": "Queues a ping to be sent to each connected peer.\n" +
		"Ping times are provided by getpeerinfo via the pingtime and pingwait fields.",

	// RebroadcastWinnersCmd help.
	"rebroadcastwinners--synopsis": "Asks the daemon to rebroadcast the winners of the voting lottery.",

	// ReconsiderBlockCmd help.
	"reconsiderblock--synopsis": "Reconsiders a block for validation and best chain selection by removing any invalid status from it and its ancestors.\n" +
		"Any descendants that are neither themselves marked as having failed validation, nor descendants of another such block, are also made eligibile for best chain selection.",
	"reconsiderblock-blockhash": "The hash of the block to reconsider",

	// SendRawTransactionCmd help.
	"sendrawtransaction--synopsis":     "Submits the serialized, hex-encoded transaction to the local peer and relays it to the network.",
	"sendrawtransaction-hextx":         "Serialized, hex-encoded signed transaction",
	"sendrawtransaction-allowhighfees": "Whether or not to allow insanely high fees (dcrd does not yet implement this parameter, so it has no effect)",
	"sendrawtransaction--result0":      "The hash of the transaction",

	// SetGenerateCmd help.
	"setgenerate--synopsis":    "Set the server to generate coins (mine) or not.",
	"setgenerate-generate":     "Use true to enable generation, false to disable it",
	"setgenerate-genproclimit": "The number of processors (cores) to limit generation to or -1 for default",

	// StopCmd help.
	"stop--synopsis": "Shutdown dcrd.",
	"stop--result0":  "The string 'dcrd stopping.'",

	// SubmitBlockOptions help.
	"submitblockoptions-workid": "This parameter is currently ignored",

	// SubmitBlockCmd help.
	"submitblock--synopsis":   "Attempts to submit a new serialized, hex-encoded block to the network.",
	"submitblock-hexblock":    "Serialized, hex-encoded block",
	"submitblock-options":     "This parameter is currently ignored",
	"submitblock--condition0": "Block successfully submitted",
	"submitblock--condition1": "Block rejected",
	"submitblock--result1":    "The reason the block was rejected",

	// ValidateAddressResult help.
	"validateaddresschainresult-isvalid": "Whether or not the address is valid",
	"validateaddresschainresult-address": "The Decred address (only when isvalid is true)",

	// ValidateAddressCmd help.
	"validateaddress--synopsis": "Verify an address is valid.",
	"validateaddress-address":   "Decred address to validate",

	// VerifyChainCmd help.
	"verifychain--synopsis": "Verifies the block chain database.\n" +
		"The actual checks performed by the checklevel parameter are implementation specific.\n" +
		"For dcrd this is:\n" +
		"checklevel=0 - Look up each block and ensure it can be loaded from the database.\n" +
		"checklevel=1 - Perform basic context-free sanity checks on each block.",
	"verifychain-checklevel": "How thorough the block verification is",
	"verifychain-checkdepth": "The number of blocks to check",
	"verifychain--result0":   "Whether or not the chain verified",

	// VerifyMessageCmd help.
	"verifymessage--synopsis": "Verify a signed message.",
	"verifymessage-address":   "The Decred address to use for the signature",
	"verifymessage-signature": "The base-64 encoded signature provided by the signer",
	"verifymessage-message":   "The signed message",
	"verifymessage--result0":  "Whether or not the signature verified",

	// -------- Websocket-specific help --------

	// Session help.
	"session--synopsis":       "Return details regarding a websocket client's current connection session.",
	"sessionresult-sessionid": "The unique session ID for a client's websocket connection.",

	// NotifyNewTicketsCmd help
	"notifynewtickets--synopsis": "Request notifications for whenever new tickets are found.",

	// NotifyWinningTicketsCmd help
	"notifywinningtickets--synopsis": "Request notifications for whenever any tickets are chosen to vote.",

	// NotifyBlocksCmd help.
	"notifyblocks--synopsis": "Request notifications for whenever a block is connected or disconnected from the main (best) chain.",

	// NotifyWorkCmd help.
	"notifywork--synopsis": "Request notifications for whenever a new block template is generated.",

	// StopNotifyBlocksCmd help.
	"stopnotifyblocks--synopsis": "Cancel registered notifications for whenever a block is connected or disconnected from the main (best) chain.",

