'use strict';

var TestHelper = require('../../../TestHelper');

/* global bootstrapModeler, inject, sinon */

var bpmnCopyPasteModule = require('../../../../lib/features/copy-paste'),
    copyPasteModule = require('diagram-js/lib/features/copy-paste'),
    tooltipsModule = require('diagram-js/lib/features/tooltips'),
    modelingModule = require('../../../../lib/features/modeling'),
    coreModule = require('../../../../lib/core');

var map = require('lodash/collection/map'),
    forEach = require('lodash/collection/forEach');

var DescriptorTree = require('./DescriptorTree');


describe('features/copy-paste', function() {

  var testModules = [ bpmnCopyPasteModule, copyPasteModule, tooltipsModule, modelingModule, coreModule ];

  var basicXML = require('../../../fixtures/bpmn/features/copy-paste/basic.bpmn'),
      collaborationXML = require('../../../fixtures/bpmn/features/copy-paste/collaboration.bpmn'),
      collaborationMultipleXML = require('../../../fixtures/bpmn/features/copy-paste/collaboration-multiple.bpmn'),
      collaborationAssociations = require('../../../fixtures/bpmn/features/copy-paste/data-associations.bpmn');


  function integrationTest(ids) {
    return function(canvas, elementRegistry, modeling, copyPaste, commandStack) {
      // given
      var shapes = elementRegistry.getAll(),
          rootElement;

      var initialContext = {
            type: mapProperty(shapes, 'type'),
            ids: mapProperty(shapes, 'id'),
            length: shapes.length
          },
          currentContext;

      var elements = map(ids, function(id) {
        return elementRegistry.get(id);
      });

      copyPaste.copy(elements);

      modeling.removeElements(elements);

      rootElement = canvas.getRootElement();

      copyPaste.paste({
        element: rootElement,
        point: {
          x: 1100,
          y: 250
        }
      });

      elements = elementRegistry.getAll();

      // remove root
      elements = elementRegistry.filter(function(element) {
        return !!element.parent;
      });

      modeling.moveElements(elements, { x: 50, y: -50 });

      // when
      commandStack.undo();
      commandStack.undo();
      commandStack.undo();

      elements = elementRegistry.getAll();

      currentContext = {
        type: mapProperty(elements, 'type'),
        ids: mapProperty(elements, 'id'),
        length: elements.length
      };

      // then
      expect(initialContext).to.have.length(currentContext.length);

      expectCollection(initialContext.ids, currentContext.ids, true);

      // when
      commandStack.redo();
      commandStack.redo();
      commandStack.redo();

      elements = elementRegistry.getAll();

      currentContext = {
        type: mapProperty(elements, 'type'),
        ids: mapProperty(elements, 'id'),
        length: elements.length
      };

      // then
      expect(initialContext).to.have.length(currentContext.length);

      expectCollection(initialContext.type, currentContext.type, true);
      expectCollection(initialContext.ids, currentContext.ids, false);
    };
  }


  describe('basic diagram', function() {

    beforeEach(bootstrapModeler(basicXML, { modules: testModules }));

    describe('copy', function() {

      it('selected elements', inject(function(elementRegistry, copyPaste) {

        // given
        var subProcess,
            startEvent,
            boundaryEvent,
            textAnnotation,
            conditionalFlow,
            defaultFlow;

        // when
        var tree = copy([ 'SubProcess_1kd6ist' ]);

        startEvent = tree.getElement('StartEvent_1');
        boundaryEvent = tree.getElement('BoundaryEvent_1c94bi9');
        subProcess = tree.getElement('SubProcess_1kd6ist');
        textAnnotation = tree.getElement('TextAnnotation_0h1hhgg');
        conditionalFlow = tree.getElement('SequenceFlow_07vo2r8');
        defaultFlow = tree.getElement('Task_1fo63a7');

        // then
        expect(tree.getLength()).to.equal(3);

        expect(tree.getDepthLength(0)).to.equal(1);
        expect(tree.getDepthLength(1)).to.equal(3);
        expect(tree.getDepthLength(2)).to.equal(15);

        expect(subProcess.isExpanded).to.be.true;
        expect(startEvent.name).to.equal('hello');
        expect(textAnnotation.text).to.equal('foo');
        expect(boundaryEvent.eventDefinitions).to.contain('bpmn:TimerEventDefinition');
      }));

