local debug=true
local currentVersion="1"
local boxPastebin="VTqiayCe"
local snapPastebin="YzLLYEzm"
local clearSettingsPastebin="aa5cBF43"

function toggleUpdates()
    if debug==true then
        print("In toggleUpdates")
    end
    print[[Do you wish to receive automatic updates?
    1. Yes
    2. No]]
    local choice=io.read()

    if choice=="1" then
        changeUpdates(true)
    else
        changeUpdates(false)
    end
end

function changeUpdates(updates)
    if debug==true then
        print(string.format ( "in changeUpdates - updates= %s", updates and "true" or "false" ))
    end
    fs.delete("updating")
    if updates==true then
        local file = fs.open("updating","w")
        file.write("A fish swam into a wall - OW - DAMN")
        file.close()
    end
end

function doWeCheckUpdates()
    local file = fs.open("updating","r")
    if file==nil then
        return false
    else
        file.close()
        return true
    end

end

function firstRun()
    if debug==true then
        print("In firstRun")
    end

--see if we have a first run file
    local file = fs.open("firstRun","r")
    if file==nil then
        if debug==true then
            print("First time program is run - creating firstRun file")
        end
        toggleUpdates()
        local file = fs.open("firstRun","w")
        file.write("Why are you even looking in here :)")
        file.close()
    else
        file.close()
    end

end

function createCurrentFile()
    if debug==true then
        print("in createCurrentFile()")
    end
    local file = fs.open("currentLauncherVersion","r")
    if file==nil then
        print("No Version File Found - Creating with version "..currentVersion)
        local file = fs.open("currentLauncherVersion","w")
        file.write(currentVersion)
        file.close()
    else
        file.close()
    end

end

function updateLauncher()
    if debug==true then
        print("In updateLauncher")
    end
    print("Updates Found - Updating Launcher")
    fs.delete("startup")
    shell.run("rom/programs/http/pastebin", "get P65y2rkJ startup")
    fs.delete("currentLauncherVersion")
    print("Update complete. Please restart the program. Closing in 5 seconds")
    sleep(5)
    os.reboot()
end

function checkForUpdates()
    if doWeCheckUpdates()==true then
        print("Checking for updates..")
    --check for the newest version number
        fs.delete("newestLauncherVersion")
        shell.run("rom/programs/http/pastebin", "get ZD3HcUC8 newestLauncherVersion")
        local file = fs.open("newestLauncherVersion","r")
        local newest = file.readAll()
        file.close()
    --get the current version number
        local file = fs.open("currentLauncherVersion","r")
        local current = file.readAll()
        file.close()
        if newest>current then
            updateLauncher()
        else
            print("No updates found...you are running the current version")
        end
    end
end

function checkForLastChoice()
    local lastChoice=nil
    if debug==true then
        print("In lastChoice")
    end
    local file = fs.open("lastChoice","r")
    if file~=nil then
        lastChoice = file.readAll()
        file.close()
    end
    return lastChoice
end

function resumeLastChoice()
    local choice=checkForLastChoice()
    if choice=="Box" then
        runBox()
    elseif choice=="Snap" then
        runSnap()
    end
end

function setLastChoice(choice)
    local file = fs.open("lastChoice","w")
    file.write(choice)
    file.close()
end

function runBox()
    if doWeCheckUpdates()==true then
        downloadFile("box",boxPastebin)
        downloadFile("clearsettings",clearSettingsPastebin)
    end
    if fs.exists("box")==false then
        downloadFile("box",boxPastebin)
        downloadFile("clearsettings",clearSettingsPastebin)
    end
    shell.run("box")
end

function runSnap()
    if doWeCheckUpdates()==true then
        downloadFile("snap",snapPastebin)
    end
    if fs.exists("snap")==false then
        downloadFile("snap",snapPastebin)
    end
    shell.run("snap")
end

function downloadFile(filename,pastebin)
    fs.delete(filename)
    shell.run("rom/programs/http/pastebin", "get "..pastebin.." "..filename)
end

function mainMenu()
    if checkForLastChoice()~=nil then
        resumeLastChoice()
    end

    if debug==true then
        print("In mainMenu")
    end
    print [[------Psyestorm's Turtle Launcher------
    1. Box - Mining Turtle
    2. Snap - Engineering Turtle
    0. Toggle Automatic Updates]]

    local choice=nil
    while choice==nil do
        choice=io.read()
        if choice=="1" then
            setLastChoice("Box")
            runBox()
        elseif choice=="2" then
            setLastChoice("Snap")
            runSnap()
        elseif choice=="0" then
            toggleUpdates()
        else
            choice=nil
        end
        print(choice)
    end
end

--check if this is the first time the launcher has been run
firstRun()
createCurrentFile()
checkForUpdates()
mainMenu()