package handlers

// ToDo: move SQL into storage layer
import (
	"database/sql"
	"log"
	"net/http"

	templateHelpers "synlotto-website/internal/helpers/template"
	"synlotto-website/internal/models"
)

func NewDrawHandler(db *sql.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		data := models.TemplateData{}
		ctx := templateHelpers.TemplateContext(w, r, data)

		if r.Method == http.MethodPost {
			game := r.FormValue("game_type")
			date := r.FormValue("draw_date")
			machine := r.FormValue("machine")
			ballset := r.FormValue("ball_set")

			_, err := db.Exec(
				`INSERT INTO results_thunderball (game_type, draw_date, machine, ball_set) VALUES (?, ?, ?, ?)`,
				game, date, machine, ballset,
			)
			if err != nil {
				http.Error(w, "Failed to add draw", http.StatusInternalServerError)
				return
			}
			http.Redirect(w, r, "/admin/dashboard", http.StatusSeeOther)
			return
		}

		tmpl := templateHelpers.LoadTemplateFiles("new_draw", "web/templates/admin/draws/new_draw.html")
		_ = tmpl.ExecuteTemplate(w, "layout", ctx)
	}
}

func ModifyDrawHandler(db *sql.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		if r.Method == http.MethodPost {
			id := r.FormValue("id")
			_, err := db.Exec(
				`UPDATE results_thunderball SET game_type=?, draw_date=?, ball_set=?, machine=? WHERE id=?`,
				r.FormValue("game_type"),
				r.FormValue("draw_date"),
				r.FormValue("ball_set"),
				r.FormValue("machine"),
				id,
			)
			if err != nil {
				http.Error(w, "Update failed", http.StatusInternalServerError)
				return
			}
			http.Redirect(w, r, "/admin/dashboard", http.StatusSeeOther)
			return
		}
		// For GET: load draw by ID if needed and render a form/template
	}
}

func DeleteDrawHandler(db *sql.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		if r.Method == http.MethodPost {
			id := r.FormValue("id")
			if _, err := db.Exec(`DELETE FROM results_thunderball WHERE id = ?`, id); err != nil {
				http.Error(w, "Delete failed", http.StatusInternalServerError)
				return
			}
			http.Redirect(w, r, "/admin/dashboard", http.StatusSeeOther)
			return
		}
	}
}

func ListDrawsHandler(db *sql.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		data := models.TemplateData{}
		ctx := templateHelpers.TemplateContext(w, r, data)

		var draws []models.DrawSummary
		rows, err := db.Query(`
			SELECT r.id, r.game_type, r.draw_date, r.ball_set, r.machine,
			       (SELECT COUNT(1) FROM prizes_thunderball p WHERE p.draw_date = r.draw_date) as prize_exists
			FROM results_thunderball r
			ORDER BY r.draw_date DESC
		`)
		if err != nil {
			http.Error(w, "Failed to query draws", http.StatusInternalServerError)
			return
		}
		defer rows.Close()

		for rows.Next() {
			var d models.DrawSummary
			var prizeFlag int
			if err := rows.Scan(&d.Id, &d.GameType, &d.DrawDate, &d.BallSet, &d.Machine, &prizeFlag); err != nil {
				log.Println("⚠️ Draw scan failed:", err)
				continue
			}
			d.PrizeSet = prizeFlag > 0
			draws = append(draws, d)
		}
		ctx["Draws"] = draws

		tmpl := templateHelpers.LoadTemplateFiles("list.html", "web/templates/admin/draws/list.html")
		_ = tmpl.ExecuteTemplate(w, "layout", ctx)
	}
}