    });


    describe('integration', function() {

      it('should retain label\'s relative position',
        inject(function(modeling, copyPaste, canvas, elementRegistry) {
        // given
        var startEvent = elementRegistry.get('StartEvent_1'),
            startEventLabel = startEvent.label,
            seqFlow = elementRegistry.get('SequenceFlow_1rtr33r'),
            seqFlowLabel = seqFlow.label,
            task = elementRegistry.get('Task_1fo63a7'),
            rootElement = canvas.getRootElement(),
            newStrtEvt, newSeqFlow;

        // when
        copyPaste.copy([ startEvent, task ]);

        copyPaste.paste({
          element: rootElement,
          point: {
            x: 1100,
            y: 250
          }
        });

        newStrtEvt = elementRegistry.filter(function(element) {
          return element.parent === rootElement && element.type === 'bpmn:StartEvent';
        })[0];

        newSeqFlow = elementRegistry.filter(function(element) {
          return element.parent === rootElement && element.type === 'bpmn:SequenceFlow';
        })[0];

        // then
        expect(newStrtEvt.label.x - newStrtEvt.x).to.equal(startEventLabel.x - startEvent.x);
        expect(newStrtEvt.label.y - newStrtEvt.y).to.equal(startEventLabel.y - startEvent.y);

        expect(newSeqFlow.label.x - newSeqFlow.waypoints[0].x).to.equal(seqFlowLabel.x - seqFlow.waypoints[0].x);
        expect(newSeqFlow.label.y - newSeqFlow.waypoints[0].y).to.equal(seqFlowLabel.y - seqFlow.waypoints[0].y);
      }));


      it('should retain default & conditional flow property',
        inject(function(elementRegistry, copyPaste, canvas, modeling) {
        // given
        var subProcess = elementRegistry.get('SubProcess_1kd6ist'),
            rootElement = canvas.getRootElement(),
            task, defaultFlow, conditionalFlow;

        // when
        copyPaste.copy(subProcess);

        modeling.removeElements([ subProcess ]);

        copyPaste.paste({
          element: rootElement,
          point: {
            x: 1100,
            y: 250
          }
        });

        task = elementRegistry.filter(function(element) {
          return element.type === 'bpmn:Task';
        })[0];

        defaultFlow = elementRegistry.filter(function(element) {
          return !!(element.type === 'bpmn:SequenceFlow' && task.businessObject.default.id === element.id);
        })[0];

        conditionalFlow = elementRegistry.filter(function(element) {
          return !!(element.type === 'bpmn:SequenceFlow' && element.businessObject.conditionExpression);
        })[0];

        expect(defaultFlow).to.exist;
        expect(conditionalFlow).to.exist;
      }));


      it('should retain loop characteristics',
        inject(function(elementRegistry, copyPaste, canvas, modeling) {
        // given
        var subProcess = elementRegistry.get('SubProcess_0gev7mx'),
            rootElement = canvas.getRootElement(),
            loopCharacteristics;

        // when
        copyPaste.copy(subProcess);

        modeling.removeElements([ subProcess ]);

        copyPaste.paste({
          element: rootElement,
          point: {
            x: 1100,
            y: 250
          }
        });

        subProcess = elementRegistry.filter(function(element) {
          return !!(element.id !== 'SubProcess_1kd6ist' && element.type === 'bpmn:SubProcess');
        })[0];

        loopCharacteristics = subProcess.businessObject.loopCharacteristics;

        expect(loopCharacteristics.$type).to.equal('bpmn:MultiInstanceLoopCharacteristics');
        expect(loopCharacteristics.isSequential).to.be.true;
      }));


      it('selected elements', inject(integrationTest([ 'SubProcess_1kd6ist' ])));

    });


    describe('rules', function() {

      it('disallow individual boundary events copying', inject(function(copyPaste, elementRegistry, canvas) {

        var boundaryEventA = elementRegistry.get('BoundaryEvent_1404oxd'),
            boundaryEventB = elementRegistry.get('BoundaryEvent_1c94bi9');

        // when
        var tree = copy([ boundaryEventA, boundaryEventB ]);

        expect(tree.getLength()).to.equal(0);
      }));
    });

  });


  describe('basic collaboration', function() {

    beforeEach(bootstrapModeler(collaborationXML, { modules: testModules }));

    describe('integration', function() {

      it('participant with including lanes + elements', inject(integrationTest([ 'Participant_0uu1rvj' ])));

      it('collapsed pool', inject(integrationTest([ 'Participant_145muai' ])));

    });


    describe('rules', function () {

      it('disallow individual lanes copying', inject(function(copyPaste, elementRegistry, canvas) {

        // when
        var tree = copy([ 'Lane_13h648l', 'Lane_1gl63sa' ]);

