2f584c1f2c
The Go module name has been changed from `carrot_bbs` to `with_you`, which requires all import paths to be updated throughout the codebase and by external consumers. BREAKING CHANGE: Module name changed from carrot_bbs to with_you. All imports and dependencies must be updated from carrot_bbs/* to with_you/*.
130 lines
3.3 KiB
Go
130 lines
3.3 KiB
Go
package service
|
||
|
||
import (
|
||
"time"
|
||
|
||
"with_you/internal/cache"
|
||
"with_you/internal/model"
|
||
"with_you/internal/repository"
|
||
)
|
||
|
||
// 频道全量列表缓存 TTL（频道变更少，可较长；管理端写入后会主动失效）
|
||
const channelAllListCacheTTL = 10 * time.Minute
|
||
|
||
type ChannelService interface {
|
||
ListActive() ([]*model.Channel, error)
|
||
ListAll() ([]*model.Channel, error)
|
||
MapByIDs(ids []string) (map[string]*model.Channel, error)
|
||
Create(name, slug, description string, sortOrder int, isActive bool) (*model.Channel, error)
|
||
Update(id, name, slug, description string, sortOrder int, isActive bool) (*model.Channel, error)
|
||
Delete(id string) error
|
||
}
|
||
|
||
type channelServiceImpl struct {
|
||
channelRepo repository.ChannelRepository
|
||
cache cache.Cache
|
||
}
|
||
|
||
func NewChannelService(channelRepo repository.ChannelRepository, c cache.Cache) ChannelService {
|
||
return &channelServiceImpl{channelRepo: channelRepo, cache: c}
|
||
}
|
||
|
||
func (s *channelServiceImpl) invalidateChannelListCache() {
|
||
if s.cache != nil {
|
||
cache.InvalidateChannelList(s.cache)
|
||
}
|
||
}
|
||
|
||
func (s *channelServiceImpl) listAllFromDB() ([]*model.Channel, error) {
|
||
return s.channelRepo.ListAll()
|
||
}
|
||
|
||
func (s *channelServiceImpl) ListAll() ([]*model.Channel, error) {
|
||
if s.cache == nil {
|
||
return s.listAllFromDB()
|
||
}
|
||
cs := cache.GetSettings()
|
||
return cache.GetOrLoadTyped(s.cache, cache.ChannelsAllListKey(), channelAllListCacheTTL, cs.JitterRatio, cs.NullTTL, s.listAllFromDB)
|
||
}
|
||
|
||
func (s *channelServiceImpl) ListActive() ([]*model.Channel, error) {
|
||
all, err := s.ListAll()
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
out := make([]*model.Channel, 0, len(all))
|
||
for _, ch := range all {
|
||
if ch != nil && ch.IsActive {
|
||
c := *ch
|
||
out = append(out, &c)
|
||
}
|
||
}
|
||
return out, nil
|
||
}
|
||
|
||
// MapByIDs 始终基于全量频道列表（Redis 命中则零 SQL，否则一次 ListAll），与 ListActive / 公开列表共用同一缓存快照。
|
||
func (s *channelServiceImpl) MapByIDs(ids []string) (map[string]*model.Channel, error) {
|
||
if len(ids) == 0 {
|
||
return nil, nil
|
||
}
|
||
all, err := s.ListAll()
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
byID := make(map[string]*model.Channel, len(all))
|
||
for _, ch := range all {
|
||
if ch != nil {
|
||
byID[ch.ID] = ch
|
||
}
|
||
}
|
||
out := make(map[string]*model.Channel, len(ids))
|
||
for _, id := range ids {
|
||
if ch, ok := byID[id]; ok {
|
||
out[id] = ch
|
||
}
|
||
}
|
||
return out, nil
|
||
}
|
||
|
||
func (s *channelServiceImpl) Create(name, slug, description string, sortOrder int, isActive bool) (*model.Channel, error) {
|
||
channel := &model.Channel{
|
||
Name: name,
|
||
Slug: slug,
|
||
Description: description,
|
||
SortOrder: sortOrder,
|
||
IsActive: isActive,
|
||
}
|
||
if err := s.channelRepo.Create(channel); err != nil {
|
||
return nil, err
|
||
}
|
||
s.invalidateChannelListCache()
|
||
return channel, nil
|
||
}
|
||
|
||
func (s *channelServiceImpl) Update(id, name, slug, description string, sortOrder int, isActive bool) (*model.Channel, error) {
|
||
channel, err := s.channelRepo.GetByID(id)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
channel.Name = name
|
||
channel.Slug = slug
|
||
channel.Description = description
|
||
channel.SortOrder = sortOrder
|
||
channel.IsActive = isActive
|
||
if err := s.channelRepo.Update(channel); err != nil {
|
||
return nil, err
|
||
}
|
||
s.invalidateChannelListCache()
|
||
return channel, nil
|
||
}
|
||
|
||
func (s *channelServiceImpl) Delete(id string) error {
|
||
err := s.channelRepo.Delete(id)
|
||
if err != nil {
|
||
return err
|
||
}
|
||
s.invalidateChannelListCache()
|
||
return nil
|
||
}
|
||
|