package handlers

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

	templateHelpers "synlotto-website/internal/helpers/template"
	services "synlotto-website/internal/services/tickets"

	"synlotto-website/internal/models"
)

// ToDo: need to fix flash messages from new gin context
func AdminTriggersHandler(db *sql.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		data := models.TemplateData{}
		context := templateHelpers.TemplateContext(w, r, data)

		if flash := r.URL.Query().Get("flash"); flash != "" {
			context["Flash"] = flash
		}

		if r.Method == http.MethodPost {
			action := r.FormValue("action")
			flashMsg := ""

			switch action {
			case "match":
				stats, err := services.RunTicketMatching(db, "manual")
				if err != nil {
					http.Error(w, "Matching failed: "+err.Error(), http.StatusInternalServerError)
					return
				}
				flashMsg = fmt.Sprintf("✅ Matched %d tickets, %d winners.", stats.TicketsMatched, stats.WinnersFound)

			case "prizes":
				err := services.UpdateMissingPrizes(db)
				if err != nil {
					http.Error(w, "Prize update failed: "+err.Error(), http.StatusInternalServerError)
					return
				}
				flashMsg = "✅ Missing prizes updated."

			case "refresh_prizes":
				err := services.RefreshTicketPrizes(db)
				if err != nil {
					http.Error(w, "Refresh failed: "+err.Error(), http.StatusInternalServerError)
					return
				}
				flashMsg = "✅ Ticket prizes refreshed."

			case "run_all":
				stats, err := services.RunTicketMatching(db, "manual")
				if err != nil {
					http.Error(w, "Matching failed: "+err.Error(), http.StatusInternalServerError)
					return
				}
				err = services.UpdateMissingPrizes(db)
				if err != nil {
					http.Error(w, "Prize update failed: "+err.Error(), http.StatusInternalServerError)
					return
				}
				flashMsg = fmt.Sprintf("✅ Matched %d tickets, %d winners. Prizes updated.", stats.TicketsMatched, stats.WinnersFound)

			default:
				flashMsg = "⚠️ Unknown action."
			}

			http.Redirect(w, r, "/admin/triggers?flash="+url.QueryEscape(flashMsg), http.StatusSeeOther)
			return
		}

		tmpl := templateHelpers.LoadTemplateFiles("triggers.html", "web/templates/admin/triggers.html")

		err := tmpl.ExecuteTemplate(w, "layout", context)
		if err != nil {
			log.Println("Template error:", err)
			http.Error(w, "Failed to load page", http.StatusInternalServerError)
		}
	}
}

func MatchTicketsHandler(db *sql.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		stats, err := services.RunTicketMatching(db, "manual")
		if err != nil {
			http.Error(w, "Matching failed: "+err.Error(), http.StatusInternalServerError)
			return
		}

		http.Redirect(w, r, "/admin/triggers?flash=Matched "+
			strconv.Itoa(stats.TicketsMatched)+" tickets, "+
			strconv.Itoa(stats.WinnersFound)+" winners.", http.StatusSeeOther)
	}
}

func UpdateMissingPrizesHandler(db *sql.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		err := services.UpdateMissingPrizes(db)
		if err != nil {
			http.Error(w, "Prize update failed: "+err.Error(), http.StatusInternalServerError)
			return
		}

		http.Redirect(w, r, "/admin/triggers?flash=Updated missing prize data.", http.StatusSeeOther)
	}
}

func RunAllHandler(db *sql.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		stats, err := services.RunTicketMatching(db, "manual")
		if err != nil {
			http.Error(w, "Matching failed: "+err.Error(), http.StatusInternalServerError)
			return
		}

		err = services.UpdateMissingPrizes(db)
		if err != nil {
			http.Error(w, "Prize update failed: "+err.Error(), http.StatusInternalServerError)
			return
		}

		http.Redirect(w, r, "/admin/triggers?flash=Matched "+
			strconv.Itoa(stats.TicketsMatched)+" tickets, "+
			strconv.Itoa(stats.WinnersFound)+" winners. Prizes updated.", http.StatusSeeOther)
	}
}