import { injectable, inject } from 'tsyringe';
import * as operations from '../../shared/operations';
import KeymapUseCase from '../usecases/KeymapUseCase';
import AddonEnabledUseCase from '../usecases/AddonEnabledUseCase';
import FindSlaveUseCase from '../usecases/FindSlaveUseCase';
import ScrollUseCase from '../usecases/ScrollUseCase';
import FocusUseCase from '../usecases/FocusUseCase';
import ClipboardUseCase from '../usecases/ClipboardUseCase';
import OperationClient from '../client/OperationClient';
import MarkKeyyUseCase from '../usecases/MarkKeyUseCase';
import FollowMasterClient from '../client/FollowMasterClient';
import Key from '../../shared/settings/Key';

@injectable()
export default class KeymapController {
  constructor(
    private keymapUseCase: KeymapUseCase,
    private addonEnabledUseCase: AddonEnabledUseCase,
    private findSlaveUseCase: FindSlaveUseCase,
    private scrollUseCase: ScrollUseCase,
    private focusUseCase: FocusUseCase,
    private clipbaordUseCase: ClipboardUseCase,
    private markKeyUseCase: MarkKeyyUseCase,

    @inject('OperationClient')
    private operationClient: OperationClient,

    @inject('FollowMasterClient')
    private followMasterClient: FollowMasterClient,
  ) {
  }

  // eslint-disable-next-line complexity, max-lines-per-function
  press(key: Key): boolean {
    const nextOp = this.keymapUseCase.nextOps(key);
    if (nextOp === null) {
      return false;
    }

    if (!operations.isNRepeatable(nextOp.op.type)) {
      nextOp.repeat = 1;
    }

    const doFunc = ((op: operations.Operation) => {
      switch (op.type) {
      case operations.ADDON_ENABLE:
        return () => this.addonEnabledUseCase.enable();
      case operations.ADDON_DISABLE:
        return () => this.addonEnabledUseCase.disable();
      case operations.ADDON_TOGGLE_ENABLED:
        return () => this.addonEnabledUseCase.toggle();
      case operations.FIND_NEXT:
        return () => this.findSlaveUseCase.findNext();
      case operations.FIND_PREV:
        return () => this.findSlaveUseCase.findPrev();
      case operations.SCROLL_VERTICALLY:
        return () => this.scrollUseCase.scrollVertically(op.count);
      case operations.SCROLL_HORIZONALLY:
        return () => this.scrollUseCase.scrollHorizonally(op.count);
      case operations.SCROLL_PAGES:
        return () => this.scrollUseCase.scrollPages(op.count);
      case operations.SCROLL_TOP:
        return () => this.scrollUseCase.scrollToTop();
      case operations.SCROLL_BOTTOM:
        return () => this.scrollUseCase.scrollToBottom();
      case operations.SCROLL_HOME:
        return () => this.scrollUseCase.scrollToHome();
      case operations.SCROLL_END:
        return () => this.scrollUseCase.scrollToEnd();
      case operations.FOLLOW_START:
        return () => this.followMasterClient.startFollow(
          op.newTab, op.background);
      case operations.MARK_SET_PREFIX:
        return () => this.markKeyUseCase.enableSetMode();
      case operations.MARK_JUMP_PREFIX:
        return () => this.markKeyUseCase.enableJumpMode();
      case operations.FOCUS_INPUT:
        return () => this.focusUseCase.focusFirstInput();
      case operations.URLS_YANK:
        return () => this.clipbaordUseCase.yankCurrentURL();
      case operations.URLS_PASTE:
        return () => this.clipbaordUseCase.openOrSearch(
          op.newTab ? op.newTab : false,
        );
      default:
        return null;
      }
    })(nextOp.op);

    if (doFunc === null) {
      // Do not await asynchronous methods to return a boolean immidiately. The
      // caller requires the synchronous response from the callback to identify
      // to continue of abandon the event propagations.
      this.operationClient.execBackgroundOp(nextOp.repeat, nextOp.op);
    } else {
      for (let i = 0; i < nextOp.repeat; ++i) {
        doFunc();
      }
    }
    return true;
  }
}