# @name    Last.fm
# @desc    Total scrobble count of a Last.fm profile
# @author  Hank_the_Tank / Codex
# @version 1.5
# @config  user    text   "Profile name" default="YOUR_USERNAME" maxlen=32
# @config  api_key text   "API key"      default="YOUR_API_KEY" maxlen=64 help="Create one at last.fm/api/account/create"
# @config  icon    text   "Icon ID"      default="11667" maxlen=16 help="LaMetric icon ID; leave empty for the built-in fallback"
# @config  every   number "Refresh"      default=15 min=1 max=60 unit=min
# @config  tint    color  "Colour"       default=#D51007
# @config  speed   slider "Gradient speed" default=40 min=0 max=100 unit=%

class LastFM
  var url,user,key,ic,tint,pal,gspeed,period
  var count,label,full,err
  var ticks,busy

  def init()
    self.user=store.get("user")
    self.key=store.get("api_key")
    self.ic=store.get("icon")
    self.tint=store.get("tint")
    self.pal=[self.tint,0xFFFFFF,self.tint]   # red-white-red, built once
    self.gspeed=store.get("speed")/100.0      # 0..1 passes per second
    self.url="https://ws.audioscrobbler.com/2.0/?method=user.getinfo&user="+
             self.user+"&api_key="+self.key+"&format=json"
    self.period=store.get("every")*60

    self.count=store.get("who")==self.user ? store.get("n") : nil
    self.label=self.count==nil ? nil : self.human(self.count)
    self.full=self.count==nil ? nil : str(self.count)
    self.err=self.key=="YOUR_API_KEY" || self.key==""
    self.ticks=self.err ? self.period : 15
    self.busy=false
  end

  def human(n)
    if n<1000 return str(n) end
    var d=1000
    var suf="K"
    if n>=1000000000
      d=1000000000
      suf="B"
    elif n>=1000000
      d=1000000
      suf="M"
    end
    var v=n/(d+0.0)
    if v>=10 return str(round(v))+suf end
    var t=round(v*10)
    return str(int(t/10))+"."+str(t%10)+suf
  end

  def on_body(body,status)
    self.busy=false
    if status!=200 || body==nil
      self.err=true
      return
    end
    var m=re.search("(\\d+)",body)
    if m==nil
      self.err=true
      return
    end
    var n=num(m[1])
    if n==nil return end
    self.err=false
    if n==self.count return end
    self.count=n
    self.full=str(n)
    self.label=self.human(n)
    store.set("n",n)
    store.set("who",self.user)
  end

  def loop()
    if self.ticks<=0
      if !self.busy
        self.ticks=self.period
        self.busy=true
        http.get(self.url,/ b,st -> self.on_body(b,st),
                 {'find':"\"playcount\":",'keep':32})
      end
    end
    self.ticks-=1
  end

  def draw()
    clear()
    if self.ic=="" || !icon(self.ic,0,0)
      text(1,6,"L",0xD51007)
    end

    if self.label!=nil
      var avail=width()-9
      var s=self.full
      var w=text_ink_width(s)
      if w>avail
        s=self.label
        w=text_ink_width(s)
      end
      ramp_text(9+(avail-w)/2,6,s,self.pal,0,self.gspeed)
      return
    end

    var s=self.err ? "?" : "..."
    var w=text_ink_width(s)
    text(9+(width()-9-w)/2,6,s,self.err ? 0xCC7722 : 0x555555)
  end
end

return LastFM()