"""
Filename: terminal.py
Description: Terminal window for FLARES

Author: Tyler de Zeeuw
License: GPL-3.0
"""

from PySide6.QtWidgets import QWidget, QVBoxLayout, QTextEdit, QLineEdit
from PySide6.QtCore import Qt

from src.shared.shareddata import API_URL, API_URL_SECONDARY, APP_NAME, CURRENT_VERSION, PLATFORM_NAME
from src.window.about import AboutWindow
from updater import LocalPendingUpdateCheckThread, UpdateManager


class TerminalWindow(QWidget):
    def __init__(self, parent=None):
        super().__init__(parent, Qt.WindowType.Window)
        self.setWindowTitle(f"Terminal - {APP_NAME.upper()}")
        self.resize(320, 180)
        self.output_area = QTextEdit()
        self.output_area.setReadOnly(True)

        self.input_line = QLineEdit()
        self.input_line.returnPressed.connect(self.handle_command)

        layout = QVBoxLayout()
        layout.addWidget(self.output_area)
        layout.addWidget(self.input_line)
        self.setLayout(layout)

        self.commands = {
            "hello": self.cmd_hello,
            "help": self.cmd_help,
            "version": self.cmd_version,
            "about": self.cmd_about,
            "update": self.cmd_update,
        }

        self.output_area.append(f"Welcome to {APP_NAME.upper()}. You are running version {CURRENT_VERSION}.")
        self.output_area.append("Type 'help' for a list of available commands.\n")

        self.input_line.setFocus()


    def handle_command(self):
        command_text = self.input_line.text()
        self.input_line.clear()

        self.output_area.append(f"> {command_text}")
        parts = command_text.strip().split()
        if not parts:
            return

        command_name = parts[0]
        args = parts[1:]

        func = self.commands.get(command_name)
        if func:
            try:
                result = func(*args)
                if result:
                    self.output_area.append(str(result))
            except Exception as e:
                self.output_area.append(f"[Error] {e}")
        else:
            self.output_area.append(f"[Unknown command] '{command_name}'")


    def cmd_hello(self, *args):
        return "Hello from the terminal!"

    def cmd_help(self, *args):
        return f"Available commands: {', '.join(self.commands.keys())}"
    
    def cmd_version(self, *args):
        return f"{APP_NAME.upper()} is running version {CURRENT_VERSION}."
    
    def cmd_about(self, *args):
        self.about = AboutWindow(self)
        self.about.show()

    def cmd_update(self, *args):
        main_win = self.parent()
        if main_win is None:
            return "[Error] Main window context not found."
        
        self.updater = UpdateManager(
            main_window=main_win,
            api_url=API_URL,
            api_url_sec=API_URL_SECONDARY,
            current_version=CURRENT_VERSION,
            platform_name=PLATFORM_NAME,
            platform_suffix="-" + PLATFORM_NAME,
            app_name=APP_NAME
        )
        self.output_area.append("Checking for updates...")
        
        self.updater.manual_check_for_updates()
        return "See status bar for update information."