--[===[
Open Computer Requirements:
  RAM: At least 1 tier 3 memory chip
  Screen: Tier 3
  GPU: Tier 3
Installing:
  pastebin get [-f] tVig6HZv <filepath>
--]===]

--[===[
Notes:
  On first time boot, press <F6> to enter the main program
--]===]

--[===[
Changelog:
  Version 1:
    Program created
  Version 1.1:
    Bug fixes
  Version 2:
    Multi-gate compatibility
    Address list
  Version 2.1:
    Addition of capacitor count and energy levels
    Shrunk buttons to add 3 more
  Version 2.2:
    Changed symbol glyph keybinds for parity with PoltixeTheDataatabase's program
  Version 2.3:
    Addition of energy required to dial for addresses in address list
  Version 2.4:
    Refined energy required to dial in address list for successful dials only
    Refined address book to use text file "addresses.sga" instead of global table variable
  Version 2.5:
    (Planned): Refine help page
--]===]

local forced_exit = false
local debug_mode = false

--Table *Conversion of characters to symbol strings*
local points = {}
points["q"] = {["MILKYWAY"]="Giza (POO)", ["PEGASUS"]="Subido (POO)", ["UNIVERSE"]="Glyph 17 (POO)"}
points["w"] = {["MILKYWAY"]="Crater", ["PEGASUS"]="Aaxel", ["UNIVERSE"]="Glyph 1"}
points["e"] = {["MILKYWAY"]="Virgo", ["PEGASUS"]="Abrin", ["UNIVERSE"]="Glyph 2"}
points["r"] = {["MILKYWAY"]="Bootes", ["PEGASUS"]="Acjesis", ["UNIVERSE"]="Glyph 3"}
points["t"] = {["MILKYWAY"]="Centaurus", ["PEGASUS"]="Aldeni", ["UNIVERSE"]="Glyph 4"}
points["y"] = {["MILKYWAY"]="Libra", ["PEGASUS"]="Alura", ["UNIVERSE"]="Glyph 5"}
points["u"] = {["MILKYWAY"]="Serpens Caput", ["PEGASUS"]="Amiwill", ["UNIVERSE"]="Glyph 6"}
points["i"] = {["MILKYWAY"]="Norma", ["PEGASUS"]="Arami", ["UNIVERSE"]="Glyph 7"}
points["o"] = {["MILKYWAY"]="Scorpius", ["PEGASUS"]="Avoniv", ["UNIVERSE"]="Glyph 8"}
points["p"] = {["MILKYWAY"]="Corona Australis", ["PEGASUS"]="Baselai", ["UNIVERSE"]="Glyph 9"}
points["["] = {["MILKYWAY"]="Scutum", ["PEGASUS"]="Bydo", ["UNIVERSE"]="Glyph 10"}
points["]"] = {["MILKYWAY"]="Sagittarius", ["PEGASUS"]="Ca Po", ["UNIVERSE"]="Glyph 11"}
points["\\"] = {["MILKYWAY"]="Aquila", ["PEGASUS"]="Danami", ["UNIVERSE"]="Glyph 12"}
points["a"] = {["MILKYWAY"]="Microscopium", ["PEGASUS"]="Dawnre", ["UNIVERSE"]="Glyph 13"}
points["s"] = {["MILKYWAY"]="Capricornus", ["PEGASUS"]="Ecrumig", ["UNIVERSE"]="Glyph 14"}
points["d"] = {["MILKYWAY"]="Piscis Austrinus", ["PEGASUS"]="Elenami", ["UNIVERSE"]="Glyph 15"}
points["f"] = {["MILKYWAY"]="Equuleus", ["PEGASUS"]="Gilltin", ["UNIVERSE"]="Glyph 16"}
points["g"] = {["MILKYWAY"]="Aquarius", ["PEGASUS"]="Hacemill", ["UNIVERSE"]="Glyph 17"}
points["h"] = {["MILKYWAY"]="Pegasus", ["PEGASUS"]="Hamlinto", ["UNIVERSE"]="Glyph 18"}
points["j"] = {["MILKYWAY"]="Sculptor", ["PEGASUS"]="Illume", ["UNIVERSE"]="Glyph 19"}
points["k"] = {["MILKYWAY"]="Pisces", ["PEGASUS"]="Laylox", ["UNIVERSE"]="Glyph 20"}
points["l"] = {["MILKYWAY"]="Andromeda", ["PEGASUS"]="Lenchan", ["UNIVERSE"]="Glyph 21"}
points[";"] = {["MILKYWAY"]="Triangulum", ["PEGASUS"]="Olavii", ["UNIVERSE"]="Glyph 22"}
points["'"] = {["MILKYWAY"]="Aries", ["PEGASUS"]="Once el", ["UNIVERSE"]="Glyph 23"}
points["z"] = {["MILKYWAY"]="Perseus", ["PEGASUS"]="Poco re", ["UNIVERSE"]="Glyph 24"}
points["x"] = {["MILKYWAY"]="Cetus", ["PEGASUS"]="Ramnon", ["UNIVERSE"]="Glyph 25"}
points["c"] = {["MILKYWAY"]="Taurus", ["PEGASUS"]="Recktic", ["UNIVERSE"]="Glyph 26"}
points["v"] = {["MILKYWAY"]="Auriga", ["PEGASUS"]="Robandus", ["UNIVERSE"]="Glyph 27"}
points["b"] = {["MILKYWAY"]="Eridanus", ["PEGASUS"]="Roehi", ["UNIVERSE"]="Glyph 28"}
points["n"] = {["MILKYWAY"]="Orion", ["PEGASUS"]="Salma", ["UNIVERSE"]="Glyph 29"}
points["m"] = {["MILKYWAY"]="Canis Minor", ["PEGASUS"]="Sandovi", ["UNIVERSE"]="Glyph 30"}
points[","] = {["MILKYWAY"]="Monoceros", ["PEGASUS"]="Setas", ["UNIVERSE"]="Glyph 31"}
points["."] = {["MILKYWAY"]="Gemini", ["PEGASUS"]="Sibbron", ["UNIVERSE"]="Glyph 32"}
points["/"] = {["MILKYWAY"]="Hydra", ["PEGASUS"]="Tahnan", ["UNIVERSE"]="Glyph 33"}
points["1"] = {["MILKYWAY"]="Lynx", ["PEGASUS"]="Zamilloz", ["UNIVERSE"]="Glyph 34"}
points["2"] = {["MILKYWAY"]="Cancer", ["PEGASUS"]="Zeo", ["UNIVERSE"]="Glyph 35"}
points["3"] = {["MILKYWAY"]="Sextans", ["PEGASUS"]=nil, ["UNIVERSE"]="Glyph 36"}
points["4"] = {["MILKYWAY"]="Leo Minor", ["PEGASUS"]=nil, ["UNIVERSE"]=nil}
points["5"] = {["MILKYWAY"]="Leo", ["PEGASUS"]=nil, ["UNIVERSE"]=nil}

