google-cli-common

Shared Go library for the Open CLI Collective's Google CLIs. It holds everything that would otherwise be duplicated between them: the Google OAuth flow, the API service clients (Gmail, Calendar, Contacts, Drive, People), credential/config/ cache state, rendering and bulk-operation helpers, and the cobra command scaffolding (init, credential management, the mail command surface, root wiring).

Each CLI is a thin binary that registers a config.Identity at startup and composes the pieces it needs:

• google-readonly (gro) — non-destructive: read plus labeling/archiving/RSVP/etc.
• google-readwrite (grw) — read-write Gmail cleanup: delete, filters, and label (folder) lifecycle.

The identity seam

One shared library backs multiple CLIs because everything CLI-specific is funneled through a single config.Identity, registered once from main before any other call:

config.Register(config.Identity{
    DirName:           "google-readwrite",        // config/cache dir, keyring service, env-var prefix
    DefaultRef:        "google-readwrite/default", // default <service>/<profile> credential ref
    ProductName:       "grw",                      // user-facing name in messages
    Scopes:            appidentity.Scopes,         // OAuth scopes this CLI requests
    ScopeDescriptions: appidentity.ScopeDescriptions,
    SiblingDirNames:   []string{"google-readonly"}, // OAuth clients this CLI may reuse
})

DirName alone drives the config/cache directory, the keyring service segment, and the derived <SERVICE>_KEYRING_BACKEND / <SERVICE>_KEYRING_PASSPHRASE / <SERVICE>_CREDENTIAL_REF env vars, so two CLIs never collide.

Layout

Package	Responsibility
config, keychain, auth	Config file, OS-keyring token storage, and the Google OAuth flow
gmail, calendar, contacts, drive, people	API clients and data models
mailcmd, initcmd, configcmd, setcred, refreshcmd, rootutil	Shared cobra command packages and root scaffolding
bulk, output, format, view, errors, log, cache, zip, version	Rendering, bulk-operation, and support utilities
testutil, credtest	Test fixtures, assertions, and a hermetic credential environment

Development

make check   # tidy + lint + test (race) + build

Secret/state handling, output conventions, and repository layout follow the Open CLI Collective standards in cli-common.