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

class KasirPage:
    def __init__(self, parent, controller):
        self.parent = parent
        self.frame = tk.Frame(parent)
        self.frame.pack(fill="both", expand=True)

        tk.Label(self.frame, text="KASIR - PEMBAYARAN", font=("Arial", 18, "bold")).pack(pady=10)
        tk.Button(self.frame, text="Logout", bg="#f9e79f", command=self.logout).pack(pady=5)
        tk.Button(self.frame, text="Refresh", command=self.load_tagihan).pack()

        tk.Label(self.frame, text="Daftar Tagihan (Status: Disajikan):", font=("Arial", 12)).pack(pady=5)
        self.listbox = tk.Listbox(self.frame, width=60, height=10)
        self.listbox.pack(pady=5)

        tk.Button(self.frame, text="Proses Pembayaran", bg="#d1e7dd", command=self.bayar).pack(pady=5)

        self.transaksi_data = [] 
        self.load_tagihan()

    def load_tagihan(self):
        self.listbox.delete(0, tk.END)
        self.transaksi_data = []
        
        db = connect()
        cur = db.cursor()
        # Kasir hanya melihat yang sudah disajikan waiter
        cur.execute("SELECT id, meja_id, total FROM transaksi WHERE status='Disajikan'")
        rows = cur.fetchall()
        db.close()

        for row in rows:
            t_id, meja, total = row
            self.listbox.insert(tk.END, f"Meja {meja} - ID Transaksi: {t_id} - Total: Rp {total:,.0f}")
            self.transaksi_data.append(row)

    def bayar(self):
        idx = self.listbox.curselection()
        if not idx:
            messagebox.showwarning("Pilih", "Pilih tagihan yang akan dibayar!")
            return

        t_id, meja, total = self.transaksi_data[idx[0]]

        # Konfirmasi pembayaran
        confirm = messagebox.askyesno("Konfirmasi", f"Bayar tagihan Meja {meja} sebesar Rp {total:,.0f}?")
        if confirm:
            db = connect()
            cur = db.cursor()
            # Ubah status menjadi Lunas
            cur.execute("UPDATE transaksi SET status='Lunas' WHERE id=?", (t_id,))
            db.commit()
            db.close()
            
            messagebox.showinfo("Sukses", "Pembayaran Berhasil! Struk dicetak.")
            self.load_tagihan()

    def logout(self):
        self.frame.destroy()
        from main import LoginScreen
        LoginScreen(self.parent)