SmartPhone

peripheral.find("modem", rednet.open)
local Ventana, LSApps
local LSBotones = {}
local backColor,appColor,textColor
local Page = 1

function SystemData()
    --File system
    if (fs.exists("Apps") == false) then
        fs.makeDir("Apps")
    end
    if (fs.exists("SysData") == false) then
        fs.makeDir("SysData")
        if(fs.exists("SysData/os.json")) then
            fs.delete("SysData/os.json")
        end
    end
    local file = fs.open("SysData/os.json", "w")
    file.writeLine("1.0") --os Version
    file.close()

    --Auto install
    if (fs.exists("startup.lua") == false) then
        shell.execute("pastebin", "get", "Yir91aUq", "startup.lua")
    end

    --Options
    if (fs.exists("SysData/options.txt") == false) then
        file = fs.open("SysData/options.txt", "w")
        file.writeLine(colors.cyan) --Background color
        file.writeLine(colors.yellow) --App color
        file.writeLine(colors.white) --Text color
        file.close()
    end
    file = fs.open("SysData/options.txt", "r")
    backColor = tonumber(file.readLine()) --Background color
    appColor = tonumber(file.readLine()) --App color
    textColor = tonumber(file.readLine()) --Text color
    file.close()

    --Obligatory apps
    local LSApps ={
        {"Apps", "U3vd1Qb5"},
        {"Optns", "J9hVM3gx"},
        {"Birb", "PEu7TMTy"},
        {"Calc", "jWWUdLHg"}
    }

    for a=1,#LSApps,1 do
        if (fs.exists("Apps/" .. LSApps[a][1]) == false) then
            fs.delete("Apps/" .. LSApps[a][1])
            shell.execute("pastebin", "get", LSApps[a][2], "Apps/" .. LSApps[a][1] .. "/" .. LSApps[a][1] .. ".lua")
            local fUID = fs.open("Apps/" .. LSApps[a][1] .. "/UID.txt", "w")
            fUID.write(LSApps[a][2])
            fUID.close()
        end
    end
end

function Gui()
    term.setBackgroundColor(backColor)
    term.setTextColor(textColor)
    term.clear()

    Ventana = window.create(term.current(), 1,1,26,20)
    Ventana.setBackgroundColor(backColor)
    Ventana.clear()

    --Info bar
    local IBar = window.create(term.current(),1,1,26,1)
    IBar.setBackgroundColor(colors.green)
    IBar.clear()
    IBar.setCursorPos(1,1)
    IBar.setTextColor(textColor)
    IBar.write(textutils.formatTime(os.time(), false))
    IBar.setCursorPos(17,1)
    IBar.write("BlockDroid")

    --Crear botones
    LSBotones = {}
    LSApps = fs.list("Apps")
    local nApps = table.getn(LSApps)
    local height = 4
    for i=(6*(Page-1))+1,nApps,1
    do
        if (i > (6*Page)) then
            height = 4
            break
        end

        local path = "Apps/" .. LSApps[i] .. "/" .. LSApps[i] .. ".lua"
        if (i==(6*(Page-1))+1) then
            CreateButton(5, height, 11, height+2, appColor, LSApps[i], path)
        elseif (i%2==0) then
            CreateButton(5 + 11, height, 11 + 11, height+2, appColor, LSApps[i], path)
        else
            height = height+5
            CreateButton(5, height, 11, height+2, appColor, LSApps[i], path)
        end
    end

    --Page Navigation
    if (Page>1) then
        paintutils.drawFilledBox(1,19,7,20, appColor)
        term.setBackgroundColor(colors.yellow)
        term.setCursorPos(3,20)
        term.write("<---")
    end
    if (nApps > Page * 6) then
        paintutils.drawFilledBox(20,19,26,20, appColor)
        term.setBackgroundColor(colors.yellow)
        term.setCursorPos(21,20)
        term.write("--->")
    end

    --Page number
    term.setBackgroundColor(backColor)
    IBar.setTextColor(textColor)
    term.setCursorPos(13,20)
    term.write(Page)
end

function Events()
    while(true) do
        parallel.waitForAny(
            function()
                local e, button, x, y = os.pullEvent("mouse_click");
                Gui()
                if button == 1 then
                    OpenApp(x, y)
                    ChangePage(x, y)
                end
            end,
            function()
                sleep(.5)
                Gui()
            end
        )
    end
end

function OpenApp(x, y)
    for o = 1,#LSBotones,1 do
        if (o > 6) then break end

        if x >= LSBotones[o][1] and y >= LSBotones[o][2] and x <= LSBotones[o][3] and y <= LSBotones[o][4]
        then
            multishell.setTitle(1, "Home")
            local pro = shell.openTab(LSBotones[o][6])
            multishell.setFocus(pro)
            multishell.setTitle(pro, LSBotones[o][5])
        end
    end
end

function ChangePage(x, y)
    if (x >= 1 and y >= 19 and x <= 7 and Page > 1) then -- Previous Page
        Page = Page-1
        Gui()
    elseif (x>= 20 and y >= 19 and x <= 26) then -- Next Page
        if (#LSApps > Page*6) then
            Page = Page+1
            Gui()
        end
    end
end

function CreateButton(x1, y1, x2, y2, color, name, program)
    local Button = window.create(term.current(), x1, y1, x2-x1+1, y2-y1+1)
    Button.setBackgroundColor(color)
    Button.clear()
    paintutils.drawPixel(x1,y1)
    paintutils.drawPixel(x2,y1)
    paintutils.drawPixel(x1,y2)
    paintutils.drawPixel(x2,y2)

    -- Name
    term.setCursorPos(x1+3-math.floor(string.len(name)/2), y2+1)
    term.setTextColor(textColor)
    term.write(name)

    local i = table.getn(LSBotones) + 1
    LSBotones[i] = {x1, y1, x2, y2, name, program}
end

-- MAIN --
SystemData()
Gui()
Events()