// @source https://github.com/NyaaPantsu/nyaa/tree/dev/public/js
// @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&dn=expat.txt Expat

// Switches between themes when a new one is selected

function switchThemes() {
  var themeName = document.getElementById("theme-selector").value
  var head = document.getElementsByTagName("head")[0]
  // Remove the theme in place, it fails if one isn't set
  try {
    head.removeChild(document.getElementById("theme"))
  } catch (err) {}
  // Don't add a node if we don't want extra styling
  if (themeName === "") {
    return
  }
  // Create the new one and put it back
  var newTheme = document.createElement("link")
  newTheme.setAttribute("rel", "stylesheet")
  newTheme.setAttribute("href", "/css/" + themeName + ".css")
  newTheme.setAttribute("id", "theme")
  head.appendChild(newTheme)
}

// Used by spoiler tags
function toggleLayer(elem) {
  if (elem.classList.contains("hide")) {
    elem.classList.remove("hide")
  } else {
    elem.classList.add("hide")
  }
}

function parseAllDates() {
  // Date formatting
  var lang = document.getElementsByTagName("html")[0].getAttribute("lang")
  var ymdOpt = {
    year: "numeric",
    month: "short",
    day: "numeric"
  }
  var hmOpt = {
    hour: "numeric",
    minute: "numeric"
  }

  var list = document.getElementsByClassName("date-short")
  for (var i in list) {
    var e = list[i]
    e.title = new Date(e.innerText).toLocaleString(lang)
    e.innerText = new Date(e.innerText).toLocaleString(lang, ymdOpt)
  }

  var list = document.getElementsByClassName("date-full")
  for (var i in list) {
	if(list.length == 0)
	  break;
    var e = list[i]
    var dateDifference = dateDiff(new Date(e.innerText), new Date())
    
    if(e.className != undefined && e.className.includes("scrape-date"))
      e.title = ((dateDifference.d * 24) + dateDifference.h) + " hours " + dateDifference.m + " minutes ago"
    else
      e.title = dateDifference.d + " days " + dateDifference.h + " hours ago"
	  
    e.innerText = new Date(e.innerText).toLocaleString(lang)
  }
}
function dateDiff( str1, str2 ) {
    var diff = Date.parse( str2 ) - Date.parse( str1 ); 
    return isNaN( diff ) ? NaN : {
        diff : diff,
	m  : Math.floor( diff /     60000 %   60 ),
        h  : -Math.floor( diff /  3600000 %   24 ),
        d  : -Math.floor( diff / 86400000        )
    };
}
parseAllDates()

//called if no Commit cookie is set or if the website has a newer commit than the one in cookie
function resetCookies() {
  var cookies = document.cookie.split(";")
  var excludedCookies = ["mascot", "theme", "theme2", "mascot_url", "lang", "csrf_token"]

  //Remove all cookies but exclude those in the above array
  for (var i = 0; i < cookies.length; i++) {
    var cookieName = (cookies[i].split("=")[0]).trim()
    //Remove spaces because some cookie names have it
    if (excludedCookies.includes(cookieName)) continue
    document.cookie = cookieName + "=;expires=Thu, 01 Jan 1970 00:00:00 UTC;"
  }

  //Set new version in cookie
  document.cookie = "commit=" + commitVersion + ";expires=" + farFutureString()

  var oneHour = new Date()
  oneHour.setTime(oneHour.getTime() + 1 * 3600 * 1500)
  document.cookie = "newVersion=true; expires=" + oneHour.toUTCString()
}


/*Fixed-Navbar offset fix*/
if (document.getElementsByClassName("search-box")[0] !== undefined)
  startupCode()
else
  document.addEventListener("DOMContentLoaded", function (event) {
    startupCode()
  })

 var UserTheme

function startupCode() {
  var shiftWindow = function () {
    scrollBy(0, -70)
  }
  if (location.hash) shiftWindow()
  window.addEventListener("hashchange", shiftWindow)

  if (!document.cookie.includes("commit"))
    resetCookies()
  else {
    var startPos = document.cookie.indexOf("commit") + 7,
      endPos = document.cookie.substring(startPos).indexOf(";"),
      userCommitVersion = endPos == "-1" ? document.cookie.substring(startPos) : document.cookie.substring(startPos, endPos + startPos);
    //Get start and end position of Commit string, need to start searching endPos from version cookie in case it's not the first cookie in the string
    //If endPos is equal to -1, aka if the version cookie is at the very end of the string and doesn't have an ";", the endPos is not used

    if (userCommitVersion != commitVersion)
      resetCookies()
  }

  if (document.cookie.includes("newVersion"))
    document.getElementById("commit").className = document.getElementById("commit").innerHTML != "unknown" ? "new" : "wew";

