import { IServiceLocator, newInstanceForScope, resolve } from '@aurelia/kernel';
import { Aurelia, CustomElement, IPlatform, customElement } from '@aurelia/runtime-html';
import { assert, TestContext } from '@aurelia/testing';
import {
  IValidationRules,
  PropertyRule,
  ValidateInstruction,
} from '@aurelia/validation';
import {
  ControllerValidateResult,
  IValidationController,
  ValidationController,
  ValidationResultsSubscriber,
  ValidationEvent,
  ValidationHtmlConfiguration,
} from '@aurelia/validation-html';
import { createSpecFunction, TestExecutionContext, TestFunction, ToNumberValueConverter } from '../util.js';
import { Person } from '../validation/_test-resources.js';

describe('validation-html/validation-controller.spec.ts', function () {
  describe('validation-html/validation-controller.spec.ts/validation controller factory', function () {
    @customElement({
      name: 'app',
      template: `<vc-root></vc-root>`
    })
    class App { }
    @customElement({
      name: 'vc-root',
      template: `
    <custom-stuff1></custom-stuff1>
    <custom-stuff2></custom-stuff2>
    <new-vc-root></new-vc-root>
    `
    })
    class VcRoot {
      public readonly controller1: ValidationController = resolve(newInstanceForScope(IValidationController)) as ValidationController;
      public readonly controller2: ValidationController = resolve(newInstanceForScope(IValidationController)) as ValidationController;
      public readonly controller3: ValidationController = resolve(IValidationController) as ValidationController;
    }

    @customElement({ name: 'new-vc-root', template: `<custom-stuff3></custom-stuff3>` })
    class NewVcRoot {
      public controller: ValidationController = resolve(newInstanceForScope(IValidationController)) as ValidationController;
    }

    @customElement({ name: 'custom-stuff1', template: `custom stuff1` })
    class CustomStuff1 {
      public controller: ValidationController = resolve(IValidationController) as ValidationController;
    }

    @customElement({ name: 'custom-stuff2', template: `custom stuff2` })
    class CustomStuff2 {
      public controller: ValidationController = resolve(IValidationController) as ValidationController;
    }

    @customElement({ name: 'custom-stuff3', template: `custom stuff3` })
    class CustomStuff3 {
      public controller: ValidationController = resolve(IValidationController) as ValidationController;
    }

    async function runTest(
      testFunction: TestFunction<TestExecutionContext<VcRoot>>,
    ) {
      const ctx = TestContext.create();
      const container = ctx.container;
      const host = ctx.doc.createElement('div');
      ctx.doc.body.appendChild(host);
      const au = new Aurelia(container);
      await au
        .register(
          ValidationHtmlConfiguration,
          VcRoot,
          NewVcRoot,
          CustomStuff1,
          CustomStuff2,
          CustomStuff3
        )
        .app({ host, component: App })
        .start();

      await testFunction({ app: void 0, container, host, platform: container.get(IPlatform), ctx });

      await au.stop();
      ctx.doc.body.removeChild(host);

      au.dispose();
    }
    const $it = createSpecFunction(runTest);

    $it('injection of validation controller is done properly', function ({ host }) {
      const vcRootEl: HTMLElement = host.querySelector('vc-root');
      const vcRootVm: VcRoot = CustomElement.for(vcRootEl).viewModel as any;

      const cs1: CustomStuff1 = CustomElement.for(host.querySelector('custom-stuff1')).viewModel as any;
      const cs2: CustomStuff2 = CustomElement.for(host.querySelector('custom-stuff2')).viewModel as any;

      const newVcRootEl = host.querySelector('new-vc-root');
      const newVcRoot: NewVcRoot = CustomElement.for(newVcRootEl).viewModel as any;
      const cs3: CustomStuff3 = CustomElement.for(newVcRootEl.querySelector('custom-stuff3')).viewModel as any;

      assert.equal(!!vcRootVm.controller1, true, 'error8');
      assert.equal(!!vcRootVm.controller2, true, 'error9');
      assert.equal(!!vcRootVm.controller3, true, 'error10');

      assert.equal(vcRootVm.controller1, vcRootVm.controller3, 'error1');
      assert.notEqual(vcRootVm.controller1, vcRootVm.controller2, 'error2');

      assert.equal(!!cs1.controller, true, 'error11');
      assert.equal(!!cs2.controller, true, 'error12');
      assert.equal(vcRootVm.controller1, cs1.controller, 'error3');
      assert.equal(vcRootVm.controller1, cs2.controller, 'error4');

