background.js

// Generated by CoffeeScript 1.6.3
(function() {
  var display_status, is_config_valid, proxy, switch_proxy, test_proxy;

  test_proxy = function(cb) {
    return cb(true);
  };

  is_config_valid = function(conf) {
    return typeof conf === "object" && conf.host.trim() && /\d+/.exec(conf.port.trim());
  };

  proxy = function(enable, conf, cb) {
    var config;
    if (enable && is_config_valid(conf)) {
      config = {
        mode: "fixed_servers",
        rules: {
          singleProxy: {
            scheme: "socks5",
            host: conf.host,
            port: Number(conf.port)
          },
          bypassList: conf.bypassList
        }
      };
      return chrome.proxy.settings.set({
        value: config,
        scope: 'regular'
      }, test_proxy(cb));
    } else {
      if (!is_config_valid(conf)) {
        chrome.tabs.create({
          url: "options.html"
        });
        alert("[WARN]: SOCKS5 proxy is not configured yet. \n\nPlease configure and save it.");
      }
      config = {
        mode: "direct"
      };
      return chrome.proxy.settings.set({
        value: config,
        scope: 'regular'
      }, function() {
        return cb(null);
      });
    }
  };

  switch_proxy = function(action) {
    return chrome.storage.local.get(["enabled", "fixed_servers"], function(data) {
      if (!("enabled" in data)) {
        data.enabled = false;
      }
      if (action) {
        data.enabled = !data.enabled;
      }
      return proxy(data.enabled, data.fixed_servers, function(enabled) {
        data.enabled = enabled;
        return chrome.storage.local.set(data, function() {
          if (chrome.runtime.lastError) {
            console.error(chrome.runtime.lastError);
          }
          return display_status();
        });
      });
    });
  };

  display_status = function() {
    return chrome.storage.local.get("enabled", function(data) {
      return chrome.browserAction.setBadgeText({
        text: data.enabled ? "on" : "off"
      });
    });
  };

  chrome.runtime.onStartup.addListener(display_status);

  chrome.runtime.onInstalled.addListener(display_status);

  chrome.browserAction.onClicked.addListener(switch_proxy);

  chrome.runtime.onMessage.addListener(function(request, sender, sendResponse) {
    if (request && (request.id === "refresh")) {
      switch_proxy();
    }
    if (sendResponse) {
      return sendResponse(null);
    }
  });

}).call(this);