-- Phase 3: Admin panel – groups, settings, user display names

-- ── Users: display name ───────────────────────────────────────────────────────
ALTER TABLE users ADD COLUMN IF NOT EXISTS display_name TEXT NOT NULL DEFAULT '';

-- ── Groups ───────────────────────────────────────────────────────────────────
CREATE TABLE groups (
    id          UUID        PRIMARY KEY DEFAULT gen_random_uuid(),
    name        TEXT        NOT NULL UNIQUE,
    description TEXT        NOT NULL DEFAULT '',
    created_at  TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE TABLE group_members (
    group_id    UUID        NOT NULL REFERENCES groups(id)  ON DELETE CASCADE,
    user_id     UUID        NOT NULL REFERENCES users(id)   ON DELETE CASCADE,
    joined_at   TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    PRIMARY KEY (group_id, user_id)
);

CREATE INDEX idx_group_members_user ON group_members(user_id);

-- ── Settings (key-value, admin-managed) ───────────────────────────────────────
CREATE TABLE settings (
    key         TEXT        PRIMARY KEY,
    value       TEXT        NOT NULL DEFAULT '',
    updated_at  TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

-- Default settings
INSERT INTO settings (key, value) VALUES
    ('cloud_name',     'Aether'),
    ('primary_color',  '#6366f1'),
    ('accent_color',   '#8b5cf6'),
    ('logo_storage_key', '');