import { Component, Env } from "../src/component";
import { makeTestFixture, makeTestEnv } from "./helpers";
import { QWeb, UTILS } from "../src/qweb_core";

//------------------------------------------------------------------------------
// Setup and helpers
//------------------------------------------------------------------------------

let fixture: HTMLElement;
let env: Env;
let dev: boolean = false;

beforeEach(() => {
  fixture = makeTestFixture();
  env = makeTestEnv();
  dev = QWeb.dev;
  QWeb.dev = true;
});

afterEach(() => {
  fixture.remove();
  QWeb.dev = dev;
});

class Widget extends Component<any, any, any> {}

//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------
describe("props validation", () => {
  test("validation is only done in dev mode", async () => {
    class TestWidget extends Widget {
      static props = ["message"];
    }

    QWeb.dev = true;
    expect(() => {
      new TestWidget(env);
    }).toThrow();

    QWeb.dev = false;

    expect(() => {
      new TestWidget(env);
    }).not.toThrow();
  });

  test("props: list of strings", async () => {
    class TestWidget extends Widget {
      static props = ["message"];
    }

    expect(() => {
      new TestWidget(env);
    }).toThrow("Missing props 'message' (component 'TestWidget')");
  });

  test("validate simple types", async () => {
    const Tests = [
      { type: Number, ok: 1, ko: "1" },
      { type: Boolean, ok: true, ko: "1" },
      { type: String, ok: "1", ko: 1 },
      { type: Object, ok: {}, ko: "1" },
      { type: Date, ok: new Date(), ko: "1" },
      { type: Function, ok: () => {}, ko: "1" }
    ];

    for (let test of Tests) {
      let TestWidget = class extends Widget {
        static props = { p: test.type };
      };

      expect(() => {
        new TestWidget(env);
      }).toThrow("Missing props 'p'");

      expect(() => {
        new TestWidget(env, { p: test.ok });
      }).not.toThrow();

      expect(() => {
        new TestWidget(env, { p: test.ko });
      }).toThrow("Props 'p' of invalid type in component");
    }
  });

  test("validate simple types, alternate form", async () => {
    const Tests = [
      { type: Number, ok: 1, ko: "1" },
      { type: Boolean, ok: true, ko: "1" },
      { type: String, ok: "1", ko: 1 },
      { type: Object, ok: {}, ko: "1" },
      { type: Date, ok: new Date(), ko: "1" },
      { type: Function, ok: () => {}, ko: "1" }
    ];

    for (let test of Tests) {
      let TestWidget = class extends Widget {
        static props = { p: { type: test.type } };
      };

      expect(() => {
        new TestWidget(env);
      }).toThrow("Missing props 'p'");

      expect(() => {
        new TestWidget(env, { p: test.ok });
      }).not.toThrow();

      expect(() => {
        new TestWidget(env, { p: test.ko });
      }).toThrow("Props 'p' of invalid type in component");
    }
  });

  test("can validate a prop with multiple types", async () => {
    let TestWidget = class extends Widget {
      static props = { p: [String, Boolean] };
    };

    expect(() => {
      new TestWidget(env, { p: "string" });
      new TestWidget(env, { p: true });
    }).not.toThrow();

    expect(() => {
      new TestWidget(env, { p: 1 });
    }).toThrow("Props 'p' of invalid type in component");
  });

  test("can validate an optional props", async () => {
    let TestWidget = class extends Widget {
      static props = { p: { type: String, optional: true } };
    };

    expect(() => {
      new TestWidget(env, { p: "hey" });
      new TestWidget(env, {});
    }).not.toThrow();

    expect(() => {
      new TestWidget(env, { p: 1 });
    }).toThrow();
  });

  test("can validate an array with given primitive type", async () => {
    let TestWidget = class extends Widget {
      static props = { p: { type: Array, element: String } };
    };

    expect(() => {
      new TestWidget(env, { p: [] });
      new TestWidget(env, { p: ["string"] });
    }).not.toThrow();

    expect(() => {
      new TestWidget(env, { p: [1] });
    }).toThrow();

    expect(() => {
      new TestWidget(env, { p: ["string", 1] });
    }).toThrow();
  });

  test("can validate an array with multiple sub element types", async () => {
    let TestWidget = class extends Widget {
      static props = { p: { type: Array, element: [String, Boolean] } };
    };

