NhUI v0.5 [ABANDONED] 'desktop'

-- future version wish: table implementation?
-- cfg: add nhui auto update preferences [versions, hotfixes] (under new menu under options > preferences > updating > versions/hotfixes)
-- misc: swap uninstall and about
-- .nhuicfg: add variable to detect if config is outdated. give warning before install of a new version
-- desk: add hotfix handling structure (versions fed by legacy startup, handled by desktop)
-- hotfix: detect on startup; have options for more information on the hotfix; option for to never ask again; version list keeps base installs; if multiple hotfixes available, let user select hotfix to view more info/install on startup
-- if auto update is true display message letting user know it's about to apply a hotfix
-- hotfix function: checks for internet, runs hotfix link that detects target nhui programs and deletes them, downloads new versions in their place
-- updates: add warning if version is not compatible
-- add a spoof disclaimer for comedic effect (not responsible for damage caused for virtual computer etc)

-- basic variables and functions
nhver,wip="v0.5",true
local nhuiProgs={["login"]="UwwmSJwL",["updater"]="ag7RuWX4",[".nhuicfg"]="mbD7EU2J"}
local nhuiProgList={"startup","desktop","updater","login",".nhuicfg"}

local colorList={["red"]=16384,["yellow"]=16,["white"]=1,["lightGrey"]=256,["grey"]=128}
local colorListMono={["red"]=1,["yellow"]=1,["white"]=1,["lightGrey"]=256,["grey"]=128}
local function setTxtColor(color)
  term.setTextColor(term.isColor() and colorList[color] or colorListMono[color])
end

local function printAt(text,setX,setY)
  term.setCursorPos(setX,setY) print(text)
end

local function resetScreen()
  term.clear() term.setCursorPos(1,1)
end

local function pingPastebin()
  http.request("http://pastebin.com")
  local requesting=true
  while requesting do
    resetScreen()
    print("Waiting for pastebin.com...")
    local event=os.pullEvent()
    if event=="http_success" then internet,requesting=true,false
    elseif event=="http_failure" then internet,requesting=false end
  end
  if internet==false then print("...could not connect.") sleep(1) resetScreen() end
end

local function anyKey()
  sleep(.2)
  local event,b,x,y=os.pullEventRaw()
  if (event=="key" and b~=0) or (event=="mouse_click" and x>0 and y>0) then anyKeyReq=nil end
end


local function openConfig()  -- needs to be formatted to fs.open
  local file=fs.open(".nhuicfg", "r")
  sContents=file:read()
  file:close()
  tContents=textutils.unserialize(sContents)
end

local function editConfigLine(line,text)  -- needs to be formatted to fs.open
  table.remove(tContents,line)
  table.insert(tContents,line,text)
end

local function saveConfig()  -- needs to be formatted to fs.open
  sContents=textutils.serialize(tContents)
  local file=fs.open(".nhuicfg","w")
  file:write(sContents)
  file:close()
end

-- menu-related functions
openConfig()  -- needs to be formatted to fs.open
local deskColors={["menuColor"]=tContents[4],["menuTextColor"]=tContents[5],["backgroundColor"]=tContents[6],["textColor"]=tContents[7],["secondaryTextColor"]=tContents[8],["tertiaryTextColor"]=tContents[9]}
saveConfig()

local function menuBar()
  term.setCursorPos(1,1) term.clearLine()
  term.setBackgroundColor(deskColors["menuColor"])
  term.setTextColor(deskColors["menuTextColor"])
  printAt((s==0 or s==nil) and "1|Start   2|Apps   3|Options   4|NhUI" or "-|Start   -|Apps   -|Options   -|NhUI",2,1)
end

local function drawMenus()
  term.setTextColor(deskColors["menuTextColor"])
  term.setBackgroundColor(deskColors["menuColor"])
  if s==1 then printAt("1|CraftOS\n ---------\n 2|Shutdown\n 3|Restart",2,2)
  elseif s==2 then printAt("1|Clock",12,2)
  elseif s==3 then printAt("1|Password",21,2)
  elseif s==4 then printAt("1|Versions\n                                2|Uninstall\n                                3|About",33,2) end
end

local function drawDesktop()
  term.setBackgroundColor(deskColors["backgroundColor"])
  term.clear()
  if wip==true then setTxtColor("red") printAt("NOTE: WIP BUILD - POSSIBLY UNSTABLE",2,17) end
  setTxtColor("lightGrey") printAt("(Use " .. (term.isColor() and "mouse & " or "") .. "keyboard for selecting.)",2,18)
  setTxtColor("grey") printAt(nhver,47,18)
  menuBar()
end

local function displayTime()
  dispTime=true
  repeat
    local inGameTime=textutils.formatTime(os.time(),false)
    local x=term.getSize()
    printAt(inGameTime,23,1)
    sleep(.01)
  until dispTime==false
end

local function displayTimeMenu()
  printAt("Current in-game time:\n\n1|(Back)",1,1)
  while true do
    local event,b,x,y=os.pullEventRaw()
    if (event=="key" and b==keys.one) or (event=="mouse_click" and b==1 and x>=1 and x<=8 and y==3) then dispTime=false drawDesktop() return end
  end
end

