import "reflect-metadata";
import KeymapUseCase from '../../../src/content/usecases/KeymapUseCase';
import {expect} from 'chai';
import SettingRepository from "../../../src/content/repositories/SettingRepository";
import Settings from "../../../src/shared/settings/Settings";
import AddonEnabledRepository from "../../../src/content/repositories/AddonEnabledRepository";
import {KeymapRepositoryImpl} from "../../../src/content/repositories/KeymapRepository";
import Key from "../../../src/shared/settings/Key";
import AddressRepository from "../../../src/content/repositories/AddressRepository";

class MockSettingRepository implements SettingRepository {
  constructor(
    private readonly settings: Settings,
  ) {
  }

  get(): Settings {
    return this.settings;
  }

  set(_setting: Settings): void {
    throw new Error('TODO');
  }
}

class MockAddonEnabledRepository implements AddonEnabledRepository {
  constructor(
    private readonly enabled: boolean,
  ) {
  }

  get(): boolean {
    return this.enabled;
  }

  set(_on: boolean): void {
    throw new Error('TODO');
  }
}

class MockAddressRepository implements AddressRepository {
  constructor(
    private url: URL,
  ) {
  }

  getCurrentURL(): URL {
    return this.url;
  }
}


describe('KeymapUseCase', () => {
  context('with no-digis keymaps', () => {
    const settings = Settings.fromJSON({
      keymaps: {
        k: {type: 'scroll.vertically', count: -1},
        j: {type: 'scroll.vertically', count: 1},
        gg: {type: 'scroll.top'},
      },
    });

    let sut: KeymapUseCase;

    before(() => {
      sut = new KeymapUseCase(
          new KeymapRepositoryImpl(),
          new MockSettingRepository(settings),
          new MockAddonEnabledRepository(true),
          new MockAddressRepository(new URL('https://example.com')),
      );
    });

    it('returns matched operation', () => {
      expect(sut.nextOps(Key.fromMapKey('k'))).to.deep.equal({ repeat: 1, op: {type: 'scroll.vertically', count: -1}});
      expect(sut.nextOps(Key.fromMapKey('j'))).to.deep.equal({ repeat: 1, op: {type: 'scroll.vertically', count: 1}});
      expect(sut.nextOps(Key.fromMapKey('g'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('g'))).to.deep.equal({ repeat: 1, op: {type: 'scroll.top'}});
      expect(sut.nextOps(Key.fromMapKey('z'))).to.be.null;
    });

    it('repeats n-times by numeric prefix and multiple key operations', () => {
      expect(sut.nextOps(Key.fromMapKey('1'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('0'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('g'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('g'))).to.deep.equal({ repeat: 10, op: {type: "scroll.top"}});
    });
  });

  context('when keymaps containing numeric mappings', () => {
    const settings = Settings.fromJSON({
      keymaps: {
        20: {type: "scroll.top"},
        g5: {type: 'scroll.bottom'},
      },
    });

    let sut: KeymapUseCase;

    before(() => {
      sut = new KeymapUseCase(
          new KeymapRepositoryImpl(),
          new MockSettingRepository(settings),
          new MockAddonEnabledRepository(true),
          new MockAddressRepository(new URL('https://example.com')),
      );
    });

    it('returns the matched operation ends with digit', () => {
      expect(sut.nextOps(Key.fromMapKey('g'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('5'))).to.be.deep.equal({ repeat: 1, op: { type: 'scroll.bottom'}});
    });

    it('returns an operation matched the operation with digit keymaps', () => {
      expect(sut.nextOps(Key.fromMapKey('2'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('0'))).to.be.deep.equal({ repeat: 1, op: { type: 'scroll.top'}});
    });

    it('returns operations repeated by numeric prefix', () => {
      expect(sut.nextOps(Key.fromMapKey('2'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('g'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('5'))).to.be.deep.equal({ repeat: 2, op: { type: 'scroll.bottom'}});
    });

    it('does not matches with digit operation with numeric prefix', () => {
      expect(sut.nextOps(Key.fromMapKey('3'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('2'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('0'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('g'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('5'))).to.be.deep.equal({ repeat: 320, op: { type: 'scroll.bottom'}});
    });
  });

