Gottwik/Enduro

// * ———————————————————————————————————————————————————————— * //
// *     brick handler
// *    bricks are plugins for enduro
// *    this module handles their loading and plugging into enduro
// * ———————————————————————————————————————————————————————— * //
const brick_handler = function () {}

// * vendor dependencies
const Promise = require('bluebird')
const path = require('path')
const fs = Promise.promisifyAll(require('fs-extra'))

// * enduro dependencies
const flat = require(enduro.enduro_path + '/libs/flat_db/flat')
const flat_helpers = require(enduro.enduro_path + '/libs/flat_db/flat_helpers')

// * ———————————————————————————————————————————————————————— * //
// *     loads, initialize and pre-store brick-related data
// * ———————————————————————————————————————————————————————— * //
brick_handler.prototype.load_bricks = function () {
    const self = this
    const all_bricks = enduro.config.bricks

    enduro.config.brick_admin_injects = []
    
    // will gather all brick's settings which will be dumped into js file
    let brick_admin_settings = {}

    for (brick_name in all_bricks) {
        const brick_instance = self._require_brick(brick_name)
        const brick_settings = all_bricks[brick_name]
        
        if (brick_instance.init) {
            brick_instance.init(brick_settings)
        }

        if (brick_instance.brick_configuration.admin_js_inject) {
            enduro.config.brick_admin_injects.push('/brick/' + brick_name + '/' + brick_instance.brick_configuration.admin_js_inject)
        }

        // add settings to global admin js settings endpoint
        brick_admin_settings[brick_name] = brick_settings
    }
    const brick_admin_settings_path = path.join(enduro.project_path, enduro.config.build_folder, '/_prebuilt/brick_admin_settings.js');
    const brick_admin_settings_string_to_save = 'var brick_admin_settings = ' + JSON.stringify(brick_admin_settings)
    return flat_helpers.ensure_directory_existence(brick_admin_settings_path)
        .then(() => {
            return fs.writeFileAsync(brick_admin_settings_path, brick_admin_settings_string_to_save);
        })
}

// * ———————————————————————————————————————————————————————— * //
// *     server brick static assets
// *     every brick comes with static files which enduro will server under
// *     /bricks/:brick_name/...
// * ———————————————————————————————————————————————————————— * //
brick_handler.prototype.serve_brick_static_assets = function (app, express) {
    const self = this

    for (brick_name in enduro.config.bricks) {
        const bricks_asset_folder = path.join(self._get_bricks_root_folder(brick_name), 'assets')
        app.use('/brick/' + brick_name, express.static(bricks_asset_folder))
    }
}

// * ———————————————————————————————————————————————————————— * //
// *     require brick by brick name
// * ———————————————————————————————————————————————————————— * //
brick_handler.prototype._require_brick = function (brick_name) {
    const self = this

    // not sure if this is the best way to handle this
    return require(self._get_bricks_root_folder(brick_name))
}

// * ———————————————————————————————————————————————————————— * //
// *     get absolute path to brick's root folder
// * ———————————————————————————————————————————————————————— * //
brick_handler.prototype._get_bricks_root_folder = function (brick_name) {
    return path.join(enduro.project_path, 'node_modules', brick_name)
}

module.exports = new brick_handler()