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'use strict';
var winston = require('winston'),
db = require('../database'),
pubsub = require('../pubsub'),
nconf = require('nconf'),
utils = require('../../public/src/utils');
module.exports = function(Meta) {
Meta.config = {};
Meta.configs = {};
Meta.configs.init = function (callback) {
delete Meta.config;
Meta.configs.list(function (err, config) {
Iif (err) {
winston.error(err.stack);
return callback(err);
}
config['cache-buster'] = utils.generateUUID();
Meta.config = config;
callback();
});
};
Meta.configs.list = function (callback) {
db.getObject('config', function (err, config) {
config = config || {};
config.version = nconf.get('version');
config.registry = nconf.get('registry');
callback(err, config);
});
};
Meta.configs.get = function (field, callback) {
db.getObjectField('config', field, callback);
};
Meta.configs.getFields = function (fields, callback) {
db.getObjectFields('config', fields, callback);
};
Meta.configs.set = function (field, value, callback) {
callback = callback || function() {};
if (!field) {
return callback(new Error('invalid config field'));
}
db.setObjectField('config', field, value, function(err) {
if (err) {
return callback(err);
}
var data = {};
data[field] = value;
updateConfig(data);
callback();
});
};
Meta.configs.setMultiple = function(data, callback) {
processConfig(data, function(err) {
if (err) {
return callback(err);
}
db.setObject('config', data, function(err) {
if (err) {
return callback(err);
}
updateConfig(data);
callback();
});
});
};
function processConfig(data, callback) {
if (data.customCSS) {
saveRenderedCss(data, callback);
return;
}
callback();
}
function saveRenderedCss(data, callback) {
var less = require('less');
less.render(data.customCSS, {
compress: true
}, function(err, lessObject) {
if (err) {
winston.error('[less] Could not convert custom LESS to CSS! Please check your syntax.');
return callback(null, '');
}
data.renderedCustomCSS = lessObject.css;
callback();
});
}
function updateConfig(config) {
pubsub.publish('config:update', config);
}
pubsub.on('config:update', function onConfigReceived(config) {
if (typeof config !== 'object' || !Meta.config) {
return;
}
for(var field in config) {
if(config.hasOwnProperty(field)) {
Meta.config[field] = config[field];
}
}
});
Meta.configs.setOnEmpty = function (field, value, callback) {
Meta.configs.get(field, function (err, curValue) {
if (err) {
return callback(err);
}
if (!curValue) {
Meta.configs.set(field, value, callback);
} else {
callback();
}
});
};
Meta.configs.remove = function (field) {
db.deleteObjectField('config', field);
};
};
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