var fs = require('fs');

var path = require('path');

var Course = {

all() {

return fs.readdirSync(path.join(__dirname, '..', '..', 'courses'));

},

find(id) {

if (this.all().indexOf(id) > -1) {

return {

name: id,

challenges: require(path.join(__dirname, '..', '..', 'courses', id, 'index.js'))

};

} else {

return { error: `invalid course ${id}` };

}

}

}

module.exports = Course;