package handler

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

	"github.com/zs/InsightReply/internal/repository"
)

type TweetHandler struct {
	repo *repository.TweetRepository
}

func NewTweetHandler(repo *repository.TweetRepository) *TweetHandler {
	return &TweetHandler{repo: repo}
}

// GetHotTweets returns the top heating tweets spanning across all tracking targets
func (h *TweetHandler) GetHotTweets(w http.ResponseWriter, r *http.Request) {
	log.Printf("[TweetHandler] GetHotTweets called from %s", r.RemoteAddr)

	tweets, err := h.repo.GetTopHeatingTweets(50)
	if err != nil {
		log.Printf("[TweetHandler] ERROR GetTopHeatingTweets: %v", err)
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusInternalServerError)
		json.NewEncoder(w).Encode(map[string]interface{}{"error": "failed to retrieve hot tweets"})
		return
	}

	log.Printf("[TweetHandler] GetHotTweets returning %d tweets", len(tweets))
	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(tweets)
}

// SearchTweets provides the multi-rule filtering API for Epic 5
func (h *TweetHandler) GetSearchTweets(w http.ResponseWriter, r *http.Request) {
	keyword := r.URL.Query().Get("keyword")
	handle := r.URL.Query().Get("handle")
	log.Printf("[TweetHandler] SearchTweets called: keyword=%q handle=%q", keyword, handle)

	tweets, err := h.repo.SearchTweets(keyword, handle, 50)
	if err != nil {
		log.Printf("[TweetHandler] ERROR SearchTweets: %v", err)
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusInternalServerError)
		json.NewEncoder(w).Encode(map[string]interface{}{"error": "failed to search tweets"})
		return
	}

	log.Printf("[TweetHandler] SearchTweets returning %d tweets", len(tweets))
	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(tweets)
}
