import { Application, IComponent, events } from '../lib/index';
import * as should from 'should';
import { MockPlugin } from './mock-plugin/components/mockPlugin';
import { MockEvent } from './mock-plugin/events/mockEvent';


declare var afterEach: any;
let WAIT_TIME = 1000;
let mockBase = process.cwd() + '/test';

let app = new Application();

describe('application test', function () {
  afterEach(function () {
    app.state = 0;
    app.settings = {};
  });

  describe('#init', function () {
    it('should init the app instance', function () {
      app.init({ base: mockBase });
      app.state.should.equal(1);  // magic number from application.js
    });
  });

  describe('#set and get', function () {
    it('should play the role of normal set and get', function () {
      should.not.exist(app.get('some undefined key'));

      let key = 'some defined key', value = 'some value';
      app.set(key, value);
      value.should.equal(app.get(key));
    });

    it('should return the value if pass just one parameter to the set method', function () {
      let key = 'some defined key', value = 'some value';
      should.not.exist(app.get(key));
      app.set(key, value);
      value.should.equal(app.get(key));
    });
  });

  describe('#enable and disable', function () {
    it('should play the role of enable and disable', function () {
      let key = 'some enable key';
      app.enabled(key).should.be.false;
      app.disabled(key).should.be.true;

      app.enable(key);
      app.enabled(key).should.be.true;
      app.disabled(key).should.be.false;

      app.disable(key);
      app.enabled(key).should.be.false;
      app.disabled(key).should.be.true;
    });
  });

  describe('#compoent', function () {
    it('should load the component and fire their lifecircle callback by app.start, app.afterStart, app.stop', function (done: Mocha.Done) {
      let startCount = 0, afterStartCount = 0, stopCount = 0;
      if(require('os').platform() === 'linux') {
          done();
          return;
      }
      this.timeout(8000)
      let mockComponent = {
        name : 'mockComponent',
        start: function (cb: Function) {
          console.log('start invoked');
          startCount++;
          cb();
        },

        afterStart: function (cb: Function) {
          console.log('afterStart invoked');
          afterStartCount++;
          cb();
        },

        stop: function (force: any, cb: Function) {
          console.log('stop invoked');
          stopCount++;
          cb();
        }
      };

      app.init({ base: mockBase });
      app.components.__monitor__ = { monitor: null, name: 'mockMonitor', start: () => {}, stop: () => {}, reconnect: () => {} };
      app.load(mockComponent);
      app.start(function (err: Error) {
        should.not.exist(err);
      });

      setTimeout(function () {
        // wait for after start
        app.stop(false);

        setTimeout(function () {
          // wait for stop
          startCount.should.equal(1);
          afterStartCount.should.equal(1);
          stopCount.should.equal(1);
          done();
        }, WAIT_TIME);
      }, WAIT_TIME);
    });

    it('should access the component with a name by app.components.name after loaded', function () {
      let key1 = 'key1', comp1 = new class implements IComponent { name: 'comp1'; content: 'some thing in comp1'; };
      let comp2 = { name: 'key2', content: 'some thing in comp2' };
      let key3 = 'key3';
      let comp3 = function () {
        return { content: 'some thing in comp3', name: key3 };
      };

      app.init({ base: mockBase });
      app.load(key1, comp1);
      app.load(comp2);
      app.load(comp3);

      app.components.key1.should.eql(comp1);
      app.components.key2.should.eql(comp2);
      app.components.key3.should.eql(comp3());
    });

    it('should ignore duplicated components', function () {
      let key = 'key';
      let comp1 = new class implements IComponent { name: 'comp1';  content: 'some thing in comp1'; };
      let comp2 = new class implements IComponent { name: 'comp2';  content: 'some thing in comp2'; };

      app.init({ base: mockBase });
      app.load(key, comp1);
      app.load(key, comp2);

      app.components[key].should.equal(comp1);
      app.components[key].should.not.equal(comp2);
    });
  });

  describe('#filter', function () {
    it('should add before filter and could fetch it later', function () {
      let filters = [
        function () { console.error('filter1'); },
        function () { }
      ];

      app.init({ base: mockBase });

