import { getWelcomeMessage , getHelpMessage, getAboutMessage, getContactMessage} from "../utils/messageUtils";
import { getMainMenuKeyboard, getLoggedInMenuKeyboard, getHistoryKeyboard } from "../utils/keyboardUtils";
import { BotContext } from "../types/botTypes";
import { AuthService } from '../services/auth';
import { PurchaseTrackingService, PurchaseState } from '../services/PurchaseTrackingService';
import { createLogger } from '../../utils/logger';
import { messageReplyHandler } from "../utils/handlerUtils";
import { handleLanguageSelection } from "./languageHandlers";
import { messageManager } from "../utils/messageManager";
// import { logger } from "../../utils/logger";

const logger = createLogger('CommandHandlers');
const authService = AuthService.getInstance();
const purchaseTrackingService = PurchaseTrackingService.getInstance();

export const setupCommandHandlers = (bot: any) => {
  // /start command handler
  bot.start(messageReplyHandler(handleStartCommand));
  
  // Other commands using the new messageReplyHandler
  bot.command('help', messageReplyHandler(handleHelpCommand));
  bot.command('about', messageReplyHandler(handleAboutCommand));
  bot.command('contact', messageReplyHandler(handleContactCommand));
  bot.command('balance', messageReplyHandler(handleBalanceCommand));
  bot.command('history', messageReplyHandler(handleHistoryCommand));
  
  // Add language command handler
  bot.command('change_language', messageReplyHandler(handleLanguageCommand));
};

const handleStartCommand = (ctx: BotContext) => {
  const name = ctx.from?.first_name || "عزيزي المستخدم";
  const telegramId = ctx.from?.id;
  
  if (telegramId && authService.isUserLoggedIn(telegramId,ctx)) {
    return {
      message: messageManager.getMessage('start_welcome_back').replace('{name}', name),
      options: getLoggedInMenuKeyboard()
    };
  } else {
    return {
      message: messageManager.getMessage('start_welcome_new').replace('{name}', name),
      options: getMainMenuKeyboard()
    };
  }
};

const handleAboutCommand = (ctx: BotContext) => {
  const botData = ctx.botData;
  
  return {
    message: [
      messageManager.getMessage('about_title'),
      messageManager.getMessage('about_bot_name').replace('{bot_name}', botData?.name || 'بوت الأرقام الافتراضية'),
      messageManager.getMessage('about_version').replace('{version}', botData?.version || '1.0.0'),
      messageManager.getMessage('about_currency').replace('{currency}', botData?.currency || 'USD'),
      '',
      messageManager.getMessage('about_features'),
      '',
      messageManager.getMessage('about_copyright')
    ].join('\n'),
    options: { parse_mode: 'HTML' }
  };
};


const handleHelpCommand = (ctx: BotContext) => {
  return {
    message: getHelpMessage(),
    options: { parse_mode: 'HTML' }
  };
};

const handleContactCommand = (ctx: BotContext) => {
  return {
    message: getContactMessage(),
    options: { parse_mode: 'HTML' }
  };
};

const handleBalanceCommand = async (ctx: BotContext) => {
  const telegramId = ctx.from?.id;
  
  if (!telegramId) {
    return {
      message: messageManager.getMessage('error_user_not_found'),
      options: {}
    };
  }
  
  const user = await authService.getUserByTelegramId(telegramId,ctx);
  
  if (!user) {
    return {
      message: messageManager.getMessage('balance_auth_required'),
      options: getMainMenuKeyboard()
    };
  }
  
  return {
    message: [
      messageManager.getMessage('balance_title'),
      '',
      messageManager.getMessage('balance_current').replace('{balance}', (user.balance || 0).toString()),
      messageManager.getMessage('balance_last_updated').replace('{update_time}', new Date().toLocaleString('ar-SA'))
    ].join('\n'),
    options: { 
      ...getLoggedInMenuKeyboard(),
      parse_mode: 'HTML'
    }
  };
};

const handleHistoryCommand = async (ctx: BotContext) => {
  const telegramId = ctx.from?.id;
  
  if (!telegramId) {
    return {
      message: messageManager.getMessage('error_user_not_found'),
      options: {}
    };
  }
  
  if (!authService.isUserLoggedIn(telegramId,ctx)) {
    return {
      message: messageManager.getMessage('history_auth_required'),
      options: getMainMenuKeyboard()
    };
  }
  
  return {
    message: [
      messageManager.getMessage('history_title'),
      '',
      messageManager.getMessage('history_description')
    ].join('\n'),
    options: {
      ...getHistoryKeyboard(),
      parse_mode: 'HTML'
    }
  };
};


const handleLanguageCommand = (ctx: BotContext) => {
  return handleLanguageSelection(ctx);
};