import * as readline from 'readline';
import chalk from 'chalk';
import type { PermissionContext, PermissionDecision } from './types.js';

/**
 * 在终端中提示用户确认权限
 */
export async function promptPermission(ctx: PermissionContext): Promise<PermissionDecision> {
  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
  });

  return new Promise((resolve) => {
    console.log('');
    console.log(chalk.yellow('⚠️  权限确认'));
    console.log(chalk.cyan('命令: ') + chalk.white(ctx.command));
    console.log(chalk.cyan('目录: ') + chalk.gray(ctx.workdir));

    if (ctx.externalPaths && ctx.externalPaths.length > 0) {
      console.log(chalk.red('⚠️  此命令访问项目目录外的路径:'));
      ctx.externalPaths.forEach(p => {
        console.log(chalk.red('   • ') + chalk.gray(p));
      });
    }

    if (ctx.patterns && ctx.patterns.length > 0) {
      console.log(chalk.gray('匹配模式: ') + ctx.patterns.join(', '));
    }

    console.log('');
    console.log(chalk.white('选择操作:'));
    console.log(chalk.green('  [y] ') + '允许执行');
    console.log(chalk.green('  [Y] ') + '允许执行，并记住此类命令（本次会话）');
    console.log(chalk.red('  [n] ') + '拒绝执行');
    console.log(chalk.red('  [N] ') + '拒绝执行，并记住此类命令（本次会话）');
    console.log('');

    rl.question(chalk.yellow('请选择 [y/Y/n/N]: '), (answer) => {
      rl.close();

      const choice = answer.trim();

      switch (choice) {
        case 'y':
          resolve({ allow: true, remember: false });
          break;
        case 'Y':
          resolve({ allow: true, remember: true });
          break;
        case 'N':
          resolve({ allow: false, remember: true });
          break;
        case 'n':
        default:
          resolve({ allow: false, remember: false });
          break;
      }
    });
  });
}

/**
 * 显示权限被拒绝的消息
 */
export function showPermissionDenied(command: string, reason: string): void {
  console.log('');
  console.log(chalk.red('🚫 权限被拒绝'));
  console.log(chalk.cyan('命令: ') + chalk.white(command));
  console.log(chalk.cyan('原因: ') + chalk.gray(reason));
  console.log('');
}

/**
 * 显示权限允许的消息
 */
export function showPermissionAllowed(command: string): void {
  console.log(chalk.green('✓ ') + chalk.gray(`执行: ${command}`));
}