115 lines
3.7 KiB
Go
115 lines
3.7 KiB
Go
package roomadmin
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import (
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"context"
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"database/sql"
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"encoding/json"
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"fmt"
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"slices"
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"time"
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"hyapp-admin-server/internal/appctx"
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)
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var roomSeatCountCandidates = []int32{10, 15, 20, 25, 30}
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type RoomConfig struct {
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CandidateSeatCounts []int32 `json:"candidateSeatCounts"`
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AllowedSeatCounts []int32 `json:"allowedSeatCounts"`
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DefaultSeatCount int32 `json:"defaultSeatCount"`
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UpdatedAtMS int64 `json:"updatedAtMs"`
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}
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// GetRoomConfig 读取房间座位数配置；缺行时返回产品默认值，不阻塞首次打开配置页。
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func (s *Service) GetRoomConfig(ctx context.Context) (RoomConfig, error) {
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if s.db == nil {
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return RoomConfig{}, fmt.Errorf("room mysql is not configured")
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}
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row := s.db.QueryRowContext(ctx, `
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SELECT allowed_seat_counts, default_seat_count, updated_at_ms
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FROM room_seat_configs
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WHERE app_code = ?
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`, appctx.FromContext(ctx))
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var rawAllowed string
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config := defaultRoomConfig()
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if err := row.Scan(&rawAllowed, &config.DefaultSeatCount, &config.UpdatedAtMS); err != nil {
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if err == sql.ErrNoRows {
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return config, nil
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}
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return RoomConfig{}, err
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}
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if err := json.Unmarshal([]byte(rawAllowed), &config.AllowedSeatCounts); err != nil {
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return RoomConfig{}, err
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}
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return normalizeRoomConfig(config)
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}
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// UpdateRoomConfig 保存后台房间配置；候选集合固定，后台只控制启用项和默认值。
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func (s *Service) UpdateRoomConfig(ctx context.Context, req updateRoomConfigRequest) (RoomConfig, error) {
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if s.db == nil {
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return RoomConfig{}, fmt.Errorf("room mysql is not configured")
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}
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config, err := normalizeRoomConfig(RoomConfig{
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AllowedSeatCounts: req.AllowedSeatCounts,
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DefaultSeatCount: req.DefaultSeatCount,
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UpdatedAtMS: time.Now().UTC().UnixMilli(),
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})
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if err != nil {
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return RoomConfig{}, err
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}
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rawAllowed, err := json.Marshal(config.AllowedSeatCounts)
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if err != nil {
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return RoomConfig{}, err
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}
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now := config.UpdatedAtMS
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if _, err := s.db.ExecContext(ctx, `
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INSERT INTO room_seat_configs (app_code, allowed_seat_counts, default_seat_count, created_at_ms, updated_at_ms)
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VALUES (?, ?, ?, ?, ?)
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ON DUPLICATE KEY UPDATE
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allowed_seat_counts = VALUES(allowed_seat_counts),
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default_seat_count = VALUES(default_seat_count),
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updated_at_ms = VALUES(updated_at_ms)
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`, appctx.FromContext(ctx), string(rawAllowed), config.DefaultSeatCount, now, now); err != nil {
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return RoomConfig{}, err
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}
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return config, nil
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}
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func defaultRoomConfig() RoomConfig {
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return RoomConfig{
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CandidateSeatCounts: append([]int32(nil), roomSeatCountCandidates...),
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AllowedSeatCounts: append([]int32(nil), roomSeatCountCandidates...),
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DefaultSeatCount: 15,
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}
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}
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func normalizeRoomConfig(config RoomConfig) (RoomConfig, error) {
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candidateSet := make(map[int32]bool, len(roomSeatCountCandidates))
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for _, candidate := range roomSeatCountCandidates {
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candidateSet[candidate] = true
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}
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seen := make(map[int32]bool, len(config.AllowedSeatCounts))
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allowed := make([]int32, 0, len(config.AllowedSeatCounts))
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for _, value := range config.AllowedSeatCounts {
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if !candidateSet[value] {
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return RoomConfig{}, fmt.Errorf("%w: 座位数只能选择 10、15、20、25、30", ErrInvalidArgument)
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}
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if seen[value] {
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return RoomConfig{}, fmt.Errorf("%w: 座位数不能重复", ErrInvalidArgument)
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}
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seen[value] = true
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allowed = append(allowed, value)
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}
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if len(allowed) == 0 {
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return RoomConfig{}, fmt.Errorf("%w: 至少启用一个座位数", ErrInvalidArgument)
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}
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slices.Sort(allowed)
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if !seen[config.DefaultSeatCount] {
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return RoomConfig{}, fmt.Errorf("%w: 默认座位数必须在已启用座位数中", ErrInvalidArgument)
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}
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config.CandidateSeatCounts = append([]int32(nil), roomSeatCountCandidates...)
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config.AllowedSeatCounts = allowed
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return config, nil
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}
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