openclaw/gogcli
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v0.1.1
gogcli/docs/spec.md
Peter Steinberger fd05a988e7 docs: update 0.1.1 changelog and examples
2025-12-17 21:25:04 +01:00

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gogcli spec

Goal

Build a single, clean, modern Go CLI that talks to:

  • Gmail API
  • Google Calendar API
  • Google Drive API
  • Google People API (Contacts + directory)

This replaces the existing separate CLIs (gmcli, gccli, gdcli) and the Python contacts server conceptually, but:

  • no backwards compatibility
  • no migration tooling

Non-goals

  • Preserving legacy command names/flags/output formats
  • Importing existing ~/.gmcli, ~/.gccli, ~/.gdcli state
  • Running an MCP server (this is a CLI)

Language/runtime

  • Go 1.25 (see go.mod)

CLI framework

  • github.com/spf13/cobra
  • Root command: gog
  • Global flag:
    • --color=auto|always|never (default auto)
    • --output=text|json (default text)

Notes:

  • We run SilenceUsage: true and print errors ourselves (colored when possible).
  • NO_COLOR is respected.

Environment:

  • GOG_COLOR=auto|always|never (default auto, overridden by --color)
  • GOG_OUTPUT=text|json (default text, overridden by --output)

Output (TTY-aware colors)

  • github.com/muesli/termenv is used to detect rich TTY capabilities and render colored output.
  • Colors are enabled when:
    • output is a rich terminal and --color=auto, and NO_COLOR is not set; or
    • --color=always
  • Colors are disabled when:
    • --color=never; or
    • NO_COLOR is set

Implementation: internal/ui/ui.go.

Auth + secret storage

OAuth client credentials (non-secret-ish)

  • Stored on disk in the per-user config directory:
    • $(os.UserConfigDir())/gogcli/credentials.json
  • Written with mode 0600.
  • Command:
    • gog auth credentials <credentials.json>
  • Supports Google’s downloaded JSON format:
    • installed.client_id/client_secret or web.client_id/client_secret

Implementation: internal/config/*.

Refresh tokens (secrets)

  • Stored in OS credential store via github.com/99designs/keyring.
  • Key namespace is gogcli (keyring ServiceName).
  • Key format: token:<email>
  • Stored payload is JSON (refresh token + metadata like selected services/scopes).

Current minimal management commands (implemented):

  • gog auth tokens list (keys only)
  • gog auth tokens delete <email>

Implementation: internal/secrets/store.go.

OAuth flow

  • Desktop OAuth 2.0 flow using local HTTP redirect on an ephemeral port.
  • Supports a browserless/manual flow (paste redirect URL) for headless environments.
  • Refresh token issuance:
    • requests access_type=offline
    • supports --force-consent to force the consent prompt when Google doesn't return a refresh token
    • uses include_granted_scopes=true to support incremental auth re-runs

Scope selection note:

  • The consent screen shows the scopes the CLI requested.
  • Users cannot selectively un-check individual requested scopes in the consent screen; they either approve all requested scopes or cancel.
  • To request fewer scopes, choose fewer services via gog auth add --services ....

Config layout

  • Base config dir: $(os.UserConfigDir())/gogcli/
  • Files:
    • credentials.json (OAuth client id/secret)
  • Secrets:
    • refresh tokens in keyring

We intentionally avoid storing refresh tokens in plain JSON on disk.

Environment:

  • GOG_ACCOUNT=you@gmail.com (used when --account is not set)

Commands (current + planned)