  context('when the keys are mismatched with the operations', () => {
    const settings = Settings.fromJSON({
      keymaps: {
        gg: {type: "scroll.top"},
        G: {type: "scroll.bottom"},
      },
    });

    let sut: KeymapUseCase;

    before(() => {
      sut = new KeymapUseCase(
          new KeymapRepositoryImpl(),
          new MockSettingRepository(settings),
          new MockAddonEnabledRepository(true),
          new MockAddressRepository(new URL('https://example.com')),
      );
    });

    it('clears input keys with no-matched operations', () => {
      expect(sut.nextOps(Key.fromMapKey('g'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('x'))).to.be.null; // clear
      expect(sut.nextOps(Key.fromMapKey('g'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('g'))).to.deep.equal({repeat: 1, op: {type: "scroll.top"}});
    });

    it('clears input keys and the prefix with no-matched operations', () => {
      expect(sut.nextOps(Key.fromMapKey('1'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('0'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('g'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('x'))).to.be.null;   // clear
      expect(sut.nextOps(Key.fromMapKey('1'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('0'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('g'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('g'))).to.deep.equal({ repeat: 10, op: {type: "scroll.top"}});
    });
  });

  context('when the site matches to the blacklist', () => {
    const settings = Settings.fromJSON({
      keymaps: {
        k: {type: 'scroll.vertically', count: -1},
        a: {type: 'addon.enable'},
        b: {type: 'addon.toggle.enabled'},
      },
    });

    let sut: KeymapUseCase;

    before(() => {
      sut = new KeymapUseCase(
          new KeymapRepositoryImpl(),
          new MockSettingRepository(settings),
          new MockAddonEnabledRepository(false),
          new MockAddressRepository(new URL('https://example.com')),
      );
    });

    it('returns only ADDON_ENABLE and ADDON_TOGGLE_ENABLED operation', () => {
      expect(sut.nextOps(Key.fromMapKey('k'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('a'))).to.deep.equal({ repeat: 1, op: {type: 'addon.enable'}});
      expect(sut.nextOps(Key.fromMapKey('b'))).to.deep.equal({ repeat: 1, op: {type: 'addon.toggle.enabled'}});
    });
  });

  context('when the site matches to the partial blacklist', () => {
    const settings = Settings.fromJSON({
      keymaps: {
        k: {type: 'scroll.vertically', count: -1},
        j: {type: 'scroll.vertically', count: 1},
        gg: {type: "scroll.top"},
        G: {type: "scroll.bottom"},
      },
      blacklist: [
        { url: "example.com", keys: ['g'] },
        { url: "example.org", keys: ['<S-G>'] }
      ],
    });

    it('blocks keys in the partial blacklist', () => {
      let sut = new KeymapUseCase(
          new KeymapRepositoryImpl(),
          new MockSettingRepository(settings),
          new MockAddonEnabledRepository(true),
          new MockAddressRepository(new URL('https://example.com')),
      );

      expect(sut.nextOps(Key.fromMapKey('k'))).to.deep.equal({ repeat: 1, op: {type: 'scroll.vertically', count: -1}});
      expect(sut.nextOps(Key.fromMapKey('j'))).to.deep.equal({ repeat: 1, op: {type: 'scroll.vertically', count: 1}});
      expect(sut.nextOps(Key.fromMapKey('g'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('g'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('G'))).to.deep.equal({ repeat: 1, op: {type: 'scroll.bottom'}});

      sut = new KeymapUseCase(
          new KeymapRepositoryImpl(),
          new MockSettingRepository(settings),
          new MockAddonEnabledRepository(true),
          new MockAddressRepository(new URL('https://example.org')),
      );

      expect(sut.nextOps(Key.fromMapKey('g'))).to.be.null;
      expect(sut.nextOps(Key.fromMapKey('g'))).to.deep.equal({ repeat: 1, op: {type: 'scroll.top'}});
      expect(sut.nextOps(Key.fromMapKey('G'))).to.be.null;
    });
  });
});