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var _ = require("lodash");
var Q = require("q");
var Plugin = require("./plugin");
var PluginsList = function(book, plugins) {
this.book = book;
this.log = this.book.log;
// List of Plugin objects
this.plugins = [];
// List of names of failed plugins
this.failed = [];
// List of plugins resources
this.resources = {};
_.each(Plugin.RESOURCES, function(resourceType) {
this.resources[resourceType] = [];
}, this);
// Map of html snippets
this.htmlSnippets = {};
// Bind methods
_.bindAll(this);
if (plugins) this.load(plugins);
};
// return count of plugins
PluginsList.prototype.count = function() {
return this.plugins.length;
};
// Add and load a plugin
PluginsList.prototype.load = function(plugin, options) {
var that = this;
options = _.defaults(options || {}, {
assetsBase: "book"
});
if (_.isArray(plugin)) {
return _.reduce(plugin, function(prev, p) {
return prev.then(function() {
return that.load(p);
});
}, Q());
}
if (_.isObject(plugin) && !(plugin instanceof Plugin)) plugin = plugin.name;
if (_.isString(plugin)) plugin = new Plugin(this.book, plugin);
that.log.info("load plugin", plugin.name, "....");
if (!plugin.isValid()) {
that.log.info.fail();
that.failed.push(plugin.name);
return Q();
} else {
that.log.info.ok();
// Push in the list
that.plugins.push(plugin);
}
// Extract filters
_.each(plugin.getFilters(), function(filterFunc, filterName) {
that.book.template.addFilter(filterName, filterFunc);
});
// Extract blocks
_.each(plugin.getBlocks(), function(block, blockName) {
that.book.template.addBlock(blockName, block);
});
return Q()
.then(function() {
return plugin.getResources(options.assetsBase);
})
.then(function(plResources) {
// Extract js and css
_.each(Plugin.RESOURCES, function(resourceType) {
that.resources[resourceType].concat(plResources[resourceType] || []);
});
// Map of html resources by name added by each plugin
_.each(plResources.html || {}, function(value, tag) {
// Turn into function if not one already
if (!_.isFunction(value)) value = _.constant(value);
that.htmlSnippets[tag] = that.htmlSnippets[tag] || [];
that.htmlSnippets[tag].push(value);
});
});
};
// Call a hook
PluginsList.prototype.hook = function(name, data) {
return _.reduce(this.plugins, function(prev, plugin) {
return prev.then(function(ret) {
return plugin.callHook(name, ret);
});
}, Q(data));
};
// Return a template from a plugin
PluginsList.prototype.template = function(name) {
var withTpl = _.find(this.plugins, function(plugin) {
return (
plugin.infos.templates &&
plugin.infos.templates[name]
);
});
if (!withTpl) return null;
return withTpl.resolveFile(withTpl.infos.templates[name]);
};
// Return an html snippet
PluginsList.prototype.html = function(tag, context, options) {
return _.map(this.htmlSnippets[tag] || [], function(code) {
return code.call(context, options);
}).join("\n");
};
module.exports = PluginsList;
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