import {readFileSync} from 'fs';
import {argv} from 'yargs';

// --------------
// Configuration.
export const ENV = argv['env'] || 'dev';
export const DEBUG = argv['debug'] || false;
export const PORT = argv['port'] || 5555;
export const LIVE_RELOAD_PORT = argv['reload-port'] || 4002;
export const DOCS_PORT = argv['docs-port'] || 4003;
export const APP_BASE = argv['base'] || '/';

export const APP_TITLE = 'Postgres EXPLAIN Visualizer (pev)';

export const APP_SRC = 'app';
export const ASSETS_SRC = `${APP_SRC}/assets`;

export const TOOLS_DIR = 'tools';
export const TMP_DIR = 'tmp';
export const TEST_DEST = 'test';
export const DOCS_DEST = 'docs';
export const APP_DEST = `dist/${ENV}`;
export const ASSETS_DEST = `${APP_DEST}/assets`;
export const BUNDLES_DEST = `${APP_DEST}/bundles`;
export const CSS_DEST = `${APP_DEST}/css`;
export const FONTS_DEST = `${APP_DEST}/fonts`;
export const LIB_DEST = `${APP_DEST}/lib`;
export const APP_ROOT = ENV === 'dev' ? `${APP_BASE}${APP_DEST}/` : `${APP_BASE}`;
export const VERSION = appVersion();

export const VERSION_NPM = '2.14.7';
export const VERSION_NODE = '4.0.0';

// Declare NPM dependencies (Note that globs should not be injected).
export const NPM_DEPENDENCIES = [
    { src: 'systemjs/dist/system-polyfills.js', dest: LIB_DEST },

    { src: 'es6-shim/es6-shim.min.js', inject: 'shims', dest: LIB_DEST },
    { src: 'reflect-metadata/Reflect.js', inject: 'shims', dest: LIB_DEST },
    { src: 'systemjs/dist/system.src.js', inject: 'shims', dest: LIB_DEST },
    { src: 'angular2/bundles/angular2-polyfills.js', inject: 'shims', dest: LIB_DEST },

    // Faster dev page load
    { src: 'rxjs/bundles/Rx.min.js', inject: 'libs', dest: LIB_DEST },
    { src: 'angular2/bundles/angular2.min.js', inject: 'libs', dest: LIB_DEST },
    { src: 'angular2/bundles/router.js', inject: 'libs', dest: LIB_DEST }, // use router.min.js with alpha47
    { src: 'angular2/bundles/http.min.js', inject: 'libs', dest: LIB_DEST },

    { src: 'lodash/index.js', inject: 'libs', dest: LIB_DEST },
    { src: 'moment/moment.js', inject: 'libs', dest: LIB_DEST },
    { src: 'highlight.js/lib/highlight.js', inject: 'libs', dest: LIB_DEST },
];

// Declare local files that needs to be injected
export const APP_ASSETS = [
    { src: `${ASSETS_SRC}/css/styles.css`, inject: true, dest: CSS_DEST }
];

NPM_DEPENDENCIES
    .filter(d => !/\*/.test(d.src)) // Skip globs
    .forEach(d => d.src = require.resolve(d.src));

export const DEPENDENCIES = NPM_DEPENDENCIES.concat(APP_ASSETS);

// ----------------
// SystemsJS Configuration.
const SYSTEM_CONFIG_DEV = {
    defaultJSExtensions: true,
    paths: {
        'bootstrap': `${APP_ROOT}bootstrap`,
        '*': `${APP_BASE}node_modules/*`
    }
};

const SYSTEM_CONFIG_PROD = {
    defaultJSExtensions: true,
    bundles: {
        'bundles/app': ['bootstrap']
    }
};

export const SYSTEM_CONFIG = ENV === 'dev' ? SYSTEM_CONFIG_DEV : SYSTEM_CONFIG_PROD;

// This is important to keep clean module names as 'module name == module uri'.
export const SYSTEM_CONFIG_BUILDER = {
    defaultJSExtensions: true,
    paths: {
        '*': `${TMP_DIR}/*`,
        'angular2/*': 'node_modules/angular2/*',
        'rxjs/*': 'node_modules/rxjs/*'
    }
};

// --------------
// Private.
function appVersion(): number | string {
    var pkg = JSON.parse(readFileSync('package.json').toString());
    return pkg.version;
}