import { Video as BaseVideo, type FrameTime, type InitConfig } from '$/lib/Player/Video';
import AudioURL from './03. Lemaitre, Jennie A. - Closer - 2min version.flac?url'

type FontInfo = {
  family: string, size: number, weight?: number
}
const renderText = (ctx: CanvasRenderingContext2D, text: string, color: string, fontInfo: FontInfo, { x, y }: { x: number, y: number }, align = 'left' as CanvasTextAlign) => {
  ctx.font = `normal normal ${fontInfo.weight ?? 400} ${fontInfo.size}px ${fontInfo.family}`;
  ctx.fillStyle = color
  ctx.textAlign = align
  ctx.fillText(text, x, y)
}
const getTextSize = (ctx: CanvasRenderingContext2D, text: string, fontInfo: FontInfo) => {
  ctx.font = `normal normal ${fontInfo.weight ?? 400} ${fontInfo.size}px ${fontInfo.family}`;
  return ctx.measureText(text)
}

export default class Video extends BaseVideo {
  public ctx!: CanvasRenderingContext2D
  protected isPreview = false;
  protected px(pixels: number) {
    return this.isPreview ? pixels / 1.5 : pixels
  }
  public async init({ isPreview }: InitConfig): Promise<void> {
    // this.resize(this.canvas.parentElement.clientWidth,this.canvas.parentElement.clientHeight)
    this.isPreview = isPreview
    this.resize(this.px(1920), this.px(1080))
    this.ctx = this.canvas.getContext('2d')!

    const v = document.createElement('video')
    v.load()
    await new Promise((rs, rj) => {
      let debounce = false;
      const timeout = setTimeout(() => {
        if (!debounce) rj('Failed to load video - timed out.')
      }, 1000);
      v.addEventListener('load', () => {
        rs(void 0)
        clearTimeout(timeout)
      }, {
        once: true
      })
    })
    // 
  }
  public renderFrame(time: FrameTime): Promise<void> | void {
    const beat = 1 + ((time.seconds - 0.098) * (92 / 60))
    const center = [this.w / 2, this.h / 2] as const
    if (beat < 13 || beat >= 16) {
      this.ctx.fillStyle = '#fff';
      this.ctx.fillRect(0, 0, this.w, this.h);
    } else {
      this.ctx.fillStyle = '#000';
      this.ctx.fillRect(0, 0, this.w, this.h);
    }
    const AdDefault: FontInfo = {
      family: 'Inter Variable',
      size: this.px(52),
      weight: 450
    }
    if (this.isPreview)
      renderText(this.ctx, `${(Math.floor(beat * 100) / 100).toFixed(1)}`, '#646663', { ...AdDefault, size: this.px(12), weight: 400 }, { x: this.w - this.px(4), y: this.h - this.px(4) }, 'end')
    switch (true) {
      case beat >= 1 && beat < 4.3:
        renderText(this.ctx, `Need a new AI assistant?`, '#646663', AdDefault, { x: center[0], y: center[1] }, 'center')
        break;
      case beat >= 4.3 && beat < 8.4: {
        const text = `Like${beat >= 4.8 ? ' new' : ''}${beat >= 5.02 ? ' new' : ''}`;
        const longTextWidth = getTextSize(this.ctx, 'Like new new', AdDefault)
        renderText(this.ctx, text, '#646663', AdDefault, { x: center[0] - longTextWidth.width / 2, y: center[1] }, 'start')
        break;
      }
      case beat >= 8.4 && beat < 13: {
        const text = `Like${beat >= 9 ? ` runs random shit in your terminal` : ''}${beat >= 11 ? ' new' : ''}`;
        const longTextWidth = getTextSize(this.ctx, `Like runs random shit in your terminal new`, AdDefault)
        renderText(this.ctx, text, '#646663', AdDefault, { x: center[0] - longTextWidth.width / 2, y: center[1] }, 'start')
        break;
      }
      // TODO:

      default:
        break;
    }
  }
  // public fps = 59.94;
  public fps = 30;
  public length = Math.ceil(2 * 60 * this.fps);
  public audioUrl = ['03. Lemaitre, Jennie A. - Closer.flac', AudioURL] as const
}