import { defineConfig } from 'wormajs';
import { rename } from 'wormajs/plugin';

export default defineConfig({
  generator: [
    {
      // ...
      plugins: [
        // Convert underscores in URLs to camelCase
        rename({ style: 'camelCase' }),
      ],
    },
  ],
});

interface RenameConfig {
  /**
   * Scope, default 'url'
   * - url: endpoint path
   * - params: query params
   * - pathParams: path params
   * - data: request body
   * - response: response data
   * - refName: referenced type name
   */
  scope?: 'url' | 'params' | 'pathParams' | 'data' | 'response' | 'refName';

  /**
   * Endpoint path filter (exact/contains match on apiDescriptor.url, regex, or custom function).
   * When path doesn't match, this config is skipped and the API is returned unchanged.
   */
  path?: string | RegExp | ((url: string) => boolean);

  /**
   * Match rule; converts everything when omitted
   * - string: contains this string
   * - RegExp: matches this regex
   * - function: custom match function
   */
  match?: string | RegExp | ((key: string) => boolean);

  /**
   * Naming style
   * - camelCase: lower camel case (userName)
   * - PascalCase: upper camel case (UserName)
   * - kebabCase: kebab case (user-name)
   * - snakeCase: snake case (user_name)
   */
  style?: 'camelCase' | 'PascalCase' | 'kebabCase' | 'snakeCase';

  /**
   * Custom transform function, runs before the style conversion
   */
  transform?: (apiDescriptor: any, value: string) => string;
}

function rename(config: RenameConfig | RenameConfig[]): ApiPlugin;

// Before: /api/get_data/{item_id}
// After:  /api/getData/{itemId}
rename([
  {
    scope: 'url',
    style: 'camelCase',
    match: /_/, // only convert parts containing underscores
  },
  {
    scope: 'pathParams',
    style: 'camelCase',
  },
]);

rename({
  scope: 'params',
  match: key => key.length > 5,
  style: 'camelCase',
});

rename({
  scope: 'data',
  match: ['user_info', 'order_list'],
  transform: (api, value) => {
    const map = {
      user_info: 'user',
      order_list: 'orders',
    };
    return map[value] || value;
  },
});