// Clock generation component for the LogicSimulator used on the 8-bit-computer
// Copyright (C) 2022 Sascha Nitsch

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

// eslint-disable-next-line @typescript-eslint/no-unused-vars
function EightBitClockInit() {
  interface EightBitClockText {
    auto: string;
    manual: string;
  }

  interface EightBitClockParam extends BaseComponentParam {
    speed?: string;
    mode?: string;
    auto?: string;
    manual?: string;
  }
  class EightBitClock extends LogicBase {
    private clockState: boolean;
    private speed: number;
    private input: string;
    private runAuto: boolean;
    private texts: EightBitClockText;
    private manual: NodeListOf<Element> | undefined;
    private speedInput: HTMLInputElement | null = null;
    // eslint-disable-next-line @typescript-eslint/no-explicit-any
    private timer: any = undefined;
    private auto: NodeListOf<Element> | undefined;
    private CLK = false;
    constructor(simulator: Simulator, id: string, param: EightBitClockParam) {
      super(simulator, id, param);
      this.pins.set('CLK', new TriState(this, 30, -20));
      this.pins.set('invCLK', new TriState(this, 30, 20));
      this.clockState = false;
      if (param.speed) {
        this.speed = 0;
        this.input = param.speed;
      } else {
        this.speed = 1;
        this.input = 'undefined';
      }
      this.runAuto = param.mode ? param.mode === 'auto' : false;
      this.texts = {
        auto: param.auto ? param.auto : 'auto',
        manual: param.manual ? param.manual : 'manual',
      };
      this.auto = undefined;
      this.manual = undefined;
    }
    tick(): void {
      this.clockState = !this.clockState;
      if (this.manual) {
        this.manual[0].textContent = this.clockState ? '1' : '0';
      }
      this.simulator.tick();
    }
    setup(canvas: SVGElement) {
      super.doSetup('eightbitclock', canvas);
      if (this.speed === 0) {
        this.speedInput = <HTMLInputElement | null>document.getElementById(this.input);
        if (this.speedInput) {
          this.speedInput.addEventListener('change', this.changeSpeed.bind(this));
          this.speed = parseFloat(this.speedInput.value);
          if (this.runAuto) {
            this.timer = setInterval(this.tick.bind(this), 500 / this.speed);
          }
        }
      } else {
        this.timer = setInterval(this.tick.bind(this), 500 / this.speed);
      }
      if (this.element) {
        const gAuto = this.element.querySelectorAll('g.auto')[0];
        this.auto = gAuto.querySelectorAll('text.inner');
        gAuto.querySelectorAll('.label')[0].innerHTML = this.texts.auto;
        gAuto.addEventListener('mousedown', this.toggleAuto.bind(this));

        const gManual = this.element.querySelectorAll('g.manual')[0];
        this.manual = gManual.querySelectorAll('text.inner');
        gManual.querySelectorAll('.label')[0].innerHTML = this.texts.manual;
        gManual.addEventListener('mousedown', this.toggleManual.bind(this));
      }
    }

    update() {
      const oldstate = this.CLK;
      this.CLK = this.clockState;
      this.getPin('CLK').setBool(this.clockState);
      this.getPin('invCLK').setBool(!this.clockState);
      return oldstate !== this.clockState;
    }

    changeSpeed() {
      if (this.speedInput) {
        this.speed = parseFloat(this.speedInput.value);
      }
      if (this.runAuto) {
        clearInterval(this.timer);
        this.timer = setInterval(this.tick.bind(this), 500 / this.speed);
      }
    }

    close() {
      clearInterval(this.timer);
    }

    toggleAuto(e: Event) {
      e.preventDefault();
      if (this.runAuto) {
        clearInterval(this.timer);
      } else {
        this.timer = setInterval(this.tick.bind(this), 500 / this.speed);
      }
      this.runAuto = !this.runAuto;
      if (this.auto) {
        this.auto[0].textContent = this.runAuto ? '1' : '0';
      }
    }

    toggleManual(e: Event) {
      e.preventDefault();
      this.tick();
    }
  }
  window.EightBitClock = EightBitClock;
}

// eslint-disable-next-line @typescript-eslint/no-unused-vars
function EightBitClockDepends() {
  return 'LogicBase';
}