      let i, l;
      for (i = 0, l = filters.length; i < l; i++) {
        app.before(filters[i]);
      }

      let filters2 = app.get('__befores__');
      should.exist(filters2);
      filters2.length.should.equal(filters.length);
      for (i = 0, l = filters2.length; i < l; i++) {
        filters2[i].should.equal(filters[i]);
      }
    });

    it('should add after filter and could fetch it later', function () {
      let filters = [
        function () { console.error('filter1'); },
        function () { }
      ];

      app.init({ base: mockBase });

      let i, l;
      for (i = 0, l = filters.length; i < l; i++) {
        app.after(filters[i]);
      }

      let filters2 = app.get('__afters__');
      should.exist(filters2);
      filters2.length.should.equal(filters.length);
      for (i = 0, l = filters2.length; i < l; i++) {
        filters2[i].should.equal(filters[i]);
      }
    });

    it('should add filter and could fetch it from before and after filter later', function () {
      let filters = [
        function () { console.error('filter1'); },
        function () { }
      ];

      app.init({ base: mockBase });

      let i, l;
      for (i = 0, l = filters.length; i < l; i++) {
        app.before(filters[i]);
        app.after(filters[i]);
      }

      let filters2 = app.get('__befores__');
      should.exist(filters2);
      filters2.length.should.equal(filters.length);
      for (i = 0, l = filters2.length; i < l; i++) {
        filters2[i].should.equal(filters[i]);
      }

      let filters3 = app.get('__afters__');
      should.exist(filters3);
      filters3.length.should.equal(filters.length);
      for (i = 0, l = filters3.length; i < l; i++) {
        filters2[i].should.equal(filters[i]);
      }
    });
  });

  describe('#globalFilter', function () {
    it('should add before global filter and could fetch it later', function () {
      let filters = [
        function () { console.error('global filter1'); },
        function () { }
      ];

      app.init({ base: mockBase });

      let i, l;
      for (i = 0, l = filters.length; i < l; i++) {
        app.globalBefore(filters[i]);
      }

      let filters2 = app.get('__globalBefores__');
      should.exist(filters2);
      filters2.length.should.equal(filters.length);
      for (i = 0, l = filters2.length; i < l; i++) {
        filters2[i].should.equal(filters[i]);
      }
    });

    it('should add after global filter and could fetch it later', function () {
      let filters = [
        function () { console.error('filter1'); },
        function () { }
      ];

      app.init({ base: mockBase });

      let i, l;
      for (i = 0, l = filters.length; i < l; i++) {
        app.globalAfter(filters[i]);
      }

      let filters2 = app.get('__globalAfters__');
      should.exist(filters2);
      filters2.length.should.equal(filters.length);
      for (i = 0, l = filters2.length; i < l; i++) {
        filters2[i].should.equal(filters[i]);
      }
    });

    it('should add filter and could fetch it from before and after filter later', function () {
      let filters = [
        function () { console.error('filter1'); },
        function () { }
      ];

      app.init({ base: mockBase });

      let i, l;
      for (i = 0, l = filters.length; i < l; i++) {
        app.globalBefore(filters[i]);
        app.globalAfter(filters[i]);
      }

      let filters2 = app.get('__globalBefores__');
      should.exist(filters2);
      filters2.length.should.equal(filters.length);
      for (i = 0, l = filters2.length; i < l; i++) {
        filters2[i].should.equal(filters[i]);
      }

      let filters3 = app.get('__globalAfters__');
      should.exist(filters3);
      filters3.length.should.equal(filters.length);
      for (i = 0, l = filters3.length; i < l; i++) {
        filters2[i].should.equal(filters[i]);
      }
    });
  });

  describe('#configure', function () {
    it('should execute the code block wtih the right environment', function () {
      let proCount = 0, devCount = 0;
      let proEnv = 'production', devEnv = 'development', serverType = 'server';

      app.init({ base: mockBase });
      app.set('serverType', serverType);
      app.set('env', proEnv);

      app.configure(proEnv, serverType, function () {
        proCount++;
      });

      app.configure(devEnv, serverType, function () {
        devCount++;
      });

