package handlers

import (
	"database/sql"
	"log"
	"net/http"
	"strconv"

	templateHandlers "synlotto-website/internal/handlers/template"
	httpHelpers "synlotto-website/internal/helpers/http"
	templateHelpers "synlotto-website/internal/helpers/template"
	notificationsStorage "synlotto-website/internal/storage/notifications"
)

func NotificationsHandler(db *sql.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		data := templateHandlers.BuildTemplateData(db, w, r)
		context := templateHelpers.TemplateContext(w, r, data)

		tmpl := templateHelpers.LoadTemplateFiles("index.html", "templates/account/notifications/index.html")

		err := tmpl.ExecuteTemplate(w, "layout", context)
		if err != nil {
			log.Println("❌ Template render error:", err)
			http.Error(w, "Error rendering notifications page", http.StatusInternalServerError)
		}
	}
}

func MarkNotificationReadHandler(db *sql.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		notificationIDStr := r.URL.Query().Get("id")
		notificationID, err := strconv.Atoi(notificationIDStr)
		if err != nil {
			http.Error(w, "Invalid notification ID", http.StatusBadRequest)
			return
		}

		session, _ := httpHelpers.GetSession(w, r)
		userID, ok := session.Values["user_id"].(int)
		if !ok {
			http.Error(w, "Unauthorized", http.StatusUnauthorized)
			return
		}

		notification, err := notificationsStorage.GetNotificationByID(db, userID, notificationID)
		if err != nil {
			log.Printf("❌ Notification not found or belongs to another user: %v", err)
			notification = nil
		} else if !notification.IsRead {
			err = notificationsStorage.MarkNotificationAsRead(db, userID, notificationID)
			if err != nil {
				log.Printf("⚠️ Failed to mark as read: %v", err)
			}
		}

		data := templateHandlers.BuildTemplateData(db, w, r)
		context := templateHelpers.TemplateContext(w, r, data)
		context["Notification"] = notification

		tmpl := templateHelpers.LoadTemplateFiles("read.html", "templates/account/notifications/read.html")

		err = tmpl.ExecuteTemplate(w, "layout", context)
		if err != nil {
			log.Printf("❌ Template render error: %v", err)
			http.Error(w, "Template render error", http.StatusInternalServerError)
		}
	}
}