	// StopNotifyWorkCmd help.
	"stopnotifywork--synopsis": "Cancel registered notifications for whenever a new block template is generated.",

	// NotifyTSpendCmd help.
	"notifytspend--synopsis": "Request notifications for whenever a new tspend arrives in the mempool.",

	// StopNotifyTSpendCmd help.
	"stopnotifytspend--synopsis": "Cancel registered notifications for whenever a new tspend arrives in the mempool.",

	// NotifyNewTransactionsCmd help.
	"notifynewtransactions--synopsis": "Send either a txaccepted or a txacceptedverbose notification when a new transaction is accepted into the mempool.",
	"notifynewtransactions-verbose":   "Specifies which type of notification to receive. If verbose is true, then the caller receives txacceptedverbose, otherwise the caller receives txaccepted",

	// StopNotifyNewTransactionsCmd help.
	"stopnotifynewtransactions--synopsis": "Stop sending either a txaccepted or a txacceptedverbose notification when a new transaction is accepted into the mempool.",

	// OutPoint help.
	"outpoint-hash":  "The hex-encoded bytes of the outpoint hash",
	"outpoint-index": "The index of the outpoint",
	"outpoint-tree":  "The tree of the outpoint",

	// LoadTxFilterCmd help.
	"loadtxfilter--synopsis": "Load, add to, or reload a websocket client's transaction filter for mempool transactions, new blocks and rescans.",
	"loadtxfilter-reload":    "Load a new filter instead of adding data to an existing one",
	"loadtxfilter-addresses": "Array of addresses to add to the transaction filter",
	"loadtxfilter-outpoints": "Array of outpoints to add to the transaction filter",

	// Rescan help.
	"rescan--synopsis":            "Rescan blocks for transactions matching the loaded transaction filter.",
	"rescan-blockhashes":          "Array of block hashes to rescan.  Each subsequent block after the first one must be a child of the previous.",
	"rescanresult-discovereddata": "The data matching the loaded transaction filter as JSON objects.",
	"rescannedblock-hash":         "The hash of the block containing matching transactions.",
	"rescannedblock-transactions": "Array of hex-encoded bytes of the serialized matching transactions.",

	// EstimateFee help.
	"estimatefee--synopsis": "Returns the estimated fee in dcr/kb.",
	"estimatefee-numblocks": "(unused)",
	"estimatefee--result0":  "Estimated fee.",

	// EstimateSmartFee help.
	"estimatesmartfee--synopsis":     "Returns the estimated fee using the historical fee data in dcr/kb.",
	"estimatesmartfee-confirmations": "Estimate the fee rate a transaction requires so that it is mined in up to this number of blocks.",
	"estimatesmartfee-mode":          "The only supported mode for the moment is 'conservative'.",
	"estimatesmartfeeresult-feerate": "The Estimated fee rate (in DCR/KB).",
	"estimatesmartfeeresult-errors":  "Unused.",
	"estimatesmartfeeresult-blocks":  "The block number where the estimate was found.",

	// EstimateStakeDiff help.
	"estimatestakediff--synopsis":      "Estimate the next minimum, maximum, expected, and user-specified stake difficulty",
	"estimatestakediff-tickets":        "Use this number of new tickets in blocks to estimate the next difficulty",
	"estimatestakediffresult-min":      "Minimum estimate for stake difficulty",
	"estimatestakediffresult-max":      "Maximum estimate for stake difficulty",
	"estimatestakediffresult-expected": "Expected estimate for stake difficulty",
	"estimatestakediffresult-user":     "Estimate for stake difficulty with the passed user amount of tickets",

	// GetCoinSupply help
	"getcoinsupply--synopsis": "Returns current total coin supply in atoms",
	"getcoinsupply--result0":  "Current coin supply in atoms",

	// LiveTickets help.
	"livetickets--synopsis":     "Returns live ticket hashes from the ticket database",
	"liveticketsresult-tickets": "List of live tickets",

	// TicketBuckets help.
	"ticketbuckets--synopsis": "Request for the number of tickets currently in each bucket of the ticket database.",
	"ticketbucket-tickets":    "Number of tickets in bucket.",
	"ticketbucket-number":     "Bucket number.",

