stack-chan

import type parseBMF from 'commodetto/parseBMF'
import type { FaceDecoratorFactory } from 'renderer-base'
import { Outline } from 'commodetto/outline'

export const createBalloonDecorator: FaceDecoratorFactory<
  ({ left: number; right?: number } | { left?: number; right?: number }) &
    ({ top: number; bottom?: number } | { top?: undefined; bottom: number }) & {
      width: number
      height: number
      font: ReturnType<typeof parseBMF>
      text: string
    },
  boolean
> = ({ width, height, font, text, left, right, top, bottom }) => {
  const outline = Outline.fill(Outline.RoundRectPath(0, 0, width, height, 6))
  let textX = 0
  const space = 20
  return (tick, poco, { theme }, end = false) => {
    const x = left ?? (right != null ? poco.width - right - width : (poco.width - width) / 2)
    const y = top ?? (bottom != null ? poco.height - bottom - height : (poco.height - height) / 2)
    const textWidth = poco.getTextWidth(text, font)
    const bg = poco.makeColor(...theme.secondary)
    const white = poco.makeColor(0xff, 0xff, 0xff)
    const black = poco.makeColor(0x00, 0x00, 0x00)
    poco.begin(x, y, width, height)
    poco.fillRectangle(bg, 0, 0, poco.width, poco.height)
    if (end) {
      poco.end()
      return
    }
    poco.blendOutline(white, 255, outline, x, y)
    poco.drawText(text, font, black, x - textX, y)
    if (textWidth > width) {
      if (textWidth + space >= Math.floor(textX)) {
        poco.drawText(text, font, black, x - textX + textWidth + space, y)
      }
      textX = textX >= textWidth + space ? 2 : textX + tick / 30
    }
    poco.end()
  }
}

export const createBubbleDecorator: FaceDecoratorFactory<{
  x: number
  y: number
  width: number
  height: number
}> = ({ x, y, width, height }) => {
  const bubbles: { x: number; vx: number; y: number; r: number }[] = []
  for (let i = 0; i < 4; i++) {
    bubbles.push({
      x: Math.random() * width,
      vx: 0,
      y: Math.random() * height,
      r: 4 + Math.random() * 3,
    })
  }
  let count = 0
  return (tick, poco, { theme }, end = false) => {
    poco.begin(x, y, width, height)
    const fg = poco.makeColor(...theme.primary)
    const bg = poco.makeColor(...theme.secondary)
    poco.fillRectangle(bg, x, y, width, height)
    if (end) {
      poco.end()
      return
    }
    const path = new Outline.CanvasPath()
    count = (count + tick) % 1000
    for (const b of bubbles) {
      const upwardSpeed = 1 - b.r / 12

      b.vx = b.vx * 0.85 + 0.1 * (Math.random() - 0.5)
      b.x += b.vx

      b.x = Math.max(b.r, Math.min(width - b.r, b.x))

      b.y = b.y + upwardSpeed * 2
      if (b.y > height - b.r) {
        b.y = b.r
        b.x = width * (1 - Math.random() * 0.2)
        b.vx = -3
      }

      b.r = Math.max(3, Math.min(12, b.r + 0.2 * (Math.random() - 0.5)))

      path.arc(x + b.x, y + height - b.y, b.r, 0, 2 * Math.PI)
    }
    poco.blendOutline(fg, 255, Outline.stroke(path, 2), 0, 0)
    poco.end()
  }
}

export const createHeartDecorator: FaceDecoratorFactory<{
  x: number
  y: number
  width?: number
  height?: number
  angle?: number
}> = ({ x, y, width = 40, height = 40, angle = 0.1 }) => {
  let fraction = 0
  const xScale = width / 40
  const yScale = height / 40

  return (tick, poco, { theme }, end = false) => {
    poco.begin(x, y, width * xScale, height * yScale)
    const fg = poco.makeColor(...theme.primary)
    const bg = poco.makeColor(...theme.secondary)
    poco.fillRectangle(bg, x, y, width * xScale, height * yScale)
    if (end) {
      poco.end()
      return
    }
    fraction += (2 * Math.PI) / 100
    const scale = Math.abs(Math.sin(fraction)) / 4 + 0.75
    const path = new Outline.CanvasPath()
    path.moveTo(20, 13)
    path.bezierCurveTo(18, 8, 14, 5, 10, 5)
    path.bezierCurveTo(8, 5, 0, 5, 0, 15)
    path.bezierCurveTo(0, 30, 18, 35, 20, 40)
    path.bezierCurveTo(22, 35, 40, 30, 40, 15)
    path.bezierCurveTo(40, 5, 32, 5, 30, 5)
    path.bezierCurveTo(26, 5, 22, 8, 20, 13)

