/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
'use strict';

import {MarkedString, CompletionItemKind, CompletionItem, DocumentSelector} from 'vscode';
import {IJSONContribution, ISuggestionsCollector} from './jsonContributions';
import {XHRRequest} from 'request-light';
import {Location} from 'jsonc-parser';

import * as nls from 'vscode-nls';
const localize = nls.loadMessageBundle();

export class BowerJSONContribution implements IJSONContribution {

	private topRanked = ['twitter','bootstrap','angular-1.1.6','angular-latest','angulerjs','d3','myjquery','jq','abcdef1234567890','jQuery','jquery-1.11.1','jquery',
		'sushi-vanilla-x-data','font-awsome','Font-Awesome','font-awesome','fontawesome','html5-boilerplate','impress.js','homebrew',
		'backbone','moment1','momentjs','moment','linux','animate.css','animate-css','reveal.js','jquery-file-upload','blueimp-file-upload','threejs','express','chosen',
		'normalize-css','normalize.css','semantic','semantic-ui','Semantic-UI','modernizr','underscore','underscore1',
		'material-design-icons','ionic','chartjs','Chart.js','nnnick-chartjs','select2-ng','select2-dist','phantom','skrollr','scrollr','less.js','leancss','parser-lib',
		'hui','bootstrap-languages','async','gulp','jquery-pjax','coffeescript','hammer.js','ace','leaflet','jquery-mobile','sweetalert','typeahead.js','soup','typehead.js',
		'sails','codeigniter2'];

	public constructor(private xhr: XHRRequest) {
	}

	public getDocumentSelector(): DocumentSelector {
		return  [{ language: 'json', pattern: '**/bower.json' }, { language: 'json', pattern: '**/.bower.json' }];
	}

	public collectDefaultSuggestions(resource: string, collector: ISuggestionsCollector): Thenable<any> {
		let defaultValue = {
			'name': '{{name}}',
			'description': '{{description}}',
			'authors': [ '{{author}}' ],
			'version': '{{1.0.0}}',
			'main': '{{pathToMain}}',
			'dependencies': {}
		};
		let proposal = new CompletionItem(localize('json.bower.default', 'Default bower.json'));
		proposal.kind = CompletionItemKind.Class;
		proposal.insertText = JSON.stringify(defaultValue, null, '\t');
		collector.add(proposal);
		return Promise.resolve(null);
	}

	public collectPropertySuggestions(resource: string, location: Location, currentWord: string, addValue: boolean, isLast:boolean, collector: ISuggestionsCollector) : Thenable<any> {
		if ((location.matches(['dependencies']) || location.matches(['devDependencies']))) {
			if (currentWord.length > 0) {
				let queryUrl = 'https://bower.herokuapp.com/packages/search/' + encodeURIComponent(currentWord);

				return this.xhr({
					url : queryUrl
				}).then((success) => {
					if (success.status === 200) {
						try {
							let obj = JSON.parse(success.responseText);
							if (Array.isArray(obj)) {
								let results = <{name:string; description:string;}[]> obj;
								for (let i = 0; i < results.length; i++) {
									let name = results[i].name;
									let description = results[i].description || '';
									let insertText = JSON.stringify(name);
									if (addValue) {
										insertText += ': "{{latest}}"';
										if (!isLast) {
											insertText += ',';
										}
									}
									let proposal = new CompletionItem(name);
									proposal.kind = CompletionItemKind.Property;
									proposal.insertText = insertText;
									proposal.documentation = description;
									collector.add(proposal);
								}
								collector.setAsIncomplete();
							}
						} catch (e) {
							// ignore
						}
					} else {
						collector.error(localize('json.bower.error.repoaccess', 'Request to the bower repository failed: {0}', success.responseText));
						return 0;
					}
				}, (error) => {
					collector.error(localize('json.bower.error.repoaccess', 'Request to the bower repository failed: {0}', error.responseText));
					return 0;
				});
			} else {
				this.topRanked.forEach((name) => {
					let insertText = JSON.stringify(name);
					if (addValue) {
						insertText += ': "{{latest}}"';
						if (!isLast) {
							insertText += ',';
						}
					}

					let proposal = new CompletionItem(name);
					proposal.kind = CompletionItemKind.Property;
					proposal.insertText = insertText;
					proposal.documentation = '';
					collector.add(proposal);
				});
				collector.setAsIncomplete();
				return Promise.resolve(null);
			}
		}
		return null;
	}

	public collectValueSuggestions(resource: string, location: Location, collector: ISuggestionsCollector): Thenable<any> {
		// not implemented. Could be do done calling the bower command. Waiting for web API: https://github.com/bower/registry/issues/26
		let proposal = new CompletionItem(localize('json.bower.latest.version', 'latest'));
		proposal.insertText = '"{{latest}}"';
		proposal.kind = CompletionItemKind.Value;
		proposal.documentation = 'The latest version of the package';
		collector.add(proposal);
		return Promise.resolve(null);
	}

	public resolveSuggestion(item: CompletionItem) : Thenable<CompletionItem> {
		if (item.kind === CompletionItemKind.Property && item.documentation === '') {
			return this.getInfo(item.label).then(documentation => {
				if (documentation) {
					item.documentation = documentation;
					return item;
				}
				return null;
			});
		};
		return null;
	}

	private getInfo(pack: string): Thenable<string> {
		let queryUrl = 'https://bower.herokuapp.com/packages/' + encodeURIComponent(pack);

		return this.xhr({
			url : queryUrl
		}).then((success) => {
			try {
				let obj = JSON.parse(success.responseText);
				if (obj && obj.url) {
					let url : string = obj.url;
					if (url.indexOf('git://') === 0) {
						url = url.substring(6);
					}
					if (url.lastIndexOf('.git') === url.length - 4) {
						url = url.substring(0, url.length - 4);
					}
					return url;
				}
			} catch (e) {
				// ignore
			}
			return void 0;
		}, (error) => {
			return void 0;
		});
	}

	public getInfoContribution(resource: string, location: Location): Thenable<MarkedString[]> {
		if ((location.matches(['dependencies', '*']) || location.matches(['devDependencies', '*']))) {
			let pack = location.path[location.path.length - 1];
			if (typeof pack === 'string') {
				let htmlContent : MarkedString[] = [];
				htmlContent.push(localize('json.bower.package.hover', '{0}', pack));
				return this.getInfo(pack).then(documentation => {
					if (documentation) {
						htmlContent.push(documentation);
					}
					return htmlContent;
				});
			}
		}
		return null;
	}
}