  document.getElementById("dark-toggle").style.display = "initial"
  document.getElementById("dark-toggle").addEventListener("click", toggleTheme);

  if(document.cookie.includes("theme")) {
    var startPos = document.cookie.indexOf("theme=") + 6
    var endPos = document.cookie.substring(startPos).indexOf(";")
    UserTheme = [endPos == "-1" ? document.cookie.substring(startPos) : document.cookie.substring(startPos, endPos + startPos), "tomorrow"]
	//Get user's default theme and set the alternative one as tomorrow
  }
  else 
	UserTheme = ["g", "tomorrow"]
   //If user has no default theme, set these by default
  
  
  if(document.cookie.includes("theme2")) {
    var startPos = document.cookie.indexOf("theme2=") + 7
    var endPos = document.cookie.substring(startPos).indexOf(";")
    UserTheme[1] = endPos == "-1" ? document.cookie.substring(startPos) : document.cookie.substring(startPos, endPos + startPos)
	//If user already has ran the ToggleTheme() function in the past, we get the value of the second theme (the one the script switches to)
	if(!UserTheme.includes("tomorrow"))
		UserTheme[1] = "tomorrow"
	//If none of the theme are tomorrow, which happens if the user is on dark mode (with theme2 on g.css) and that he switches to classic or g.css in settings, we set the second one as tomorrow
  }
  else {
    if(UserTheme[0] == UserTheme[1])
	  UserTheme[1] = "g"
    //If tomorrow is twice in UserTheme, which happens when the user already has tomorrow as his default theme and toggle the dark mode for the first time, we set the second theme as g.css
    document.cookie = "theme2=" + UserTheme[1] + ";path=/;domain=pantsu.cat;expires=" + farFutureString()
    //Set cookie for future theme2 uses
  }
  
}

function toggleTheme(e) {
  var CurrentTheme = document.getElementById("theme").href
  CurrentTheme = CurrentTheme.substring(CurrentTheme.indexOf("/css/") + 5, CurrentTheme.indexOf(".css"))
  CurrentTheme = (CurrentTheme == UserTheme[0] ? UserTheme[1] : UserTheme[0])

  document.getElementById("theme").href = "/css/" + CurrentTheme + ".css";
  
  var farFuture = farFutureString()
  document.cookie = "theme=" + CurrentTheme + ";path=/;domain=pantsu.cat;expires=" + farFuture
  document.cookie = "theme2=" + (CurrentTheme == UserTheme[0] ? UserTheme[1] : UserTheme[0]) + ";path=/;domain=pantsu.cat;expires=" + farFuture
  e.preventDefault()
}

function playVoice() {
  var mascotAudio = document.getElementById("explosion") || document.getElementById("nyanpassu") || document.getElementById("nyanpassu2") || document.getElementById("kawaii")
  if (mascotAudio !== undefined) {
    mascotAudio.volume = 0.2
    mascotAudio.play()
  } else {
    console.log("Your mascot doesn't support yet audio files!")
  }
}

document.getElementsByClassName("form-input refine")[0].addEventListener("click", function (e) {
  if(document.getElementsByClassName("form-input search-box")[0].value == "" || location.pathname != "/")
  {
    document.getElementsByClassName("box refine")[0].style.display = document.getElementsByClassName("box refine")[0].style.display == "none" ? "block" : "none"
    if (document.getElementsByClassName("form-input refine-searchbox")[0].value != document.getElementsByClassName("form-input search-box")[0].value)
      document.getElementsByClassName("form-input refine-searchbox")[0].value = document.getElementsByClassName("form-input search-box")[0].value
    if (document.getElementsByClassName("form-input refine-category")[0].selectedIndex != document.getElementsByClassName("form-input form-category")[0].selectedIndex)
      document.getElementsByClassName("form-input refine-category")[0].selectedIndex = document.getElementsByClassName("form-input form-category")[0].selectedIndex
    if (document.getElementsByClassName("box refine")[0].style.display == "block")
      scrollTo(0, 0)
    e.preventDefault()
  }
})

function humanFileSize(bytes, si) {
  var k = si ? 1000 : 1024
  var i = ~~(Math.log(bytes) / Math.log(k))
  return i == 0 ? bytes + " B" : (bytes / Math.pow(k, i)).toFixed(1) + " " + "KMGTPEZY" [i - 1] + (si ? "" : "i") + "B"
}

function farFutureString() {
  var farFuture = new Date()
  farFuture.setTime(farFuture.getTime() + 50 * 36000 * 15000)
  return farFuture.toUTCString()
}
// @license-end