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var path = require('path');
var format = require('util').format;
var OKQuery = require('okquery');
var OKView = require('okview');
var OKDB = require('okdb');
var OKResource = require('okresource')
var OKTemplate = require('oktemplate');
var OKServer = require('okserver');
var OKRestEndpoint = require('okrest');
var OKSchema = require('okschema');
/**
* OKCMS!
* Basically takes configuration and gives you a server.
*/
function OKCMS(options) {
options = options || {};
var root = this._root = options.root || 'www';
var schemaConfig = options.schemas || {};
var resourceConfig = options.resources || [];
var viewConfig = options.views || {
'/': { template: 'index' }
};
// TODO Make configurable
var db = this._db = new OKDB();
var templateCache = this._templateCache = new OKTemplate({root: root});
var server = this._server = new OKServer({root: root});
// Special query for getting meta info
var meta = this._meta = {
name: 'meta',
get: function() {
return db.getMeta();
}
};
var schemas = this._schemas = this._createSchemas(schemaConfig);
var resources = this._resources =
this._createResources(resourceConfig, db, schemas);
var views = this._views =
this._createViews(viewConfig, db, meta, templateCache);
this._initViews(server, views);
}
OKCMS.prototype.listen = function listen(port, options) {
options = options || {};
this._server.listen(port);
};
OKCMS.prototype._createSchemas = function(schemaConfig) {
schemaConfig = schemaConfig || {};
return Object.keys(schemaConfig).reduce(function(cache, key) {
var spec = schemaConfig[key];
cache[key] = OKSchema(spec);
return cache;
}, {});
}
OKCMS.prototype._createResources = function(resourceConfig, db, schemaCache) {
resourceConfig = resourceConfig || {};
return resourceConfig.map(function(config) {
var type = config.type;
var schema = schemaCache[type];
if (!schema)
throw new Error('Resource config references nonexistent schema');
// If no id is provided, default to "select all"
var id = config.id || '*';
return OKResource({
type: type,
id: id,
schema: schema
})
});
};
OKCMS.prototype._createViews = function(viewConfig, db,
meta, templateCache) {
viewConfig = viewConfig || {};
var self = this;
var createQueries = this._createQueries.bind(this);
return Object.keys(viewConfig).reduce(function(cache, route) {
var config = viewConfig[route];
var templateName = config.template || getDefaultTemplate(route, config);
var template = templateCache.getTemplate(templateName);
if (!template)
throw new Error(format('No template named "%s" found', templateName));
var queryConfig = config.data || [];
var queries = createQueries(queryConfig, db);
// Instantiate!
cache[route] = OKView({
route: route,
template: template,
queries: queries,
meta: meta
});
return cache;
}, {});
/**
* Returns the default template for a view config
*/
function getDefaultTemplate(route, config) {
// Root route defaults to index
if (/^\/?$/.test(route))
return 'index';
// Otherwise default to the backing resource name
else if (config && config.data && config.data.type)
return config.data.type;
// Otherwise dunno
else
return '404';
}
}
OKCMS.prototype._createQueries = function(queryConfig, db) {
queryConfig = queryConfig || {};
if (!queryConfig.length)
queryConfig = [queryConfig];
return queryConfig.map(function(config) {
// Default to "select all" query
var id = config.id || '*';
return new OKQuery(db, {
type: config.type,
id: id
});
});
};
OKCMS.prototype._initViews = function(server, views) {
Object.keys(views)
// Make sure more specific routes are processed first
// TODO This is not semantically correct (bro)
// Will prob manifest bugs
.sort(function(a, b) {
return a.length < b.length;
})
// Add the views
.forEach(function(route) {
server.addView(route, views[route]);
});
};
module.exports = {
createApp: function(options) {
return new OKCMS(options);
},
OKResource: OKResource,
OKView: OKView,
OKRestEndpoint: OKRestEndpoint
};
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