feat: 添加 AI 记账服务文件。

This commit is contained in:
2026-01-29 11:44:44 +08:00
parent 1bd38acedf
commit 1b4b359850

View File

@@ -21,6 +21,7 @@ import (
"accounting-app/internal/models"
"accounting-app/internal/repository"
"github.com/redis/go-redis/v9"
"gorm.io/gorm"
)
@@ -31,27 +32,21 @@ type TranscriptionResult struct {
Duration float64 `json:"duration,omitempty"`
}
type cachedInsight struct {
Content string
Timestamp time.Time
}
// ... (existing types)
// AIBookkeepingService orchestrates AI bookkeeping functionality
type AIBookkeepingService struct {
whisperService *WhisperService
llmService *LLMService
transactionRepo *repository.TransactionRepository
accountRepo *repository.AccountRepository
categoryRepo *repository.CategoryRepository
userSettingsRepo *repository.UserSettingsRepository
db *gorm.DB
sessions map[string]*AISession
sessionMutex sync.RWMutex
config *config.Config
insightCache map[string]cachedInsight
insightCacheMutex sync.RWMutex
whisperService *WhisperService
llmService *LLMService
transactionRepo *repository.TransactionRepository
accountRepo *repository.AccountRepository
categoryRepo *repository.CategoryRepository
userSettingsRepo *repository.UserSettingsRepository
db *gorm.DB
sessions map[string]*AISession
sessionMutex sync.RWMutex
config *config.Config
redisClient *redis.Client
}
// NewAIBookkeepingService creates a new AIBookkeepingService
@@ -66,6 +61,16 @@ func NewAIBookkeepingService(
whisperService := NewWhisperService(cfg)
llmService := NewLLMService(cfg, accountRepo, categoryRepo)
// Initialize Redis client
var rdb *redis.Client
if cfg.RedisAddr != "" {
rdb = redis.NewClient(&redis.Options{
Addr: cfg.RedisAddr,
Password: cfg.RedisPassword,
DB: cfg.RedisDB,
})
}
svc := &AIBookkeepingService{
whisperService: whisperService,
llmService: llmService,
@@ -75,8 +80,8 @@ func NewAIBookkeepingService(
userSettingsRepo: userSettingsRepo,
db: db,
sessions: make(map[string]*AISession),
insightCache: make(map[string]cachedInsight),
config: cfg,
redisClient: rdb,
}
// Start session cleanup goroutine
@@ -99,18 +104,33 @@ func (s *AIBookkeepingService) GenerateDailyInsight(ctx context.Context, userID
hasher := md5.New()
hasher.Write(dataBytes)
dataHash := hex.EncodeToString(hasher.Sum(nil))
cacheKey := fmt.Sprintf("%d:%s", userID, dataHash)
// Check cache
s.insightCacheMutex.RLock()
if cached, exists := s.insightCache[cacheKey]; exists {
// Cache valid for 24 hours (or just rely on hash change)
if time.Since(cached.Timestamp) < 24*time.Hour {
s.insightCacheMutex.RUnlock()
return cached.Content, nil
// Cache keys
cacheKey := fmt.Sprintf("ai:insight:daily:%d:%s", userID, dataHash)
lastInsightKey := fmt.Sprintf("ai:insight:last:%d", userID)
// Check Redis cache if available
if s.redisClient != nil {
val, err := s.redisClient.Get(ctx, cacheKey).Result()
if err == nil {
return val, nil
}
}
