/**
 * @license
 * Copyright Google Inc. 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 {CompileDirectiveMetadata, CompileTemplateMetadata, CompileTypeMetadata} from '@angular/compiler/src/compile_metadata';
import {CompilerConfig} from '@angular/compiler/src/config';
import {DirectiveNormalizer} from '@angular/compiler/src/directive_normalizer';
import {Lexer} from '@angular/compiler/src/expression_parser/lexer';
import {Parser} from '@angular/compiler/src/expression_parser/parser';
import {HtmlParser} from '@angular/compiler/src/html_parser';
import {NormalizedComponentWithViewDirectives, OfflineCompiler, SourceModule} from '@angular/compiler/src/offline_compiler';
import {OutputEmitter} from '@angular/compiler/src/output/abstract_emitter';
import {ImportGenerator} from '@angular/compiler/src/output/path_util';
import {StyleCompiler} from '@angular/compiler/src/style_compiler';
import {TemplateParser} from '@angular/compiler/src/template_parser';
import {createOfflineCompileUrlResolver} from '@angular/compiler/src/url_resolver';
import {MODULE_SUFFIX} from '@angular/compiler/src/util';
import {ViewCompiler} from '@angular/compiler/src/view_compiler/view_compiler';
import {XHR} from '@angular/compiler/src/xhr';

import {Console} from '../core_private';
import {IS_DART, isPresent, print} from '../src/facade/lang';
import {MockSchemaRegistry} from '../testing/schema_registry_mock';


export class CompA { user: string; }

var THIS_MODULE_PATH = `asset:@angular/lib/compiler/test`;
var THIS_MODULE_URL = `${THIS_MODULE_PATH}/offline_compiler_util${MODULE_SUFFIX}`;

export var compAMetadata = CompileDirectiveMetadata.create({
  isComponent: true,
  selector: 'comp-a',
  type: new CompileTypeMetadata(
      {name: 'CompA', moduleUrl: THIS_MODULE_URL, runtime: CompA, diDeps: []}),
  template: new CompileTemplateMetadata({
    templateUrl: './offline_compiler_compa.html',
    styles: ['.redStyle { color: red; }'],
    styleUrls: ['./offline_compiler_compa.css']
  })
});

function _createOfflineCompiler(xhr: XHR, emitter: OutputEmitter): OfflineCompiler {
  var urlResolver = createOfflineCompileUrlResolver();
  var htmlParser = new HtmlParser();
  var config = new CompilerConfig({genDebugInfo: true, useJit: true});
  var normalizer = new DirectiveNormalizer(xhr, urlResolver, htmlParser, config);
  return new OfflineCompiler(
      normalizer,
      new TemplateParser(
          new Parser(new Lexer()), new MockSchemaRegistry({}, {}), htmlParser, new Console(), []),
      new StyleCompiler(urlResolver), new ViewCompiler(config), emitter);
}

export function compileComp(
    emitter: OutputEmitter, comp: CompileDirectiveMetadata): Promise<string> {
  var xhr = new MockXhr();
  xhr.setResult(`${THIS_MODULE_PATH}/offline_compiler_compa.html`, '');
  xhr.setResult(`${THIS_MODULE_PATH}/offline_compiler_compa.css`, '');
  var compiler = _createOfflineCompiler(xhr, emitter);
  var result = compiler.normalizeDirectiveMetadata(comp).then((normComp) => {
    return compiler
        .compileTemplates([new NormalizedComponentWithViewDirectives(normComp, [], [])])[0]
        .source;
  });
  return result;
}

export class SimpleJsImportGenerator implements ImportGenerator {
  getImportPath(moduleUrlStr: string, importedUrlStr: string): string {
    var importedAssetUrl = ImportGenerator.parseAssetUrl(importedUrlStr);
    if (isPresent(importedAssetUrl)) {
      return `${importedAssetUrl.packageName}/${importedAssetUrl.modulePath}`;
    } else {
      return importedUrlStr;
    }
  }
}

class MockXhr implements XHR {
  results: {[key: string]: string} = {};
  setResult(url: string, content: string) { this.results[url] = content; }

  get(url: string): Promise<string> {
    if (url in this.results) {
      return Promise.resolve(this.results[url]);
    }
    return Promise.reject<any>(`Unknown url ${url}`);
  }
}