      assert.notEqual(vcRootVm.controller1, newVcRoot.controller, 'error5');
      assert.notEqual(vcRootVm.controller2, newVcRoot.controller, 'error6');

      assert.equal(!!cs3.controller, true, 'error13');
      assert.equal(newVcRoot.controller, cs3.controller, 'error7');
    });
  });

  describe('validation-html/validation-controller.spec.ts/validation-controller', function () {
    class App {
      public person1: Person = new Person((void 0)!, (void 0)!);
      public person2: Person = new Person((void 0)!, (void 0)!);
      public person2rules: PropertyRule[];

      public locator: IServiceLocator = resolve(IServiceLocator);
      public controller: ValidationController = resolve(newInstanceForScope(IValidationController)) as ValidationController;
      public readonly validationRules: IValidationRules = resolve(IValidationRules);
      public constructor() {
        const validationRules = this.validationRules;
        validationRules
          .on(this.person1)

          .ensure('name')
          .displayName('Name')
          .required()

          .ensure('age')
          .displayName('Age')
          .required()
          .min(42);

        this.person2rules = validationRules
          .on(this.person2)

          .ensure('name')
          .displayName('Name')
          .required()
          .matches(/foo/)
          .maxLength(5)

          .ensure('age')
          .displayName('Age')
          .required()
          .max(42)

          .rules;
      }

      public unbinding() {
        this.validationRules.off();
        // mandatory cleanup in root
        this.controller.reset();
      }

      public dispose() {
        const controller = this.controller;
        assert.equal(controller.results.length, 0, 'the result should have been removed');
        assert.equal(controller.bindings.size, 0, 'the bindings should have been removed');
        assert.equal(controller.objects.size, 0, 'the objects should have been removed');
      }
    }
    class FooSubscriber implements ValidationResultsSubscriber {
      public notifications: ValidationEvent[] = [];
      public handleValidationEvent(event: ValidationEvent): void {
        this.notifications.push(event);
      }
    }

    interface TestSetupContext {
      template: string;
    }

    async function runTest(
      testFunction: TestFunction<TestExecutionContext<App>>,
      { template = '' }: Partial<TestSetupContext> = {}
    ) {
      const ctx = TestContext.create();
      const container = ctx.container;
      const host = ctx.doc.createElement('app');
      ctx.doc.body.appendChild(host);
      const au = new Aurelia(container);
      await au
        .register(
          ValidationHtmlConfiguration,
          ToNumberValueConverter
        )
        .app({
          host,
          component: CustomElement.define({ name: 'app', template }, App)
        })
        .start();

      const app = au.root.controller.viewModel as App;
      await testFunction({ app, container, host, platform: container.get(IPlatform), ctx });

      await au.stop();
      ctx.doc.body.removeChild(host);

      au.dispose();
    }
    const $it = createSpecFunction(runTest);

    $it('#validate validates both added objects and the registered bindings',
      async function ({ app: { controller: sut, person2, person1 } }) {
        assert.equal(sut['objects'].has(person2), false);

        sut.addObject(person2);
        assert.equal(sut['objects'].has(person2), true);

        const result = await sut.validate();
        assert.greaterThan(result.results.findIndex((r) => Object.is(person1, r.object)), -1);
        assert.greaterThan(result.results.findIndex((r) => Object.is(person2, r.object)), -1);

        // cleanup
        sut.removeObject(person2);
      },
      { template: `<input id="target" type="text" value.two-way="person1.name & validate">` }
    );