    poco.blendOutline(
      fg,
      255,
      Outline.fill(path)
        .scale(scale * xScale, scale * yScale)
        .rotate(angle),
      x,
      y,
    )
    poco.end()
  }
}

export const createAngryDecorator: FaceDecoratorFactory<{
  x: number
  y: number
  width?: number
  height?: number
  angle?: number
}> = ({ x, y, width = 40, height = 40, angle = 0.1 }) => {
  let fraction = 0
  const xScale = width / 40
  const yScale = height / 40

  return (tick, poco, { theme }, end = false) => {
    poco.begin(x, y, width * xScale, height * yScale)
    const fg = poco.makeColor(...theme.primary)
    const bg = poco.makeColor(...theme.secondary)
    poco.fillRectangle(bg, x, y, width * xScale, height * yScale)
    if (end) {
      poco.end()
      return
    }
    fraction += (2 * Math.PI) / 100
    const scale = Math.abs(Math.sin(fraction)) / 4 + 0.75

    const path = new Outline.CanvasPath()
    path.moveTo(15, 5)
    path.quadraticCurveTo(20, 20, 5, 15)
    path.moveTo(25, 5)
    path.quadraticCurveTo(20, 20, 35, 15)
    path.moveTo(5, 25)
    path.quadraticCurveTo(20, 20, 15, 35)
    path.moveTo(25, 35)
    path.quadraticCurveTo(20, 20, 35, 25)

    poco.blendOutline(
      fg,
      255,
      Outline.stroke(path, 2)
        .scale(scale * xScale, scale * yScale)
        .rotate(angle),
      x,
      y,
    )
    poco.end()
  }
}

export const createPaleDecorator: FaceDecoratorFactory<{
  x: number
  y: number
  width?: number
  height?: number
  flip?: boolean
}> = ({ x, y, width = 40, height = 40, flip = false }) => {
  const interval = 3000
  const xScale = width / 40
  const yScale = height / 40
  const moveY = yScale * 15

  let time = 0
  return (tick, poco, { theme }, end = false) => {
    poco.begin(x, y, width * xScale, height * yScale + moveY)
    const fg = poco.makeColor(...theme.primary)
    const bg = poco.makeColor(...theme.secondary)
    poco.fillRectangle(bg, x, y, width * xScale, height + moveY)
    if (end) {
      poco.end()
      return
    }

    time = (time + tick) % interval
    const path = new Outline.CanvasPath()
    const fraction = Math.min(time / interval, 1)
    const offsetY = Math.exponentialEaseOut(fraction) * moveY
    path.moveTo(15, 5)
    path.lineTo(15, flip ? 25 : 35)
    path.moveTo(25, 5)
    path.lineTo(25, 30)
    path.moveTo(35, 5)
    path.lineTo(35, flip ? 35 : 25)

    poco.blendOutline(
      fg,
      255,
      Outline.stroke(path, 2 * xScale, Outline.LINECAP_BUTT)
        .scale(xScale, yScale)
        .translate(0, offsetY),
      x,
      y,
    )
    poco.end()
  }
}

export const createSweatDecorator: FaceDecoratorFactory<{
  x: number
  y: number
  width?: number
  height?: number
}> = ({ x, y, width = 40, height = 40 }) => {
  const interval = 3000
  const xScale = width / 40
  const yScale = height / 40
  const moveY = yScale * 15

  let time = 0
  return (tick, poco, { theme }, end = false) => {
    poco.begin(x, y, width * xScale, height * yScale + moveY)
    const fg = poco.makeColor(...theme.primary)
    const bg = poco.makeColor(...theme.secondary)
    poco.fillRectangle(bg, x, y, width * xScale, height * yScale + moveY)
    if (end) {
      poco.end()
      return
    }

    time = (time + tick) % interval
    const path = new Outline.CanvasPath()
    const fraction = Math.min(time / interval, 1)
    const offsetY = Math.exponentialEaseOut(fraction) * moveY

    path.moveTo(20, 30)
    path.bezierCurveTo(30, 30, 30, 15, 20, 0)
    path.bezierCurveTo(10, 15, 10, 30, 20, 30)

    poco.blendOutline(fg, 255, Outline.fill(path).scale(xScale, yScale).translate(0, offsetY), x, y)
    poco.end()
  }
}