-- Repos: workspace-scoped cache of the repositories pulled from each
-- connected provider (GitHub / Gitea / GitLab). One row per (connection,
-- external_id). The provider PAT itself never lives here — it's already
-- in the secret broker via app_connections.secret_ref (see 0007).
--
-- Sync flow:
--   POST /api/repos/connections/:id/sync  →  provider API list  →  upsert.
-- Removed-upstream rows stay for now (v1); a future flag can prune them.
--
-- repo_connections wraps an app_connections row with the repo-specific
-- config: which owner (org/user) to pull from, provider base URL for
-- self-hosted Gitea/GitLab instances, and last-sync bookkeeping.

CREATE TABLE repo_connections (
    id              UUID PRIMARY KEY,
    workspace_id    UUID NOT NULL REFERENCES workspaces (id) ON DELETE CASCADE,
    app_connection_id UUID NOT NULL REFERENCES app_connections (id) ON DELETE CASCADE,
    provider        TEXT NOT NULL,           -- 'github' | 'gitea' | 'gitlab'
    -- Optional owner (org or user). When NULL, the provider fetches "all
    -- repos the token can see" (e.g. GitHub /user/repos).
    owner           TEXT,
    -- Optional base URL for self-hosted providers (e.g. https://git.redclaw.dev).
    base_url        TEXT,
    label           TEXT NOT NULL DEFAULT '',
    last_synced_at  TIMESTAMPTZ,
    last_sync_error TEXT,
    created_at      TIMESTAMPTZ NOT NULL DEFAULT now(),
    updated_at      TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX repo_connections_workspace_idx
    ON repo_connections (workspace_id, created_at DESC);

CREATE TABLE repos (
    id              UUID PRIMARY KEY,
    workspace_id    UUID NOT NULL REFERENCES workspaces (id) ON DELETE CASCADE,
    connection_id   UUID NOT NULL REFERENCES repo_connections (id) ON DELETE CASCADE,
    provider        TEXT NOT NULL,           -- 'github' | 'gitea' | 'gitlab'
    -- Provider-side stable id (numeric on GitHub, integer on Gitea/GitLab).
    -- Stored as TEXT so we don't care which flavor the provider uses.
    external_id     TEXT NOT NULL,
    owner           TEXT NOT NULL,           -- org or user login
    name            TEXT NOT NULL,           -- repo slug
    description     TEXT,
    default_branch  TEXT,
    clone_url       TEXT,
    html_url        TEXT,
    private         BOOLEAN NOT NULL DEFAULT false,
    stars           INTEGER NOT NULL DEFAULT 0,
    forks           INTEGER NOT NULL DEFAULT 0,
    -- Provider's own `updated_at` (last push / edit), NOT the sync time.
    provider_updated_at TIMESTAMPTZ,
    last_synced_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
    created_at      TIMESTAMPTZ NOT NULL DEFAULT now(),

    UNIQUE (connection_id, external_id)
);

CREATE INDEX repos_workspace_idx
    ON repos (workspace_id, provider_updated_at DESC NULLS LAST);
-- Fast per-connection list (sidebar grouping).
CREATE INDEX repos_connection_idx
    ON repos (connection_id, name);