var Pusher = require('core/pusher').default;
var Logger = require('core/logger').default;
var global = Function("return this")();

describe("Logger", function() {
  var _consoleLogCalls;
  var _consoleWarnCalls;
  var _consoleErrorCalls;

  var _nativeConsole;

  beforeEach(function() {
    _consoleLogCalls = [];
    _consoleWarnCalls = [];
    _consoleErrorCalls = [];

    _nativeConsole = global.console
    global.console = {
      log: function() {
        _consoleLogCalls.push(arguments);
      },
      warn: function() {
        _consoleWarnCalls.push(arguments);
      },
      error: function() {
        _consoleErrorCalls.push(arguments);
      },
    }

  });

  afterEach(function() {
    global.console = _nativeConsole;
  });

  // logToConsole should be disabled by default
  describe("with logToConsole == false", function() {
    it("should not log to the console", function() {
      Logger.debug("test", "this is a test");

      expect(_consoleLogCalls.length).toEqual(0);
      expect(_consoleWarnCalls.length).toEqual(0);
      expect(_consoleErrorCalls.length).toEqual(0);
    });

    it("should not warn to the console", function() {
      Logger.warn("test", "this is a test");

      expect(_consoleLogCalls.length).toEqual(0);
      expect(_consoleWarnCalls.length).toEqual(0);
      expect(_consoleErrorCalls.length).toEqual(0);
    });

    it("should not error to the console", function() {
      Logger.error("test", "this is a test");

      expect(_consoleLogCalls.length).toEqual(0);
      expect(_consoleWarnCalls.length).toEqual(0);
      expect(_consoleErrorCalls.length).toEqual(0);
    });
  });

  describe("with logToConsole == true", function() {
    var _defaultLogToConsole
    beforeEach(function() {
      _defaultLogToConsole = Pusher.logToConsole;
      Pusher.logToConsole = true;
    })
    afterEach(function() {
      Pusher.logToConsole = _defaultLogToConsole;
    })

    it("should log to the console", function() {
      Logger.debug("test", "this is a test");

      expect(_consoleLogCalls.length).toEqual(1);
      expect(_consoleWarnCalls.length).toEqual(0);
      expect(_consoleErrorCalls.length).toEqual(0);
    });

    it("should warn to the console", function() {
      Logger.warn("test", "this is a test");

      expect(_consoleLogCalls.length).toEqual(0);
      expect(_consoleWarnCalls.length).toEqual(1);
      expect(_consoleErrorCalls.length).toEqual(0);
    });

    it("should error to the console", function() {
      Logger.error("test", "this is a test");

      expect(_consoleLogCalls.length).toEqual(0);
      expect(_consoleWarnCalls.length).toEqual(0);
      expect(_consoleErrorCalls.length).toEqual(1);
    });

    describe("with console.error == undefined", function() {
      beforeEach(function() {
        global.console.error = undefined;
      })

      it("should fallback error logs to warn", function() {
        Logger.error("test", "this is a test");
    
        expect(_consoleLogCalls.length).toEqual(0);
        expect(_consoleWarnCalls.length).toEqual(1);
        expect(_consoleErrorCalls.length).toEqual(0);
      });

      describe("with console.warn == undefined", function() {
        beforeEach(function() {
          global.console.warn = undefined;
        })

        it("should fallback warn logs to log", function() {
          Logger.warn("test", "this is a test");
      
          expect(_consoleLogCalls.length).toEqual(1);
          expect(_consoleWarnCalls.length).toEqual(0);
          expect(_consoleErrorCalls.length).toEqual(0);
        });

        it("should fallback error logs to log", function() {
          Logger.error("test", "this is a test");
      
          expect(_consoleLogCalls.length).toEqual(1);
          expect(_consoleWarnCalls.length).toEqual(0);
          expect(_consoleErrorCalls.length).toEqual(0);
        });
      });
    });
  });
});