    const instructionTestData = [
      {
        text: '{ object }',
        getValidationInstruction: (app: App) => { return new ValidateInstruction(app.person2); },
        assertResult: (result: ControllerValidateResult, instruction: ValidateInstruction<Person>) => {
          const results = result.results;
          assert.equal(results.every((r) => Object.is(instruction.object, r.object)), true);
          assert.equal(results.filter((r) => r.propertyName === 'name').length, 3);
          assert.equal(results.filter((r) => r.propertyName === 'age').length, 2);
        }
      },
      {
        text: '{ object, propertyName }',
        getValidationInstruction: (app: App) => { return new ValidateInstruction(app.person2, 'age'); },
        assertResult: (result: ControllerValidateResult, instruction: ValidateInstruction<Person>) => {
          const results = result.results;
          assert.equal(results.every((r) => Object.is(instruction.object, r.object)), true);
          assert.equal(results.filter((r) => r.propertyName === 'name').length, 0);
          assert.equal(results.filter((r) => r.propertyName === 'age').length, 2);
        }
      },
      {
        text: '{ object, rules }',
        getValidationInstruction: (app: App) => { return new ValidateInstruction(app.person2, void 0, [app.person2rules[1]]); },
        assertResult: (result: ControllerValidateResult, instruction: ValidateInstruction<Person>) => {
          const results = result.results;
          assert.equal(results.every((r) => Object.is(instruction.object, r.object)), true);
          assert.equal(results.filter((r) => r.propertyName === 'name').length, 0);
          assert.equal(results.filter((r) => r.propertyName === 'age').length, 2);
        }
      },
      {
        text: '{ object, propertyName, rules }',
        getValidationInstruction: (app: App) => {
          const { validationRules, messageProvider, property, $rules: [[required,]] } = app.person2rules[1];
          const rule = new PropertyRule(app.locator, validationRules, messageProvider, property, [[required]]);
          return new ValidateInstruction(app.person2, void 0, [rule]);
        },
        assertResult: (result: ControllerValidateResult, instruction: ValidateInstruction<Person>) => {
          const results = result.results;
          assert.equal(results.every((r) => Object.is(instruction.object, r.object)), true);
          assert.equal(results.filter((r) => r.propertyName === 'name').length, 0);
          assert.equal(results.filter((r) => r.propertyName === 'age').length, 1);
        }
      },
    ];
    for (const { text, getValidationInstruction, assertResult } of instructionTestData) {
      $it(`#validate respects explicit validation instruction - ${text}`,
        async function ({ app }) {
          const sut = app.controller;
          const instruction: ValidateInstruction<Person> = getValidationInstruction(app);
          const result = await sut.validate(instruction);
          assertResult(result, instruction);
        },
        { template: `<input id="target" type="text" value.two-way="person1.name & validate">` }
      );
    }

    $it('does not validate objects if it is removed',
      async function ({ app: { controller: sut, person2 } }) {

        assert.equal(sut['objects'].has(person2), false);

        sut.addObject(person2);
        assert.equal(sut['objects'].has(person2), true);

        let result = await sut.validate();
        assert.greaterThan(result.results.findIndex((r) => Object.is(person2, r.object)), -1);

        sut.removeObject(person2);
        assert.equal(sut['objects'].has(person2), false);
        assert.equal(sut.results.findIndex((r) => Object.is(person2, r.object)), -1);

        result = await sut.validate();
        assert.equal(result.results.findIndex((r) => Object.is(person2, r.object)), -1);

        // cleanup
        sut.removeObject(person2);
      },
      { template: `<input id="target" type="text" value.two-way="person1.name & validate">` }
    );

    $it(`can be used to add/remove subscriber of validation errors`,
      async function ({ app: { controller: sut, person2 } }) {
        const subscriber1 = new FooSubscriber();
        const subscriber2 = new FooSubscriber();
        sut.addSubscriber(subscriber1);
        sut.addSubscriber(subscriber2);

        sut.addObject(person2);

        await sut.validate();
        const notifications1 = subscriber1.notifications;
        const notifications2 = subscriber2.notifications;
        assert.equal(notifications1.length, 1);
        assert.equal(notifications2.length, 1);
        const validateEvent = notifications1[0];
        assert.equal(validateEvent, notifications2[0]);
        assert.equal(validateEvent.kind, 'validate');
        assert.equal(validateEvent.addedResults.every((r) => r.result.valid), false);

        notifications1.splice(0);
        notifications2.splice(0);

        sut.removeSubscriber(subscriber2);

        person2.name = 'foo';
        person2.age = 41;
        await sut.validate();

        assert.equal(notifications2.length, 0);
        assert.equal(notifications1.length, 1);

        const removedResults = notifications1[0].removedResults.map((r) => r.result);
        assert.equal(validateEvent.addedResults.map((r) => r.result).every((r) => removedResults.includes(r)), true);
        assert.equal(notifications1[0].addedResults.every((r) => r.result.valid), true);

        // cleanup
        sut.removeObject(person2);
      }
    );

    const testData1 = [
      { text: 'with propertyName', property: 'name' },
      { text: 'without propertyName', property: undefined },
    ];
    for (const { text, property } of testData1) {
      $it(`lets add custom error - ${text}`,
        async function ({ app: { controller: sut, person1 }, platform, host }) {
          const subscriber = new FooSubscriber();
          const msg = 'foobar';
          sut.addSubscriber(subscriber);
          sut.addError(msg, person1, property);
          platform.domQueue.flush();

          const result = sut.results.find((r) => r.object === person1 && r.propertyName === property);
          assert.notEqual(result, void 0);
          assert.equal(result.message, msg);
          assert.equal(result.isManual, true);
          assert.equal(result.valid, false);

          const events = subscriber.notifications;
          assert.equal(events.length, 1);
          assert.equal(events[0].kind, 'validate');
          const addedErrors = events[0].addedResults;
          assert.equal(addedErrors.length, 1);
          assert.equal(addedErrors[0].result, result);

          assert.html.textContent('span.error', msg, 'incorrect msg', host);
        },
        {
          template: `
      <input id="target" type="text" value.two-way="person1.name & validate">
      <span class="error" repeat.for="result of controller.results">
        \${result.message}
      </span>
      ` }
      );

