/**
 * Copyright (c) Microsoft Corporation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { z } from 'zod';

import { defineTabTool } from './tool.js';
import { elementSchema } from './snapshot.js';
import { generateLocator } from './utils.js';
import * as javascript from '../javascript.js';

const pressKey = defineTabTool({
  capability: 'core',

  schema: {
    name: 'browser_press_key',
    title: 'Press a key',
    description: 'Press a key on the keyboard',
    inputSchema: z.object({
      key: z.string().describe('Name of the key to press or a character to generate, such as `ArrowLeft` or `a`'),
    }),
    type: 'destructive',
  },

  handle: async (tab, params) => {
    const code = [
      `// Press ${params.key}`,
      `await page.keyboard.press('${params.key}');`,
    ];

    const action = () => tab.page.keyboard.press(params.key);

    return {
      code,
      action,
      captureSnapshot: true,
      waitForNetwork: true
    };
  },
});

const typeSchema = elementSchema.extend({
  text: z.string().describe('Text to type into the element'),
  submit: z.boolean().optional().describe('Whether to submit entered text (press Enter after)'),
  slowly: z.boolean().optional().describe('Whether to type one character at a time. Useful for triggering key handlers in the page. By default entire text is filled in at once.'),
});

const type = defineTabTool({
  capability: 'core',
  schema: {
    name: 'browser_type',
    title: 'Type text',
    description: 'Type text into editable element',
    inputSchema: typeSchema,
    type: 'destructive',
  },

  handle: async (tab, params) => {
    const locator = await tab.refLocator(params);

    const code: string[] = [];
    const steps: (() => Promise<void>)[] = [];

    if (params.slowly) {
      code.push(`// Press "${params.text}" sequentially into "${params.element}"`);
      code.push(`await page.${await generateLocator(locator)}.pressSequentially(${javascript.quote(params.text)});`);
      steps.push(() => locator.pressSequentially(params.text));
    } else {
      code.push(`// Fill "${params.text}" into "${params.element}"`);
      code.push(`await page.${await generateLocator(locator)}.fill(${javascript.quote(params.text)});`);
      steps.push(() => locator.fill(params.text));
    }

    if (params.submit) {
      code.push(`// Submit text`);
      code.push(`await page.${await generateLocator(locator)}.press('Enter');`);
      steps.push(() => locator.press('Enter'));
    }

    return {
      code,
      action: () => steps.reduce((acc, step) => acc.then(step), Promise.resolve()),
      captureSnapshot: true,
      waitForNetwork: true,
    };
  },
});

export default [
  pressKey,
  type,
];