import type { CallTemplateFunctionArgs, Context, PluginDefinition } from '@yaakapp/api';
import { JSONPath } from 'jsonpath-plus';

export const plugin: PluginDefinition = {
  templateFunctions: [
    {
      name: 'json.jsonpath',
      description: 'Filter JSON-formatted text using JSONPath syntax',
      args: [
        {
          type: 'text',
          name: 'input',
          label: 'Input',
          multiLine: true,
          placeholder: '{ "foo": "bar" }',
        },
        { type: 'text', name: 'query', label: 'Query', placeholder: '$..foo' },
        { type: 'checkbox', name: 'formatted', label: 'Format Output' },
      ],
      async onRender(_ctx: Context, args: CallTemplateFunctionArgs): Promise<string | null> {
        try {
          const parsed = JSON.parse(String(args.values.input));
          const query = String(args.values.query ?? '$').trim();
          let filtered = JSONPath({ path: query, json: parsed });
          if (Array.isArray(filtered)) {
            filtered = filtered[0];
          }
          if (typeof filtered === 'string') {
            return filtered;
          }

          if (args.values.formatted) {
            return JSON.stringify(filtered, null, 2);
          } else {
            return JSON.stringify(filtered);
          }
        } catch {
          return null;
        }
      },
    },
    {
      name: 'json.escape',
      description: 'Escape a JSON string, useful when using the output in JSON values',
      args: [
        {
          type: 'text',
          name: 'input',
          label: 'Input',
          multiLine: true,
          placeholder: 'Hello "World"',
        },
      ],
      async onRender(_ctx: Context, args: CallTemplateFunctionArgs): Promise<string | null> {
        const input = String(args.values.input ?? '');
        return input.replace(/\\/g, '\\\\').replace(/"/g, '\\"');
      },
    },
    {
      name: 'json.minify',
      description: 'Remove unnecessary whitespace from a valid JSON string.',
      args: [
        {
          type: 'editor',
          language: 'json',
          name: 'input',
          label: 'Input',
          placeholder: '{ "foo": "bar" }',
        },
      ],
      async onRender(_ctx: Context, args: CallTemplateFunctionArgs): Promise<string | null> {
        const input = String(args.values.input ?? '');
        try {
          return JSON.stringify(JSON.parse(input));
        } catch {
          return input;
        }
      },
    },
  ],
};