--Table *Program keybinds*
local keybinds = {}
keybinds["Enter"] = "Dial"
keybinds["F1"] = "Keybinds List"
keybinds["F4"] = "Toggle Iris"
keybinds["Shift"] = "Quit"
keybinds["F3"] = "Recent Address List"
keybinds["F5"] = "Sequence Compiler"
keybinds["F6"] = "Dialer Help"
keybinds["F7"] = "Switch Gate Type"

--Table *Stores chevron values [false=not engaged]*
chevrons = {}
chevrons[0] = false
chevrons[1] = false
chevrons[2] = false
chevrons[3] = false
chevrons[4] = false
chevrons[5] = false
chevrons[6] = false
chevrons[7] = false
chevrons[8] = false

--Table *Stores action buttons*
local buttons = {}

--Table *Stores sequence compiler buttons*
local symbol_buttons = {}

--Table *Stores old address buttons*
local old_addr_buttons = {}

--Table *Stores confirm prompt buttons*
local confirm_prompt_buttons = {}

--Table *Stores the address entered by user |zero-indexed|*
local address = {}

--Import modules "I think there called modules in Lua"
local os = require("os")
local component = require("component")
local keyboard = require("keyboard")
local event = require("event")
local sides = require("sides")
local unicode = require("unicode")
local fs = require("filesystem")
--local rs = component.redstone

--Setup variables
local gpu = component.gpu
local sg = component.stargate
local top = sides.top

--Setup numerical variables
local w, h = gpu.getResolution()
local initial, ispallet = gpu.getBackground()
local vw = w / 100
local vh = h / 100
local index = 0
local dial_index = 0
local keybind_showKeybindsList = 59
local keybind_toggleIris = 62
local keybind_showOldAddresses = 61
local keybind_showSequenceCompiler = 63
local keybind_showHelp = 64
local keybind_switchGateType = 65

--Setup boolean variables
state = true
dialing = false
active = false
sigterm = false
failed = false
inbound = false
local iris = false
local compiler_open = false
local book_open = false
local save_addr = true
local confirm_open = false
local confirm_response = nil
local closed_fully = false
local dhd_alert = false

--Setup byte variables
local standard = 0x0024C0

--Setup string variables
local fail_type = ""
local idc = ""
local gate_type = sg.getGateType()

--Setup code
gpu.setDepth(8)
if first == nil then
  first = false
end
if fs.exists("addresses.sga") == false then
  file = io.open("addresses.sga", "a")
  file:close()
end

--Function *Clears the screen*
function clear()
  os.execute("clear")
end

--Function *Coverts table to number indxed table*
function toOrderedTable(table)
  local out = {}
  for key, value in pairs(table) do
    if type(key) == "string" then
      out[string.byte(key)] = value
    elseif type(key) == "table" then
      out[len(key)] = value
    else
      out[key] = value
    end
  end
  return out
end

--Function *Extension of toOrderedTable*
function toFlooredOrderedTable(table)
  local out = {}
  local ordered = toOrderedTable(table)
  local smallest = getLeast(getKeys(ordered))
  local max = len(ordered)
  local i = 1
  while len(out) < max do
    out[i] = ordered[smallest]
    ordered[smallest] = nil
    smallest = getLeast(getKeys(ordered))
    i = i + 1
  end
  return out
end

--Function *Returns table containing keys*
function getKeys(table)
  local keys = {}
  local index = 0
  for k,v in pairs(table) do
    keys[index] = k
    index = index + 1
  end
  return keys
end

--Function *Gets smallest number in table*
function getLeast(table)
  local smallest = nil
  for k,v in pairs(table) do
    --print(smallest, v)
    if smallest == nil then
      smallest = v
    end
    if type(v) == "number" then
      if v < smallest then
        smallest = v
      end
    end
  end
  return smallest
end

--Function *Splits string around delimiter*
function split(string, delimiter, start_index)
  if #delimiter > 1 then
    error("[function<split>]: ParamError@delimiter -> Expected string of length 0 to 1, got "..#delimiter)
  else
    if start_index == nil then
      start_index = 0
    end
    local out = {}
    local index = start_index
    out[index] = ""
    for i=1,#string do
      local char = string:sub(i,i)
      if char == delimiter then
        index = index + 1
        out[index] = ""
      else
        out[index] = out[index]..char
      end
    end
    return out
  end
end

--Function *Counts number of occurances of each element in a table*
function count(table, element)
  local e_count = 0
  for k,v in pairs(table) do
    if v == element then
      e_count = e_count + 1
    end
  end
  return e_count
end

--Function *Gets number of entries in table*
function len(table)
  local count = 0
  for k,v in pairs(table) do
    count = count + 1
  end
  return count
end

--Function *Fills a table with a value*
function fill(table, value)
  for i,e in pairs(table) do
    table[i] = value
  end
end

--Function *Returns index position of element in table*
function indexof(table, value)
  for k,v in pairs(table) do
    if v == value then
      return k
    end
  end
  return -1
end

--Function *Shallow comparison of tables*
function isSame(t1, t2, start)
  start = start or 1
  if len(t1) ~= len(t2) then
    return false
  end
  local l = len(t1)
  for i=start,l do
    --print(t1[i], t2[i])
    if t1[i] ~= t2[i] then
      return false
    end
  end
  return true
end

--Function *Converts degrees to radians*
function toRadian(degrees)
  return degrees * (math.pi / 180)
end

--Function *Rounds a number*
function round(num, places)
  places = places or 1
  return math.floor(num*math.pow(10,places)+0.5) / math.pow(10,places)
end

--Function *Returns key from key press*
function parseKey()
  local event, a, b, c, d = event.pull("key_down")
  return unicode.char(b), keyboard.isControl(b), b, c, d
end

--Function *Resets GPU to inital standards*
function resetGpu()
  gpu.setBackground(0x000000)
  gpu.setForeground(0xFFFFFF)
end

--Function *Creates/modifies a button*
function createButton(buffer, name, x, y, w, h, border, text, onclick, ...)
  resetGpu()
  gpu.fill(x, y, w, h, " ")
  gpu.setBackground(border)
  gpu.fill(x, y, w, 2*vh, " ")
  gpu.fill(x, y + h, w + 0.75*vw, 2*vh, " ")
  gpu.fill(x, y, 1*vw, h, " ")
  gpu.fill(x + w, y, 1*vw, h, " ")
  resetGpu()
  gpu.set((x + w / 2) - (#text / 2), y + h / 2, text)
  buffer[name] = {["x"]=x, ["y"]=y, ["w"]=w, ["h"]=h, ["function"]=onclick, ["args"]={...}, ["text"]=text}
end

--Function *Handles event listener errors*
function threadHandler(event)
  prompt(0xFF0000, "Error", "An Error has Occured in Dialing Program")
  dialing = false
  sigterm = true
end

--Function *Ignores event if function was defined*
function ignoreIf(name, callback)
  if callback ~= nil then
    event.ignore(name, callback)
    return true
  else
    return false
  end
end

--Function *Quits the program with certain clenup functions*
function quit()
  clear()
  resetGpu()
  ignoreIf("stargate_spin_chevron_engaged", lockChevron)
  ignoreIf("touch", onScreenTouch)
  ignoreIf("key_down", onKeyPress)
  ignoreIf("stargate_close", closeGate)
  ignoreIf("stargate_wormhole_closed_fully", fullClose)
  ignoreIf("stargate_dhd_chevron_engaged", onDhdPress)
  ignoreIf("stargate_incoming_wormhole", inboundConnection)
  forced_exit = true
  os.exit()
end

