-- 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, auto_approve_requests,
       debug_mode_enabled, 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;

-- name: CreateUserAdmin :one
-- Admin-driven user creation. Distinct from CreateUser/CreateUserFirstAdminRace:
-- the caller (an admin) supplies all five fields explicitly including is_admin,
-- so an admin can promote on creation. Used by POST /api/admin/users.
INSERT INTO users (username, password_hash, api_token, is_admin, display_name)
VALUES ($1, $2, $3, $4, $5)
RETURNING *;

-- name: DeleteUser :exec
-- Hard delete with cascade. The schema's ON DELETE CASCADE foreign keys
-- handle plays/likes/sessions/etc. Caller must enforce the last-admin
-- guard at the HTTP layer (count admins, refuse if target is the only
-- admin). The lidarr_quarantine, general_likes*, play_events,
-- sessions, and other user-FK tables all have ON DELETE CASCADE so
-- this is a clean drop.
DELETE FROM users WHERE id = $1;

-- name: ResetUserPassword :exec
-- Admin-driven password reset: caller writes a new hashed password to
-- the target user's row. No knowledge of the old password is required
-- (this is the admin path; self-service "knows current password" is
-- a separate U3 query).
UPDATE users
   SET password_hash = $2
 WHERE id = $1;

-- name: UpdateUserAutoApprove :one
-- Toggle the per-user auto_approve_requests flag.
UPDATE users
   SET auto_approve_requests = $2
 WHERE id = $1
RETURNING *;

-- name: SetDebugMode :one
-- Toggle the per-account diagnostics/debug-reporting opt-in. Admin-driven
-- from /admin (flip remotely while a bug is live) or self-driven OFF from
-- the client. Returns the updated row so the handler can echo it.
UPDATE users
   SET debug_mode_enabled = $2
 WHERE id = $1
RETURNING *;

-- name: ChangeUserPassword :exec
-- Self-service password change. Caller (HTTP handler) verifies the
-- current password before calling this. Distinct from
-- ResetUserPassword which is admin-driven (no current-password
-- check).
UPDATE users SET password_hash = $2 WHERE id = $1;

-- name: UpdateUserProfile :one
-- Self-service: set display name and/or email. Both fields are
-- nullable in the DB; pass NULL ptr to clear, non-NULL ptr to set.
UPDATE users
   SET display_name = $2,
       email        = $3
 WHERE id = $1
RETURNING *;

-- name: RegenerateApiToken :one
-- Self-service: caller wants a new API token. Used by the /settings
-- API Token card's "Regenerate" button.
UPDATE users SET api_token = $2 WHERE id = $1
RETURNING *;

-- name: GetUserByEmail :one
-- Used by forgot-password lookup. Lowercase comparison both sides
-- to keep the unique index happy and to make the lookup
-- case-insensitive.
SELECT * FROM users WHERE lower(email) = lower($1);

-- name: UpdateUserTimezone :exec
-- Sets the user's IANA timezone and bumps timezone_updated_at. The
-- handler validates the timezone string via time.LoadLocation before
-- calling this; the DB does not re-validate.
UPDATE users
   SET timezone = $2,
       timezone_updated_at = now()
 WHERE id = $1;

-- name: ListActiveUsersWithTimezones :many
-- Returns (id, timezone) for every user with a play in the last 7
-- days. The system-playlist scheduler iterates this list at startup
-- and during its hourly reconciliation to discover newly-active /
-- no-longer-active users.
SELECT u.id, u.timezone FROM users u
 WHERE EXISTS (
     SELECT 1 FROM play_events pe
      WHERE pe.user_id = u.id
        AND pe.started_at > now() - INTERVAL '7 days'
   );
