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_TARGET_URL


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="Target URL:").grid(row=0, column=0, sticky=tk.W, pady=4)
        self.url_var = tk.StringVar(value=DEFAULT_TARGET_URL)
        ttk.Entry(inputs, textvariable=self.url_var, width=80).grid(row=0, 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)

        # 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):
        url = self.url_var.get().strip()

        if not url:
            messagebox.showerror("Missing field", "Please enter a target URL")
            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(
            target_url=url,
            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 run_gui():
    root = tk.Tk()
    gui = GUI(root)
    root.mainloop()