-- executable-related functions
local function runMenu()
  local yLine=2
  repeat
    term.setCursorPos(1,yLine) term.clearLine()
    yLine=yLine+1
  until yLine==6
  menuBar()
  drawMenus()
end

local function runShell()
  s=0 resetScreen()
  setTxtColor("yellow") print(os.version().." (run 'desktop' to return to desktop)")
  setTxtColor("white")
  sleep(.1)
end

local function runClock()
  s=0 resetScreen()
  parallel.waitForAny(displayTime,displayTimeMenu)
end

local function runPasswordSetup()
  s=0 resetScreen()
  pingPastebin()
  if internet==true then resetScreen()
    openConfig()
    if tContents[2]==true then print("This terminal is password protected.") else print("This terminal is not password protected.") end
    print("Would you like to set/change your password?\n\n1|Yes\n2|No\n3|(Back)")
    while true do
      local event,b,x,y=os.pullEventRaw()
      if (event=="key" and b==keys.one) or (event=="mouse_click" and b==1 and x>=1 and x<=5 and y==4) then
        fs.delete("login")
        shell.run("pastebin get",nhuiProgs["login"],"login")
        resetScreen()
        print("Desired password? (Note: will display input.)")
        editConfigLine(2,"true")
        local sInput=read()
        if sInput~="" then sPass=sInput end
        editConfigLine(3,sPass)
        saveConfig()
        print("\n\n@Preferences saved.\n@Press any key to return to desktop.")
        anyKey() drawDesktop() return
      elseif (event=="key" and b==keys.two) or (event=="mouse_click" and b==1 and x>=1 and x<=4 and y==5) then
        fs.delete("login")
        editConfigLine(2,"")
        editConfigLine(3,"")
        saveConfig()
        print("\n\n@Preferences saved.\n@Press any key to return to desktop.")
        anyKey() drawDesktop() return
      elseif (event=="key" and b==keys.three) or (event=="mouse_click" and b==1 and x>=1 and x<=8 and y==6) then drawDesktop() return end
    end
  elseif internet==false then drawDesktop() return end
end

local function runUpdater()
  s=0 resetScreen()
  pingPastebin()
  if internet==true then resetScreen()
    shell.run("pastebin run",nhuiProgs["updater"])
    drawDesktop()
  elseif internet==false then drawDesktop() return end
end

local function runUninstallCheck()
  s=0 resetScreen()
  print("Would you like to uninstall NhUI "..nhver.."?")
  setTxtColor("lightGrey") print("(User-created programs will *not* be deleted.)")
  setTxtColor("white") print("\n1|Yes\n2|No (Back)")
  while true do
    local event,b,x,y=os.pullEventRaw()
    if (event=="key" and b==keys.one) or (event=="mouse_click" and b==1 and x>=1 and x<=5 and y==4) then
      for i=1, #nhuiProgList do fs.delete(nhuiProgList[i]) end
      print("\n\n@NhUI "..nhver.." uninstalled successfully.\n@Press any key to reboot your computer.")
      anyKey() os.reboot()
    elseif (event=="key" and b==keys.two) or (event=="mouse_click" and b==1 and x>=1 and x<=11 and y==5) then drawDesktop() return end
  end
end

local function runAbout()
  s=0 resetScreen()
  print("NhUI Author: Nhorr (Philip)\n(Pastebin Link: pastebin.com/u/Nhorr)\n\n1|(Back)")
  while true do
    local event,b,x,y=os.pullEventRaw()
    if (event=="key" and b==keys.one) or (event=="mouse_click" and b==1 and x>=1 and x<=8 and y==4) then drawDesktop() return end
  end
end

-- desktop structure
local function runDesktop()
  s=0  -- selection rule
  while true do
    local event,b,x,y=os.pullEventRaw()
    -- if selection rule = 0
    if (event=="key" and s==0 and b==keys.one) or (event=="mouse_click" and b==1 and x>=2 and x<=8 and y==1) then s=1 runMenu()
    elseif (event=="key" and s==0 and b==keys.two) or (event=="mouse_click" and b==1 and x>=12 and x<=17 and y==1) then s=2 runMenu()
    elseif (event=="key" and s==0 and b==keys.three) or (event=="mouse_click" and b==1 and x>=21 and x<=29 and y==1) then s=3 runMenu()
    elseif (event=="key" and s==0 and b==keys.four) or (event=="mouse_click" and b==1 and x>=33 and x<=38 and y==1) then s=4 runMenu()
    -- if selection rule = 1
    elseif (event=="key" and s==1 and b==keys.one) or (event=="mouse_click" and s==1 and b==1 and x>=2 and x<=10 and y==2) then runShell() break
    elseif event=="mouse_click" and s==1 and b==1 and x>=2 and x<=10 and y==3 then s=1 drawMenus()
    elseif (event=="key" and s==1 and b==keys.two) or (event=="mouse_click" and s==1 and b==1 and x>=2 and x<=11 and y==4) then os.shutdown()
    elseif (event=="key" and s==1 and b==keys.three) or (event=="mouse_click" and s==1 and b==1 and x>=2 and x<=10 and y==5) then os.reboot()
    -- if selection rule = 2
    elseif (event=="key" and s==2 and b==keys.one) or (event=="mouse_click" and s==2 and b==1 and x>=12 and x<=18 and y==2) then runClock()
    -- if selection rule = 3
    elseif (event=="key" and s==3 and b==keys.one) or (event=="mouse_click" and s==3 and b==1 and x>=21 and x<=30 and y==2) then runPasswordSetup()
    -- if selection rule = 4
    elseif (event=="key" and s==4 and b==keys.one) or (event=="mouse_click" and s==4 and b==1 and x>=33 and x<=42 and y==2) then runUpdater()
    elseif (event=="key" and s==4 and b==keys.two) or (event=="mouse_click" and s==4 and b==1 and x>=33 and x<=43 and y==3) then runUninstallCheck()
    elseif (event=="key" and s==4 and b==keys.three) or (event=="mouse_click" and s==4 and b==1 and x>=33 and x<=39 and y==4) then runAbout()
    elseif event=="key" or event=="mouse_click" then s=0 runMenu() end
  end
end

-- run desktop
term.clear()
parallel.waitForAll(drawDesktop,runDesktop)