(function () {
  var ctx = window.__EDITOR__ || { folder: '', video: null }
  var folder = ctx.folder
  var video = ctx.video

  var dropZone = document.getElementById('dropZone')
  var fileInput = document.getElementById('fileInput')
  var ytUrl = document.getElementById('ytUrl')
  var ytProbeBtn = document.getElementById('ytProbeBtn')
  var ytStartBtn = document.getElementById('ytStartBtn')
  var probeInfo = document.getElementById('probeInfo')
  var dlProgress = document.getElementById('downloadProgress')
  var uploadStatus = document.getElementById('uploadStatus')

  var videoPanel = document.getElementById('videoPanel')
  var editVideo = document.getElementById('editVideo')
  var titleInput = document.getElementById('titleInput')
  var startSec = document.getElementById('startSec')
  var endSec = document.getElementById('endSec')
  var saveBtn = document.getElementById('saveBtn')

  // 드래그&드롭
  ;['dragenter', 'dragover'].forEach(function (evt) {
    dropZone.addEventListener(evt, function (e) {
      e.preventDefault(); e.stopPropagation()
      dropZone.classList.add('dragOver')
    })
  })
  ;['dragleave', 'drop'].forEach(function (evt) {
    dropZone.addEventListener(evt, function (e) {
      e.preventDefault(); e.stopPropagation()
      dropZone.classList.remove('dragOver')
    })
  })
  dropZone.addEventListener('drop', function (e) {
    var files = e.dataTransfer && e.dataTransfer.files
    if (files && files.length > 0) uploadFile(files[0])
  })
  fileInput.addEventListener('change', function () {
    if (fileInput.files && fileInput.files[0]) uploadFile(fileInput.files[0])
  })

  function uploadFile(file) {
    var form = new FormData()
    form.append('file', file)
    form.append('title', titleInput.value || file.name)
    uploadStatus.textContent = '업로드 중...'
    var xhr = new XMLHttpRequest()
    xhr.open('POST', '/op/folder/' + encodeURIComponent(folder) + '/video/upload')
    xhr.upload.addEventListener('progress', function (e) {
      if (e.lengthComputable) {
        var pct = Math.round((e.loaded / e.total) * 100)
        uploadStatus.textContent = '업로드 ' + pct + '%'
      }
    })
    xhr.onload = function () {
      try {
        var res = JSON.parse(xhr.responseText)
        if (res.ok) {
          location.href = '/op/folder/' + encodeURIComponent(folder) + '/video/editor?id=' + encodeURIComponent(res.videoId)
        } else {
          uploadStatus.textContent = '업로드 실패: ' + (res.message || '')
        }
      } catch (err) {
        uploadStatus.textContent = '업로드 실패'
      }
    }
    xhr.onerror = function () { uploadStatus.textContent = '업로드 실패 (네트워크)' }
    xhr.send(form)
  }

  // YouTube probe
  ytProbeBtn.addEventListener('click', function () {
    var url = ytUrl.value.trim()
    if (!url) return
    probeInfo.textContent = '확인 중...'
    ytStartBtn.disabled = true
    fetch('/op/folder/' + encodeURIComponent(folder) + '/video/youtube/probe', {
      method: 'POST',
      headers: { 'content-type': 'application/json' },
      body: JSON.stringify({ url: url })
    }).then(function (r) { return r.json() }).then(function (j) {
      if (!j.ok) {
        probeInfo.textContent = j.message || '확인 실패'
        return
      }
      var p = j.probe
      var parts = [
        '제목: ' + p.title,
        '길이: ' + formatDuration(p.durationSec)
      ]
      if (p.filesizeApprox) parts.push('대략 ' + formatSize(p.filesizeApprox))
      if (p.etaSec) parts.push('예상 다운로드: ' + formatDuration(p.etaSec))
      probeInfo.textContent = parts.join(' · ')
      if (p.warnOver5min) {
        if (!window.confirm('가져오는 데 5분 이상 걸릴 수 있습니다. 진행할까요?\n(다른 페이지에서 작업해도 백그라운드로 계속 진행됩니다.)')) {
          return
        }
      }
      if (!titleInput.value) titleInput.value = p.title
      ytStartBtn.disabled = false
    }).catch(function (e) {
      probeInfo.textContent = '확인 실패: ' + e.message
    })
  })

