feat: implement AI integration with backend configuration and rule-based enrichment actions

internal/actions/ai/enrich.go

@@ -0,0 +1,98 @@
+package ai
+
+import (
+	"context"
+	"time"
+
+	"git.pengzhan.dev/haopengzhan/rsspipe/internal/ai"
+	"git.pengzhan.dev/haopengzhan/rsspipe/internal/db"
+	"git.pengzhan.dev/haopengzhan/rsspipe/internal/models"
+	"git.pengzhan.dev/haopengzhan/rsspipe/internal/worker"
+	"go.uber.org/zap"
+)
+
+// LoadConfig fetches current AI provider configuration from system settings.
+func LoadConfig(database *db.DB) ai.Config {
+	settings, _ := database.GetSettingsMap()
+	enabled := settings["ai_enabled"] == "true" || settings["ai_enabled"] == "1"
+	provider := settings["ai_provider"]
+	if provider == "" {
+		provider = "openai"
+	}
+	baseURL := settings["ai_base_url"]
+	if baseURL == "" {
+		baseURL = "https://api.openai.com/v1"
+	}
+	model := settings["ai_model"]
+	if model == "" {
+		model = "gpt-4o-mini"
+	}
+	return ai.Config{
+		Enabled:  enabled,
+		Provider: provider,
+		BaseURL:  baseURL,
+		APIKey:   settings["ai_api_key"],
+		Model:    model,
+	}
+}
+
+// NewEnrichmentHandler creates a worker action handler for AI variant enrichment.
+func NewEnrichmentHandler(database *db.DB, client *ai.Client, log *zap.Logger) worker.ActionHandler {
+	return func(ctx context.Context, entry models.FeedEntry, params map[string]interface{}) (*worker.ActionResult, error) {
+		cfg := LoadConfig(database)
+		if cfg.APIKey == "" && cfg.Provider != "ollama" {
+			log.Warn("AI action skipped: API key is not configured in Settings > AI & Integrations",
+				zap.String("entry_id", entry.ID),
+				zap.String("provider", cfg.Provider),
+			)
+			return nil, nil
+		}
+
+		prompt, _ := params["prompt"].(string)
+		if prompt == "" {
+			prompt, _ = params["custom_prompt"].(string)
+		}
+		vKey, _ := params["variant_key"].(string)
+		if vKey == "" {
+			vKey = "ai_summary"
+		}
+		cType, _ := params["content_type"].(string)
+		if cType == "" {
+			cType = "text"
+		}
+
+		resultText, err := client.GenerateEnrichment(ctx, cfg, prompt, entry)
+		if err != nil {
+			log.Error("AI enrichment generation failed",
+				zap.String("entry_id", entry.ID),
+				zap.String("model", cfg.Model),
+				zap.Error(err),
+			)
+			return nil, err
+		}
+
+		variant := models.EntryVariant{
+			EntryID:     entry.ID,
+			VariantKey:  vKey,
+			ContentType: cType,
+			TextValue:   resultText,
+			Metadata: map[string]interface{}{
+				"model":       cfg.Model,
+				"provider":    cfg.Provider,
+				"prompt_used": prompt,
+			},
+			CreatedAt: time.Now(),
+			UpdatedAt: time.Now(),
+		}
+
+		log.Info("AI enrichment completed",
+			zap.String("entry_id", entry.ID),
+			zap.String("variant_key", vKey),
+			zap.String("model", cfg.Model),
+		)
+
+		return &worker.ActionResult{
+			ResultVariant: &variant,
+		}, nil
+	}
+}