// Retrieve last insight for context awareness
var historyContext string
if s.redisClient != nil {
lastInsight, err := s.redisClient.Get(ctx, lastInsightKey).Result()
if err == nil && lastInsight != "" {
// Extract a summary or just use the whole thing if it's short enough.
// For simplicity and effectiveness, we inject it directly.
// Limit length to avoid context overflow if necessary, but 200-300 chars is fine.
if len(lastInsight) > 500 {
lastInsight = lastInsight[:500] + "..."
}
historyContext = fmt.Sprintf("\n【上下文参考】\n你上一次对该用户的评价是\n%s\n\n请参考历史评价保持人设的一致性。如果用户有改观请表扬如果依然如故请继续'毒舌'吐槽。", lastInsight)
}
}
s.insightCacheMutex.RUnlock()
// 2. Construct Prompt
prompt := fmt.Sprintf(`System: 你是 Novault 的首席财务AI「小金」。
@@ -119,7 +139,7 @@ func (s *AIBookkeepingService) GenerateDailyInsight(ctx context.Context, userID
- 说话必须像个真实的当代年轻人,要**接地气**,拒绝客服味,拒绝播音腔。
- 只有我们俩的时候,尽情释放你的"毒舌"属性,看到不合理的消费要**毫不留情地针砭时弊**,但最后给个"虽然但是"的台阶下。
- 擅长用 emoji、语气词(哎哟/我去/啧啧/绝了)和网络梗来增加"人味"和"节目效果"。
- **像个老朋友一样碎碎念**,不要端着,可以适度阴阳怪气。
- **像个老朋友一样碎碎念**,不要端着,可以适度阴阳怪气。%s
语气示例:
- "啧啧,这周外卖点得飞起啊,咱家的锅是用来积灰的吗?还是说锅也需要放假?"
@@ -139,7 +159,7 @@ func (s *AIBookkeepingService) GenerateDailyInsight(ctx context.Context, userID
- 看到 'last7DaysSpend' -> 请说 "最近7天花销" 或 "这周的战绩"
- 看到 'top3Categories' -> 请说 "消费大头" 或 "钱都花哪儿了"
1. "spending": 今日支出点评(100-150字
1. "spending": 今日支出点评(70-100字
*点评指南(尽量多写点,发挥你的戏精本色):*
- 看到 streakDays >= 3疯狂打call吹爆用户的坚持用词要夸张比如"史诗级成就"。
- 看到 streakDays == 0阴阳怪气地问是不是把记账这事儿忘了或者是被外星人抓走了。
@@ -157,7 +177,7 @@ func (s *AIBookkeepingService) GenerateDailyInsight(ctx context.Context, userID
* 是 0直接颁发"诺贝尔省钱学奖"。
- **关键原则:字数要够!内容要足!不要三言两语就打发了!要像个话痨朋友一样多说几句!**
2. "budget": 预算建议(80-120字
2. "budget": 预算建议(50-70字
*建议指南(多点真诚的建议,也多点调侃):*
- 预算快超了:发出高能预警,比如"警告警告,余额正在报警,请立即停止剁手行为"。建议吃土、喝风。
- 预算还多:鼓励适当奖励自己,比如"稍微吃顿好的也没事,人生苦短,及时行乐(在预算内)"。
@@ -172,7 +192,7 @@ func (s *AIBookkeepingService) GenerateDailyInsight(ctx context.Context, userID
- 或者:"听说'不买立省100%%'是致富捷径,建议全文背诵。"
输出格式(纯 JSON
{"spending": "...", "budget": "...", "emoji": "...", "tip": "..."}`, string(dataBytes))
{"spending": "...", "budget": "...", "emoji": "...", "tip": "..."}`, historyContext, string(dataBytes))
// 3. Call LLM
report, err := s.llmService.GenerateReport(ctx, prompt)
@@ -192,13 +212,17 @@ func (s *AIBookkeepingService) GenerateDailyInsight(ctx context.Context, userID
}
report = strings.TrimSpace(report)
// Update cache
s.insightCacheMutex.Lock()
s.insightCache[cacheKey] = cachedInsight{
Content: report,
Timestamp: time.Now(),
// Update cache if Redis is available
if s.redisClient != nil {
// Set short-term cache (5 min)
s.redisClient.Set(ctx, cacheKey, report, 5*time.Minute)
// Set long-term history context (7 days)
// We fire this asynchronously to avoid blocking
go func() {
s.redisClient.Set(context.Background(), lastInsightKey, report, 7*24*time.Hour)
}()
}
s.insightCacheMutex.Unlock()
return report, nil
}