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plugin-manager.js
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plugin-manager.js
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"use strict";
const uncarried_locrec = require("locreq");
const locreq = uncarried_locrec(__dirname);
const path = require("path");
const fs = require("fs");
const resolve = require("resolve");
function custom_resolve (plugin_name, root){
try {
return resolve.sync(plugin_name, {basedir: root});
} catch (error){
return require.resolve(plugin_name);
}
}
function PluginManager(ConfigManager, Logger){
this.ConfigManager = ConfigManager;
this.Logger = Logger;
this.loaded_plugins = [];
}
PluginManager.pure = {
is_sealious_plugin: function(dir, module_name){
const plugin_package_info = PluginManager.pure.get_package_info(dir, module_name);
return plugin_package_info.keywords && plugin_package_info.keywords.indexOf("sealious-plugin") !== -1;
},
get_package_info: function(dir, package_name){
return require(PluginManager.pure.get_package_info_path(dir, package_name));
},
get_package_info_path: function(dir, package_name){
let package_path = custom_resolve(package_name, dir);
let package_info_path = null;
while (package_info_path === null){
const temp_path = path.resolve(package_path, "../package.json");
try {
fs.accessSync(temp_path, fs.F_OK);
package_info_path = temp_path;
} catch (e){
package_path = path.resolve(package_path, "../");
}
}
return package_info_path;
},
load_plugins: function(Logger, ConfigManager, plugins, sealious_dir, app){
Logger.info("Loading plugins...");
if (sealious_dir !== path.resolve("")){
PluginManager.pure.load_plugins_from_dir(Logger, ConfigManager, plugins, sealious_dir, app);
}
PluginManager.pure.load_plugins_from_dir(Logger, ConfigManager, plugins, "", app);
},
load_plugins_from_dir: function(Logger, ConfigManager, loaded_plugins, dir, app){
const root = path.resolve(dir);
const pkgfile = uncarried_locrec(dir).resolve("package.json");
const pkg = require(pkgfile);
const dependencies = pkg.dependencies || {};
const required_sealious_plugins = Object.keys(dependencies)
.filter(PluginManager.pure.is_sealious_plugin.bind({}, root));
if (required_sealious_plugins.length){
Logger.debug(`${pkg.name} (${pkgfile}) requires: ${required_sealious_plugins.join(", ")}`);
for (const i in required_sealious_plugins){
const plugin_name = required_sealious_plugins[i];
const plugin_info_path = PluginManager.pure.get_package_info_path(root, plugin_name);
const plugin_dir = path.resolve(plugin_info_path, "../");
ConfigManager.load_default_config_for_dir(plugin_dir);
PluginManager.pure.load_plugins_from_dir(Logger, ConfigManager, loaded_plugins, plugin_dir, app);
if(loaded_plugins.indexOf(plugin_name) === -1){
require(custom_resolve(plugin_name, plugin_dir))(app);
loaded_plugins.push(plugin_name);
Logger.info(`\t\u2713 ${plugin_name} (${plugin_dir})`);
}else{
Logger.info(`\ ${plugin_name} (already loaded)`);
}
}
}
}
};
// not all pure methods are kept here, as they're not intended to be called from outside
PluginManager.prototype = {
load_plugins: function(sealious_dir, app){return PluginManager.pure.load_plugins(this.Logger, this.ConfigManager, this.loaded_plugins, sealious_dir, app);},
};
module.exports = PluginManager;

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