/**
 * Name: Log
 * Description: Log commands to a channel.
 */
var _ = require('underscore')._,
  process = require('process');

var log = function(dbot) {
  this.ignoredCommands = [];

  this.api = {
    'log': function(server, user, message) {
      this.api.logWithChannel(server, user, 'nochan', message);
    },

    'logWithChannel': function(server, user, channel, message) { // muh legacy
      var logChannel = this.config.logChannel[server];
      dbot.say(server, logChannel, dbot.t('log_message', {
        'time': new Date().toUTCString(),
        'command': message,
        'channel': channel,
        'user': user
      }));
    },

    'logError': function(server, err) {
      var stack = err.stack.split('\n').slice(1, dbot.config.debugLevel + 1),
        logChannel = this.config.logChannel[server],
        time = new Date().toUTCString();

      dbot.say(server, logChannel, dbot.t('error_message', {
        'time': time,
        'error': 'Message: ' + err
      })); 

      _.each(stack, function(stackLine, index) {
        dbot.say(server, logChannel, dbot.t('error_message', {
          'time': time,
          'error': 'Stack[' + index + ']: ' +
            stackLine.trim()
        }));
      });
    },

    'ignoreCommand': function(commandName) {
      this.ignoredCommands.push(commandName);  
    }
  };

  this.onLoad = function() {
    dbot.api.event.addHook('command', function(event) {
      var logChannel = this.config.logChannel[event.server];
        channel = event.channel.name || 'PM';
      if(logChannel && !_.include(this.ignoredCommands, event.message.split(' ')[0])) {
        dbot.say(event.server, logChannel, dbot.t('log_message', {
          'time': new Date().toUTCString(),
          'channel': channel,
          'command': event.message,
          'user': event.user
        }));
      }
    }.bind(this));

    process.on('uncaughtException', function(err) {
      console.log(err);
      _.each(this.config.logChannel, function(chan, server) {
        this.api.logError(server, err); 
      }, this);
      process.exit(1);
    }.bind(this));
  }.bind(this);
};

exports.fetch = function(dbot) {
  return new log(dbot);
};