_api

var BackupAllowOptionKeys = []string{"go_bark_key", "go_daily_report", "go_daily_report_status", "go_message_type", "go_ntfy_topic", "go_pushdeer_key", "kd_growth_break_icon_tasks", "kd_growth_ext_tasks", "kd_growth_sign_only", "kd_wenku_tasks_checkin_only", "kd_wenku_tasks_vip_matrix", "kd_wenku_tasks_vip_matrix_id_set", "ver4_rank_check", "ver4_lottery_check", "ver4_ban_open", "kd_renew_manager_alert", "kd_renew_manager_interval", "kd_renew_manager_open"}

var BackupUsersOptionDangerKeys = []string{"session_expired_at"}

var BackupUsersOptionKeys = []string{"go_bark_key", "go_daily_report", "go_message_type", "go_ntfy_topic", "go_pushdeer_key"}

var ExpiredTimeCache = _function.NewKV(
	ttlcache.WithTTL[string, int64](time.Hour),
	ttlcache.WithCapacity[string, int64](100),
)

var FaviconBinCache []byte

var FaviconCacheTime time.Time

var IndependentFEPath = []string{"/robots.txt", "/favicon.ico", "/icp.jsonp", "/site.jsonp"}

var NoFavicon = false

var RequestSingleFlight singleflight.Group

var RoleList = []string{_function.RoleDeleted, _function.RoleBanned, _function.RoleUser, _function.RoleVIP, _function.RoleAdmin}

var SettingsRules = map[string]*_function.OptionRule{
	"sign_mode": {
		Custom: func(val string) error {
			if val == "" {
				return nil
			}
			signMode := strings.SplitSeq(val, ",")
			for v := range signMode {
				if !slices.Contains([]string{"1", "2", "3"}, v) {
					return errors.New("invalid value " + v)
				}
			}
			return nil
		},
		Transform: func(val string) string {
			signMode := strings.Split(val, ",")

			if len(signMode) == 0 {
				signMode = append(signMode, "1")
			}

			return encodeSignMode(signMode)
		},
	},
	"mail_auth":                   {Enum: []string{"0", "1", "2"}},
	"enable_reg":                  {Enum: []string{"0", "1"}},
	"go_export_personal_data":     {Enum: []string{"0", "1"}},
	"go_import_personal_data":     {Enum: []string{"0", "1"}},
	"mail_secure":                 {Enum: []string{"none", "ssl", "tls"}},
	"cron_limit":                  {Min: _function.VPtr(int64(0))},
	"retry_max":                   {Min: _function.VPtr(int64(0))},
	"sign_sleep":                  {Min: _function.VPtr(int64(0))},
	"sign_multith":                {Min: _function.VPtr(int64(0))},
	"mail_port":                   {Min: _function.VPtr(int64(0)), Max: _function.VPtr(int64(65535))},
	"cktime":                      {Min: _function.VPtr(int64(0))},
	"go_re_check_in_max_interval": {Min: _function.VPtr(int64(1))},

	"sign_hour":            {Min: _function.VPtr(int64(-1)), Max: _function.VPtr(int64(23))},
	"go_daily_report_hour": {Min: _function.VPtr(int64(-1)), Max: _function.VPtr(int64(23))},

	"go_forum_sync_policy": {
		Enum: []string{"add_delete", "add_only", ""},
		Transform: func(val string) string {
			if val == "" {
				return "add_only"
			}
			return val
		},
	},

	"go_ntfy_addr":     {IsURL: true},
	"go_bark_addr":     {IsURL: true},
	"go_pushdeer_addr": {IsURL: true},

	"bduss_num": {Min: _function.VPtr(int64(-1)), Max: _function.VPtr(int64(999999999))},

	"go_favicon": {
		Custom: func(s string) error {
			if s == "" {
				return nil
			}

			if !strings.HasPrefix(s, "data:image/x-icon;base64,") {
				return errors.New("invalid favicon")
			}
			s = strings.TrimPrefix(s, "data:image/x-icon;base64,")
			if len(s) == 0 {
				return errors.New("invalid favicon")
			}

			icoBin, err := base64.StdEncoding.DecodeString(s)
			if err != nil {
				return errors.New("invalid favicon")
			}

			if len(icoBin) < 6 {
				return errors.New("invalid favicon")
			}

			reserved := binary.LittleEndian.Uint16(icoBin[0:2])
			typ := binary.LittleEndian.Uint16(icoBin[2:4])
			count := binary.LittleEndian.Uint16(icoBin[4:6])

			if reserved == 0 &&
				typ == 1 &&
				count > 0 {
				return nil
			}

			return errors.New("invalid favicon")
		},
		Transform: func(s string) string {
			if s == "" {
				FaviconBinCache = []byte{}
			} else {
				FaviconBinCache, _ = base64.StdEncoding.DecodeString(strings.TrimPrefix(s, "data:image/x-icon;base64,"))
				FaviconCacheTime = time.Now()
			}
			return s
		},
	},
}