    expect(() => {
      new TestWidget(env, { p: [] });
      new TestWidget(env, { p: ["string"] });
      new TestWidget(env, { p: [false, true, "string"] });
    }).not.toThrow();

    expect(() => {
      new TestWidget(env, { p: [true, 1] });
    }).toThrow();
  });

  test("can validate an object with simple shape", async () => {
    let TestWidget = class extends Widget {
      static props = {
        p: { type: Object, shape: { id: Number, url: String } }
      };
    };

    expect(() => {
      new TestWidget(env, { p: { id: 1, url: "url" } });
      new TestWidget(env, { p: { id: 1, url: "url", extra: true } });
    }).not.toThrow();

    expect(() => {
      new TestWidget(env, { p: { id: "1", url: "url" } });
    }).toThrow();

    expect(() => {
      new TestWidget(env, { p: { id: 1 } });
    }).toThrow();
  });

  test("can validate recursively complicated prop def", async () => {
    let TestWidget = class extends Widget {
      static props = {
        p: {
          type: Object,
          shape: {
            id: Number,
            url: [Boolean, { type: Array, element: Number }]
          }
        }
      };
    };

    expect(() => {
      new TestWidget(env, { p: { id: 1, url: true } });
      new TestWidget(env, { p: { id: 1, url: [12] } });
    }).not.toThrow();

    expect(() => {
      new TestWidget(env, { p: { id: 1, url: [12, true] } });
    }).toThrow();
  });

  test("props are validated in dev mode (code snapshot)", async () => {
    env.qweb.addTemplates(`
      <templates>
        <div t-name="App">
          <Child message="1"/>
        </div>
        <div t-name="Child"><t t-esc="props.message"/></div>
      </templates>`);

    class Child extends Widget {
      static props = ["message"];
    }
    class App extends Widget {
      components = { Child };
    }
    const app = new App(env);
    await app.mount(fixture);
    expect(fixture.innerHTML).toBe("<div><div>1</div></div>");
    // need to make sure there are 2 call to update props. one at component
    // creation, and one at update time.
    expect(env.qweb.templates.App.fn.toString()).toMatchSnapshot();
  });

  test("props: list of strings with optional props", async () => {
    class TestWidget extends Widget {
      static props = ["message", "someProp?"];
    }

    expect(() => {
      UTILS.validateProps(TestWidget, { someProp: 1 });
    }).toThrow();
    expect(() => {
      UTILS.validateProps(TestWidget, { message: 1 });
    }).not.toThrow();
  });

  test("props: can be defined with a boolean", async () => {
    class TestWidget extends Widget {
      static props = { message: true };
    }

    expect(() => {
      UTILS.validateProps(TestWidget, {});
    }).toThrow();
  });

  test("props: extra props cause an error", async () => {
    class TestWidget extends Widget {
      static props = ["message"];
    }

    expect(() => {
      UTILS.validateProps(TestWidget, { message: 1, flag: true });
    }).toThrow();
  });

  test("props: extra props cause an error, part 2", async () => {
    class TestWidget extends Widget {
      static props = {message: true};
    }

    expect(() => {
      UTILS.validateProps(TestWidget, { message: 1, flag: true });
    }).toThrow();
  });

  test("props: optional prop do not cause an error", async () => {
    class TestWidget extends Widget {
      static props = ["message?"];
    }

    expect(() => {
      UTILS.validateProps(TestWidget, { message: 1});
    }).not.toThrow();
  });

  test("optional prop do not cause an error if value is undefined", async () => {
    class TestWidget extends Widget {
      static props = {message: {type: String, optional: true}};
    }

    expect(() => {
      UTILS.validateProps(TestWidget, { message: undefined});
    }).not.toThrow();
    expect(() => {
      UTILS.validateProps(TestWidget, { message: null});
    }).toThrow();
  });

});

describe("default props", () => {
  test("can set default values", async () => {
    class TestWidget extends Widget {
      static defaultProps = { p: 4 };
    }

    const w = new TestWidget(env, {});
    expect(w.props.p).toBe(4);
  });

  test("default values are also set whenever component is updated", async () => {
    class TestWidget extends Widget {
      static defaultProps = { p: 4 };
    }

    const w = new TestWidget(env, { p: 1 });
    await w.__updateProps({});
    expect(w.props.p).toBe(4);
  });
});