CREATE TABLE IF NOT EXISTS users (
    id            text PRIMARY KEY,
    email         text NOT NULL UNIQUE,
    password_hash text NOT NULL,
    name          text NOT NULL,
    avatar_url    text,
    created_at    timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS albums (
    id             text PRIMARY KEY,
    owner_id       text NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    title          text NOT NULL,
    description    text NOT NULL DEFAULT '',
    cover_photo_id text,
    created_at     timestamptz NOT NULL DEFAULT now(),
    updated_at     timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS album_members (
    album_id   text NOT NULL REFERENCES albums(id) ON DELETE CASCADE,
    user_id    text NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    role       text NOT NULL,
    invited_by text REFERENCES users(id) ON DELETE SET NULL,
    joined_at  timestamptz NOT NULL DEFAULT now(),
    PRIMARY KEY (album_id, user_id)
);

CREATE TABLE IF NOT EXISTS invites (
    id         text PRIMARY KEY,
    album_id   text NOT NULL REFERENCES albums(id) ON DELETE CASCADE,
    token      text NOT NULL UNIQUE,
    role       text NOT NULL,
    created_by text NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    expires_at timestamptz NOT NULL,
    max_uses   integer NOT NULL DEFAULT 1,
    uses       integer NOT NULL DEFAULT 0,
    created_at timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS photos (
    id                text PRIMARY KEY,
    album_id          text NOT NULL REFERENCES albums(id) ON DELETE CASCADE,
    uploader_id       text NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    storage_key       text NOT NULL,
    thumb_key         text,
    preview_key       text,
    original_filename text NOT NULL DEFAULT '',
    size              bigint NOT NULL DEFAULT 0,
    width             integer NOT NULL DEFAULT 0,
    height            integer NOT NULL DEFAULT 0,
    mime_type         text NOT NULL DEFAULT '',
    taken_at          timestamptz,
    latitude          double precision,
    longitude         double precision,
    caption           text NOT NULL DEFAULT '',
    created_at        timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX IF NOT EXISTS photos_album_created_idx ON photos (album_id, created_at DESC, id DESC);

CREATE TABLE IF NOT EXISTS comments (
    id         text PRIMARY KEY,
    photo_id   text NOT NULL REFERENCES photos(id) ON DELETE CASCADE,
    user_id    text NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    text       text NOT NULL,
    created_at timestamptz NOT NULL DEFAULT now(),
    updated_at timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX IF NOT EXISTS comments_photo_idx ON comments (photo_id, created_at);

CREATE TABLE IF NOT EXISTS likes (
    photo_id   text NOT NULL REFERENCES photos(id) ON DELETE CASCADE,
    user_id    text NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    created_at timestamptz NOT NULL DEFAULT now(),
    PRIMARY KEY (photo_id, user_id)
);

CREATE TABLE IF NOT EXISTS notifications (
    id           text PRIMARY KEY,
    user_id      text NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    type         text NOT NULL,
    payload_json jsonb NOT NULL DEFAULT '{}'::jsonb,
    read_at      timestamptz,
    created_at   timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX IF NOT EXISTS notifications_user_idx ON notifications (user_id, created_at DESC);

CREATE TABLE IF NOT EXISTS share_links (
    id         text PRIMARY KEY,
    album_id   text NOT NULL REFERENCES albums(id) ON DELETE CASCADE,
    token      text NOT NULL UNIQUE,
    created_by text NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    created_at timestamptz NOT NULL DEFAULT now(),
    expires_at timestamptz NOT NULL,
    revoked_at timestamptz
);

CREATE TABLE IF NOT EXISTS refresh_tokens (
    id         text PRIMARY KEY,
    user_id    text NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    token_hash text NOT NULL UNIQUE,
    expires_at timestamptz NOT NULL,
    revoked_at timestamptz,
    created_at timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX IF NOT EXISTS refresh_tokens_user_idx ON refresh_tokens (user_id);