import $check_off from './img/check_off.svg?raw'
import $check_on from './img/check_on.svg?raw'
import $config from './img/config.svg?raw'
import $mode_0_off from './img/mode_0_off.svg?raw'
import $mode_0_on from './img/mode_0_on.svg?raw'
import $mode_1_off from './img/mode_1_off.svg?raw'
import $mode_1_on from './img/mode_1_on.svg?raw'
import $mode_2_off from './img/mode_2_off.svg?raw'
import $mode_2_on from './img/mode_2_on.svg?raw'
import $off from './img/off.svg?raw'
import $on from './img/on.svg?raw'
import $style from './img/style.svg?raw'
import style from './style.less?inline'

export default class Setting {
  constructor(art, danmuku) {
    this.art = art
    this.danmuku = danmuku
    this.utils = art.constructor.utils

    const { setStyle } = this.utils
    const { $controlsCenter } = art.template
    setStyle($controlsCenter, 'display', 'flex')

    this.template = {
      $controlsCenter,
      $mount: $controlsCenter,
      $danmuku: null,
      $toggle: null,
      $config: null,
      $configPanel: null,
      $configModes: null,
      $style: null,
      $stylePanel: null,
      $styleModes: null,
      $colors: null,
      $opacitySlider: null,
      $opacityValue: null,
      $marginSlider: null,
      $marginValue: null,
      $fontSizeSlider: null,
      $fontSizeValue: null,
      $speedSlider: null,
      $speedValue: null,
      $input: null,
      $send: null,
    }

    this.slider = {
      opacity: null,
      margin: null,
      fontSize: null,
      speed: null,
    }

    this.emitting = false
    this.isLock = false
    this.timer = null

    this.createTemplate()
    this.createSliders()
    this.createEvents()

    this.mount(this.option.mount)

    art.on('resize', () => this.resize())
    art.on('fullscreen', state => this.onFullscreen(state))
    art.on('fullscreenWeb', state => this.onFullscreen(state))

    art.proxy(this.template.$config, 'mouseenter', () => {
      this.onMouseEnter({
        $control: this.template.$config,
        $panel: this.template.$configPanel,
      })
    })

    art.proxy(this.template.$style, 'mouseenter', () => {
      this.onMouseEnter({
        $control: this.template.$style,
        $panel: this.template.$stylePanel,
      })
    })
  }

  static get icons() {
    return {
      $on,
      $off,
      $config,
      $style,
      $mode_0_off,
      $mode_0_on,
      $mode_1_off,
      $mode_1_on,
      $mode_2_off,
      $mode_2_on,
      $check_on,
      $check_off,
    }
  }

  get option() {
    return this.danmuku.option
  }

  get outside() {
    return this.template.$mount !== this.template.$controlsCenter
  }

