package handlers

import (
	"encoding/json"
	"net/http"

	"boc/briefing"
)

// BriefingHandler hanterar daily briefing requests
type BriefingHandler struct {
	engine *briefing.BriefingEngine
}

func NewBriefingHandler(engine *briefing.BriefingEngine) *BriefingHandler {
	return &BriefingHandler{engine: engine}
}

// GetDailyBriefing returnerar användarens dagsöversikt
func (h *BriefingHandler) GetDailyBriefing(w http.ResponseWriter, r *http.Request) {
	// Hämta user ID från context (satt av auth middleware)
	// För utveckling: använd default user
	userID := "3847477b-3d56-4975-9157-ae8f9ce52aa7"
	
	briefing, err := h.engine.GenerateDailyBriefing(r.Context(), userID)
	if err != nil {
		http.Error(w, `{"error":"failed to generate briefing"}`, http.StatusInternalServerError)
		return
	}
	
	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(briefing)
}

// GetPriority returnerar endast prioritetssektionen
func (h *BriefingHandler) GetPriority(w http.ResponseWriter, r *http.Request) {
	userID := "3847477b-3d56-4975-9157-ae8f9ce52aa7"
	
	briefing, err := h.engine.GenerateDailyBriefing(r.Context(), userID)
	if err != nil {
		http.Error(w, `{"error":"failed to generate briefing"}`, http.StatusInternalServerError)
		return
	}
	
	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(briefing.Priority)
}

// GetAlerts returnerar endast alerts
func (h *BriefingHandler) GetAlerts(w http.ResponseWriter, r *http.Request) {
	userID := "3847477b-3d56-4975-9157-ae8f9ce52aa7"
	
	briefing, err := h.engine.GenerateDailyBriefing(r.Context(), userID)
	if err != nil {
		http.Error(w, `{"error":"failed to generate briefing"}`, http.StatusInternalServerError)
		return
	}
	
	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(map[string]interface{}{
		"alerts": briefing.Alerts,
	})
}

// GetRecommendations returnerar endast rekommendationer
func (h *BriefingHandler) GetRecommendations(w http.ResponseWriter, r *http.Request) {
	userID := "3847477b-3d56-4975-9157-ae8f9ce52aa7"
	
	briefing, err := h.engine.GenerateDailyBriefing(r.Context(), userID)
	if err != nil {
		http.Error(w, `{"error":"failed to generate briefing"}`, http.StatusInternalServerError)
		return
	}
	
	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(map[string]interface{}{
		"recommendations": briefing.Recommendations,
	})
}

// GetWorkPlan returnerar endast arbetsplanen
func (h *BriefingHandler) GetWorkPlan(w http.ResponseWriter, r *http.Request) {
	userID := "3847477b-3d56-4975-9157-ae8f9ce52aa7"
	
	briefing, err := h.engine.GenerateDailyBriefing(r.Context(), userID)
	if err != nil {
		http.Error(w, `{"error":"failed to generate briefing"}`, http.StatusInternalServerError)
		return
	}
	
	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(briefing.WorkPlan)
}