import std/[os,osproc,strutils,json,rdstdin,marshal]

type
  Info* = object
    title*: string
    selected_fg*: string
    selected_bg*: string
    unselected_fg*: string
    unselected_bg*: string
    full_text*: string
    # next few are for i3bar use
    border*: string
    background*: string
    color*: string
    html_text*: string
    short_text*: string
  Dmenu = object
    command: string
    bottom: string
    grab_kb: string
    i_case: string
    lines_shown: string
    monitor: string
    prompt: string
    font: string
    norm_bg: string
    norm_fg: string
    sel_bg: string
    sel_fg: string
  i3BarInput* = object
    button*: int
    x*: int
    y*: int

const font = "Hermit-10"
const background* = "#000000"
const backgroundalt* = "#bb222222"
const backgroundalt2* = "#bb333333"
const foreground* = "#dfdfdf"
const foregroundalt* = "#777"
const foregroundalt2* = "#ccc"
const black* = "#000000"
const white* = "#FFFFFF"
const yellow* = "#ffb52a"
const red* = "#e60053"
const purple* = "#9f78e1" 
const blue* = "#0a6cf5"
const lightblue* = "#7296EF"
const lighterblue* = "#B5DDF7"
const green* = "#4b9901"
const lightgreen* = "#00ff00"
const grey* = "#dfdfdf"
const darkgrey* = "#444"
const primary* = yellow
const secondary* = red
const alert* = "#bd2c40"
const MAX_LINES = 20
var loop* = false
var stoploop* = true
var dmenu* = true
var rofi* = false
var passmenu* = false
var command_wrapper* = false
var run_command* = ""

proc newInfo*(title: string = "Info"): Info =
  return Info(
    title: title,
    selected_fg: black,
    selected_bg: white,
    unselected_fg: white,
    unselected_bg: black,
    # next few are for i3bar use
    border: white,
    background: black,
    color: foreground,
    )

proc newDmenuConfig(cmd: string = "dmenu"): Dmenu =
  var dmenu = Dmenu()
  dmenu.command = cmd
  dmenu.bottom = "-b"
  dmenu.grabkb = "-f"
  dmenu.i_case = "-i"
  dmenu.lines_shown = "-l"
  dmenu.monitor = "-m"
  dmenu.prompt = "-p"
  dmenu.font = "-fn"
  dmenu.norm_bg = "-nb"
  dmenu.norm_fg = "-nf"
  dmenu.sel_bg = "-sb"
  dmenu.sel_fg = "-sf"
  return dmenu

proc newRofiConfig(): Dmenu =
  var rofi = newDmenuConfig()
  rofi.command = "rofi -dmenu"
  return rofi

proc newDmenu(): Dmenu =
  if rofi:
    return newRofiConfig()
  elif passmenu:
    return newDmenuConfig("passmenu")
  elif command_wrapper:
    return newDmenuConfig(run_command)
  return newDmenuConfig()

proc debugLog*(str: string) =
  let f = open("/tmp/debug.txt",fmAppend)
  defer: f.close()
  f.writeLine(str)

proc switchTwmMode*(mode: string = "default") =
  # I intend to add support for more twm as time goes on (I switch around a lot)
  # Switch out of an i3 bindsym mode if set
  discard execCmd("i3-msg mode \"" & mode & "\"")

proc parseInput*(): i3BarInput =
  let input = readLineFromStdin("")
  try:
    let jsonNode = parseJson(input)
    let i3input = to(jsonNode, i3BarInput)
    return i3input
  except:
    return i3BarInput()

proc clearInput*(count: int = 1) =
  for x in countup(1, count):
    discard readLineFromStdin("")

proc getArguments*(): seq[string] =
  let args = commandLineParams()
  return args
proc stripQuotes*(str: string): string =
  return replace(str,"\"",""")

proc quote*(str: string): string =
  var text = str
  # May need to put some further work to escape some special chars here
  text = stripQuotes(text)
  
  # Put leading and ending quote marks in
  return " \"" & text & "\" "
  #       ^  Add a spaces  ^ so the previous flag isn't touching

proc genDmenuCmd*(data: Info, opts: varargs[string], rofi: bool = false): string =
  # Build dmenu/rofi command
  var cmd = ""
  # if the text is empty, we don't want to create a menu item of it
  if data.full_text != "":
    cmd &= data.full_text & "\n"
  for opt in opts:
    cmd = cmd & opt & "\n"
  cmd.removeSuffix("\n")

  cmd = "echo -e" & quote(cmd) & " | "

  var dmenu = newDmenu()
  cmd = cmd & dmenu.command & " "
  cmd = cmd & dmenu.lines_shown & " " & $MAX_LINES & " "
  cmd = cmd & dmenu.prompt & quote(data.title)
  cmd = cmd & dmenu.norm_bg & quote(data.unselected_bg)
  cmd = cmd & dmenu.norm_fg & quote(data.unselected_fg)
  cmd = cmd & dmenu.sel_bg & quote(data.selected_bg)
  cmd = cmd & dmenu.sel_fg & quote(data.selected_fg)
  cmd = cmd & dmenu.font & quote(font)
  return cmd



proc runDMenu*(data: Info, opts: varargs[string], rofi: bool = false): string =
  let cmd = genDmenuCmd(data, opts, rofi)
  #echo cmd
  #
  # Run command and get output
  var output = execCmdEx(cmd)
  output.output.stripLineEnd()
  return output.output

proc copyToClipboard*(str: string) =
    discard execCmd("echo -n " & quote(str) & " | xclip -selection clipboard")
proc outputData*(data: Info, args: varargs[string]): string {.discardable.} =
  var output = ""
  if rofi:
    output = runDmenu(data,args, rofi = true)
  elif loop:
    # mainly for i3bar/i3blocks compatible output
    var j_data = data
    if j_data.html_text != "":
      j_data.full_text = j_data.html_text
    echo $$j_data
  else:
    # if all else fails, use dmenu (default)
    output = runDmenu(data,args)
  return output



# At Start up:

# Switch bindsym mode back to default as it could be being used.
switchTwmMode()

let args* = getArguments()
for idx, arg in args:
  case arg:
    of "noloop":
      stoploop = true
    of "i3bar":
      # I've kind of changed from using an i3bar to using #nobar so i3bar
      # isn't really supported any more but this is here for backwards compatibility
      loop = true
      stoploop = false
    of "dmenu":
      stoploop = true
      dmenu = true
    of "rofi":
      stoploop = true
      rofi = true
    of ["pass","passmenu"]:
      passmenu = true
      break