  get TEMPLATE() {
    const { option } = this
    return `
            <div class="apd-toggle">
                ${$on}${$off}
            </div>
            <div class="apd-config">
                ${$config}
                <div class="apd-config-panel">
                    <div class="apd-config-panel-inner">
                        <div class="apd-config-mode">
                            按类型屏蔽
                            <div class="apd-modes">
                                <div data-mode="0" class="apd-mode">
                                    ${$mode_0_off}${$mode_0_on}
                                    <div>滚动</div>
                                </div>
                                <div data-mode="1" class="apd-mode">
                                    ${$mode_1_off}${$mode_1_on}
                                    <div>顶部</div>
                                </div>
                                <div data-mode="2" class="apd-mode">
                                    ${$mode_2_off}${$mode_2_on}
                                    <div>底部</div>
                                </div>
                            </div>
                        </div>
                        <div class="apd-config-other">
                            <div class="apd-other apd-anti-overlap">
                                ${$check_on}${$check_off}
                                防止弹幕重叠
                            </div>
                            <div class="apd-other apd-sync-video">
                                ${$check_on}${$check_off}
                                同步视频速度
                            </div>
                        </div>
                        <div class="apd-config-slider apd-config-opacity">
                            不透明度
                            <div class="apd-slider"></div>
                            <div class="apd-value">未知</div>
                        </div>
                        <div class="apd-config-slider apd-config-margin">
                            显示区域
                            <div class="apd-slider"></div>
                            <div class="apd-value">未知</div>
                        </div>
                        <div class="apd-config-slider apd-config-fontSize">
                            弹幕字号
                            <div class="apd-slider"></div>
                            <div class="apd-value">未知</div>
                        </div>
                        <div class="apd-config-slider apd-config-speed">
                            弹幕速度
                            <div class="apd-slider"></div>
                            <div class="apd-value">未知</div>
                        </div>
                    </div>
                </div>
            </div>
            <div class="apd-emitter">
                <div class="apd-style">
                    ${$style}
                    <div class="apd-style-panel">
                        <div class="apd-style-panel-inner">
                            <div class="apd-style-mode">
                                模式
                                <div class="apd-modes">
                                    <div data-mode="0" class="apd-mode">
                                        ${$mode_0_on}
                                        <div>滚动</div>
                                    </div>
                                    <div data-mode="1" class="apd-mode">
                                        ${$mode_1_on}
                                        <div>顶部</div>
                                    </div>
                                    <div data-mode="2" class="apd-mode">
                                        ${$mode_2_on}
                                        <div>底部</div>
                                    </div>
                                </div>
                            </div>
                            <div class="apd-style-color">
                                颜色
                                <div class="apd-colors">
                                    ${this.COLOR.map(color => `<div data-color="${color}" class="apd-color" style="background-color: ${color}"></div>`).join('')}
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
                <input class="apd-input" placeholder="发个友善的弹幕见证当下" autocomplete="off" maxLength="${option.maxLength}" />
                <div class="apd-send">发送</div>
            </div>
        `
  }

  get OPACITY() {
    return {
      min: 0,
      max: 100,
      steps: [],
      ...this.option.OPACITY,
    }
  }

  get FONT_SIZE() {
    return {
      min: 12,
      max: 120,
      steps: [],
      ...this.option.FONT_SIZE,
    }
  }

  get MARGIN() {
    return {
      min: 0,
      max: 3,
      steps: [
        {
          name: '1/4',
          value: [10, '75%'],
        },
        {
          name: '半屏',
          value: [10, '50%'],
        },
        {
          name: '3/4',
          value: [10, '25%'],
        },
        {
          name: '满屏',
          value: [10, 10],
        },
      ],
      ...this.option.MARGIN,
    }
  }

  get SPEED() {
    return {
      min: 0,
      max: 4,
      steps: [
        {
          name: '极慢',
          value: 10,
        },
        {
          name: '较慢',
          value: 7.5,
          hide: true,
        },
        {
          name: '适中',
          value: 5,
        },
        {
          name: '较快',
          value: 2.5,
          hide: true,
        },
        {
          name: '极快',
          value: 1,
        },
      ],
      ...this.option.SPEED,
    }
  }

  get COLOR() {
    return this.option.COLOR.length
      ? this.option.COLOR
      : [
          '#FE0302',
          '#FF7204',
          '#FFAA02',
          '#FFD302',
          '#FFFF00',
          '#A0EE00',
          '#00CD00',
          '#019899',
          '#4266BE',
          '#89D5FF',
          '#CC0273',
          '#222222',
          '#9B9B9B',
          '#FFFFFF',
        ]
  }

  query(selector) {
    const { query } = this.utils
    const { $danmuku } = this.template
    return query(selector, $danmuku)
  }

  append(el, target) {
    const { append } = this.utils
    const children = [...el.children]
    if (children.includes(target))
      return
    append(el, target)
  }

  setData(key, value) {
    const { $player } = this.art.template
    const { $mount } = this.template
    $player.dataset[key] = value
    if (this.outside) {
      $mount.dataset[key] = value
    }
  }

  createTemplate() {
    const { createElement, tooltip } = this.utils

    const $danmuku = createElement('div')
    $danmuku.className = 'artplayer-plugin-danmuku'
    $danmuku.innerHTML = this.TEMPLATE

