openchamber/packages/web/server/lib/git-providers/DOCUMENTATION.md

Git Providers Configuration Module

Purpose

• This module owns the per-provider git hosting configuration (gitProviders in the user settings file): API base URLs and provider-detection hostnames for GitHub, GitLab, and Gitea.
• It is the single source of truth for the effective provider defaults consumed by packages/web/server/lib/{github,gitlab,gitea} and is validated end-to-end through the settings GET/PUT routes (the gitProviders key round-trips via sanitizeSettingsUpdate in packages/web/server/lib/opencode/settings-helpers.js).

Entrypoints

• packages/web/server/lib/git-providers/config.js: the single module file, exporting the helpers directly.

Public exports

• GIT_PROVIDER_DEFAULTS: { github: 'https://api.github.com', gitlab: 'https://gitlab.com', gitea: null }. Built-in defaults are not persisted; they are applied at read time by getters.
• normalizeBaseUrl(raw): normalize an API base URL (add https:// when the scheme is missing, strip trailing slashes, preserve subpaths like /gitlab), null for empty/unparseable input.
• normalizeDetectionHost(raw): extract the bare lowercase hostname from any git remote/URL form (https://, ssh://, scp-like git@host:path, IPv6); mirrors packages/ui/src/lib/gitHost.ts parseGitHost.
• sanitizeGitProviders(payload): validate/normalize the gitProviders shape — only github|gitlab|gitea keys survive; apiBaseUrl via normalizeBaseUrl, detectUrls deduped bare hostnames; empty/absent values dropped; returns undefined when nothing valid remains.
• readGitProvidersConfig(): read the gitProviders section from settings.json (OPENCHAMBER_DATA_DIR env override, else ~/.config/openchamber); never throws, returns {} on missing/invalid data.
• getProviderApiBaseUrl(provider): configured value -> GIT_PROVIDER_DEFAULTS[provider] -> null (gitea).
• githubWebOriginFromApiBase(apiBase): GitHub web origin from an API base — https://api.github.com -> https://github.com; Enterprise https://host/api[/v3] -> https://host (trailing /api//api/v3 stripped, subpath prefixes kept); otherwise the URL origin; never throws, falls back to https://github.com.

Settings shape

~/.config/openchamber/settings.json:

"gitProviders": {
  "github": { "apiBaseUrl": "https://github.example.com/api/v3", "detectUrls": ["github.example.com"] },
  "gitlab":  { "apiBaseUrl": "https://gitlab.example.com", "detectUrls": [] },
  "gitea":   { "apiBaseUrl": "", "detectUrls": ["gitea.example.com"] }
}

• apiBaseUrl: API base URL; the per-account baseUrl (gitlab/gitea accounts) still wins when set; this is the default/fallback plus connect-form prefill.
• detectUrls: SSH/HTTPS URLs normalized to bare hostnames for provider autodetection (client-side; the server only persists/validates them).
• The whole gitProviders key is omitted when empty.

Consumers

• packages/web/server/lib/github/octokit.js, device-flow.js, routes.js, repo/index.js, pr-status.js, repo/fork-detection.js: GitHub Enterprise support (Octokit baseUrl, device-flow web origin, remote parsing, fallback URLs).
• packages/web/server/lib/gitlab/auth.js, client.js, routes.js: effective default base URL.
• packages/web/server/lib/gitea/auth.js, routes.js: connect-form default / status defaultBaseUrl.
• packages/web/server/lib/opencode/settings-helpers.js: gitProviders persistence whitelist.

Notes for contributors

• Readers must never throw: readGitProvidersConfig and githubWebOriginFromApiBase fail closed.
• No new dependencies.