--Function *Draws a circle*
function drawCircle(h, k, r, border, size, fill)
  if fill == nil then
    fill = initial
  end
  if border == nil then
    border = 0xFFFFFF
  end
  if size == nil then
    size = 1
  end
  gpu.setBackground(border)
  for theta=0,360 do
    local x = h + r * math.cos(toRadian(theta))
    local y = k + r * math.sin(toRadian(theta)) / (w / h)
    gpu.fill(round(x), round(y), size + 1.125*vw, size, " ")
  end
end

--Function *Gets addresses from file*
function getAddresses()
  local old = {}
  local file = io.open("addresses.sga", "r")
  local data = file:read("*all")
  data = data:sub(1, #data - 1)
  file:close()
  if data == "" then
    return {}
  end
  local data_table = split(data, "#", 1)
  for key, addr in ipairs(data_table) do
    local addr_data = split(addr, "~", 1)
    old[key] = {}
    for k, ind in ipairs(addr_data) do
      local pairs = split(ind, "=", 0)
      --print(pairs[0], pairs[1])
      old[key][pairs[0]] = pairs[1]
    end
    old[key]["chars_list"] = split(old[key]["chars_list"], " ", 1)
  end
  return old
end

--Function *Saves addresses to book*
function saveAddress()
  if save_addr == true then
    local char_list = ""
    local new_addr = ""

    for k, char in ipairs(toFlooredOrderedTable(address)) do
      char_list = char_list..char.." "
    end
    char_list = char_list:sub(1, #char_list - 1)

    new_addr = new_addr.."chars_list="..char_list.."~"
    new_addr = new_addr.."gate_type="..gate_type.."~"
    new_addr = new_addr.."success_state="..tostring(not failed).."#"
    local file = io.open("addresses.sga", "a")
    file:write(new_addr)
    file:close()
  end
end

--Function *Deletes address from book*
function deleteAddress(args)
  local res = confirm(0xFFB600, "Delete Address", "Delete this address from the book?", "Yes", "No")
  if res == true then
    local old = getAddresses()
    local addr = args[1]["chars_list"]
    local kept = {}
    for k, a in ipairs(old) do
      if isSame(a["chars_list"], addr, 1) == false then
        kept[len(kept) + 1] = a
      end
    end
    local out = ""
    for a, addr in ipairs(kept) do
      local chars = ""
      local address = ""
      for i, char in addr["chars_list"] do
        chars = chars..char.." "
      end
      chars = chars:sub(1, #chars - 1)
      address = address.."chars_list="..chars.."~"
      address = address.."gate_type="..addr["gate_type"].."~"
      address = address.."success_state="..addr["success_state"].."#"
      out = out..address
    end
    local file = io.open("addresses.sga", "w")
    file:write(out)
    file:close()
  end
  listOldAddresses()
end

--Bound-Function *abort_button.onclick*
function abort()
  if active == true then
    --sg.disengageGate()
    active = false
  elseif dialing == true then
    prompt(0xFFB600, "Gate Manual Override", "Override engaged", "Gate will shutdown on next chevron")
    sigterm = true
  elseif count(chevrons, false) < 9 then
    sg.disengageGate()
  else
    prompt(0xFF0000, "Gate is IDLE", "The stargate is idle", "and cannot be disengaged", true)
  end
end

--Bound-Function *iris_button.onclick*
function toggleIris()
  boolean Beamer = component.beamer.isActive;
  if (Beamer == true)
    Beamer = false;
  else
	Beamer = true;
  end
  createButton(buttons, "beamer_button", 8*vw, 70*vh, 15*vw, 8*vh, 0xFF0000, "Toggle Beamer", toggleIris)
  component.beamer.setActive(Beamer)
  clear()
  updateDisplay()
end

--Bound-Function *symbol_button.onclick*
function addSymbolToSequence(args_list)
  clear()
  listSequenceCompiler()
  local symbol = args_list[1]
  if symbol ~= -1 then
    if indexof(points, symbol) ~= -1 then
      local char = indexof(points, symbol)
      if count(address, char) >= 1 then
        prompt(0xFF0000, "Pre-Sequence Error", "Duplicate Keys", "Key \""..key.."\" is already listed", true)
        listSequenceCompiler()
      else
        address[index] = char
        index = index + 1
        local old_button = symbol_buttons[symbol[gate_type].."button"]
        createButton(symbol_buttons, symbol[gate_type].."button", old_button.x, old_button.y, old_button.w, old_button.h, 0x00FF00, "("..indexof(points, symbol)..") "..symbol[gate_type], addSymbolToSequence, old)
      end
    else
      prompt(0xFF0000, "Pre-Sequence Error", "Unkown Symbol", "Symbol \""..symbol[gate_type].."\" is not recognized", true)
      listSequenceCompiler()
    end
  elseif index > 0 then
    index = index - 1
    local old = points[address[index]]
    address[index] = nil
    local old_button = symbol_buttons[old[gate_type].."button"]
    createButton(symbol_buttons, old[gate_type].."button", old_button.x, old_button.y, old_button.w, old_button.h, 0x787878,"("..indexof(points, old)..") "..old[gate_type], addSymbolToSequence, old[gate_type])
  end
end

--Bound-Function *switch_button.onclick*
function switchGate()
  sg = require("component").stargate
  index = 0
  address = {}
  if gate_type == "MILKYWAY" then
    points = p_points
    gate_type = "PEGASUS"
    prompt(0xFFb600, "Gate Alert", "Switched gate type to \"Pegasus\"", true)
  elseif gate_type == "PEGASUS" then
    points = u_points
    gate_type = "UNIVERSE"
    prompt(0xFFb600, "Gate Alert", "Switched gate type to \"Universe\"", true)
  elseif gate_type == "UNIVERSE" then
    points = mw_points
    gate_type = "MILKYWAY"
    prompt(0xFFb600, "Gate Alert", "Switched gate type to \"Milky Way\"", true)
  end
end

--Bound-Function *old_address_button.onclick*
function dialOldAddress(args_list)
  local addr = args_list[1]
  if addr["gate_type"] ~= gate_type then
    prompt(0xFF0000, "Gate Type Error", "Cannot use address", "Address gate type does not match", true)
    listOldAddresses()
  else
    for i,char in ipairs(addr["chars_list"]) do
      address[i - 1] = char
      index = i - 1
    end
    local symbol_list = {}
    for k, v in ipairs(toFlooredOrderedTable(address)) do
      point = points[v][gate_type]
      if point == "Giza (POO)" then
        point = "Point of Origin"
      elseif point == "Subido (POO)" then
        point = "Subido"
      elseif point == "Glyph 17 (POO)" then
        point = "Glyph 17"
      end
      symbol_list[k] = point
    end
    local req = nil
    if addr["success_state"] == "true" then
      req = tostring(sg.getEnergyRequiredToDial(symbol_list).open)
    else
      req = "No Lock"
    end
    local res = confirm(standard, "Address Selected", "Ready to Dial Address", "Confirm Sequence", "", "Required Power: "..req, "Confirm", "Deny")
    if res == true then
      save_addr = false
      beginDialSequence()
      save_addr = true
    else
      fill(address, nil)
      index = 0
    end
    listOldAddresses()
  end
end

