/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

import {MessageBundle} from '@angular/compiler/src/i18n/message_bundle';
import {Xmb} from '@angular/compiler/src/i18n/serializers/xmb';
import {DEFAULT_INTERPOLATION_CONFIG} from '@angular/compiler/src/ml_parser/defaults';
import {HtmlParser} from '@angular/compiler/src/ml_parser/html_parser';

describe('XMB serializer', () => {
  const HTML = `
<p>not translatable</p>
<p i18n>translatable element <b>with placeholders</b> {{ interpolation}}</p>
<!-- i18n -->{ count, plural, =0 {<p>test</p>}}<!-- /i18n -->
<p i18n="m|d">foo</p>
<p i18n="m|d@@i">foo</p>
<p i18n="@@bar">foo</p>
<p i18n="@@baz">{ count, plural, =0 { { sex, select, other {<p>deeply nested</p>}} }}</p>
<p i18n>Test: { count, plural, =0 { { sex, select, other {<p>deeply nested</p>}} } =other {a lot}}</p>
<p i18n>multi
lines</p>
<p i18n>translatable element @if (foo) {with} @else if (bar) {blocks}</p>`;

  const XMB = `<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE messagebundle [
<!ELEMENT messagebundle (msg)*>
<!ATTLIST messagebundle class CDATA #IMPLIED>

<!ELEMENT msg (#PCDATA|ph|source)*>
<!ATTLIST msg id CDATA #IMPLIED>
<!ATTLIST msg seq CDATA #IMPLIED>
<!ATTLIST msg name CDATA #IMPLIED>
<!ATTLIST msg desc CDATA #IMPLIED>
<!ATTLIST msg meaning CDATA #IMPLIED>
<!ATTLIST msg obsolete (obsolete) #IMPLIED>
<!ATTLIST msg xml:space (default|preserve) "default">
<!ATTLIST msg is_hidden CDATA #IMPLIED>

<!ELEMENT source (#PCDATA)>

<!ELEMENT ph (#PCDATA|ex)*>
<!ATTLIST ph name CDATA #REQUIRED>

<!ELEMENT ex (#PCDATA)>
]>
<messagebundle handler="angular">
  <msg id="7056919470098446707"><source>file.ts:3</source>translatable element <ph name="START_BOLD_TEXT"><ex>&lt;b&gt;</ex>&lt;b&gt;</ph>with placeholders<ph name="CLOSE_BOLD_TEXT"><ex>&lt;/b&gt;</ex>&lt;/b&gt;</ph> <ph name="INTERPOLATION"><ex>{{ interpolation}}</ex>{{ interpolation}}</ph></msg>
  <msg id="2981514368455622387"><source>file.ts:4</source>{VAR_PLURAL, plural, =0 {<ph name="START_PARAGRAPH"><ex>&lt;p&gt;</ex>&lt;p&gt;</ph>test<ph name="CLOSE_PARAGRAPH"><ex>&lt;/p&gt;</ex>&lt;/p&gt;</ph>} }</msg>
  <msg id="7999024498831672133" desc="d" meaning="m"><source>file.ts:5</source>foo</msg>
  <msg id="i" desc="d" meaning="m"><source>file.ts:6</source>foo</msg>
  <msg id="bar"><source>file.ts:7</source>foo</msg>
  <msg id="baz"><source>file.ts:8</source>{VAR_PLURAL, plural, =0 {{VAR_SELECT, select, other {<ph name="START_PARAGRAPH"><ex>&lt;p&gt;</ex>&lt;p&gt;</ph>deeply nested<ph name="CLOSE_PARAGRAPH"><ex>&lt;/p&gt;</ex>&lt;/p&gt;</ph>} } } }</msg>
  <msg id="6997386649824869937"><source>file.ts:9</source>Test: <ph name="ICU"><ex>{ count, plural, =0 {...} =other {...}}</ex>{ count, plural, =0 {...} =other {...}}</ph></msg>
  <msg id="5229984852258993423"><source>file.ts:9</source>{VAR_PLURAL, plural, =0 {{VAR_SELECT, select, other {<ph name="START_PARAGRAPH"><ex>&lt;p&gt;</ex>&lt;p&gt;</ph>deeply nested<ph name="CLOSE_PARAGRAPH"><ex>&lt;/p&gt;</ex>&lt;/p&gt;</ph>} } } =other {a lot} }</msg>
  <msg id="2340165783990709777"><source>file.ts:10,11</source>multi
lines</msg>
  <msg id="6618832065070552029"><source>file.ts:12</source>translatable element <ph name="START_BLOCK_IF"><ex>@if</ex>@if</ph>with<ph name="CLOSE_BLOCK_IF"><ex>}</ex>}</ph> <ph name="START_BLOCK_ELSE_IF"><ex>@else if</ex>@else if</ph>blocks<ph name="CLOSE_BLOCK_ELSE_IF"><ex>}</ex>}</ph></msg>
</messagebundle>
`;

  it('should write a valid xmb file', () => {
    expect(toXmb(HTML, 'file.ts')).toEqual(XMB);
    // the locale is not specified in the xmb file
    expect(toXmb(HTML, 'file.ts', 'fr')).toEqual(XMB);
  });

  it('should throw when trying to load an xmb file', () => {
    expect(() => {
      const serializer = new Xmb(/* preservePlaceholders */ true);
      serializer.load(XMB, 'url');
    }).toThrowError(/Unsupported/);
  });
});

function toXmb(html: string, url: string, locale: string | null = null): string {
  const catalog = new MessageBundle(new HtmlParser(), [], {}, locale);
  const serializer = new Xmb(/* preservePlaceholders */ true);

  catalog.updateFromTemplate(html, url, DEFAULT_INTERPOLATION_CONFIG);

  return catalog.write(serializer);
}