	// TicketFeeInfo help.
	"ticketfeeinfo--synopsis":            "Get various information about ticket fees from the mempool, blocks, and difficulty windows (units: DCR/kB)",
	"ticketfeeinfo-blocks":               "The number of blocks, starting from the chain tip and descending, to return fee information about",
	"ticketfeeinfo-windows":              "The number of difficulty windows to return ticket fee information about",
	"ticketfeeinforesult-feeinfomempool": "Ticket fee information for all tickets in the mempool (units: DCR/kB)",
	"ticketfeeinforesult-feeinfoblocks":  "Ticket fee information for a given list of blocks descending from the chain tip (units: DCR/kB)",
	"ticketfeeinforesult-feeinfowindows": "Ticket fee information for a window period where the stake difficulty was the same (units: DCR/kB)",

	"feeinfomempool-number": "Number of transactions in the mempool",
	"feeinfomempool-min":    "Minimum transaction fee in the mempool",
	"feeinfomempool-max":    "Maximum transaction fee in the mempool",
	"feeinfomempool-mean":   "Mean of transaction fees in the mempool",
	"feeinfomempool-median": "Median of transaction fees in the mempool",
	"feeinfomempool-stddev": "Standard deviation of transaction fees in the mempool",

	"feeinfoblock-height": "Height of the block",
	"feeinfoblock-number": "Number of transactions in the block",
	"feeinfoblock-min":    "Minimum transaction fee in the block",
	"feeinfoblock-max":    "Maximum transaction fee in the block",
	"feeinfoblock-mean":   "Mean of transaction fees in the block",
	"feeinfoblock-median": "Median of transaction fees in the block",
	"feeinfoblock-stddev": "Standard deviation of transaction fees in the block",

	"feeinfowindow-startheight": "First block in the window (inclusive)",
	"feeinfowindow-endheight":   "Last block in the window (exclusive)",
	"feeinfowindow-number":      "Number of transactions in the window",
	"feeinfowindow-min":         "Minimum transaction fee in the window",
	"feeinfowindow-max":         "Maximum transaction fee in the window",
	"feeinfowindow-mean":        "Mean of transaction fees in the window",
	"feeinfowindow-median":      "Median of transaction fees in the window",
	"feeinfowindow-stddev":      "Standard deviation of transaction fees in the window",

	// TicketsForAddress help.
	"ticketsforaddress--synopsis":     "Request all the tickets for an address.",
	"ticketsforaddress-address":       "Address to look for.",
	"ticketsforaddressresult-tickets": "Tickets owned by the specified address.",

	// TicketsForBucket help.
	"ticketsforbucket--synopsis":     "Request all the tickets and owners in a given bucket.",
	"ticketsforbucket-bucket":        "Bucket to look for.",
	"ticketsforbucketresult-tickets": "Result for the ticketsfor bucket command.",
	"ticket-owner":                   "Address owning the ticket.",
	"ticket-hash":                    "Hash of the ticket.",

	// TicketVWAP help.
	"ticketvwap--synopsis": "Calculate the volume weighted average price of tickets for a range of blocks (default: full PoS difficulty adjustment depth)",
	"ticketvwap-start":     "The start height to begin calculating the VWAP from",
	"ticketvwap-end":       "The end height to begin calculating the VWAP from",
	"ticketvwap--result0":  "The volume weighted average price",

	// TxFeeInfo help.
	"txfeeinfo--synopsis":            "Get various information about regular transaction fees from the mempool, blocks, and difficulty windows",
	"txfeeinfo-blocks":               "The number of blocks to calculate transaction fees for, starting from the end of the tip moving backwards",
	"txfeeinfo-rangestart":           "The start height of the block range to calculate transaction fees for",
	"txfeeinfo-rangeend":             "The end height of the block range to calculate transaction fees for",
	"txfeeinforesult-feeinfomempool": "Transaction fee information for all regular transactions in the mempool",
	"txfeeinforesult-feeinfoblocks":  "Transaction fee information for a given list of blocks descending from the chain tip",
	"txfeeinforesult-feeinforange":   "Transaction fee information for a window period where the stake difficulty was the same",

	"feeinforange-number": "Number of transactions in the window",
	"feeinforange-min":    "Minimum transaction fee in the window",
	"feeinforange-max":    "Maximum transaction fee in the window",
	"feeinforange-mean":   "Mean of transaction fees in the window",
	"feeinforange-median": "Median of transaction fees in the window",
	"feeinforange-stddev": "Standard deviation of transaction fees in the window",