    this.template.$danmuku = $danmuku
    this.template.$toggle = this.query('.apd-toggle')
    this.template.$config = this.query('.apd-config')
    this.template.$configPanel = this.query('.apd-config-panel')
    this.template.$configModes = this.query('.apd-config-mode .apd-modes')
    this.template.$style = this.query('.apd-style')
    this.template.$stylePanel = this.query('.apd-style-panel')
    this.template.$styleModes = this.query('.apd-style-mode .apd-modes')
    this.template.$colors = this.query('.apd-colors')
    this.template.$antiOverlap = this.query('.apd-anti-overlap')
    this.template.$syncVideo = this.query('.apd-sync-video')
    this.template.$opacitySlider = this.query('.apd-config-opacity .apd-slider')
    this.template.$opacityValue = this.query('.apd-config-opacity .apd-value')
    this.template.$marginSlider = this.query('.apd-config-margin .apd-slider')
    this.template.$marginValue = this.query('.apd-config-margin .apd-value')
    this.template.$fontSizeSlider = this.query('.apd-config-fontSize .apd-slider')
    this.template.$fontSizeValue = this.query('.apd-config-fontSize .apd-value')
    this.template.$speedSlider = this.query('.apd-config-speed .apd-slider')
    this.template.$speedValue = this.query('.apd-config-speed .apd-value')
    this.template.$input = this.query('.apd-input')
    this.template.$send = this.query('.apd-send')

    const { $toggle } = this.template

    this.art.on('artplayerPluginDanmuku:show', () => {
      tooltip($toggle, '关闭弹幕')
    })

    this.art.on('artplayerPluginDanmuku:hide', () => {
      tooltip($toggle, '打开弹幕')
    })
  }

  createEvents() {
    const { $toggle, $configModes, $styleModes, $colors, $antiOverlap, $syncVideo, $send, $input } = this.template

    this.art.proxy($toggle, 'click', () => {
      this.danmuku.config({
        visible: !this.option.visible,
      })
      this.reset()
    })

    this.art.proxy($configModes, 'click', (event) => {
      const $mode = event.target.closest('.apd-mode')
      if (!$mode)
        return
      const mode = Number($mode.dataset.mode)
      if (this.option.modes.includes(mode)) {
        this.danmuku.config({
          modes: this.option.modes.filter(m => m !== mode),
        })
      }
      else {
        this.danmuku.config({
          modes: [...this.option.modes, mode],
        })
      }
      this.reset()
    })

    this.art.proxy($antiOverlap, 'click', () => {
      this.danmuku.config({
        antiOverlap: !this.option.antiOverlap,
      })
      this.reset()
    })

    this.art.proxy($syncVideo, 'click', () => {
      this.danmuku.config({
        synchronousPlayback: !this.option.synchronousPlayback,
      })
      this.reset()
    })

    this.art.proxy($styleModes, 'click', (event) => {
      const $mode = event.target.closest('.apd-mode')
      if (!$mode)
        return
      const mode = Number($mode.dataset.mode)
      this.danmuku.config({
        mode,
      })
      this.reset()
    })

    this.art.proxy($colors, 'click', (event) => {
      const $color = event.target.closest('.apd-color')
      if (!$color)
        return
      this.danmuku.config({
        color: $color.dataset.color,
      })
      this.reset()
    })

    this.art.proxy($send, 'click', () => this.emit())

    this.art.proxy($input, 'keypress', (event) => {
      if (event.key === 'Enter') {
        event.preventDefault()
        this.emit()
      }
    })
  }

  createSliders() {
    this.slider.opacity = this.createSlider({
      ...this.OPACITY,
      container: this.template.$opacitySlider,
      findIndex: () => {
        return Math.round(this.option.opacity * 100)
      },
      onChange: (index) => {
        const { $opacityValue } = this.template
        $opacityValue.textContent = `${index}%`
        this.danmuku.config({
          opacity: index / 100,
        })
      },
    })