--Bound-Function *confirm_prompt_button.onclick*
function setConfirmPromptState(args)
  confirm_response = args[1]
end

--Function *Displays buttons "Panel on lower left"*
function listActionPanel()
  resetGpu()
  gpu.setBackground(standard)
  gpu.fill(5*vw, 54*vh, 23*vw, 2*vh, " ")
  gpu.fill(5*vw, 95*vh, 23.5*vw, 2*vh, " ")
  gpu.fill(5*vw, 55*vh, 1*vw, 40*vh, " ")
  gpu.fill(28*vw, 55*vh, 1*vw, 40*vh, " ")
  createButton(buttons, "dial_button", 7*vw, 58*vh, 9*vw, 8*vh, 0x787878, "Dial", beginDialSequence)
  createButton(buttons, "switch_button", 17.5*vw, 58*vh, 8.5*vw, 8*vh, 0x787878, "Switch Gate", switchGate)
  createButton(buttons, "beamer_button", 7*vw, 70*vh, 9*vw, 8*vh, 0x00FF00, "Toggle Beamer", toggleIris)
  createButton(buttons, "kb_button", 17.5*vw, 70*vh, 8.5*vw, 8*vh, 0x787878, "Keybinds", listKeyBinds)
  createButton(buttons, "abort_button", 7*vw, 82*vh, 9*vw, 8*vh, 0x787878, "Abort", abort)
  createButton(buttons, "quit_button", 17.5*vw, 82*vh, 8.5*vw, 8*vh, 0x787878, "Compiler", listSequenceCompiler)
end

--Function *Displays chevron states "Panel on upper left"*
function listChevronStates()
  resetGpu()
  gpu.setBackground(standard)
  gpu.fill(5*vw, 6*vh, 20*vw, 2*vh, " ")
  gpu.fill(5*vw, 46*vh, 21*vw, 2*vh, " ")
  gpu.fill(5*vw, 6*vh, 1*vw, 40*vh, " ")
  gpu.fill(25*vw, 6*vh, 1*vw, 40*vh, " ")
  y = 10
  for i=0,8 do
    local c = chevrons[i]
    if c == false then
      gpu.setBackground(0xFF0000)
      gpu.fill(16*vw, y*vh, 5*vw, 2*vh, " ")
      gpu.setBackground(0x787878)
      gpu.fill(10*vw, y*vh, 5*vw, 2*vh, " ")
    else
      gpu.setBackground(0x00FF00)
      gpu.fill(10*vw, y*vh, 5*vw, 2*vh, " ")
      gpu.setBackground(0x787878)
      gpu.fill(16*vw, y*vh, 5*vw, 2*vh, " ")
    end
    resetGpu()
    gpu.set(8*vw, y*vh, tostring(i+1))
    y = y + 4
  end
end

--Function *Displays chevron symbols "Panel on right"*
function listAddressBoxes()
  resetGpu()
  y = 6
  for a=0,8 do
    gpu.setBackground(standard)
    gpu.fill(80*vw, y*vh, 15*vw, 2*vh, " ")
    gpu.fill(80*vw, y*vh + 6*vh, 16*vw, 2*vh, " ")
    gpu.fill(80*vw, y*vh, 1*vw, 9*vh, " ")
    gpu.fill(95*vw, y*vh, 1*vw, 9*vh, " ")
    resetGpu()
    if dialing == true then
      if chevrons[a] ~= false then
        local str = chevrons[a]
        gpu.set(88*vw - #str / 2, y*vh + 2.5*vh, str)
      end
    else
      if address[a] ~= nil then
        local str = points[address[a]][gate_type]
        gpu.set(88*vw - #str / 2, y*vh + 2.5*vh, str)
        --gpu.set(88*vw - 1, y*vh + 2.5*vh, address[a])
      end
    end
    y = y + 10
  end
end

function listStats()
  resetGpu()
  local stored = sg.getEnergyStored()
  local max = sg.getMaxEnergyStored()
  local cap_count = sg.getCapacitorsInstalled()
  local inc = 28*vw / max
  local units = inc * stored
  gpu.setBackground(standard)
  gpu.fill(30*vw, 64*vh, 45*vw, 2*vh, " ")
  gpu.fill(30*vw, 78*vh, 46*vw, 2*vh, " ")
  gpu.fill(30*vw, 64*vh, 1*vw, 14*vh, " ")
  gpu.fill(75*vw, 64*vh, 1*vw, 14*vh, " ")
  resetGpu()
  gpu.set(32*vw, 68*vh, "Capacitors: "..cap_count.."/3")
  gpu.set(44*vw, 68*vh, "[")
  local x = 45*vw
  for i=1,3 do
    if i <= cap_count then
      gpu.setBackground(0x00FF00)
    else
      gpu.setBackground(0xFF0000)
    end
    gpu.fill(x, 68*vh, 8*vw, 2*vh, " ")
    x = x + 10*vw
  end
  resetGpu()
  gpu.set(73.5*vw, 68*vh, "]")
  gpu.set(32*vw, 74*vh, "Energy:")
  gpu.set(38*vw, 75*vh, round((stored / max) * 100).."%")
  gpu.set(32*vw, 76*vh, stored.."/"..max)
  gpu.set(44*vw, 75*vh, "[")
  gpu.set(73.5*vw, 75*vh, "]")
  gpu.setBackground(0x787878)
  gpu.fill(45*vw, 75*vh, 28*vw, 2*vh, " ")
  gpu.setBackground(0x00FF00)
  gpu.fill(45*vw, 75*vh, units, 2*vh, " ")
end

--Function *Displays IDC and stargate status*
function listOutputs()
  resetGpu()
  gpu.setBackground(standard)
  gpu.fill(30*vw, 82*vh, 45*vw, 2*vh, " ")
  gpu.fill(30*vw, 95*vh, 46*vw, 2*vh, " ")
  gpu.fill(30*vw, 82*vh, 1*vw, 15*vh, " ")
  gpu.fill(75*vw, 82*vh, 1*vw, 15*vh, " ")
  resetGpu()
  local gate = ""
  if gate_type == "MILKYWAY" then
    gate = "Milky Way: "
  elseif gate_type == "PEGASUS" then
    gate = "Pegasus: "
  elseif gate_type == "UNIVERSE" then
    gate = "Universe: "
  end
  if dialing == false then
    if inbound == false and active == false then
      local idle = gate.."IDLE"
      gpu.set(50*vw - (#idle / 2), 86*vh, idle)
    elseif inbound == true then
      local inbound = gate.."INBOUND"
      gpu.set(50*vw - (#inbound / 2), 86*vh, inbound)
    elseif active == true then
      local locked = gate.."LOCKED"
      gpu.set(50*vw - (#locked / 2), 86*vh, locked)
    end
  else
    local active = gate.."ACTIVE"
    gpu.set(50*vw - (#active / 2), 86*vh, active)
  end
  gpu.set(35*vw, 90*vh, "Stargate IDC: ")
  if idc ~= nil then
    gpu.set(30*vw + (45*vw / 2) - (#idc / 2), 90*vh, idc)
  end
end

