import tkinter as tk
from tkinter import messagebox
from database import connect

class KasirPage(tk.Frame):
    def __init__(self, parent, controller):
        super().__init__(parent)
        self.controller = controller

        # Header
        top = tk.Frame(self, bg="#ddd")
        top.pack(fill="x")
        tk.Button(top, text="Logout", command=lambda: controller.show_frame("LoginPage")).pack(side="right", padx=10, pady=5)
        tk.Label(top, text="KASIR - PEMBAYARAN", font=("Arial", 16, "bold"), bg="#ddd").pack(side="left", padx=10)

        # List
        tk.Label(self, text="Tagihan Belum Bayar (Status: Served):", font=("Arial", 11)).pack(pady=10)
        self.order_list = tk.Listbox(self, width=80, height=15)
        self.order_list.pack(pady=5)

        tk.Button(self, text="Refresh Data", command=self.update_data).pack(pady=5)
        tk.Button(self, text="💰 PROSES BAYAR & LUNAS", bg="#81C784", height=2, command=self.bayar).pack(fill="x", padx=20, pady=20)

    def update_data(self):
        self.order_list.delete(0, tk.END)
        self.data_orders = []
        
        db = connect()
        cur = db.cursor()
        # Kasir melihat yang sudah diantar (Served) tapi belum bayar
        cur.execute("SELECT id, nama_pelanggan, meja_id, total FROM transaksi WHERE status='Served'")
        self.data_orders = cur.fetchall()
        db.close()

        for item in self.data_orders:
            self.order_list.insert(tk.END, f"ID Transaksi: {item[0]} | Meja {item[2]} | {item[1]} | Tagihan: Rp {int(item[3]):,}")

    def bayar(self):
        idx = self.order_list.curselection()
        if not idx:
            messagebox.showwarning("Pilih", "Pilih tagihan dulu!")
            return
        
        selected = self.data_orders[idx[0]]
        trans_id = selected[0]
        total = selected[3]

        # Konfirmasi
        if not messagebox.askyesno("Konfirmasi", f"Terima pembayaran sebesar Rp {int(total):,}?"):
            return

        db = connect()
        cur = db.cursor()
        
        # Update status jadi 'Paid'
        cur.execute("UPDATE transaksi SET status='Paid', metode_pembayaran='CASH' WHERE id=?", (trans_id,))
        
        db.commit()
        db.close()

        messagebox.showinfo("Lunas", "Transaksi Selesai & Lunas!")
        self.update_data()