  ytStartBtn.addEventListener('click', function () {
    var url = ytUrl.value.trim()
    if (!url) return
    fetch('/op/folder/' + encodeURIComponent(folder) + '/video/youtube/start', {
      method: 'POST',
      headers: { 'content-type': 'application/json' },
      body: JSON.stringify({ url: url, title: titleInput.value })
    }).then(function (r) { return r.json() }).then(function (j) {
      if (!j.ok) {
        probeInfo.textContent = j.message || '시작 실패'
        return
      }
      dlProgress.hidden = false
      probeInfo.textContent = '백그라운드 다운로드 시작...'
      pollJob(j.jobId, j.videoId)
    })
  })

  function pollJob(jobId, videoId) {
    fetch('/op/job/' + encodeURIComponent(jobId)).then(function (r) { return r.json() }).then(function (j) {
      if (!j.ok) {
        probeInfo.textContent = j.message || '작업을 찾을 수 없음'
        return
      }
      var job = j.job
      dlProgress.value = job.progress
      probeInfo.textContent = job.message
      if (job.status === 'done') {
        location.href = '/op/folder/' + encodeURIComponent(folder) + '/video/editor?id=' + encodeURIComponent(videoId)
      } else if (job.status === 'error') {
        probeInfo.textContent = '실패: ' + (job.error || '')
      } else {
        setTimeout(function () { pollJob(jobId, videoId) }, 1500)
      }
    })
  }

  // 트림 컨트롤 - "현재 시점" 버튼
  document.querySelectorAll('[data-set-current]').forEach(function (btn) {
    btn.addEventListener('click', function () {
      if (!editVideo) return
      var which = btn.getAttribute('data-set-current')
      var t = editVideo.currentTime.toFixed(2)
      if (which === 'start') startSec.value = t
      else endSec.value = t
    })
  })

  // 저장
  saveBtn.addEventListener('click', function () {
    if (!video) { alert('먼저 영상을 추가하세요.'); return }
    var payload = {
      id: video.id,
      title: titleInput.value,
      startSec: Number(startSec.value || 0),
      endSec: endSec.value === '' ? null : Number(endSec.value)
    }
    saveBtn.disabled = true
    saveBtn.textContent = '저장 중...'
    fetch('/op/folder/' + encodeURIComponent(folder) + '/video/save', {
      method: 'POST',
      headers: { 'content-type': 'application/json' },
      body: JSON.stringify(payload)
    }).then(function (r) { return r.json() }).then(function (j) {
      saveBtn.disabled = false
      saveBtn.textContent = '저장'
      if (j.ok) {
        alert(j.note || '저장 완료')
        location.href = '/op/folder/' + encodeURIComponent(folder)
      } else {
        alert(j.message || '저장 실패')
      }
    })
  })

  function formatDuration(sec) {
    if (!sec || sec <= 0) return '0초'
    var s = Math.round(sec)
    var h = Math.floor(s / 3600); s = s % 3600
    var m = Math.floor(s / 60); s = s % 60
    if (h > 0) return h + '시간 ' + m + '분 ' + s + '초'
    if (m > 0) return m + '분 ' + s + '초'
    return s + '초'
  }
  function formatSize(bytes) {
    if (bytes < 1024) return bytes + ' B'
    if (bytes < 1024 * 1024) return (bytes / 1024).toFixed(1) + ' KB'
    if (bytes < 1024 * 1024 * 1024) return (bytes / 1024 / 1024).toFixed(1) + ' MB'
    return (bytes / 1024 / 1024 / 1024).toFixed(2) + ' GB'
  }
})()