--Function *Displays stargate*
function listStargate()
  local ring_color = 0xA5A5A5
  local inner_color = 0x696969
  if gate_type == "UNIVERSE" then
    ring_color = 0x222222
    inner_color = 0x333333
  elseif gate_type == "PEGASUS" then
    ring_color = 0x222222
    inner_color = 0x33DBFF
  end
  drawCircle(50*vw, 32*vh, 18*vw, 0x0049FF, 1)
  drawCircle(50*vw, 32*vh, 16*vw, inner_color, 1)
  drawCircle(50*vw, 32*vh, 17*vw, ring_color, 1)
  drawCircle(50*vw, 32*vh, 15*vw, ring_color, 1)
  resetGpu()
  local final = indexof(address, "q")
  local chevs = {}
  local r = 16*vw
  local old = nil
  chevs[0] = 50
  chevs[1] = 10
  chevs[2] = 330
  chevs[3] = 210
  chevs[4] = 170
  chevs[5] = 130
  if len(address) <= 7 then
    chevs[6] = 90
    chevs[7] = 290
    chevs[8] = 250
  elseif len(address) == 8 then
    chevs[6] = 290
    chevs[7] = 90
    chevs[8] = 250
  elseif len(address) == 9 then
    chevs[6] = 290
    chevs[7] = 250
    chevs[8] = 90
  end
  for c=0,8 do
    chev = chevrons[c]
    local x = 49*vw + r * math.cos(toRadian(chevs[c]))
    local y = 30*vh + r * math.sin(toRadian(chevs[c]+180)) / 2
    if chev == false then
      gpu.setBackground(0xF2F2F2)
    else
      gpu.setBackground(0xFF0000)
    end
    gpu.fill(round(x), round(y), 4*vw, 6*vh, " ")
  end
end

--Function *List symbol keybinds*
function listKeyBinds()
  resetGpu()
  clear()
  gpu.set(50*vw - (#"AUNIS Dialing Program Keybinds (F1)" / 2), 6*vh, "AUNIS Dailing Program Keybinds (F1)")
  gpu.setBackground(standard)
  gpu.fill(0*vw, 2*vh, 100*vw, 2*vh, " ")
  gpu.fill(0*vw, 98*vh, 100*vw, 2*vh, " ")
  resetGpu()
  x = 10*vw
  y = 10*vh
  index = 0
  for char, pair in ipairs(toFlooredOrderedTable(points)) do
    local symbol = pair[gate_type]
    if symbol ~= nil then
      if symbol == "Point of Origin" then
        gpu.setForeground(0x00FF00)
      end
      gpu.set(x, y, "\""..char.."\": "..symbol)
      index = index + 1
      y = y + 5*vh
      if y >= 90*vh then
        y = 10*vh
        x = x + 20*vw
      end
      gpu.setForeground(0xFFFFFF)
    end
  end
  for key, action in pairs(keybinds) do
    if action == "Dial" then
      gpu.setForeground(0x0000FF)
    elseif action == "Quit" then
      gpu.setForeground(0xFF0000)
    else
      gpu.setForeground(0xAAAAAA)
    end
    gpu.set(x, y, "\""..key.."\": "..action)
    y = y + 5*vh
    if y >= 90*vh then
      y = 10*vh
      x = x + 20*vw
    end
    gpu.setForeground(0xFFFFFF)
  end
  resetGpu()
  local leave = "Press \"F1\" to Escape"
  gpu.set(50*vw - (#leave / 2), 95*vh, leave)
  local state = true
  while state == true do
    local key, is_control, raw, c = parseKey()
    if c == keybind_showKeybindsList then
      state = false
    end
  end
  resetGpu()
end

--Function *List old addresses*
function listOldAddresses()
  --book_open = true
  resetGpu()
  clear()
  local header = "Recent Address Book (F3)"
  gpu.set(50*vw - (#header / 2), 6*vh, header)
  local escape = "Press \"F3\" to Escape"
  gpu.set(50*vw - (#escape / 2), 95*vh, escape)
  gpu.setBackground(standard)
  gpu.fill(0*vw, 2*vh, 100*vw, 2*vh, " ")
  gpu.fill(0*vw, 98*vh, 100*vw, 2*vh, " ")
  resetGpu()
  local old_addresses = getAddresses()
  local max = len(old_addresses)
   x = 5*vw
  y = 10*vh
  local i = 0
  while x < 95*vh do
    resetGpu()
    local seg = len(old_addresses) - i
    local address = old_addresses[seg]
    if address == nil then
      break
    end
    local addr = ""
    for i,char in ipairs(address["chars_list"]) do
      addr = addr..char.." "
    end
    local color = 0xFFFFFF
    if address["gate_type"] ~= gate_type then
      color = 0x555555
    elseif address["success_state"] == "false" then
      color = 0xFF0000
    elseif address["success_state"] == "true" then
      color = 0x00FF00
    end
    createButton(old_addr_buttons, seg.."addr", x, y, 18.5*vw, 8*vh, color, "Address: "..addr, dialOldAddress, address)
    y = y + 12*vh
    if y >= 95*vh then
      x = x + 20*vw
      y = 10*vh
    end
    i = i + 1
  end
  if book_open == false then
    book_open = true
    local state = true
    while state == true and inbound == false do
      local key, is_control, raw, c = parseKey()
      if c == keybind_showOldAddresses then
        state = false
      end
    end
    book_open = false
  end
end

--Function *Sequence compiler*
function listSequenceCompiler()
  resetGpu()
  clear()
  gpu.setBackground(standard)
  gpu.fill(0*vw, 2*vh, 100*vw, 2*vh, " ")
  gpu.fill(0*vw, 98*vh, 100*vw, 2*vh, " ")
  resetGpu()
  gpu.set(50*vw - (#"Sequence Compiler (F5)" / 2), 6*vh, "Sequence Compiler (F5)")
  local y = 10*vh
  local x = 3*vw
  local ordered = toFlooredOrderedTable(points)
  for c,symbol in ipairs(ordered) do
    if symbol[gate_type] ~= nil then
      local bg = nil
      local char = indexof(points, symbol)
      if indexof(address, char) ~= -1 then
        bg = 0x00FF00
      else
        bg = 0x787878
      end
      createButton(symbol_buttons, symbol[gate_type].."button", x, y, 15*vw, 5*vh, bg, "("..char..") "..symbol[gate_type], addSymbolToSequence, symbol)
      y = y + 10*vh
      if y >= 90*vh then
        y = 10*vh
        x = x + 20*vw
      end
    end
  end
  createButton(symbol_buttons, "backspace_button", x, y, 15*vw, 5*vh, 0xFF0000, "Backspace", addSymbolToSequence, -1)
  if address[index - 1] == "q" and gate_type ~= "UNIVERSE" then
    prompt(standard, "Sequence Complete", "Sequence Entry Complete", "Press \"Enter\" to dial", false)
  end
  resetGpu()
  local leave = "Press \"F5\" to Escape"
  gpu.set(50*vw - (#leave / 2), 95*vh, leave)
  if compiler_open == false then
    compiler_open = true
    local state = true
    while state == true and inbound == false do
      local key, is_control, raw, c = parseKey()
      if c == keybind_showSequenceCompiler then
        state = false
      end
    end
    clear()
    updateDisplay()
    compiler_open = false
  end
end

