freedakgmail
84 lines
2.6 KiB
Go
84 lines
2.6 KiB
Go
// Package playback 实现以 MA 码为维度的播放数据聚合与分账结算（二期 F09/F18）。
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// 对应需求9（统一维度数据聚合）、需求21（可信播放数据与分账依据）。
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//
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// MVP 阶段用内存存储；生产可替换为 ClickHouse（明细）+ 链上锚定（可信摘要）。
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package playback
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import (
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"fmt"
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"sync"
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"github.com/tcs-iptv/tcs/internal/model"
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)
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// Store 播放事件存储与聚合。
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type Store struct {
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mu sync.RWMutex
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events map[string][]model.PlaybackEvent // ccCode -> events
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}
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// NewStore 创建播放数据存储。
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func NewStore() *Store {
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return &Store{events: make(map[string][]model.PlaybackEvent)}
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}
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// Ingest 批量写入播放事件（幂等性由上层保证；此处仅追加）。
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// 返回接收条数。
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func (s *Store) Ingest(events []model.PlaybackEvent) int {
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s.mu.Lock()
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defer s.mu.Unlock()
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n := 0
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for _, e := range events {
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if e.CCCode == "" {
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continue
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}
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s.events[e.CCCode] = append(s.events[e.CCCode], e)
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n++
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}
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return n
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}
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// Summary 按 MA 码聚合可信播放数据（需求9-AC2、需求21-AC1）。
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func (s *Store) Summary(ccCode string) model.PlaybackSummary {
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s.mu.RLock()
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defer s.mu.RUnlock()
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sum := model.PlaybackSummary{CCCode: ccCode, ByPlatform: map[string]model.PlatformMetric{}}
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for _, e := range s.events[ccCode] {
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pm := sum.ByPlatform[e.PlatformID]
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switch e.EventType {
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case model.EventPlay:
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sum.TotalPlays++
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pm.Plays++
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case model.EventComplete:
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sum.TotalComplete++
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pm.Complete++
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}
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sum.TotalRevenue += e.RevenueCent
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pm.RevenueCent += e.RevenueCent
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sum.ByPlatform[e.PlatformID] = pm
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}
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return sum
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}
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// ComputeSettlement 基于聚合的可信播放收益执行分账（需求21-AC3）。
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// 分账依据明确标注为"链上可信播放数据"，保证 CP 与运营商口径一致。
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func (s *Store) ComputeSettlement(ccCode, period string, cfg model.RevenueShareConfig) (model.Settlement, error) {
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if cfg.CPShareBp+cfg.PlatformShareBp+cfg.HubFeeBp != 10000 {
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return model.Settlement{}, fmt.Errorf("playback: share config must sum to 10000bp, got %d",
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cfg.CPShareBp+cfg.PlatformShareBp+cfg.HubFeeBp)
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}
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sum := s.Summary(ccCode)
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total := sum.TotalRevenue
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cp := total * int64(cfg.CPShareBp) / 10000
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platform := total * int64(cfg.PlatformShareBp) / 10000
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// 服务费取余数，保证三者之和精确等于 total（避免取整丢分）
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hub := total - cp - platform
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return model.Settlement{
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CCCode: ccCode, Period: period, TotalRevenue: total,
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CPShare: cp, PlatformShare: platform, HubFee: hub,
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DataSource: "链上可信播放数据",
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}, nil
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}
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