-- ==========================================
-- Switchboard Core — 002 Teams & Access Control
-- ==========================================

CREATE TABLE IF NOT EXISTS teams (
    id          UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    name        VARCHAR(200) NOT NULL UNIQUE,
    description TEXT DEFAULT '',
    created_by  UUID NOT NULL REFERENCES users(id) ON DELETE RESTRICT,
    is_active   BOOLEAN DEFAULT true,
    settings    JSONB DEFAULT '{}'::jsonb,
    created_at  TIMESTAMPTZ DEFAULT NOW(),
    updated_at  TIMESTAMPTZ DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_teams_active ON teams(is_active) WHERE is_active = true;
DROP TRIGGER IF EXISTS teams_updated_at ON teams;
CREATE TRIGGER teams_updated_at BEFORE UPDATE ON teams
    FOR EACH ROW EXECUTE FUNCTION update_updated_at();

CREATE TABLE IF NOT EXISTS team_members (
    id          UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    team_id     UUID NOT NULL REFERENCES teams(id) ON DELETE CASCADE,
    user_id     UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    role        VARCHAR(50) NOT NULL DEFAULT 'member',
    joined_at   TIMESTAMPTZ DEFAULT NOW(),
    UNIQUE(team_id, user_id)
);

CREATE INDEX IF NOT EXISTS idx_team_members_team ON team_members(team_id);
CREATE INDEX IF NOT EXISTS idx_team_members_user ON team_members(user_id);

-- ── Groups ──────────────────────────────────

CREATE TABLE IF NOT EXISTS groups (
    id          UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    name        VARCHAR(100) NOT NULL,
    description TEXT NOT NULL DEFAULT '',
    scope       VARCHAR(20) NOT NULL DEFAULT 'global'
                CHECK (scope IN ('global', 'team')),
    team_id     UUID REFERENCES teams(id) ON DELETE CASCADE,
    created_by  UUID REFERENCES users(id),
    source      VARCHAR(20) NOT NULL DEFAULT 'manual'
                CHECK (source IN ('manual', 'oidc', 'system')),
    permissions          JSONB   NOT NULL DEFAULT '[]'::jsonb,
    created_at  TIMESTAMPTZ DEFAULT NOW(),
    updated_at  TIMESTAMPTZ DEFAULT NOW(),
    CONSTRAINT groups_scope_team CHECK (
        (scope = 'global' AND team_id IS NULL) OR
        (scope = 'team' AND team_id IS NOT NULL)
    )
);

CREATE UNIQUE INDEX IF NOT EXISTS idx_groups_name_scope
    ON groups(name, COALESCE(team_id, '00000000-0000-0000-0000-000000000000'));
DROP TRIGGER IF EXISTS groups_updated_at ON groups;
CREATE TRIGGER groups_updated_at BEFORE UPDATE ON groups
    FOR EACH ROW EXECUTE FUNCTION update_updated_at();

CREATE TABLE IF NOT EXISTS group_members (
    id          UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    group_id    UUID NOT NULL REFERENCES groups(id) ON DELETE CASCADE,
    user_id     UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    added_by    UUID NOT NULL REFERENCES users(id),
    added_at    TIMESTAMPTZ DEFAULT NOW(),
    UNIQUE(group_id, user_id)
);

CREATE INDEX IF NOT EXISTS idx_group_members_group ON group_members(group_id);
CREATE INDEX IF NOT EXISTS idx_group_members_user ON group_members(user_id);

-- Seed Everyone group
INSERT INTO groups (id, name, description, scope, created_by, source, permissions)
VALUES (
    '00000000-0000-0000-0000-000000000001',
    'Everyone',
    'Implicit group — all authenticated users receive these permissions.',
    'global', NULL, 'system',
    '["extension.use","workflow.submit"]'::jsonb
)
ON CONFLICT (id) DO NOTHING;

-- Seed Admins group — members receive full platform permissions.
-- Replaces the legacy users.role = 'admin' authorization check.
-- Membership is managed by bootstrap/seed logic at runtime.
INSERT INTO groups (id, name, description, scope, created_by, source, permissions)
VALUES (
    '00000000-0000-0000-0000-000000000002',
    'Admins',
    'Full platform access — replaces legacy admin role.',
    'global', NULL, 'system',
    '["surface.admin.access","extension.use","extension.install","workflow.create","workflow.submit","admin.view","token.unlimited"]'::jsonb
)
ON CONFLICT (id) DO NOTHING;