      $it(`lets remove custom error - ${text}`,
        async function ({ app: { controller: sut, person1 }, platform, host }) {
          const subscriber = new FooSubscriber();
          const msg = 'foobar';
          sut.addSubscriber(subscriber);
          const result = sut.addError(msg, person1, property);
          platform.domQueue.flush();
          assert.html.textContent('span.error', msg, 'incorrect msg', host);

          const events = subscriber.notifications;
          events.splice(0);

          sut.removeError(result);
          platform.domQueue.flush();

          assert.equal(events.length, 1);
          assert.equal(events[0].kind, 'reset');
          const removedErrors = events[0].removedResults;
          assert.equal(removedErrors.length, 1);
          assert.equal(removedErrors[0].result, result);
        },
        {
          template: `
      <input id="target" type="text" value.two-way="person1.name & validate">
      <span class="error" repeat.for="result of controller.results">
        \${result.message}
      </span>
      ` }
      );
    }

    $it(`lets remove error`,
      async function ({ app: { controller: sut, person1 }, platform, host }) {
        const subscriber = new FooSubscriber();
        const msg = 'Name is required.';
        sut.addSubscriber(subscriber);
        await sut.validate();
        platform.domQueue.flush();
        assert.html.textContent('span.error', msg, 'incorrect msg', host);

        const result = sut.results.find((r) => r.object === person1 && r.propertyName === 'name' && !r.valid);
        const events = subscriber.notifications;
        events.splice(0);

        sut.removeError(result);
        platform.domQueue.flush();

        assert.equal(events.length, 1);
        assert.equal(events[0].kind, 'reset');
        const removedErrors = events[0].removedResults;
        assert.equal(removedErrors.length, 1);
        assert.equal(removedErrors[0].result, result);
      },
      {
        template: `
        <input id="target" type="text" value.two-way="person1.name & validate">
        <span class="error" repeat.for="result of controller.results">
          \${result.message}
        </span>
        `
      }
    );

    $it(`can be used to re-validate the existing errors`,
      async function ({ app: { controller: sut, person2 } }) {
        sut.addObject(person2);

        await sut.validate();
        const results = sut.results;
        const errors = results.filter((r) => !r.valid);
        assert.equal(errors.length, 2);
        const nameError = errors[0];
        const ageError = errors[1];
        assert.equal(nameError.valid, false);
        assert.equal(nameError.message, `Name is required.`);
        assert.equal(nameError.object, person2);
        assert.equal(ageError.valid, false);
        assert.equal(ageError.message, `Age is required.`);
        assert.equal(ageError.object, person2);

        person2.name = 'foobar';
        person2.age = 43;

        await sut.revalidateErrors();
        assert.equal(results.filter((r) => !r.valid).length, 0);

        // cleanup
        sut.removeObject(person2);
      }
    );

    $it(`revalidateErrors does not remove the manually added errors - w/o pre-existing errors`,
      async function ({ app: { controller: sut, person1 }, platform, host }) {
        const msg = 'foobar';
        const result = sut.addError(msg, person1);
        platform.domQueue.flush();
        assert.html.textContent('span.error', msg, 'incorrect msg', host);

        await sut.revalidateErrors();
        assert.includes(sut.results, result);
      },
      {
        template: `
    <input id="target" type="text" value.two-way="person1.name & validate">
    <span class="error" repeat.for="result of controller.results">
      \${result.message}
    </span>
    ` }
    );

    $it(`revalidateErrors does not remove the manually added errors - with pre-exiting errors`,
      async function ({ app: { controller: sut, person1 } }) {
        await sut.validate();
        const msg = 'foobar';
        sut.addError(msg, person1);
        assert.deepStrictEqual(sut.results.filter((r) => !r.valid).map((r) => r.toString()), ['Name is required.', msg]);

        person1.name = "test";
        await sut.revalidateErrors();
        assert.deepStrictEqual(sut.results.filter((r) => !r.valid).map((r) => r.toString()), [msg]);
      },
      {
        template: `<input id="target" type="text" value.two-way="person1.name & validate">`
      }
    );

