"""Маршрутизация команд бота."""
from telegram.ext import (
    Application, CommandHandler, MessageHandler, CallbackQueryHandler,
    ConversationHandler, filters
)

from .states import BotStates
from .handlers.base import start, help_command, cancel
from .handlers.templates import (
    start_template_creation,
    handle_template_type,
    handle_template_name,
    handle_template_text,
    handle_template_keyboard,
    list_templates
)
from .handlers.posts import (
    newpost,
    choose_channel,
    choose_type,
    choose_format,
    enter_text,
    choose_template_open,
    choose_template_apply,
    choose_template_preview,
    choose_template_navigate,
    choose_template_cancel,
    preview_collect_vars,
    preview_confirm,
    enter_media,
    edit_keyboard,
    confirm_send,
    enter_schedule
)

def register_handlers(app: Application) -> None:
    """Регистрация обработчиков команд."""
    # Базовые команды
    app.add_handler(CommandHandler("start", start))
    app.add_handler(CommandHandler("help", help_command))
    
    # Шаблоны
    template_handler = ConversationHandler(
        entry_points=[CommandHandler("newtemplate", start_template_creation)],
        states={
            BotStates.TPL_TYPE: [
                CallbackQueryHandler(handle_template_type)
            ],
            BotStates.TPL_NAME: [
                MessageHandler(filters.TEXT & ~filters.COMMAND, handle_template_name)
            ],
            BotStates.TPL_TEXT: [
                MessageHandler(filters.TEXT & ~filters.COMMAND, handle_template_text)
            ],
            BotStates.TPL_NEW_KB: [
                MessageHandler(filters.TEXT & ~filters.COMMAND, handle_template_keyboard)
            ]
        },
        fallbacks=[CommandHandler("cancel", cancel)]
    )
    app.add_handler(template_handler)
    
    # Создание поста
    post_handler = ConversationHandler(
        entry_points=[CommandHandler("newpost", newpost)],
        states={
            BotStates.CHOOSE_CHANNEL: [
                CallbackQueryHandler(choose_channel, pattern=r"^channel:")
            ],
            BotStates.CHOOSE_TYPE: [
                CallbackQueryHandler(choose_type, pattern=r"^type:")
            ],
            BotStates.CHOOSE_FORMAT: [
                CallbackQueryHandler(choose_format, pattern=r"^fmt:")
            ],
            BotStates.ENTER_TEXT: [
                MessageHandler(filters.TEXT & ~filters.COMMAND, enter_text),
                CallbackQueryHandler(choose_template_open, pattern=r"^tpl:choose$")
            ],
            BotStates.SELECT_TEMPLATE: [
                CallbackQueryHandler(choose_template_apply, pattern=r"^tpluse:"),
                CallbackQueryHandler(choose_template_preview, pattern=r"^tplprev:"),
                CallbackQueryHandler(choose_template_navigate, pattern=r"^tplpage:"),
                CallbackQueryHandler(choose_template_cancel, pattern=r"^tpl:cancel$")
            ],
            BotStates.PREVIEW_VARS: [
                MessageHandler(filters.TEXT & ~filters.COMMAND, preview_collect_vars)
            ],
            BotStates.PREVIEW_CONFIRM: [
                CallbackQueryHandler(preview_confirm, pattern=r"^pv:(use|edit)$"),
                CallbackQueryHandler(choose_template_cancel, pattern=r"^tpl:cancel$")
            ],
            BotStates.ENTER_MEDIA: [
                MessageHandler(
                    filters.PHOTO | filters.VIDEO | filters.ANIMATION & ~filters.COMMAND,
                    enter_media
                )
            ],
            BotStates.EDIT_KEYBOARD: [
                MessageHandler(filters.TEXT & ~filters.COMMAND, edit_keyboard)
            ],
            BotStates.CONFIRM_SEND: [
                CallbackQueryHandler(confirm_send, pattern=r"^send:")
            ],
            BotStates.ENTER_SCHEDULE: [
                MessageHandler(filters.TEXT & ~filters.COMMAND, enter_schedule)
            ]
        },
        fallbacks=[CommandHandler("cancel", cancel)]
    )
    app.add_handler(post_handler)
    
    # Просмотр шаблонов
    app.add_handler(CommandHandler("templates", list_templates))