--Function *Shows help menu*
function listHelp()
  resetGpu()
  clear()
  gpu.setBackground(standard)
  gpu.fill(0*vw, 2*vh, 100*vw, 2*vh, " ")
  gpu.fill(0*vw, 98*vh, 100*vw, 2*vh, " ")
  resetGpu()
  gpu.set(50*vw - (#"AUNIS Dialing Program Help (F6)" / 2), 6*vh, "AUNIS Dialing Program Help (F6)")
  local descrip = "This AUNIS Mod dialing program is designed to dial the stargates;from the AUNIS mod (Link below).;This program converts symbols into single characters for dialing.;See all keybinds by pressing F1"
  local link = "https://www.curseforge.com/minecraft/mc-mods/aunis"
  local y = 10*vh
  for num,line in ipairs(split(descrip, ";", 1)) do
    gpu.set(50*vw - (#line / 2), y, line)
    y = y + 2*vh
  end
  gpu.setForeground(0x0000AA)
  gpu.set(50*vw - (#link / 2), y+5*vh, link)
  resetGpu()
  gpu.set(50*vw - (#"Press \"F6\" to Escape" / 2), 95*vh, "Press \"F6\" to Escape")

  gpu.setBackground(standard)
  gpu.fill(5*vw, 30*vh, 30*vw, 2*vh, " ")
  gpu.fill(5*vw, 58*vh, 31*vw, 2*vh, " ")
  gpu.fill(5*vw, 30*vh, 1*vw, 28*vh, " ")
  gpu.fill(35*vw, 30*vh, 1*vw, 28*vh, " ")
  resetGpu()
  gpu.set(20.5, 30*vh, "Home Screen Buttons")
  gpu.set(7*vw, 34*vh, "[Dial] - Dials the gate")
  gpu.set(7*vw, 38*vh, "[Toggle Beamer] - Togggles the gate beamer")
  gpu.set(7*vw, 42*vh, "[Abort] - Shutdown gate dialing")
  gpu.set(7*vw, 46*vh, "[Switch] - Switch gate type")
  gpu.set(7*vw, 50*vh, "[Keybinds] - Shows list of keybinds")
  gpu.set(7*vw, 54*vh, "[Compiler] - Shows sequence compiler")


  gpu.setBackground(standard)
  gpu.fill(53*vw, 30*vh, 43*vw, 2*vh, " ")
  gpu.fill(53*vw, 50*vh, 43.5*vw, 2*vh, " ")
  gpu.fill(53*vw, 30*vh, 1*vw, 20*vh, " ")
  gpu.fill(95*vw, 30*vh, 1*vw, 20*vh, " ")
  resetGpu()
  gpu.set(70*vw, 30*vh, "Dialing the Gate")
  gpu.set(55*vw, 34*vh, "Using the keys or sequence compiler, enter a stargate address")
  gpu.set(55*vw, 38*vh, "Once done, press enter to dial the gate")
  gpu.set(55*vw, 42*vh, "The chevrons will lock into place and attempt to open the gate")
  gpu.set(55*vw, 46*vh, "Press \"Space\" or the abort button anytime to cancel the dialer")

  gpu.setBackground(standard)
  gpu.fill(5*vw, 64*vh, 50*vw, 2*vh, " ")
  gpu.fill(5*vw, 94*vh, 51*vw, 2*vh, " ")

  gpu.set(7*vw, 68*vh, "")

  resetGpu()
  local state = true
  while state == true and inbound == false do
    local key, is_control, raw, c = parseKey()
    if c == keybind_showHelp then
      state = false
    end
  end
end

--Function *Master display update*
function updateDisplay()
  resetGpu()
  listActionPanel()
  listChevronStates()
  listAddressBoxes()
  listOutputs()
  listStats()
  listStargate()
  gpu.setBackground(standard)
  gpu.fill(0*vw, 2*vh, 40*vw, 2*vh, " ")
  gpu.fill(60*vw, 2*vh, 40*vw, 2*vh, " ")
  gpu.fill(0*vw, 98*vh, 100*vw, 2*vh, " ")
  resetGpu()
end

--Function *Displays the confirmation prompt*
function confirm(bg, header, ...)
  local arg = {...}
  resetGpu()
  gpu.fill(20*vw, 10*vh, 60*vw, 50*vh, " ")
  gpu.setBackground(bg)
  gpu.fill(20*vw, 10*vh, 60*vw, 2*vh, " ")
  gpu.fill(20*vw, 60*vh, 61*vw, 2*vh, " ")
  gpu.fill(20*vw, 10*vh, 1*vw, 50*vh, " ")
  gpu.fill(80*vw, 10*vh, 1*vw, 50*vh, " ")
  gpu.fill(30*vw, 25*vh, 40*vw, 2*vh, " ")
  resetGpu()
  gpu.setForeground(bg)
  gpu.set(50*vw - (#header / 2), 18*vh, header)
  for i,m in pairs(arg) do
    if type(m) == "string" and i < len(arg) - 1 then
      gpu.set(50*vw - (#m / 2), 28*vh + (2*i*vh), m)
    end
  end
  confirm_open = true
  createButton(confirm_prompt_buttons, "yes_button", 34*vw, 46*vh, 12*vw, 8*vh, bg, arg[len(arg) - 1] or "Yes", setConfirmPromptState, true)
  createButton(confirm_prompt_buttons, "no_button", 54*vw, 46*vh, 12*vw, 8*vh, bg, arg[len(arg)] or "No", setConfirmPromptState, false)
  while confirm_response == nil do
    os.sleep(0.1)
  end
  confirm_open = false
  confirm_prompt_buttons = {}
  local out = confirm_response
  confirm_response = nil
  return out
end

--Function *Displays the prompt*
function prompt(bg, header, ...)
  local arg = {...}
  local height = len(arg)
  local blocking = arg[len(arg)]
  if blocking ~= true then
    blocking = false
  end
  resetGpu()
  gpu.fill(20*vw, 10*vh, 60*vw, 50*vh, " ")
  gpu.setBackground(bg)
  gpu.fill(20*vw, 10*vh, 60*vw, 2*vh, " ")
  gpu.fill(20*vw, 60*vh, 61*vw, 2*vh, " ")
  gpu.fill(20*vw, 10*vh, 1*vw, 50*vh, " ")
  gpu.fill(80*vw, 10*vh, 1*vw, 50*vh, " ")
  gpu.fill(30*vw, 25*vh, 40*vw, 2*vh, " ")
  resetGpu()
  gpu.setForeground(bg)
  gpu.set(50*vw - (#header / 2), 18*vh, header)
  for i,m in pairs(arg) do
    if type(m) == "string" then
      gpu.set(50*vw - (#m / 2), 28*vh + (2*i*vh), m)
    end
  end
  resetGpu()
  if blocking == true then
    gpu.setForeground(bg)
    local escape = "Press \"Enter\" or \"Space\" to Escape"
    gpu.set(50*vw - (#escape / 2), 56*vh, escape)
    resetGpu()
    local state = true
    while state == true do
      local key, is_control, raw = parseKey()
      if raw == 13 or key == " " then
        state = false
      end
    end
    clear()
    updateDisplay()
  end
end

