/********************************************************************************
 * Copyright (C) 2018 Ericsson and others.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the Eclipse
 * Public License v. 2.0 are satisfied: GNU General Public License, version 2
 * with the GNU Classpath Exception which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 ********************************************************************************/

import { interfaces } from 'inversify';
import { PreferenceSchema, PreferenceProxy, PreferenceService, createPreferenceProxy, PreferenceContribution } from '@theia/core/lib/browser/preferences';
import { CppBuildConfiguration } from '../common/cpp-build-configuration-protocol';
import { CLANGD_EXECUTABLE_DEFAULT } from '../common';

/**
 * Representation of the C/C++ preference schema.
 */
export const cppPreferencesSchema: PreferenceSchema = {
    type: 'object',
    properties: {
        'cpp.buildConfigurations': {
            description: 'List of build configurations',
            type: 'array',
            items: {
                type: 'object',
                properties: {
                    'name': {
                        type: 'string'
                    },
                    'directory': {
                        type: 'string'
                    },
                    'commands': {
                        type: 'object',
                        properties: {
                            'build': {
                                type: 'string',
                            }
                        },
                    }
                },
                required: ['name', 'directory'],
            },
            scope: 'resource',
            default: [],
        },
        'cpp.experimentalCompilationDatabaseMap': {
            description: 'Enable experimental support for multiple compilation databases.',
            default: false,
            type: 'boolean'
        },
        'cpp.clangdExecutable': {
            description: 'Specify the executable name/path to run in order to start clangd.',
            default: CLANGD_EXECUTABLE_DEFAULT,
            type: 'string'
        },
        'cpp.clangdArgs': {
            description: 'Specify the arguments to pass to clangd when starting the language server.',
            default: '',
            type: 'string'
        },
        'cpp.clangTidy': {
            description: 'Enable/disable C/C++ linting.',
            default: false,
            type: 'boolean'
        },
        'cpp.clangTidyChecks': {
            description: 'Specify comma separated arguments to pass to clang-tidy. Activated only if cpp.clang-tidy is enabled',
            default: '',
            type: 'string'
        }
    }
};

/**
 * Representation of C/C++ preference configuration.
 */
export class CppConfiguration {
    'cpp.buildConfigurations': CppBuildConfiguration[];
    'cpp.experimentalCompilationDatabaseMap': boolean;
    'cpp.clangdExecutable': string;
    'cpp.clangdArgs': string;
    'cpp.clangTidy': boolean;
    'cpp.clangTidyChecks': string;
}

export const CppPreferences = Symbol('CppPreferences');
export type CppPreferences = PreferenceProxy<CppConfiguration>;

/**
 * Create the C/C++ preferences.
 * @param preferences the preference service.
 *
 * @returns the C/C++ preferences.
 */
export function createCppPreferences(preferences: PreferenceService): CppPreferences {
    return createPreferenceProxy(preferences, cppPreferencesSchema);
}

/**
 * Bind the C/C++ preferences to the application.
 */
export function bindCppPreferences(bind: interfaces.Bind): void {
    bind(CppPreferences).toDynamicValue(ctx => {
        const preferences = ctx.container.get<PreferenceService>(PreferenceService);
        return createCppPreferences(preferences);
    }).inSingletonScope();

    bind(PreferenceContribution).toConstantValue({ schema: cppPreferencesSchema });
}