import * as fs from 'fs/promises';
import * as path from 'path';
import type { ToolResult } from '../../types/index.js';
import type { ToolWithMetadata } from '../types.js';
import { loadDescription } from '../load_description.js';
import { getPermissionManager } from '../../permission/index.js';

export const createDirectoryTool: ToolWithMetadata = {
  name: 'create_directory',
  description: loadDescription('create_directory'),
  metadata: {
    name: 'create_directory',
    category: 'filesystem',
    description: '创建目录',
    keywords: ['create', 'directory', 'mkdir', 'folder', 'new', '创建', '目录', '文件夹', '新建'],
    deferLoading: true,
  },
  parameters: {
    path: {
      type: 'string',
      description: '要创建的目录路径',
      required: true,
    },
  },
  execute: async (params: Record<string, unknown>): Promise<ToolResult> => {
    const dirPath = params.path as string;
    const cwd = process.cwd();

    const absolutePath = path.isAbsolute(dirPath)
      ? dirPath
      : path.join(cwd, dirPath);

    // 权限检查
    const permissionManager = getPermissionManager();
    const permResult = await permissionManager.checkFilePermission({
      operation: 'mkdir',
      path: absolutePath,
      workdir: cwd,
    });

    if (!permResult.allowed) {
      if (permResult.needsConfirmation) {
        return {
          success: false,
          output: '',
          error: `需要用户确认: 创建目录 ${absolutePath}\n原因: ${permResult.reason || '需要权限确认'}`,
        };
      }
      return {
        success: false,
        output: '',
        error: `权限被拒绝: ${permResult.reason || '不允许创建此目录'}`,
      };
    }

    try {
      // 检查目录是否已存在
      try {
        const stats = await fs.stat(absolutePath);
        if (stats.isDirectory()) {
          return {
            success: true,
            output: `目录已存在: ${absolutePath}`,
          };
        } else {
          return {
            success: false,
            output: '',
            error: `路径已存在且不是目录: ${absolutePath}`,
          };
        }
      } catch {
        // 目录不存在，继续创建
      }

      // 创建目录（递归创建父目录）
      await fs.mkdir(absolutePath, { recursive: true });

      return {
        success: true,
        output: `已创建目录: ${absolutePath}`,
      };
    } catch (error) {
      return {
        success: false,
        output: '',
        error: error instanceof Error ? error.message : String(error),
      };
    }
  },
};