    this.slider.margin = this.createSlider({
      ...this.MARGIN,
      container: this.template.$marginSlider,
      findIndex: () => {
        return this.MARGIN.steps.findIndex(
          item => item.value[0] === this.option.margin[0] && item.value[1] === this.option.margin[1],
        )
      },
      onChange: (index) => {
        const margin = this.MARGIN.steps[index]
        if (!margin)
          return
        const { $marginValue } = this.template
        $marginValue.textContent = margin.name
        this.danmuku.config({
          margin: margin.value,
        })
      },
    })

    this.slider.fontSize = this.createSlider({
      ...this.FONT_SIZE,
      container: this.template.$fontSizeSlider,
      findIndex: () => {
        return this.danmuku.fontSize
      },
      onChange: (index) => {
        const { $fontSizeValue } = this.template
        $fontSizeValue.textContent = `${index}px`
        if (index === this.danmuku.fontSize)
          return
        this.danmuku.config({
          fontSize: index,
        })
      },
    })

    this.slider.speed = this.createSlider({
      ...this.SPEED,
      container: this.template.$speedSlider,
      findIndex: () => {
        return this.SPEED.steps.findIndex(item => item.value === this.option.speed)
      },
      onChange: (index) => {
        const speed = this.SPEED.steps[index]
        if (!speed)
          return
        const { $speedValue } = this.template
        $speedValue.textContent = speed.name
        this.danmuku.config({
          speed: speed.value,
        })
      },
    })
  }

  createSlider({ min, max, container, findIndex, onChange, steps = [] }) {
    const { query, clamp, setStyle } = this.utils

    setStyle(container, 'touch-action', 'none')

    container.innerHTML = `
            <div class="apd-slider-line">
                <div class="apd-slider-points">
                    ${steps.map(() => `<div class="apd-slider-point"></div>`).join('')}
                </div>
                <div class="apd-slider-progress"></div>
            </div>
            <div class="apd-slider-dot"></div>
            <div class="apd-slider-steps">
                ${steps.map(step => (step.hide ? '' : `<div class="apd-slider-step">${step.name}</div>`)).join('')}
            </div>
        `

    const $dot = query('.apd-slider-dot', container)
    const $progress = query('.apd-slider-progress', container)

    let isDroging = false

    function reset(index = findIndex()) {
      if (index < min || index > max)
        return
      const percentage = (index - min) / (max - min)
      $dot.style.left = `${percentage * 100}%`
      if (steps.length === 0) {
        $progress.style.width = $dot.style.left
      }
      onChange(index)
    }

    function updateLeft(event) {
      const { top, height, left, width } = container.getBoundingClientRect()
      if (this.art.isRotate) {
        const value = clamp(event.clientY - top, 0, height)
        const index = Math.round((value / height) * (max - min) + min)
        reset(index)
      }
      else {
        const value = clamp(event.clientX - left, 0, width)
        const index = Math.round((value / width) * (max - min) + min)
        reset(index)
      }
    }

    this.art.proxy(container, 'click', (event) => {
      updateLeft.call(this, event)
    })

    this.art.proxy(container, 'pointerdown', (event) => {
      isDroging = event.button === 0
    })

    this.art.on('document:pointermove', (event) => {
      if (isDroging) {
        updateLeft.call(this, event)
      }
    })

    this.art.on('document:pointerup', (event) => {
      if (isDroging) {
        isDroging = false
        updateLeft.call(this, event)
      }
    })

    return { reset }
  }

  onFullscreen(state) {
    const { $danmuku, $controlsCenter, $mount } = this.template
    if (this.outside) {
      if (state) {
        this.append($controlsCenter, $danmuku)
      }
      else {
        this.append($mount, $danmuku)
      }
    }
    else {
      this.append($controlsCenter, $danmuku)
    }
  }

  onMouseEnter({ $control, $panel }) {
    const { $player } = this.art.template
    const controlRect = $control.getBoundingClientRect()
    const panelRect = $panel.getBoundingClientRect()
    const playerRect = $player.getBoundingClientRect()