        // then
        expect(tree.getLength()).to.equal(0);
      }));


      it('pasting on a collaboration is disallowed when NOT every element is a Participant',
        inject(function(copyPaste, elementRegistry, canvas, tooltips, eventBus) {

        var collaboration = canvas.getRootElement();

        var pasteRejected = sinon.spy(function() {});

        // when
        var tree = copy([ 'Task_13xbgyg', 'Participant_145muai' ]);

        // then
        expect(tree.getDepthLength(0)).to.equal(2);

        // when
        eventBus.on('elements.paste.rejected', pasteRejected);

        copyPaste.paste({
          element: collaboration,
          point: {
            x: 1000,
            y: 1000
          }
        });

        expect(pasteRejected).to.have.been.called;
      }));


      it('pasting participants on a process is disallowed when it\'s not a collaboration',
        inject(function(copyPaste, elementRegistry, canvas, tooltips, eventBus, modeling, elementFactory) {

        var participant = elementRegistry.get('Participant_145muai'),
            otherParticipant = elementRegistry.get('Participant_0uu1rvj'),
            startEvent = elementFactory.create('shape', { type: 'bpmn:StartEvent' }),
            rootElement;

        var pasteRejected = sinon.spy(function() {});

        // when
        copyPaste.copy([ participant ]);

        modeling.removeElements([ participant, otherParticipant ]);

        rootElement = canvas.getRootElement();

        modeling.createShape(startEvent, { x: 50, y: 50 }, rootElement);

        eventBus.on('elements.paste.rejected', pasteRejected);

        copyPaste.paste({
          element: rootElement,
          point: {
            x: 500,
            y: 200
          }
        });

        expect(pasteRejected).to.have.been.called;
      }));

    });

  });


  describe('complex collaboration', function() {

    beforeEach(bootstrapModeler(collaborationMultipleXML, { modules: testModules }));

    describe('basics', function() {

      it('pasting on a lane', inject(function(elementRegistry, copyPaste) {
        // given
        var lane = elementRegistry.get('Lane_0aws6ii'),
            task = elementRegistry.get('Task_1pamrp2'),
            participant = elementRegistry.get('Participant_1id96b4');

        // when
        copyPaste.copy([ task ]);

        copyPaste.paste({
          element: lane,
          point: {
            x: 400,
            y: 450
          }
        });

        // then
        expect(lane.children).to.be.empty;
        expect(lane.businessObject.flowNodeRef).to.have.length(2);

        expect(participant.children).to.have.length(10);
      }));


      it('pasting on a nested lane', inject(function(elementRegistry, copyPaste) {
        // given
        var lane = elementRegistry.get('Lane_1yo0kyz'),
            task = elementRegistry.get('Task_0n0k2nj'),
            participant = elementRegistry.get('Participant_0pgdgt4');

        // when
        copyPaste.copy([ task ]);

        copyPaste.paste({
          element: lane,
          point: {
            x: 200,
            y: 75
          }
        });

        // then
        expect(lane.children).to.be.empty;
        expect(lane.businessObject.flowNodeRef).to.have.length(2);

        expect(lane.parent.children).to.have.length(2);
        expect(participant.children).to.have.length(5);
      }));

    });


    describe('integration', function() {

      it('multiple participants', inject(integrationTest([ 'Participant_0pgdgt4', 'Participant_1id96b4' ])));

    });

  });


  describe('data associations', function() {

    beforeEach(bootstrapModeler(collaborationAssociations, { modules: testModules }));


    describe('integration', function() {

      it('participant with OutputDataAssociation', inject(integrationTest([ 'Participant_Output' ])));

      it('participant with InputDataAssociation', inject(integrationTest([ 'Participant_Input' ])));

    });

  });

});


/**
 * Copy elements (or elements with given ids).
 *
 * @param {Array<String|djs.model.Base} ids
 *
 * @return {DescriptorTree}
 */
function copy(ids) {

  return TestHelper.getBpmnJS().invoke(function(copyPaste, elementRegistry) {

    var elements = ids.map(function(e) {
      var element = elementRegistry.get(e.id || e);

      expect(element).to.exist;

      return element;
    });

    var copyResult = copyPaste.copy(elements);

    return new DescriptorTree(copyResult);
  });
}

function mapProperty(shapes, prop) {
  return map(shapes, function(shape) {
    return shape[prop];
  });
}

function expectCollection(collA, collB, contains) {
  expect(collA).to.have.length(collB.length);

  forEach(collB, function(element) {
    if (!element.parent) {
      return;
    }

    if (contains) {
      expect(collA).to.contain(element);
    } else {
      expect(collA).to.not.contain(element);
    }
  });
}