var logger = require('winston');
var fs = require('fs');
var Promise = require('promise');

class PluginManager {
  constructor(config) {
    this.enabledPlugins = [];
    this.enabledPmPlugins = [];
    this.plugins = [];
    this.pmPlugins = [];
    this.config = config;

    var that = this;

    config.plugins.forEach(function(pluginName) {
      logger.info('checking ' + pluginName + '...');

      if(fs.existsSync('./plugins/'+pluginName.toLowerCase()+'.js')) {
        logger.info('* Exists. Enabling...');
        that.enabledPlugins.push(pluginName.toLowerCase());
      }
      if(fs.existsSync('./plugins/pm'+pluginName.toLowerCase()+'.js')) {
        logger.info('* Exists as PM plugin. Enabling...');
        that.enabledPmPlugins.push(pluginName.toLowerCase());
      }
    });
  }

  loadAllPlugins() {
    var that = this;
    this.enabledPlugins.forEach(function(pluginName) {
      var Plugin = require('./' + pluginName + '.js');

      var plugin = new Plugin(that.config);
      that.plugins.push(plugin);
    });

    this.enabledPmPlugins.forEach(function(pluginName) {
      var Plugin = require('./pm' + pluginName + '.js');

      var plugin = new Plugin(that.config);
      that.pmPlugins.push(plugin);
    });
  }

  testPlugins(input, publicChat) {
    if (typeof publicChat === 'undefined') {
      publicChat = true
    }

    var promises = [];

    if (publicChat) {
      for(let i = 0; i < this.plugins.length; i++) {
        var plugin = this.plugins[i];
        if(plugin.test(input)) {
          logger.info('* Plugin ' + plugin.name + ' reported hit');
          promises.push(plugin.result(input));
        }
      }
    } else {
      for(let i = 0; i < this.pmPlugins.length; i++) {
        var plugin = this.pmPlugins[i];

        if(plugin.test(input)) {
          logger.info('* Plugin ' + plugin.name + ' reported hit');
          promises.push(plugin.result(input));
        }
      }
    }

    return Promise.all(promises);
  }

}

// export default BasePlugin;
module.exports = PluginManager;