-- name: CreateUser :one
INSERT INTO users (username, password_hash, api_token, is_admin, display_name)
VALUES ($1, $2, $3, $4, $5)
RETURNING *;

-- name: CreateUserFirstAdminRace :one
-- Inserts a new user; sets is_admin=true ONLY when no users currently
-- exist. The (SELECT NOT EXISTS ...) subquery is evaluated at INSERT
-- time within the same statement, so the result reflects committed
-- state at that moment.
--
-- Race semantics: two concurrent calls in an empty-users state may
-- both observe "no users" and both insert with is_admin=true. That's
-- benign — having two admins from the gate is fine; what matters is
-- that there's AT LEAST one. If the two calls happened to share the
-- same username, the unique constraint on users.username arbitrates
-- and the second caller's INSERT fails with a unique violation. The
-- caller (registration handler) can retry as a regular non-admin in
-- that case (or surface a "username taken" error to the user).
INSERT INTO users (username, password_hash, api_token, is_admin, display_name)
VALUES (
    $1, $2, $3,
    (SELECT NOT EXISTS (SELECT 1 FROM users)),
    $4
)
RETURNING *;

-- name: GetUserByUsername :one
SELECT * FROM users WHERE username = $1;

-- name: GetUserByAPIToken :one
SELECT * FROM users WHERE api_token = $1;

-- name: CountUsers :one
SELECT count(*) FROM users;

-- name: SetSubsonicPassword :exec
-- Stores (or clears with NULL) the per-user Subsonic legacy credential used
-- for t/s and p auth on /rest/*. Must be plaintext; see migration 0003.
UPDATE users SET subsonic_password = $2 WHERE id = $1;

-- name: GetUserByID :one
SELECT * FROM users WHERE id = $1;

-- name: SetListenBrainzToken :exec
UPDATE users
SET listenbrainz_token = $2,
    listenbrainz_enabled = CASE WHEN COALESCE($2, '') = '' THEN FALSE ELSE listenbrainz_enabled END
WHERE id = $1;

-- name: SetListenBrainzEnabled :exec
UPDATE users
SET listenbrainz_enabled = $2
WHERE id = $1;

-- name: ListUsers :many
-- Admin user-management list. Sort newest-first.
SELECT id, username, display_name, is_admin, created_at
  FROM users
 ORDER BY created_at DESC;

-- name: CountAdmins :one
SELECT count(*) FROM users WHERE is_admin = true;

-- name: UpdateUserAdmin :one
-- Sets is_admin to the given value. Returns the updated row so the
-- handler can echo it back to the caller.
UPDATE users
   SET is_admin = $2
 WHERE id = $1
RETURNING *;

-- name: GetListenBrainzConfig :one
-- Returns the user's LB token + enabled flag and the most recent
-- play_events.scrobbled_at for last-scrobbled-at status.
SELECT
    u.listenbrainz_token,
    u.listenbrainz_enabled,
    (SELECT MAX(pe.scrobbled_at)::timestamptz
     FROM play_events pe
     WHERE pe.user_id = u.id) AS last_scrobbled_at
FROM users u
WHERE u.id = $1;