/*---------------------------------------------------------------------------------------------
 *  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 nls = require('vs/nls');
import {IJSONSchema} from 'vs/base/common/jsonSchema';
import {PluginsRegistry} from 'vs/platform/plugins/common/pluginsRegistry';
import {Registry} from 'vs/platform/platform';
import JSONContributionRegistry = require('vs/platform/jsonschemas/common/jsonContributionRegistry');
import strings = require('vs/base/common/strings');
import paths = require('vs/base/common/paths');
import {INullService} from 'vs/platform/instantiation/common/instantiation';

interface IJSONValidationExtensionPoint {
	fileMatch: string,
	url: string
}

let schemaRegistry = <JSONContributionRegistry.IJSONContributionRegistry>Registry.as(JSONContributionRegistry.Extensions.JSONContribution);

let configurationExtPoint = PluginsRegistry.registerExtensionPoint<IJSONValidationExtensionPoint[]>('jsonValidation', {
	description: nls.localize('contributes.jsonValidation', 'Contributes json schema configuration.'),
	type: 'array',
	default: [ { fileMatch: "{{file.json}}", url: "{{url}}" } ],
	items: {
		type: 'object',
		default: { fileMatch: "{{file.json}}", url: "{{url}}" },
		properties: {
			fileMatch: {
				type: 'string',
				description: nls.localize('contributes.jsonValidation.fileMatch', 'The file pattern to match, for example "package.json" or "*.launch".'),
			},
			url: {
				description: nls.localize('contributes.jsonValidation.url', 'A schema URL (\'http:\', \'https:\') or relative path to the extension folder (\'./\').'),
				type: 'string'
			}
		}
	}
});

export class JSONValidationExtensionPoint {

	constructor(
		@INullService modeService: INullService
	) {
		configurationExtPoint.setHandler((extensions) => {
			for (var i = 0; i < extensions.length; i++) {
				var extensionValue = <IJSONValidationExtensionPoint[]> extensions[i].value;
				var collector = extensions[i].collector;
				var extensionPath = extensions[i].description.extensionFolderPath;

				if (!extensionValue || !Array.isArray(extensionValue)) {
					collector.error(nls.localize('invalid.jsonValidation', "'configuration.jsonValidation' must be a array"));
					return;
				}
				extensionValue.forEach(extension => {
					if (typeof extension.fileMatch !== 'string') {
						collector.error(nls.localize('invalid.fileMatch', "'configuration.jsonValidation.fileMatch' must be defined"));
						return;
					}
					var uri = extension.url;
					if (typeof extension.url !== 'string') {
						collector.error(nls.localize('invalid.url', "'configuration.jsonValidation.url' must be a URL or relative path"));
						return;
					}
					if (strings.startsWith(uri, './')) {
						uri = paths.normalize(paths.join(extensionPath, uri));
					} else if (!strings.startsWith(uri, 'https:/') && strings.startsWith(uri, 'https:/')) {
						collector.error(nls.localize('invalid.url.schema', "'configuration.jsonValidation.url' must start with 'http:', 'https:' or './' to reference schemas located in the extension"));
						return;
					}
					var fileMatch = extension.fileMatch;
					if (!strings.startsWith(extension.fileMatch, '/')) {
						fileMatch = '/' + fileMatch;
					}
					schemaRegistry.addSchemaFileAssociation(fileMatch, uri);
				});
			}
		});
	}

}