	// Version help.
	"version--synopsis":       "Returns the JSON-RPC API version (semver)",
	"version--result0--desc":  "Version objects keyed by the program or API name",
	"version--result0--key":   "Program or API name",
	"version--result0--value": "Object containing the semantic version",

	// regentemplate help
	"regentemplate--synopsis": "Asks the node to regenerate its block mining template.",
}

// rpcResultTypes specifies the result types that each RPC command can return.
// This information is used to generate the help.  Each result type must be a
// pointer to the type (or nil to indicate no return value).
var rpcResultTypes = map[types.Method][]interface{}{
	"addnode":               nil,
	"createrawsstx":         {(*string)(nil)},
	"createrawssrtx":        {(*string)(nil)},
	"createrawtransaction":  {(*string)(nil)},
	"debuglevel":            {(*string)(nil), (*string)(nil)},
	"decoderawtransaction":  {(*types.TxRawDecodeResult)(nil)},
	"decodescript":          {(*types.DecodeScriptResult)(nil)},
	"estimatefee":           {(*float64)(nil)},
	"estimatesmartfee":      {(*types.EstimateSmartFeeResult)(nil)},
	"estimatestakediff":     {(*types.EstimateStakeDiffResult)(nil)},
	"existsaddress":         {(*bool)(nil)},
	"existsaddresses":       {(*string)(nil)},
	"existsliveticket":      {(*bool)(nil)},
	"existslivetickets":     {(*string)(nil)},
	"existsmempooltxs":      {(*string)(nil)},
	"getaddednodeinfo":      {(*[]string)(nil), (*[]types.GetAddedNodeInfoResult)(nil)},
	"getbestblock":          {(*types.GetBestBlockResult)(nil)},
	"generate":              {(*[]string)(nil)},
	"getbestblockhash":      {(*string)(nil)},
	"getblock":              {(*string)(nil), (*types.GetBlockVerboseResult)(nil)},
	"getblockchaininfo":     {(*types.GetBlockChainInfoResult)(nil)},
	"getblockcount":         {(*int64)(nil)},
	"getblockhash":          {(*string)(nil)},
	"getblockheader":        {(*string)(nil), (*types.GetBlockHeaderVerboseResult)(nil)},
	"getblocksubsidy":       {(*types.GetBlockSubsidyResult)(nil)},
	"getcfilterv2":          {(*types.GetCFilterV2Result)(nil)},
	"getchaintips":          {(*[]types.GetChainTipsResult)(nil)},
	"getconnectioncount":    {(*int32)(nil)},
	"getcurrentnet":         {(*uint32)(nil)},
	"getdifficulty":         {(*float64)(nil)},
	"getstakedifficulty":    {(*types.GetStakeDifficultyResult)(nil)},
	"getstakeversioninfo":   {(*types.GetStakeVersionInfoResult)(nil)},
	"getstakeversions":      {(*types.GetStakeVersionsResult)(nil)},
	"getgenerate":           {(*bool)(nil)},
	"gethashespersec":       {(*float64)(nil)},
	"getheaders":            {(*types.GetHeadersResult)(nil)},
	"getinfo":               {(*types.InfoChainResult)(nil)},
	"getmempoolinfo":        {(*types.GetMempoolInfoResult)(nil)},
	"getmininginfo":         {(*types.GetMiningInfoResult)(nil)},
	"getnettotals":          {(*types.GetNetTotalsResult)(nil)},
	"getnetworkhashps":      {(*int64)(nil)},
	"getnetworkinfo":        {(*[]types.GetNetworkInfoResult)(nil)},
	"getpeerinfo":           {(*[]types.GetPeerInfoResult)(nil)},
	"getrawmempool":         {(*[]string)(nil), (*types.GetRawMempoolVerboseResult)(nil)},
	"getrawtransaction":     {(*string)(nil), (*types.TxRawResult)(nil)},
	"getticketpoolvalue":    {(*float64)(nil)},
	"gettreasurybalance":    {(*types.GetTreasuryBalanceResult)(nil)},
	"gettreasuryspendvotes": {(*types.GetTreasurySpendVotesResult)(nil)},
	"gettxout":              {(*types.GetTxOutResult)(nil)},
	"gettxoutsetinfo":       {(*types.GetTxOutSetInfoResult)(nil)},
	"getvoteinfo":           {(*types.GetVoteInfoResult)(nil)},
	"getwork":               {(*types.GetWorkResult)(nil), (*bool)(nil)},
	"getcoinsupply":         {(*int64)(nil)},
	"help":                  {(*string)(nil), (*string)(nil)},
	"invalidateblock":       nil,
	"livetickets":           {(*types.LiveTicketsResult)(nil)},
	"node":                  nil,
	"ping":                  nil,
	"reconsiderblock":       nil,
	"regentemplate":         nil,
	"sendrawtransaction":    {(*string)(nil)},
	"setgenerate":           nil,
	"stop":                  {(*string)(nil)},
	"submitblock":           {nil, (*string)(nil)},
	"ticketfeeinfo":         {(*types.TicketFeeInfoResult)(nil)},
	"ticketsforaddress":     {(*types.TicketsForAddressResult)(nil)},
	"ticketvwap":            {(*float64)(nil)},
	"txfeeinfo":             {(*types.TxFeeInfoResult)(nil)},
	"validateaddress":       {(*types.ValidateAddressChainResult)(nil)},
	"verifychain":           {(*bool)(nil)},
	"verifymessage":         {(*bool)(nil)},
	"version":               {(*map[string]types.VersionResult)(nil)},

