import {
  ddescribe,
  describe,
  it,
  iit,
  xit,
  expect,
  beforeEach,
  afterEach,
  inject
} from '@angular/core/testing/testing_internal';

import {
  fakeAsync,
  flushMicrotasks,
  Log,
  tick,
} from '@angular/core/testing';

import {SpyNgControl, SpyValueAccessor} from '../spies';

import {
  ControlGroup,
  Control,
  NgControlName,
  NgControlGroup,
  NgFormModel,
  ControlValueAccessor,
  Validators,
  NgForm,
  NgModel,
  NgFormControl,
  NgControl,
  DefaultValueAccessor,
  CheckboxControlValueAccessor,
  SelectControlValueAccessor,
  Validator
} from '@angular/common/src/forms';


import {selectValueAccessor, composeValidators} from '@angular/common/src/forms/directives/shared';
import {TimerWrapper} from '../../src/facade/async';
import {PromiseWrapper} from '../../src/facade/promise';
import {SimpleChange} from '@angular/core/src/change_detection';

class DummyControlValueAccessor implements ControlValueAccessor {
  writtenValue;

  registerOnChange(fn) {}
  registerOnTouched(fn) {}

  writeValue(obj: any): void { this.writtenValue = obj; }
}

class CustomValidatorDirective implements Validator {
  validate(c: Control): {[key: string]: any} { return {"custom": true}; }
}

function asyncValidator(expected, timeout = 0) {
  return (c) => {
    var completer = PromiseWrapper.completer();
    var res = c.value != expected ? {"async": true} : null;
    if (timeout == 0) {
      completer.resolve(res);
    } else {
      TimerWrapper.setTimeout(() => { completer.resolve(res); }, timeout);
    }
    return completer.promise;
  };
}

export function main() {
  describe("Form Directives", () => {
    var defaultAccessor: DefaultValueAccessor;

    beforeEach(() => { defaultAccessor = new DefaultValueAccessor(null, null); });

    describe("shared", () => {
      describe("selectValueAccessor", () => {
        var dir: NgControl;

        beforeEach(() => { dir = <any>new SpyNgControl(); });

        it("should throw when given an empty array",
           () => { expect(() => selectValueAccessor(dir, [])).toThrowError(); });

        it("should return the default value accessor when no other provided",
           () => { expect(selectValueAccessor(dir, [defaultAccessor])).toEqual(defaultAccessor); });

        it("should return checkbox accessor when provided", () => {
          var checkboxAccessor = new CheckboxControlValueAccessor(null, null);
          expect(selectValueAccessor(dir, [defaultAccessor, checkboxAccessor]))
              .toEqual(checkboxAccessor);
        });

        it("should return select accessor when provided", () => {
          var selectAccessor = new SelectControlValueAccessor(null, null);
          expect(selectValueAccessor(dir, [defaultAccessor, selectAccessor]))
              .toEqual(selectAccessor);
        });

        it("should throw when more than one build-in accessor is provided", () => {
          var checkboxAccessor = new CheckboxControlValueAccessor(null, null);
          var selectAccessor = new SelectControlValueAccessor(null, null);
          expect(() => selectValueAccessor(dir, [checkboxAccessor, selectAccessor])).toThrowError();
        });

        it("should return custom accessor when provided", () => {
          var customAccessor = new SpyValueAccessor();
          var checkboxAccessor = new CheckboxControlValueAccessor(null, null);
          expect(selectValueAccessor(dir, <any>[defaultAccessor, customAccessor, checkboxAccessor]))
              .toEqual(customAccessor);
        });

        it("should throw when more than one custom accessor is provided", () => {
          var customAccessor: ControlValueAccessor = <any>new SpyValueAccessor();
          expect(() => selectValueAccessor(dir, [customAccessor, customAccessor])).toThrowError();
        });
      });