      app.set('env', devEnv);

      app.configure(proEnv, serverType, function () {
        proCount++;
      });

      app.configure(devEnv, serverType, function () {
        devCount++;
      });

      proCount.should.equal(1);
      devCount.should.equal(1);
    });

    it('should execute the code block wtih the right server', function () {
      let server1Count = 0, server2Count = 0;
      let proEnv = 'production', serverType1 = 'server1', serverType2 = 'server2';

      app.init({ base: mockBase });
      app.set('serverType', serverType1);
      app.set('env', proEnv);

      app.configure(proEnv, serverType1, function () {
        server1Count++;
      });

      app.configure(proEnv, serverType2, function () {
        server2Count++;
      });

      app.set('serverType', serverType2);

      app.configure(proEnv, serverType1, function () {
        server1Count++;
      });

      app.configure(proEnv, serverType2, function () {
        server2Count++;
      });

      server1Count.should.equal(1);
      server2Count.should.equal(1);
    });
  });

  describe('#route', function () {
    it('should add route record and could fetch it later', function () {
      let type1 = 'area', type2 = 'connector';
      let func1 = function () { console.log('func1'); };
      let func2 = function () { console.log('func2'); };

      app.init({ base: mockBase });

      app.route(type1, func1);
      app.route(type2, func2);

      let routes = app.get('__routes__');
      should.exist(routes);
      func1.should.equal(routes[type1]);
      func2.should.equal(routes[type2]);
    });
  });

  describe('#transaction', function () {
    it('should execute all conditions and handlers', function () {
      let conditions = {
        test1: function (cb: Function) {
          console.log('condition1');
          cb();
        },
        test2: function (cb: Function) {
          console.log('condition2');
          cb();
        }
      };
      let flag = 1;
      let handlers = {
        do1: function (cb: Function) {
          console.log('handler1');
          cb();
        },
        do2: function (cb: Function) {
          console.log('handler2');
          if (flag < 3) {
            flag++;
            cb(new Error('error'));
          } else {
            cb();
          }
        }
      };
      app.transaction('test', conditions, handlers, 5);
    });

    it('shoud execute conditions with error and do not execute handlers', function () {
      let conditions = {
        test1: function (cb: Function) {
          console.log('condition1');
          cb();
        },
        test2: function (cb: Function) {
          console.log('condition2');
          cb(new Error('error'));
        },
        test3: function (cb: Function) {
          console.log('condition3');
          cb();
        }
      };
      let handlers = {
        do1: function (cb: Function) {
          console.log('handler1');
          cb();
        },
        do2: function (cb: Function) {
          console.log('handler2');
          cb();
        }
      };
      app.transaction('test', conditions, handlers);
    });
  });

  describe('#add and remove servers', function () {
    it('should add servers and emit event and fetch the new server info by get methods', function (done: Mocha.Done) {
      let newServers = [
        { id: 'connector-server-1', serverType: 'connecctor', host: '127.0.0.1', port: 1234, clientPort: 3000, frontend: true },
        { id: 'area-server-1', serverType: 'area', host: '127.0.0.1', port: 2234 }
      ];
      app.init({ base: mockBase });
      app.event.on(events.ADD_SERVERS, function (servers: Array<{ [key: string]: any }>) {
        // check event args
        newServers.should.eql(servers);

        // check servers
        let curServers = app.getServers();
        should.exist(curServers);
        let item, i, l;
        for (i = 0, l = newServers.length; i < l; i++) {
          item = newServers[i];
          item.should.eql(curServers[item.id]);
        }

        // check get server by id
        for (i = 0, l = newServers.length; i < l; i++) {
          item = newServers[i];
          item.should.eql(app.getServerById(item.id));
        }

        // check server types
        let types = [];
        for (i = 0, l = newServers.length; i < l; i++) {
          item = newServers[i];
          if (types.indexOf(item.serverType) < 0) {
            types.push(item.serverType);
          }
        }
        let types2 = app.getServerTypes();
        types.length.should.equal(types2.length);
        for (i = 0, l = types.length; i < l; i++) {
          types2.should.containEql(types[i]);
        }