--Function *Dials symbol at index i*
function dial(i)
  if address[i] == nil then
    dialing = false
    --Engage Gate
    failed = true
    event.ignore("stargate_spin_chevron_engaged", lockChevron)
    if sgspin ~= nil then
      event.cancel(sgspin)
    end
    return
  end
  local point = points[address[i]][gate_type]
  if point == "Giza (POO)" then
    sg.engageSymbol("Point of Origin")
  elseif point == "Subido (POO)" then
    sg.engageSymbol("Subido")
  elseif point == "Glyph 17 (POO)" then
    sg.engageSymbol("Glyph 17")
  else
    sg.engageSymbol(point)
  end
end

--Callback *Callback function for stargate chevron locking*
function lockChevron(event, addr, caller, num, final_chevron, symbol)
  if chevrons[num - 1] ~= false then
    return
  end
  if gate_type == "UNIVERSE" and len(address) == num then
    final_chevron = true
  end
  if gate_type == "MILKYWAY" or gate_type == "PEGASUS" then
    os.sleep(0.5)
  elseif gate_type == "UNIVERSE" and final_chevron == false and sigterm == false then
    os.sleep(1)
  end
  chevrons[num - 1] = symbol
  clear()
  resetGpu()
  updateDisplay()
  if final_chevron == true or symbol == "Point of Origin" then
    local status, name, descrip, state = sg.engageGate()
    fail_type = state
    if status == "stargate_engage" then
      active = true
      failed = false
    else
      active = false
      failed = true
    end
    dialing = false
    event.ignore("stargate_spin_chevron_engaged", lockChevron)
    event.cancel(sgspin)
  elseif sigterm == true then
    dialing = false
    failed = true
    fail_type = "USER_MANUAL_OVERRIDE"
    sg.engageGate()
    event.ignore("stargate_spin_chevron_engaged", lockChevron)
    if sgspin ~= nil then
      event.cancel(sgspin)
    end
  elseif inbound == true then
    dialing = false
    event.ignore("stargate_spin_chevron_engaged", lockChevron)
    if sgspin ~= nil then
      event.cancel(sgspin)
    end
  else
    dial(num)
  end
end

--Callback *Callback for stargate inbound wormhole*
function inboundConnection(event, address, caller, address_size)
  if dialing == true then
    dialing = false
    failed = false
    active = false
  end
  inbound = true
  beginInboundLoop(address_size)
end

--Callback *Callback for stargate dial failure*
function sequenceFailure(event, address, caller)
  os.sleep(1)
  --sg.engageGate()
  dialing = false
  failed = true
  active = false
  fail_type = "ADDRESS_MALFORMED"
  event.ignore("stargate_spin_chevron_engaged", lockChevron)
  if sgspin ~= nil then
    event.cancel(sgspin)
  end
  fill(chevrons, false)
  address = {}
  index = 0
end

--Callback *Callback for unexpected gate close "For when the gate runs out of power"*
function closeGate(event, address, caller, reason)
  active = false
  inbound = false
  dialing = false
  if reason == "connection_lost" then
    prompt(0xFF0000, "Stargate Error 499", "Connection to target gate terminated", true)
  elseif reason == "out_of_power" then
    prompt(0xFF0000, "Stargate Error 424", "Insufficient power to gate", true)
  elseif reason == "command" then
    prompt(0xFF0000, "Stargate Error 500", "Gate forcefully killed", true)
  end
end

--Callback *Callback for matter stream transit*
function gateTravel(event, address, caller, inbound, player)
  if inbound == false then
    local time = 3
    for a=1,time do
      os.sleep(1)
    end
    active = false
    --sg.disengageGate()
    end
  if inbound == true then
     prompt(0xFF0000, "Warning", "Incoming traveller", true)
  end
end

--Callback *Callback for gate wormhole close*
function fullClose(event, address, caller, initer)
  closed_fully = true
end

--Callback *Callback for screen touch*
function onScreenTouch(event, address, x, y, button_number, player)
  if compiler_open == true and confirm_open == false then
    for id, button in pairs(symbol_buttons) do
      if (x >= button["x"] and x <= button["x"] + button["w"]) and (y >= button["y"] and y <= button["y"] +  button["h"]) then
        local func = button["function"]
        local args = button["args"]
        if func ~= nil then
          func(args)
        else
          print("No bound function")
        end
      end
    end
  elseif book_open == true and confirm_open == false then
    for id, button in pairs(old_addr_buttons) do
      if (x >= button.x and x <= button.x + button.w) and (y >= button.y and y <= button.y + button.h) then
        if button_number == 0 then
          local func = button["function"]
          local args = button.args
          if func ~= nil then
            func(args)
          else
            print("No bound function")
          end
        elseif button_number == 1 then
          deleteAddress(button.args)
        end
      end
    end
  elseif confirm_open == true then
    for id, button in pairs(confirm_prompt_buttons) do
      if (x >= button.x and x <= button.x + button.w) and (y >= button.y and y <= button.y + button.h) then
        local func = button["function"]
        local args = button.args
        if func ~= nil then
          func(args)
        else
          print("No bound function")
        end
      end
    end
  elseif confirm_open == false then
    for id, button in pairs(buttons) do
      if (x >= button.x and x <= button.x + button.w) and (y >= button.y and y <= button.y + button.h) then
        local func = button["function"]
        local args = button.args
        if func ~= nil then
          func(args)
        else
          print("No bound function")
        end
      end
    end
  end
end

--Callback *Callback for dhd key press*
function onDhdPress(event, caller, count, lock, name)
  if dhd_alert == false then
    dhd_alert = true
    local res = confirm(0xFFB600, "Stargate Alert", "DHD key press detected", "", "Shutdown Gate?", "Yes", "No")
    if res == true then
      if sg.getGateStatus() == "open" then
        sg.disengageGate()
      else
        sg.engageGate()
      end
    end
    dhd_alert = false
    clear()
    updateDisplay()
  end
end

--Callback *Callback for key press*
function onKeyPress(event, address, char, code, player)
  char = unicode.char(char)
  if active == true then
    if char == " " then
      active = false
      --sg.disengageGate()
    end
  elseif dialing == true then
    if char == " " or code == 28 then
      prompt(0xFFB600, "Gate Manual Override", "Override engaged", "Gate will shutdown on next chevron")
      sigterm = true
    end
  end
end