      describe("composeValidators", () => {
        it("should compose functions", () => {
          var dummy1 = (_) => ({"dummy1": true});
          var dummy2 = (_) => ({"dummy2": true});
          var v = composeValidators([dummy1, dummy2]);
          expect(v(new Control(""))).toEqual({"dummy1": true, "dummy2": true});
        });

        it("should compose validator directives", () => {
          var dummy1 = (_) => ({"dummy1": true});
          var v = composeValidators([dummy1, new CustomValidatorDirective()]);
          expect(v(new Control(""))).toEqual({"dummy1": true, "custom": true});
        });
      });
    });

    describe("NgFormModel", () => {
      var form;
      var formModel: ControlGroup;
      var loginControlDir;

      beforeEach(() => {
        form = new NgFormModel([], []);
        formModel = new ControlGroup({
          "login": new Control(),
          "passwords":
              new ControlGroup({"password": new Control(), "passwordConfirm": new Control()})
        });
        form.form = formModel;

        loginControlDir = new NgControlName(form, [Validators.required],
                                            [asyncValidator("expected")], [defaultAccessor]);
        loginControlDir.name = "login";
        loginControlDir.valueAccessor = new DummyControlValueAccessor();
      });

      it("should reexport control properties", () => {
        expect(form.control).toBe(formModel);
        expect(form.value).toBe(formModel.value);
        expect(form.valid).toBe(formModel.valid);
        expect(form.errors).toBe(formModel.errors);
        expect(form.pristine).toBe(formModel.pristine);
        expect(form.dirty).toBe(formModel.dirty);
        expect(form.touched).toBe(formModel.touched);
        expect(form.untouched).toBe(formModel.untouched);
      });

      describe("addControl", () => {
        it("should throw when no control found", () => {
          var dir = new NgControlName(form, null, null, [defaultAccessor]);
          dir.name = "invalidName";

          expect(() => form.addControl(dir))
              .toThrowError(new RegExp("Cannot find control 'invalidName'"));
        });

        it("should throw when no value accessor", () => {
          var dir = new NgControlName(form, null, null, null);
          dir.name = "login";

          expect(() => form.addControl(dir))
              .toThrowError(new RegExp("No value accessor for 'login'"));
        });

        it("should set up validators", fakeAsync(() => {
             form.addControl(loginControlDir);

             // sync validators are set
             expect(formModel.hasError("required", ["login"])).toBe(true);
             expect(formModel.hasError("async", ["login"])).toBe(false);

             (<Control>formModel.find(["login"])).updateValue("invalid value");

             // sync validator passes, running async validators
             expect(formModel.pending).toBe(true);

             tick();

             expect(formModel.hasError("required", ["login"])).toBe(false);
             expect(formModel.hasError("async", ["login"])).toBe(true);
           }));

        it("should write value to the DOM", () => {
          (<Control>formModel.find(["login"])).updateValue("initValue");

          form.addControl(loginControlDir);

          expect((<any>loginControlDir.valueAccessor).writtenValue).toEqual("initValue");
        });

        it("should add the directive to the list of directives included in the form", () => {
          form.addControl(loginControlDir);
          expect(form.directives).toEqual([loginControlDir]);
        });
      });

      describe("addControlGroup", () => {
        var matchingPasswordsValidator = (g) => {
          if (g.controls["password"].value != g.controls["passwordConfirm"].value) {
            return {"differentPasswords": true};
          } else {
            return null;
          }
        };

        it("should set up validator", fakeAsync(() => {
             var group = new NgControlGroup(form, [matchingPasswordsValidator],
                                            [asyncValidator('expected')]);
             group.name = "passwords";
             form.addControlGroup(group);

             (<Control>formModel.find(["passwords", "password"])).updateValue("somePassword");
             (<Control>formModel.find(["passwords", "passwordConfirm"]))
                 .updateValue("someOtherPassword");

             // sync validators are set
             expect(formModel.hasError("differentPasswords", ["passwords"])).toEqual(true);

             (<Control>formModel.find(["passwords", "passwordConfirm"]))
                 .updateValue("somePassword");

