-- Chat Switchboard — 010 Projects (SQLite)

CREATE TABLE IF NOT EXISTS projects (
    id          TEXT PRIMARY KEY,
    name        TEXT NOT NULL,
    description TEXT,
    color       TEXT,
    icon        TEXT,
    scope       TEXT NOT NULL DEFAULT 'personal' CHECK (scope IN ('personal', 'team', 'global')),
    owner_id    TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    team_id     TEXT REFERENCES teams(id) ON DELETE SET NULL,
    workspace_id TEXT REFERENCES workspaces(id) ON DELETE SET NULL,
    is_archived INTEGER NOT NULL DEFAULT 0,
    settings    TEXT DEFAULT '{}',
    created_at  TEXT DEFAULT (datetime('now')),
    updated_at  TEXT DEFAULT (datetime('now'))
);

CREATE INDEX IF NOT EXISTS idx_projects_owner ON projects(owner_id);
CREATE INDEX IF NOT EXISTS idx_projects_team ON projects(team_id);
CREATE INDEX IF NOT EXISTS idx_projects_scope ON projects(scope);
CREATE INDEX IF NOT EXISTS idx_projects_workspace ON projects(workspace_id);

CREATE TABLE IF NOT EXISTS project_channels (
    project_id  TEXT NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
    channel_id  TEXT NOT NULL REFERENCES channels(id) ON DELETE CASCADE,
    position    INTEGER NOT NULL DEFAULT 0,
    folder      TEXT,
    added_at    TEXT NOT NULL DEFAULT (datetime('now')),
    PRIMARY KEY (project_id, channel_id),
    UNIQUE (channel_id)
);

CREATE INDEX IF NOT EXISTS idx_project_channels_project ON project_channels(project_id);
CREATE INDEX IF NOT EXISTS idx_project_channels_channel ON project_channels(channel_id);

CREATE TABLE IF NOT EXISTS project_knowledge_bases (
    project_id  TEXT NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
    kb_id       TEXT NOT NULL REFERENCES knowledge_bases(id) ON DELETE CASCADE,
    auto_search INTEGER NOT NULL DEFAULT 0,
    added_at    TEXT NOT NULL DEFAULT (datetime('now')),
    PRIMARY KEY (project_id, kb_id)
);

CREATE INDEX IF NOT EXISTS idx_project_kb_project ON project_knowledge_bases(project_id);
CREATE INDEX IF NOT EXISTS idx_project_kb_kb ON project_knowledge_bases(kb_id);

CREATE TABLE IF NOT EXISTS project_notes (
    project_id  TEXT NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
    note_id     TEXT NOT NULL REFERENCES notes(id) ON DELETE CASCADE,
    added_at    TEXT NOT NULL DEFAULT (datetime('now')),
    PRIMARY KEY (project_id, note_id)
);

CREATE INDEX IF NOT EXISTS idx_project_notes_project ON project_notes(project_id);
CREATE INDEX IF NOT EXISTS idx_project_notes_note ON project_notes(note_id);

-- Cross-domain FK columns on channels (SQLite cannot ADD COLUMN with FK in all cases,
-- so these may already exist from initial channel creation — safe to skip on error)
-- ALTER TABLE channels ADD COLUMN project_id TEXT REFERENCES projects(id) ON DELETE SET NULL;
-- ALTER TABLE channels ADD COLUMN workspace_id TEXT REFERENCES workspaces(id) ON DELETE SET NULL;
-- Note: SQLite ADD COLUMN IF NOT EXISTS not supported; channels table created with these columns.