    const half = panelRect.width / 2 - controlRect.width / 2
    const left = playerRect.left - (controlRect.left - half)
    const right = controlRect.right + half - playerRect.right

    if (left > 0) {
      $panel.style.left = `${-half + left}px`
    }
    else if (right > 0) {
      $panel.style.left = `${-half - right}px`
    }
    else {
      $panel.style.left = `${-half}px`
    }
  }

  async emit() {
    const { $input } = this.template

    const text = $input.value.trim()
    if (!text.length)
      return
    if (this.isLock)
      return
    if (this.emitting)
      return

    const danmu = {
      text,
      mode: this.option.mode,
      color: this.option.color,
      time: this.art.currentTime,
    }

    try {
      this.emitting = true
      const state = await this.option.beforeEmit(danmu)
      this.emitting = false

      if (state !== true)
        return

      danmu.border = true
      delete danmu.time
      this.danmuku.emit(danmu)
      $input.value = ''

      this.lock()
    }
    catch (error) {
      console.error('Error emitting danmuku:', error)
      this.emitting = false
    }
  }

  lock() {
    const { addClass } = this.utils
    const { $send } = this.template

    this.isLock = true
    let time = this.option.lockTime
    $send.textContent = time
    addClass($send, 'apd-lock')

    const loop = () => {
      this.timer = setTimeout(() => {
        if (time === 0) {
          this.unlock()
        }
        else {
          time -= 1
          $send.textContent = time
          loop()
        }
      }, 1000)
    }

    loop()
  }

  unlock() {
    const { removeClass } = this.utils
    const { $send } = this.template
    clearTimeout(this.timer)
    this.isLock = false
    $send.textContent = '发送'
    removeClass($send, 'apd-lock')
  }

  resize() {
    if (this.outside)
      return
    if (this.art.fullscreen)
      return
    if (this.art.fullscreenWeb)
      return
    const { $player, $controlsCenter } = this.art.template
    const { $danmuku } = this.template
    if (this.art.width < this.option.width) {
      this.append($player, $danmuku)
    }
    else {
      this.append($controlsCenter, $danmuku)
    }
  }

  reset() {
    const { inverseClass, tooltip } = this.utils
    const { $toggle, $colors } = this.template

    this.slider.opacity.reset()
    this.slider.margin.reset()
    this.slider.fontSize.reset()
    this.slider.speed.reset()

    this.setData('danmukuVisible', this.option.visible)
    this.setData('danmukuMode', this.option.mode)
    this.setData('danmukuColor', this.option.color)
    this.setData('danmukuMode0', this.option.modes.includes(0))
    this.setData('danmukuMode1', this.option.modes.includes(1))
    this.setData('danmukuMode2', this.option.modes.includes(2))
    this.setData('danmukuAntiOverlap', this.option.antiOverlap)
    this.setData('danmukuSyncVideo', this.option.synchronousPlayback)
    this.setData('danmukuTheme', this.option.theme)
    this.setData('danmukuEmitter', this.option.emitter)

    const colors = $colors.children
    const $color = Array.from(colors).find(item => item.dataset.color === this.option.color.toUpperCase())
    $color && inverseClass($color, 'apd-active')

    tooltip($toggle, this.option.visible ? '关闭弹幕' : '打开弹幕')

    this.resize()
  }

  mount(target) {
    const { errorHandle } = this.utils
    const $el = typeof target === 'string' ? document.querySelector(target) : target
    errorHandle($el, `Can not find the mount point: ${target}`)
    this.append($el, this.template.$danmuku)
    this.template.$mount = $el
    this.reset()
  }
}

if (typeof document !== 'undefined') {
  const id = 'artplayer-plugin-danmuku'
  let $style = document.getElementById(id)
  if (!$style) {
    $style = document.createElement('style')
    $style.id = id
    if (document.readyState === 'loading') {
      document.addEventListener('DOMContentLoaded', () => {
        document.head.appendChild($style)
      })
    }
    else {
      (document.head || document.documentElement).appendChild($style)
    }
  }
  $style.textContent = style
}