Implemented

  • gog auth credentials <credentials.json>
  • gog auth add <email> [--services all|gmail,calendar,drive,contacts] [--manual] [--force-consent]
  • gog auth list
  • gog auth remove <email>
  • gog auth tokens list
  • gog auth tokens delete <email>
  • gog drive ls [folderId] [--max N] [--page TOKEN] [--query Q]
  • gog drive search <text> [--max N] [--page TOKEN]
  • gog drive get <fileId>
  • gog drive download <fileId> [destPath]
  • gog drive upload <localPath> [--name N] [--folder ID]
  • gog drive mkdir <name> [--parent ID]
  • gog drive delete <fileId>
  • gog drive move <fileId> <newParentId>
  • gog drive rename <fileId> <newName>
  • gog drive share <fileId> [--anyone | --email addr] [--role reader|writer] [--discoverable]
  • gog drive permissions <fileId>
  • gog drive unshare <fileId> <permissionId>
  • gog drive url <fileIds...>
  • gog calendar calendars
  • gog calendar acl <calendarId>
  • gog calendar events <calendarId> [--from RFC3339] [--to RFC3339] [--max N] [--page TOKEN] [--query Q]
  • gog calendar event <calendarId> <eventId>
  • gog calendar create <calendarId> --summary S --start DT --end DT [--description D] [--location L] [--attendees a@b.com,c@d.com] [--all-day]
  • gog calendar update <calendarId> <eventId> [--summary S] [--start DT] [--end DT] [--description D] [--location L] [--attendees ...] [--all-day]
  • gog calendar delete <calendarId> <eventId>
  • gog calendar freebusy <calendarIds> --from RFC3339 --to RFC3339
  • gog calendar respond <calendarId> <eventId> --status accepted|declined|tentative [--send-updates all|none|externalOnly]
  • gog gmail search <query> [--max N] [--page TOKEN]
  • gog gmail thread <threadId> [--download]
  • gog gmail get <messageId> [--format full|metadata|raw] [--headers ...]
  • gog gmail attachment <messageId> <attachmentId> [--out PATH] [--filename NAME]
  • gog gmail url <threadIds...>
  • gog gmail labels list
  • gog gmail labels modify <threadIds...> [--add ...] [--remove ...]
  • gog gmail send --to a@b.com --subject S --body B [--cc ...] [--bcc ...] [--reply-to <messageId>] [--attach <file>...]
  • gog gmail drafts list [--max N] [--page TOKEN]
  • gog gmail drafts get <draftId> [--download]
  • gog gmail drafts create --to a@b.com --subject S --body B [--cc ...] [--bcc ...] [--reply-to <messageId>] [--attach <file>...]
  • gog gmail drafts send <draftId>
  • gog gmail drafts delete <draftId>
  • gog contacts search <query> [--max N]
  • gog contacts list [--max N] [--page TOKEN]
  • gog contacts get <people/...|email>
  • gog contacts create --given NAME [--family NAME] [--email addr] [--phone num]
  • gog contacts update <people/...> [--given NAME] [--family NAME] [--email addr] [--phone num]
  • gog contacts delete <people/...>
  • gog contacts directory list [--max N] [--page TOKEN]
  • gog contacts directory search <query> [--max N] [--page TOKEN]
  • gog contacts other list [--max N] [--page TOKEN]
  • gog contacts other search <query> [--max N]
  • gog people me

Planned high-level command tree

  • gog auth …
    • gog auth credentials <credentials.json>
  • gog gmail …
  • gog calendar …
  • gog drive …
  • gog contacts …
  • gog people …

Planned service identifiers (canonical):

  • gmail
  • calendar
  • drive
  • contacts
  • people

Google API dependencies (planned)

  • golang.org/x/oauth2
  • golang.org/x/oauth2/google
  • google.golang.org/api/option
  • google.golang.org/api/gmail/v1
  • google.golang.org/api/calendar/v3
  • google.golang.org/api/drive/v3
  • google.golang.org/api/people/v1

Scopes (planned)

We store a single refresh token per Google account email.

  • gog auth add requests a union of scopes based on --services.

  • Each API client refreshes an access token for the subset of scopes needed for that service.

  • If you later want additional services, re-run gog auth add <email> --services ... (may require --force-consent to mint a new refresh token).

  • Gmail: https://mail.google.com/ (or narrower scopes if we decide later)

  • Calendar: https://www.googleapis.com/auth/calendar

  • Drive: https://www.googleapis.com/auth/drive

  • Contacts/Directory:

    • https://www.googleapis.com/auth/contacts
    • https://www.googleapis.com/auth/contacts.other.readonly
    • https://www.googleapis.com/auth/directory.readonly

Output formats (planned)

Default: machine-friendly tabular output using stdlib text/tabwriter.

  • Keep stdout stable and parseable:
    • --output=text: plain text, typically tab-separated for list/search style commands
    • --output=json: JSON objects/arrays suitable for scripting
  • Human-facing hints/progress are written to stderr so stdout can be safely captured.
  • Colors are only used for human-facing output and are disabled automatically for --output=json.

We avoid heavy table deps unless we decide we need them.

Code layout (current)

  • cmd/gog/main.go — binary entrypoint
  • internal/cmd/* — cobra commands
  • internal/ui/* — color + printing
  • internal/config/* — config paths + credential parsing/writing
  • internal/secrets/* — keyring store

Formatting, linting, tests

Formatting

Pinned tools, installed into local .tools/ via make tools:

  • mvdan.cc/gofumpt@v0.7.0
  • golang.org/x/tools/cmd/goimports@v0.38.0
  • github.com/golangci/golangci-lint/cmd/golangci-lint@v1.62.2

Commands:

  • make fmt — applies goimports + gofumpt
  • make fmt-check — formats and fails if Go files or go.mod/go.sum change

Lint

  • golangci-lint with config in .golangci.yml
  • make lint

Tests

  • stdlib testing (+ httptest when we add OAuth/API tests)
  • make test

Integration tests (local only)

There is an opt-in integration test suite guarded by build tags (not run in CI).

  • Requires:
    • stored credentials.json via gog auth credentials ...
    • refresh token in keyring via gog auth add <email>
  • Run:
    • GOG_IT_ACCOUNT=you@gmail.com go test -tags=integration ./internal/integration

CI (GitHub Actions)

Workflow: .github/workflows/ci.yml

  • runs on push + PR
  • uses actions/setup-go with go-version-file: go.mod
  • runs:
    • make tools
    • make fmt-check
    • go test ./...
    • golangci-lint (pinned v1.62.2)

Next implementation steps

  • Expand Gmail further (labels by name everywhere, richer body rendering, compose edge cases).
  • Improve People updates (multi-field + richer contact data).
  • Harden UX (consistent output formats, retries/backoff on specific transient errors).