        // check server type list
        let slist;
        for (i = 0, l = newServers.length; i < l; i++) {
          item = newServers[i];
          slist = app.getServersByType(item.serverType);
          should.exist(slist);
          contains(slist, item).should.be.true;
        }

        done();
      });

      app.addServers(newServers);
      app.event.removeAllListeners()
    });

    it('should remove server info and emit event', function (done: Mocha.Done) {
      let newServers = [
        { id: 'connector-server-1', serverType: 'connecctor', host: '127.0.0.1', port: 1234, clientPort: 3000, frontend: true },
        { id: 'area-server-1', serverType: 'area', host: '127.0.0.1', port: 2234 },
        { id: 'path-server-1', serverType: 'path', host: '127.0.0.1', port: 2235 }
      ];
      let destServers = [
        { id: 'connector-server-1', serverType: 'connecctor', host: '127.0.0.1', port: 1234, clientPort: 3000, frontend: true },
        { id: 'path-server-1', serverType: 'path', host: '127.0.0.1', port: 2235 }
      ];
      let delIds = ['area-server-1'];
      let addCount = 0;
      let delCount = 0;

      app.init({ base: mockBase });
      app.event.on(events.ADD_SERVERS, function (servers: Array<{ [key: string]: any }>) {
        // check event args
        newServers.should.eql(servers);
        addCount++;
      });

      app.event.on(events.REMOVE_SERVERS, function (ids: Array<string>) {
        delIds.should.eql(ids);

        // check servers
        let curServers = app.getServers();
        should.exist(curServers);
        let item, i, l;
        for (i = 0, l = destServers.length; i < l; i++) {
          item = destServers[i];
          item.should.eql(curServers[item.id]);
        }

        // check get server by id
        for (i = 0, l = destServers.length; i < l; i++) {
          item = destServers[i];
          item.should.eql(app.getServerById(item.id));
        }

        // check server types
        // NOTICE: server types would not clear when remove server from app
        let types = [];
        for (i = 0, l = newServers.length; i < l; i++) {
          item = newServers[i];
          if (types.indexOf(item.serverType) < 0) {
            types.push(item.serverType);
          }
        }
        let types2 = app.getServerTypes();
        types.length.should.equal(types2.length);
        for (i = 0, l = types.length; i < l; i++) {
          types2.should.containEql(types[i]);
        }

        // check server type list
        let slist;
        for (i = 0, l = destServers.length; i < l; i++) {
          item = destServers[i];
          slist = app.getServersByType(item.serverType);
          should.exist(slist);
          contains(slist, item).should.be.true;
        }
        app.event.removeAllListeners()
        done();
      });

      app.addServers(newServers);
      app.removeServers(delIds);

    });
  });

  describe('#beforeStopHook', function () {
    it('should be called before application stopped.', function (done: Mocha.Done) {
      if(require('os').platform() === 'linux') {
        done();
        return;
      }
      let count = 0;
      this.timeout(8888)
      app.init({ base: mockBase });
      app.components.__monitor__ = { monitor: null, name: 'mockMonitor', start: () => {}, stop: () => {}, reconnect: () => {} };
      app.beforeStopHook(function () {
        count++;
      });
      app.start(function (err: Error) {
        should.not.exist(err);
      });

      setTimeout(function () {
        // wait for after start
        app.stop(false);

        setTimeout(function () {
          // wait for stop
          count.should.equal(1);
          done();
        }, WAIT_TIME);
      }, WAIT_TIME);
    });
  });
  describe('#use', function () {
    it('should exist plugin component and event', function (done: Mocha.Done) {
      let plugin = {
        name: 'mock-plugin',
        components: [MockPlugin],
        events: [MockEvent]
      };
      let opts = {};
      app.use(plugin, opts);
      should.exist(app.event.listeners('bind_session'));
      should.exist(app.components.mockPlugin);
      done();
    });
  });
});

let contains = function (slist: Array<{ [key: string]: any }>, sinfo: { [key: string]: any }) {
  for (let i = 0, l = slist.length; i < l; i++) {
    if (slist[i].id === sinfo.id) {
      return true;
    }
  }
  return false;
};