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import async from 'async';
import config from './config.js';
import jazz from 'jazz';
import p from 'path';
import runner from './runner.js';
import task from './task.js';
import util from 'util';
class Bob {
/**
* Constructor for initialising Bob.
*
* @param {Object} opts: optional
* - appDir: directory where the userland application calls Bob from
* - bobDir: directory where Bob's installation is located
* - appName: name of the userland application (retrieved from its package.json)
* - appVersion: version value of the userland application (retrieved from its package.json)
* - bobMode: either `human` or `robot`, when you are a robot - you have to declare yourself :-]
* - quiet: when true, only display task name and command, but without the command output
*/
constructor(opts) {
this.opts = opts;
}
/**
* Bob is goin' to work!
* Execute specified tasks
*
* @param {Array} taskNames: an array of task names
* @param {Function} cb: standard cb(err, result) callback
*/
build(taskNames, cb) {
const EXEC_OPTS = {
cwd: this.opts.appDir,
quiet: this.opts.quiet,
maxBuffer: this.opts.maxBufferInKb * 1024
};
const self = this;
this._init(taskNames, (err, settings) => {
if (err) { cb(err); } else {
self._commands(taskNames, settings, (err, commands) => {
if (err) { cb(err); } else {
runner.execSeries(commands, EXEC_OPTS, cb);
}
});
}
});
}
/**
* Load Bob task files and application config file, and install optional dependencies, all in parallel.
*
* @param {Array} taskNames: an array of task names
* @param {Function} cb: standard cb(err, result) callback
*/
_init(taskNames, cb) {
const self = this;
function loadTask(cb) {
task.load(taskNames, p.join(self.opts.bobDir, 'conf', 'tasks'), cb);
}
function loadConfig(cb) {
config.load(taskNames, self.opts.appDir, cb);
}
async.parallel({ bobTasks: loadTask, appConfig: loadConfig }, cb);
}
/**
* Prepare commands to execute.
*
* @param {Array} taskNames: an array of task names
* @param {Object} settings: tasks and application configs
* @param {Function} cb: standard cb(err, result) callback
*/
_commands(taskNames, settings, cb) {
const TPL_PARAMS = {
app: this.opts.appDir,
bob: this.opts.bobDir,
name: this.opts.appName,
tmp: this.opts.tmpDir,
version: this.opts.appVersion
};
const bobTasks = settings.bobTasks,
bobMode = this.opts.bobMode,
self = this;
const commands = [];
taskNames.forEach((taskName) => {
self._taskTypeNames(taskName, settings).forEach((taskTypeName) => {
const taskType = bobTasks[taskName].types[taskTypeName];
Object.keys(taskType).forEach((key) => {
if (typeof taskType[key] === 'object') {
taskType[key] = taskType[key][bobMode];
}
});
taskType.preOpts = taskType.preOpts || taskType.opts;
// strip undefined and null from command elements
const elems = [taskType.bin, taskType.preOpts, taskType.args, taskType.postOpts].filter(elem => elem);
commands.push({
format: util.format(elems.join(' ')),
meta: {
task: taskName,
type: taskTypeName
}
});
});
});
const jobs = [];
commands.forEach((command) => {
jobs.push((cb) => {
jazz.compile(command.format).process(TPL_PARAMS, (result) => {
command.exec = result;
delete command.format;
cb(null, command);
});
});
});
async.parallel(jobs, cb);
}
_taskTypeNames(taskName, settings) {
// NOTE: allow multiple types in application config
let taskTypeNames =
(settings.appConfig[taskName] && settings.appConfig[taskName].type) ?
settings.appConfig[taskName].type :
settings.bobTasks[taskName].default;
if (!Array.isArray(taskTypeNames)) {
taskTypeNames = [taskTypeNames];
}
return taskTypeNames;
}
}
export {
Bob as default
};
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