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

import * as nls from 'vs/nls';
import * as objects from 'vs/base/common/objects';
import { Registry } from 'vs/platform/registry/common/platform';
import { IJSONSchema } from 'vs/base/common/jsonSchema';
import { ExtensionsRegistry, IExtensionPointUser } from 'vs/platform/extensions/common/extensionsRegistry';
import { IConfigurationNode, IConfigurationRegistry, Extensions, editorConfigurationSchemaId, IDefaultConfigurationExtension, validateProperty, ConfigurationScope } from 'vs/platform/configuration/common/configurationRegistry';
import { IJSONContributionRegistry, Extensions as JSONExtensions } from 'vs/platform/jsonschemas/common/jsonContributionRegistry';
import { workspaceSettingsSchemaId } from 'vs/workbench/services/configuration/common/configuration';

const configurationRegistry = Registry.as<IConfigurationRegistry>(Extensions.Configuration);

const configurationEntrySchema: IJSONSchema = {
	type: 'object',
	defaultSnippets: [{ body: { title: '', properties: {} } }],
	properties: {
		title: {
			description: nls.localize('vscode.extension.contributes.configuration.title', 'A summary of the settings. This label will be used in the settings file as separating comment.'),
			type: 'string'
		},
		properties: {
			description: nls.localize('vscode.extension.contributes.configuration.properties', 'Description of the configuration properties.'),
			type: 'object',
			additionalProperties: {
				anyOf: [
					{ $ref: 'http://json-schema.org/draft-04/schema#' },
					{
						type: 'object',
						properties: {
							isExecutable: {
								type: 'boolean'
							},
							scope: {
								type: 'string',
								enum: ['window', 'resource'],
								default: 'window',
								enumDescriptions: [
									nls.localize('scope.window.description', "Window specific configuration, which can be configured in the User or Workspace settings."),
									nls.localize('scope.resource.description', "Resource specific configuration, which can be configured in the User, Workspace or Folder settings.")
								],
								description: nls.localize('scope.description', "Scope in which the configuration is applicable. Available scopes are `window` and `resource`.")
							}
						}
					}
				]
			}
		}
	}
};

let registeredDefaultConfigurations: IDefaultConfigurationExtension[] = [];

// BEGIN VSCode extension point `configurationDefaults`
const defaultConfigurationExtPoint = ExtensionsRegistry.registerExtensionPoint<IConfigurationNode>('configurationDefaults', [], {
	description: nls.localize('vscode.extension.contributes.defaultConfiguration', 'Contributes default editor configuration settings by language.'),
	type: 'object',
	defaultSnippets: [{ body: {} }],
	patternProperties: {
		'\\[.*\\]$': {
			type: 'object',
			default: {},
			$ref: editorConfigurationSchemaId,
		}
	}
});
defaultConfigurationExtPoint.setHandler(extensions => {
	registeredDefaultConfigurations = extensions.map(extension => {
		const id = extension.description.id;
		const name = extension.description.name;
		const defaults = objects.deepClone(extension.value);
		return <IDefaultConfigurationExtension>{
			id, name, defaults
		};
	});
});
// END VSCode extension point `configurationDefaults`


// BEGIN VSCode extension point `configuration`
const configurationExtPoint = ExtensionsRegistry.registerExtensionPoint<IConfigurationNode>('configuration', [defaultConfigurationExtPoint], {
	description: nls.localize('vscode.extension.contributes.configuration', 'Contributes configuration settings.'),
	oneOf: [
		configurationEntrySchema,
		{
			type: 'array',
			items: configurationEntrySchema
		}
	]
});
configurationExtPoint.setHandler(extensions => {
	const configurations: IConfigurationNode[] = [];

	function handleConfiguration(node: IConfigurationNode, id: string, extension: IExtensionPointUser<any>) {
		let configuration = objects.deepClone(node);

		if (configuration.title && (typeof configuration.title !== 'string')) {
			extension.collector.error(nls.localize('invalid.title', "'configuration.title' must be a string"));
		}

		validateProperties(configuration, extension);

		configuration.id = id;
		configurations.push(configuration);
	}

	for (let extension of extensions) {
		const value = <IConfigurationNode | IConfigurationNode[]>extension.value;
		const id = extension.description.id;
		if (!Array.isArray(value)) {
			handleConfiguration(value, id, extension);
		} else {
			value.forEach(v => handleConfiguration(v, id, extension));
		}
	}
	configurationRegistry.registerConfigurations(configurations, registeredDefaultConfigurations, false);
});
// END VSCode extension point `configuration`

function validateProperties(configuration: IConfigurationNode, extension: IExtensionPointUser<any>): void {
	let properties = configuration.properties;
	if (properties) {
		if (typeof properties !== 'object') {
			extension.collector.error(nls.localize('invalid.properties', "'configuration.properties' must be an object"));
			configuration.properties = {};
		}
		for (let key in properties) {
			const message = validateProperty(key);
			const propertyConfiguration = configuration.properties[key];
			propertyConfiguration.scope = propertyConfiguration.scope && propertyConfiguration.scope.toString() === 'resource' ? ConfigurationScope.RESOURCE : ConfigurationScope.WINDOW;
			propertyConfiguration.notMultiRootAdopted = !(extension.description.isBuiltin || (Array.isArray(extension.description.keywords) && extension.description.keywords.indexOf('multi-root ready') !== -1));
			if (message) {
				extension.collector.warn(message);
				delete properties[key];
			}
		}
	}
	let subNodes = configuration.allOf;
	if (subNodes) {
		extension.collector.error(nls.localize('invalid.allOf', "'configuration.allOf' is deprecated and should no longer be used. Instead, pass multiple configuration sections as an array to the 'configuration' contribution point."));
		for (let node of subNodes) {
			validateProperties(node, extension);
		}
	}
}

const jsonRegistry = Registry.as<IJSONContributionRegistry>(JSONExtensions.JSONContribution);
jsonRegistry.registerSchema('vscode://schemas/workspaceConfig', {
	default: {
		folders: [
			{
				path: ''
			}
		],
		settings: {
		}
	},
	required: ['folders'],
	properties: {
		'folders': {
			minItems: 0,
			uniqueItems: true,
			description: nls.localize('workspaceConfig.folders.description', "List of folders to be loaded in the workspace."),
			items: {
				type: 'object',
				default: { path: '' },
				oneOf: [{
					properties: {
						path: {
							type: 'string',
							description: nls.localize('workspaceConfig.path.description', "A file path. e.g. `/root/folderA` or `./folderA` for a relative path that will be resolved against the location of the workspace file.")
						},
						name: {
							type: 'string',
							description: nls.localize('workspaceConfig.name.description', "An optional name for the folder. ")
						}
					},
					required: ['path']
				}, {
					properties: {
						uri: {
							type: 'string',
							description: nls.localize('workspaceConfig.uri.description', "URI of the folder")
						},
						name: {
							type: 'string',
							description: nls.localize('workspaceConfig.name.description', "An optional name for the folder. ")
						}
					},
					required: ['uri']
				}]
			}
		},
		'settings': {
			type: 'object',
			default: {},
			description: nls.localize('workspaceConfig.settings.description', "Workspace settings"),
			$ref: workspaceSettingsSchemaId
		},
		'extensions': {
			type: 'object',
			default: {},
			description: nls.localize('workspaceConfig.extensions.description', "Workspace extensions"),
			$ref: 'vscode://schemas/extensions'
		}
	},
	additionalProperties: false,
	errorMessage: nls.localize('unknownWorkspaceProperty', "Unknown workspace configuration property")
});