             // sync validators pass, running async validators
             expect(formModel.pending).toBe(true);

             tick();

             expect(formModel.hasError("async", ["passwords"])).toBe(true);
           }));
      });

      describe("removeControl", () => {
        it("should remove the directive to the list of directives included in the form", () => {
          form.addControl(loginControlDir);
          form.removeControl(loginControlDir);
          expect(form.directives).toEqual([]);
        });
      });

      describe("ngOnChanges", () => {
        it("should update dom values of all the directives", () => {
          form.addControl(loginControlDir);

          (<Control>formModel.find(["login"])).updateValue("new value");

          form.ngOnChanges({});

          expect((<any>loginControlDir.valueAccessor).writtenValue).toEqual("new value");
        });

        it("should set up a sync validator", () => {
          var formValidator = (c) => ({"custom": true});
          var f = new NgFormModel([formValidator], []);
          f.form = formModel;
          f.ngOnChanges({"form": new SimpleChange(null, null)});

          expect(formModel.errors).toEqual({"custom": true});
        });

        it("should set up an async validator", fakeAsync(() => {
             var f = new NgFormModel([], [asyncValidator("expected")]);
             f.form = formModel;
             f.ngOnChanges({"form": new SimpleChange(null, null)});

             tick();

             expect(formModel.errors).toEqual({"async": true});
           }));
      });
    });

    describe("NgForm", () => {
      var form;
      var formModel: ControlGroup;
      var loginControlDir;
      var personControlGroupDir;

      beforeEach(() => {
        form = new NgForm([], []);
        formModel = form.form;

        personControlGroupDir = new NgControlGroup(form, [], []);
        personControlGroupDir.name = "person";

        loginControlDir = new NgControlName(personControlGroupDir, null, null, [defaultAccessor]);
        loginControlDir.name = "login";
        loginControlDir.valueAccessor = new DummyControlValueAccessor();
      });

      it("should reexport control properties", () => {
        expect(form.control).toBe(formModel);
        expect(form.value).toBe(formModel.value);
        expect(form.valid).toBe(formModel.valid);
        expect(form.errors).toBe(formModel.errors);
        expect(form.pristine).toBe(formModel.pristine);
        expect(form.dirty).toBe(formModel.dirty);
        expect(form.touched).toBe(formModel.touched);
        expect(form.untouched).toBe(formModel.untouched);
      });

      describe("addControl & addControlGroup", () => {
        it("should create a control with the given name", fakeAsync(() => {
             form.addControlGroup(personControlGroupDir);
             form.addControl(loginControlDir);

             flushMicrotasks();

             expect(formModel.find(["person", "login"])).not.toBeNull;
           }));

        // should update the form's value and validity
      });

      describe("removeControl & removeControlGroup", () => {
        it("should remove control", fakeAsync(() => {
             form.addControlGroup(personControlGroupDir);
             form.addControl(loginControlDir);

             form.removeControlGroup(personControlGroupDir);
             form.removeControl(loginControlDir);

             flushMicrotasks();

             expect(formModel.find(["person"])).toBeNull();
             expect(formModel.find(["person", "login"])).toBeNull();
           }));

        // should update the form's value and validity
      });

      it("should set up sync validator", fakeAsync(() => {
           var formValidator = (c) => ({"custom": true});
           var f = new NgForm([formValidator], []);

           tick();

           expect(f.form.errors).toEqual({"custom": true});
         }));

      it("should set up async validator", fakeAsync(() => {
           var f = new NgForm([], [asyncValidator("expected")]);

           tick();

           expect(f.form.errors).toEqual({"async": true});
         }));
    });

    describe("NgControlGroup", () => {
      var formModel;
      var controlGroupDir;

      beforeEach(() => {
        formModel = new ControlGroup({"login": new Control(null)});

        var parent = new NgFormModel([], []);
        parent.form = new ControlGroup({"group": formModel});
        controlGroupDir = new NgControlGroup(parent, [], []);
        controlGroupDir.name = "group";
      });