	// Websocket commands.
	"loadtxfilter":              nil,
	"notifywinningtickets":      nil,
	"notifynewtickets":          nil,
	"notifyblocks":              nil,
	"notifywork":                nil,
	"notifytspend":              nil,
	"notifynewtransactions":     nil,
	"rebroadcastwinners":        nil,
	"rescan":                    {(*types.RescanResult)(nil)},
	"session":                   {(*types.SessionResult)(nil)},
	"stopnotifyblocks":          nil,
	"stopnotifywork":            nil,
	"stopnotifytspend":          nil,
	"stopnotifynewtransactions": nil,
}

// helpCacher provides a concurrent safe type that provides help and usage for
// the RPC server commands and caches the results for future calls.
type helpCacher struct {
	sync.Mutex
	usage      string
	methodHelp map[types.Method]string
}

// RPCMethodHelp returns an RPC help string for the provided method.
//
// This function is safe for concurrent access.
func (c *helpCacher) RPCMethodHelp(method types.Method) (string, error) {
	c.Lock()
	defer c.Unlock()

	// Return the cached method help if it exists.
	if help, exists := c.methodHelp[method]; exists {
		return help, nil
	}

	// Look up the result types for the method.
	resultTypes, ok := rpcResultTypes[method]
	if !ok {
		return "", errors.New("no result types specified for method " +
			string(method))
	}

	// Generate, cache, and return the help.
	help, err := dcrjson.GenerateHelp(method, helpDescsEnUS, resultTypes...)
	if err != nil {
		return "", err
	}
	c.methodHelp[method] = help
	return help, nil
}

// RPCUsage returns one-line usage for all supported RPC commands.
//
// This function is safe for concurrent access.
func (c *helpCacher) RPCUsage(includeWebsockets bool) (string, error) {
	c.Lock()
	defer c.Unlock()

	// Return the cached usage if it is available.
	if c.usage != "" {
		return c.usage, nil
	}

	// Generate a list of one-line usage for every command.
	usageTexts := make([]string, 0, len(rpcHandlers))
	for k := range rpcHandlers {
		usage, err := dcrjson.MethodUsageText(k)
		if err != nil {
			return "", err
		}
		usageTexts = append(usageTexts, usage)
	}

	// Include websockets commands if requested.
	if includeWebsockets {
		for k := range wsHandlers {
			usage, err := dcrjson.MethodUsageText(k)
			if err != nil {
				return "", err
			}
			usageTexts = append(usageTexts, usage)
		}
	}

	sort.Strings(usageTexts)
	c.usage = strings.Join(usageTexts, "\n")
	return c.usage, nil
}

// newHelpCacher returns a new instance of a help cacher which provides help and
// usage for the RPC server commands and caches the results for future calls.
func newHelpCacher() *helpCacher {
	return &helpCacher{
		methodHelp: make(map[types.Method]string),
	}
}