    $it(`validate removes the manually added errors`,
      async function ({ app: { controller: sut, person1 } }) {
        await sut.validate();
        const msg = 'foobar';
        sut.addError(msg, person1);
        assert.deepStrictEqual(sut.results.filter((r) => !r.valid).map((r) => r.toString()), ['Name is required.', msg]);

        await sut.validate();
        assert.deepStrictEqual(sut.results.filter((r) => !r.valid).map((r) => r.toString()), ['Name is required.']);
      },
      {
        template: `<input id="target" type="text" value.two-way="person1.name & validate">`
      }
    );

    $it(`can be used to validate all the tagged objects registered`,
      async function ({ app: { controller: sut, validationRules } }) {
        const obj1 = { a: 1, b: 2 };
        const tag = 'tag';
        validationRules
          .on(obj1, tag)
          .ensure('a')
          .equals(42);
        sut.addObject(obj1);

        await sut.validate(new ValidateInstruction((void 0)!, (void 0)!, (void 0)!, tag));

        assert.deepEqual(sut.results.map((r) => r.toString()), ['A must be 42.']);

        // cleanup
        sut.removeObject(obj1);
      }
    );

    $it(`validates object only based on specific ruleset when specified`,
      async function ({ app: { controller: sut, validationRules } }) {
        const obj: Person = new Person((void 0)!, (void 0)!, (void 0)!);
        const tag1 = 'tag1', tag2 = 'tag2';
        validationRules
          .on(obj, tag1)
          .ensure('name')
          .required()

          .on(obj, tag2)
          .ensure('age')
          .required();

        const { valid, results } = await sut.validate(new ValidateInstruction(obj, void 0, void 0, tag1));

        assert.equal(valid, false);
        const messages = ['Name is required.'];
        assert.deepEqual(results.map((r) => r.toString()), messages);
        assert.deepEqual(sut.results.filter((r) => !r.valid).map((r) => r.toString()), messages);

        validationRules.off();
      });

    $it(`validates object property only based on the tagged rules when specified`,
      async function ({ app: { controller: sut, validationRules } }) {
        const obj: Person = new Person((void 0)!, (void 0)!, (void 0)!);
        const tag1 = 'tag1', tag2 = 'tag2';
        const msg1 = 'msg1', msg2 = 'msg2';
        validationRules
          .on(obj)
          .ensure('name')
          .satisfies((value) => value === 'fizbaz')
          .withMessage(msg1)
          .tag(tag1)
          .satisfies((value) => value === 'foobar')
          .withMessage(msg2)
          .tag(tag2);

        const { valid, results } = await sut.validate(new ValidateInstruction(obj, void 0, void 0, void 0, tag1));

        assert.equal(valid, false);
        assert.deepEqual(results.map((r) => r.toString()), [msg1]);
        assert.deepEqual(sut.results.filter((r) => !r.valid).map((r) => r.toString()), [msg1]);

        validationRules.off();
      });

    $it(`validates object based on both the object and property tags`,
      async function ({ app: { controller: sut, validationRules } }) {
        const obj: Person = new Person((void 0)!, (void 0)!, (void 0)!);
        const tag1 = 'tag1', tag2 = 'tag2';
        const pTag1 = 'ptag1', pTag2 = 'ptag2';
        const msg1 = 'msg1', msg2 = 'msg2';

        validationRules
          .on(obj, tag1)
          .ensure('name')
          .satisfies((value) => value === 'fizbaz')
          .withMessage(msg1)
          .tag(pTag1)
          .satisfies((value) => value === 'foobar')
          .withMessage(msg2)
          .tag(pTag2)

          .on(obj, tag2)
          .ensure('age')
          .required();

        const { valid, results } = await sut.validate(new ValidateInstruction(obj, void 0, void 0, tag1, pTag1));

        assert.equal(valid, false);
        assert.deepEqual(results.map((r) => r.toString()), [msg1]);
        assert.deepEqual(sut.results.filter((r) => !r.valid).map((r) => r.toString()), [msg1]);

        validationRules.off();
      });

    $it('#validate does not produce duplicate result if the same object is also registered as well as used in binding',
      async function ({ app: { controller: sut, person1 } }) {
        assert.equal(sut['objects'].has(person1), false);

        sut.addObject(person1);
        assert.equal(sut['objects'].has(person1), true);

        const result = await sut.validate();
        assert.deepStrictEqual(result.results.filter((r) => !r.valid).map((r) => r.toString()), ['Name is required.', 'Age is required.']);

        // cleanup
        sut.removeObject(person1);
      },
      { template: `<input id="target" type="text" value.two-way="person1.name & validate">` }
    );
  });
});