      it("should reexport control properties", () => {
        expect(controlGroupDir.control).toBe(formModel);
        expect(controlGroupDir.value).toBe(formModel.value);
        expect(controlGroupDir.valid).toBe(formModel.valid);
        expect(controlGroupDir.errors).toBe(formModel.errors);
        expect(controlGroupDir.pristine).toBe(formModel.pristine);
        expect(controlGroupDir.dirty).toBe(formModel.dirty);
        expect(controlGroupDir.touched).toBe(formModel.touched);
        expect(controlGroupDir.untouched).toBe(formModel.untouched);
      });
    });

    describe("NgFormControl", () => {
      var controlDir;
      var control;
      var checkProperties = function(control) {
        expect(controlDir.control).toBe(control);
        expect(controlDir.value).toBe(control.value);
        expect(controlDir.valid).toBe(control.valid);
        expect(controlDir.errors).toBe(control.errors);
        expect(controlDir.pristine).toBe(control.pristine);
        expect(controlDir.dirty).toBe(control.dirty);
        expect(controlDir.touched).toBe(control.touched);
        expect(controlDir.untouched).toBe(control.untouched);
      };

      beforeEach(() => {
        controlDir = new NgFormControl([Validators.required], [], [defaultAccessor]);
        controlDir.valueAccessor = new DummyControlValueAccessor();

        control = new Control(null);
        controlDir.form = control;
      });

      it("should reexport control properties", () => { checkProperties(control); });

      it("should reexport new control properties", () => {
        var newControl = new Control(null);
        controlDir.form = newControl;
        controlDir.ngOnChanges({"form": new SimpleChange(control, newControl)});

        checkProperties(newControl);
      });

      it("should set up validator", () => {
        expect(control.valid).toBe(true);

        // this will add the required validator and recalculate the validity
        controlDir.ngOnChanges({"form": new SimpleChange(null, control)});

        expect(control.valid).toBe(false);
      });
    });

    describe("NgModel", () => {
      var ngModel;

      beforeEach(() => {
        ngModel =
            new NgModel([Validators.required], [asyncValidator("expected")], [defaultAccessor]);
        ngModel.valueAccessor = new DummyControlValueAccessor();
      });

      it("should reexport control properties", () => {
        var control = ngModel.control;
        expect(ngModel.control).toBe(control);
        expect(ngModel.value).toBe(control.value);
        expect(ngModel.valid).toBe(control.valid);
        expect(ngModel.errors).toBe(control.errors);
        expect(ngModel.pristine).toBe(control.pristine);
        expect(ngModel.dirty).toBe(control.dirty);
        expect(ngModel.touched).toBe(control.touched);
        expect(ngModel.untouched).toBe(control.untouched);
      });

      it("should set up validator", fakeAsync(() => {
           // this will add the required validator and recalculate the validity
           ngModel.ngOnChanges({});
           tick();

           expect(ngModel.control.errors).toEqual({"required": true});

           ngModel.control.updateValue("someValue");
           tick();

           expect(ngModel.control.errors).toEqual({"async": true});
         }));
    });

    describe("NgControlName", () => {
      var formModel;
      var controlNameDir;

      beforeEach(() => {
        formModel = new Control("name");

        var parent = new NgFormModel([], []);
        parent.form = new ControlGroup({"name": formModel});
        controlNameDir = new NgControlName(parent, [], [], [defaultAccessor]);
        controlNameDir.name = "name";
      });

      it("should reexport control properties", () => {
        expect(controlNameDir.control).toBe(formModel);
        expect(controlNameDir.value).toBe(formModel.value);
        expect(controlNameDir.valid).toBe(formModel.valid);
        expect(controlNameDir.errors).toBe(formModel.errors);
        expect(controlNameDir.pristine).toBe(formModel.pristine);
        expect(controlNameDir.dirty).toBe(formModel.dirty);
        expect(controlNameDir.touched).toBe(formModel.touched);
        expect(controlNameDir.untouched).toBe(formModel.untouched);
      });
    });
  });
}