import os
import threading
import queue
import webbrowser
from pathlib import Path
import tkinter as tk
from tkinter import ttk, scrolledtext, messagebox, filedialog

from bot import BotRunner
from config import DEFAULT_CREDENTIALS_FILE, save_credentials


LOG_POLL_MS = 200


class GUI:
    def __init__(self, root: tk.Tk):
        self.root = root
        root.title("ADM PURCHASING TOOLS")
        root.geometry("760x620")

        self.log_queue = queue.Queue()
        self.stop_event = threading.Event()
        self.worker_thread = None

        frm = ttk.Frame(root, padding=12)
        frm.pack(fill=tk.BOTH, expand=True)

        # Inputs
        inputs = ttk.Frame(frm)
        inputs.pack(fill=tk.X)

        ttk.Label(inputs, text="Username:").grid(row=0, column=0, sticky=tk.W, pady=4)
        self.username_var = tk.StringVar()
        ttk.Entry(inputs, textvariable=self.username_var, width=40).grid(row=0, column=1, sticky=tk.W)

        ttk.Label(inputs, text="Password:").grid(row=1, column=0, sticky=tk.W, pady=4)
        self.password_var = tk.StringVar()
        ttk.Entry(inputs, textvariable=self.password_var, width=40, show="*").grid(row=1, column=1, sticky=tk.W)

        ttk.Label(inputs, text="Studio URL or Name:").grid(row=2, column=0, sticky=tk.W, pady=4)
        self.studio_var = tk.StringVar()
        ttk.Entry(inputs, textvariable=self.studio_var, width=60).grid(row=2, column=1, sticky=tk.W)

        ttk.Label(inputs, text="Minimum Price:").grid(row=3, column=0, sticky=tk.W, pady=4)
        self.min_price_var = tk.StringVar(value="6.00")
        ttk.Entry(inputs, textvariable=self.min_price_var, width=12).grid(row=3, column=1, sticky=tk.W)

        # Buttons
        btns = ttk.Frame(frm, padding=(0, 8, 0, 8))
        btns.pack(fill=tk.X)

        self.start_btn = ttk.Button(btns, text="Start", command=self.start)
        self.start_btn.pack(side=tk.LEFT, padx=6)
        self.stop_btn = ttk.Button(btns, text="Stop", command=self.stop, state=tk.DISABLED)
        self.stop_btn.pack(side=tk.LEFT, padx=6)
        ttk.Button(btns, text="Open Export Folder", command=self.open_exports).pack(side=tk.LEFT, padx=6)
        ttk.Button(btns, text="Save Credentials", command=self.save_creds).pack(side=tk.LEFT, padx=6)

        # Status / Progress
        status_frame = ttk.Frame(frm)
        status_frame.pack(fill=tk.X)
        self.status_var = tk.StringVar(value="Ready")
        ttk.Label(status_frame, textvariable=self.status_var).pack(side=tk.LEFT)
        self.progress = ttk.Progressbar(status_frame, mode="indeterminate")
        self.progress.pack(fill=tk.X, padx=8, pady=6)

        # Log panel
        ttk.Label(frm, text="Logs:").pack(anchor=tk.W)
        self.log_widget = scrolledtext.ScrolledText(frm, height=20, state=tk.DISABLED)
        self.log_widget.pack(fill=tk.BOTH, expand=True)

        # Poll logs
        root.after(LOG_POLL_MS, self._poll_log)

    def append_log(self, text: str):
        self.log_widget.configure(state=tk.NORMAL)
        self.log_widget.insert(tk.END, text + "\n")
        self.log_widget.see(tk.END)
        self.log_widget.configure(state=tk.DISABLED)

    def _poll_log(self):
        try:
            while True:
                item = self.log_queue.get_nowait()
                if isinstance(item, dict) and item.get("type") == "status":
                    self.status_var.set(item.get("text", ""))
                else:
                    self.append_log(str(item))
        except queue.Empty:
            pass
        finally:
            self.root.after(LOG_POLL_MS, self._poll_log)

    def start(self):
        username = self.username_var.get().strip()
        password = self.password_var.get().strip()
        studio = self.studio_var.get().strip()
        try:
            min_price = float(self.min_price_var.get().strip())
        except Exception:
            messagebox.showerror("Invalid input", "Minimum price must be a number")
            return

        if not username or not password or not studio:
            messagebox.showerror("Missing fields", "Please enter username, password and studio URL/name")
            return

        self.stop_event.clear()
        self.start_btn.config(state=tk.DISABLED)
        self.stop_btn.config(state=tk.NORMAL)
        self.progress.start(10)
        self.status_var.set("Starting...")

        runner = BotRunner(
            username=username,
            password=password,
            studio_input=studio,
            min_price=min_price,
            log_queue=self.log_queue,
            stop_event=self.stop_event,
        )

        def worker():
            try:
                runner.run()
                self.log_queue.put({"type": "status", "text": "Completed"})
            except Exception as e:
                self.log_queue.put(f"Error: {e}")
            finally:
                self.progress.stop()
                self.start_btn.config(state=tk.NORMAL)
                self.stop_btn.config(state=tk.DISABLED)

        self.worker_thread = threading.Thread(target=worker, daemon=True)
        self.worker_thread.start()

    def stop(self):
        if messagebox.askyesno("Stop", "Stop the running job?"):
            self.stop_event.set()
            self.status_var.set("Stopping...")

    def open_exports(self):
        p = Path.cwd()
        webbrowser.open(p.as_uri())

    def save_creds(self):
        u = self.username_var.get().strip()
        p = self.password_var.get().strip()
        if not u or not p:
            messagebox.showerror("Error", "Provide both username and password to save")
            return
        save_credentials(u, p, DEFAULT_CREDENTIALS_FILE)
        messagebox.showinfo("Saved", f"Credentials saved to {DEFAULT_CREDENTIALS_FILE}")


def run_gui():
    root = tk.Tk()
    gui = GUI(root)
    root.mainloop()