// dom refs
const video=document.getElementById("video")
const play=document.getElementById("play")
const mute=document.getElementById("mute")
const seek=document.getElementById("seek")
const volume=document.getElementById("volume")
const controls=document.getElementById("controls")
const player=document.getElementById("player")
const tapUnmute=document.getElementById("tapUnmute")
const rotate=document.getElementById("rotate")

// player state
let hideTimer,resizeTimer,lastSeek=-1
let controlsVisible=false
let autoplayStartedMuted=true
let rotated=false

// device check
const isMobile=matchMedia("(pointer:coarse)").matches||window.innerWidth<=768
controls.classList.add(isMobile?"mobile-mode":"desktop-mode")

// ui sync
const syncPlayState=()=>play.textContent=video.paused?"x":"▶"
const syncRotateState=()=>rotate.textContent=rotated?"⟲":"⟳"

function syncMuteState(){
  mute.textContent=video.muted||video.volume===0?"u":"a"
  volume.value=video.muted?0:video.volume
}

// controls
function showControls(){
  if(!controlsVisible){
    controls.classList.add("visible")
    controlsVisible=true
  }
  clearTimeout(hideTimer)
  hideTimer=setTimeout(()=>{
    controls.classList.remove("visible")
    controlsVisible=false
  },isMobile?2200:1700)
}

// prompt
const showUnmutePrompt=show=>tapUnmute.classList.toggle("visible",!!show)

// layout
function applyVideoLayout(){
  if(rotated){
    video.style.objectFit="contain"
    video.style.transform="translateZ(0) rotate(90deg) scale(1.15)"
    return
  }

  const landscape=video.videoWidth&&video.videoHeight?video.videoWidth>video.videoHeight:true
  const portraitScreen=window.innerHeight>window.innerWidth

  video.style.objectFit=isMobile&&landscape&&portraitScreen?"contain":"cover"
  video.style.transform="translateZ(0) scale(1.01)"
}

// rotate
function toggleRotate(){
  rotated=!rotated
  syncRotateState()
  applyVideoLayout()
  showControls()
}

// autoplay
async function startPlayback(){
  video.volume=1
  video.muted=true

  try{
    await video.play()
  }catch(e){
    console.error(e)
  }

  showUnmutePrompt(true)
  syncPlayState()
  syncMuteState()
  syncRotateState()
}

// audio enable
function enableSoundAndPlay(){
  video.muted=false
  if(video.volume===0)video.volume=1
  video.play().catch(()=>{})
  autoplayStartedMuted=false
  showUnmutePrompt(false)
  syncMuteState()
  syncPlayState()
}

// video events
video.addEventListener("play",()=>{syncPlayState();showControls()})
video.addEventListener("pause",()=>{syncPlayState();showControls()})
video.addEventListener("ended",()=>{syncPlayState();showControls()})

video.addEventListener("loadedmetadata",()=>{
  applyVideoLayout()

  requestIdleCallback?.(()=>{
    const t=document.querySelector(".video-text")
    if(t)t.textContent=""
  })

  syncMuteState()
  syncPlayState()
})

video.addEventListener("timeupdate",()=>{
  if(!video.duration)return
  const value=((video.currentTime/video.duration)*100)|0
  if(value===lastSeek)return
  lastSeek=value
  seek.value=value
})

// controls
play.addEventListener("click",async e=>{
  e.stopPropagation()
  if(video.paused){
    try{await video.play()}catch{}
  }else{
    video.pause()
  }
})

mute.addEventListener("click",e=>{
  e.stopPropagation()

  if(video.muted||video.volume===0){
    video.muted=false
    if(video.volume===0)video.volume=.5
    autoplayStartedMuted=false
    showUnmutePrompt(false)
  }else{
    video.muted=true
  }

  syncMuteState()
})

seek.addEventListener("input",e=>{
  e.stopPropagation()
  if(video.duration)video.currentTime=(e.target.value/100)*video.duration
})

volume.addEventListener("input",e=>{
  e.stopPropagation()
  video.volume=parseFloat(e.target.value)
  video.muted=video.volume===0

  if(video.volume>0){
    autoplayStartedMuted=false
    showUnmutePrompt(false)
  }

  syncMuteState()
})

rotate.addEventListener("click",e=>{
  e.stopPropagation()
  toggleRotate()
})

tapUnmute.addEventListener("click",e=>{
  e.stopPropagation()
  enableSoundAndPlay()
})

controls.addEventListener("click",e=>e.stopPropagation())

player.addEventListener("click",()=>{
  showControls()
  if(autoplayStartedMuted&&video.muted)enableSoundAndPlay()
},{passive:true})

player.addEventListener("mousemove",showControls)
player.addEventListener("mouseenter",showControls)
player.addEventListener("touchstart",showControls,{passive:true})

// resize
window.addEventListener("resize",()=>{
  clearTimeout(resizeTimer)
  resizeTimer=setTimeout(applyVideoLayout,100)
})

window.addEventListener("orientationchange",applyVideoLayout)

// init
syncPlayState()
syncMuteState()
syncRotateState()
startPlayback()