--Function *Halts the program until gate is idle*
function beginDialSequence()
  if len(address) == 0 then
    failed = true
    fail_type = "NULL_ADDRESS"
  else
    beginDialLoop()
    saveAddress()
  end
  if active == true then
    beginActiveLoop()
  elseif failed == true then
    index = 0
    fill(chevrons, false)
    address = {}
    if fail_type == "ADDRESS_MALFORMED" then
      prompt(0xFF0000, "Sequence Failed", "The given sequnce", "did not lock", true)
    elseif fail_type == "NOT_ENOUGH_POWER" then
      prompt(0xFF0000, "Sequence Failed", "Not enough power to dial", true)
    elseif fail_type == "BUSY" then
      prompt(0xFF0000, "Sequence Failed", "Target gate is active", true)
    elseif fail_type == "USER_MANUAL_OVERRIDE" then
      prompt(0xFF0000, "Sequence Failed", "Stargate dialing sequence", "was manually terminated", true)
    elseif fail_type == "NULL_ADDRESS" then
      prompt(0xFF0000, "Sequence Error", "No sequence compiled", true)
    else
      prompt(0xFF0000, "Sequence Failed", "Unknown Stargate Error", "Error: ", fail_type, true)
    end
  end
  address = {}
end

--Function *Halts the program until dialing is complete*
function beginDialLoop()
  if dialing then
    return false
  end
  if sgspin == nil then
    local sgspin = event.listen("stargate_spin_chevron_engaged", lockChevron)
  end
  if sgfail == nil then
    local sgfail = event.listen("stargate_failed", sequenceFailure)
  end
  dialing = true
  dial(0)
  clear()
  updateDisplay()
  while dialing do
    os.sleep(0.1)
  end
end

--Function *Halts the program until active gate is shutdown*
function beginActiveLoop()
  --saveAddress()
  if active == false or failed == true then
    return false
  end
  updateDisplay()
  prompt(0x00FF00, "Complete", "Sequence Locked; Press \"Space\" to Disengage", false)
  --clear()
  resetGpu()
  while active == true do
    os.sleep(0.1)
    listStats()
  end
  sg.disengageGate()
  resetGpu()
  clear()
  updateDisplay()
  address = {}
  fill(chevrons, false)
  index = 0
  resetGpu()
  while closed_fully == false do
    os.sleep(0.1)
  end
end

--Function *Halts program until inbound gate is shutdown*
function beginInboundLoop(size)
  clear()
  if size ~= nil then
    for i=1,size do
      chevrons[i - 1] = true
    end
  end
  updateDisplay()
  prompt(0xFFB600, "Stargate Alert", "Inbound Wormhole", "Stargate dialed from "..size.." symbol address")
  while inbound == true do
    os.sleep(0.1)
  end
  sg.disengageGate()
  clear()
  updateDisplay()
  fill(chevrons, false)
  clear()
  updateDisplay()
  fully_closed = false
  while full_closed == false do
    os.sleep(0.1)
  end
end

--Main code loop *Event listener creation*
clear()
--event.onError(threadHandler)
local sgin = event.listen("stargate_incoming_wormhole", inboundConnection)
local sgclose = event.listen("stargate_close", closeGate)
local screentouch = event.listen("touch", onScreenTouch)
local keypress = event.listen("key_down", onKeyPress)
local sgtravel = event.listen("stargate_traveler", gateTravel)
local sgfullclose = event.listen("stargate_wormhole_closed_fully", fullClose)
local dhdpress = event.listen("stargate_dhd_chevron_engaged", onDhdPress)

--Main code loop *Main loop*
function main()
--local res = confirm(0x00FF00, "Test", "Y/N", "Y", "N")
--print(res)
--os.sleep(3)
if sg.getGateStatus() ~= "not_merged" and sg.getGateStatus() ~= "idle" then
  sg.disengageGate()
end
if first == false then
  listHelp()
  first = true
end
while state == true do
  clear()
  updateDisplay()
  if address[index - 1] == "q" then
    prompt(standard, "Sequence Complete", "Sequence Entry Complete", "Press \"Enter\" to dial", false)
  end
  local key, is_control, raw, c, d = parseKey()
  if is_control == true then
    if raw == 13 then
      beginDialSequence()
    elseif raw == 8 and index > 0 then
      index = index - 1
      address[index] = nil
    elseif c == keybind_showKeybindsList then
      listKeyBinds()
    elseif c == keybind_toggleIris then
      prompt(0xFF0000, "Component Failure", "No iris system implemented", true)
    elseif c == 42 then
      quit()
    elseif c == keybind_showSequenceCompiler then
      listSequenceCompiler()
    elseif c == keybind_showOldAddresses then
      listOldAddresses()
      --prompt(0xFF0000, "Access Failure", "System WIP; Access Denied", "System Error 5", true)
    elseif c == keybind_showHelp then
        listHelp()
    elseif c == keybind_switchGateType then
      index = 0
      address = {}
      local new_gate_type
      if gate_type == "MILKYWAY" then
        new_gate_type = "PEGASUS"
        prompt(0xFFb600, "Gate Alert", "Switched gate type to \"Pegasus\"", true)
      elseif gate_type == "PEGASUS" then
        new_gate_type = "UNIVERSE"
        prompt(0xFFb600, "Gate Alert", "Switched gate type to \"Universe\"", true)
      elseif gate_type == "UNIVERSE" then
        new_gate_type = "MILKYWAY"
        prompt(0xFFb600, "Gate Alert", "Switched gate type to \"Milky Way\"", true)
      end
      sg = require("component").stargate
      local new = sg.getGateType()
      if new_gate_type ~= new then
        local res = confirm(0xFFB600, "Unequal Gate Type Alert", "The selected gate type does", "not match the selected gate", "", "Keep Changes?", "Yes", "No")
        if res == true then
          if gate_type == "MILKYWAY" then
            gate_type = "PEGASUS"
            --points = p_points
          elseif gate_type == "PEGASUS" then
            gate_type = "UNIVERSE"
            --points = u_points
          elseif gate_type == "UNIVERSE" then
            gate_type = "MILKYWAY"
            --points = mw_points
          end
        else
          gate_type = new
        end
      else
        gate_type = new_gate_type
      end
    end
  else
    if len(address) == 9 then
      prompt(0xFF0000, "Pre-Sequence Error", "Address Full", "Cannot append symbol to list", true)
    elseif points[key] ~= nil and points[key][gate_type] ~= nil then
      if count(address, key) >= 1 then
        prompt(0xFF0000, "Pre-Sequence Error", "Duplicate Keys", "Key \""..key.."\" is already listed", true)
      else
        if indexof(address, "q") ~= -1 then
          prompt(0xFFb600, "Pre-Sequence Alert", "\"Point of Origin\" already listed", true)
        end
        address[index] = key
        index = index + 1
      end
    else
      prompt(0xFF0000, "Pre-Sequence Error", "Unkown Key", "Key \""..key.."\" is not recognized", true)
    end
  end
end

quit()

end

--Error handling
if debug_mode == false then
local p_res, error = pcall(main)
if p_res == false and forced_exit == false then
  prompt(0xFF0000, "Critical Error", "The program has encountered an unexpected error", true)
  --[=====[
  if dialing == true then
    local res = sg.engageGate()
    if res ~= nil then
      os.sleep(3)
      sg.disengageGate()
    end
  elseif active == true then
    sg.disengageGate()
  end
  --]=====]
  quit()
end
else
  main()
end