-- Copyright (C) 2018-2021 by KittenOS NEO contributors
--
-- Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted.
--
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
-- THIS SOFTWARE.

-- app-telnet.lua : just a utility now
-- Authors: 20kdc

local inet = neo.requireAccess("c.internet", "internet").list()()

local _, _, termId = ...
local ok = pcall(function ()
 assert(string.sub(termId, 1, 12) == "x.neo.pub.t/")
end)

local termClose

if not ok then
 termId = nil
 assert(neo.executeAsync("svc-t", function (res)
  termId = res.access
  termClose = res.close
  neo.scheduleTimer(0)
 end, "kmt"))
 while true do
  if coroutine.yield() == "k.timer" then break end
 end
end
local term = neo.requireAccess(termId, "terminal")

term.write([[
┎┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┒
┋         ┃ ╱  ┃╲    ╱┃  ▀▀┃▀▀         ┋
┋         ┃╳   ┃ ╲  ╱ ┃    ┃           ┋
┋         ┃ ╲  ┃  ╲╱  ┃    ┃           ┋
┋                                      ┋
┋      KittenOS NEO MUD Terminal       ┋
┖┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┚
export TERM=ansi.sys <- IMPORTANT!!!
Enter target server:port...
]])

local targetBuffer = ""

neo.scheduleTimer(0)
while true do
 local e = {coroutine.yield()}
 if e[1] == "k.timer" then
  while tcp do
   local b, e = tcp.read(neo.readBufSize)
   if not b then
    if e then
     term.write("\nkmt: " .. tostring(e) .. "\n")
     tcp.close()
     tcp = nil
    end
   elseif b == "" then
    break
   else
    term.write(b)
   end
  end
  neo.scheduleTimer(os.uptime() + 0.049)
 elseif e[1] == "k.procdie" then
  if e[3] == term.pid then
   break
  end
 elseif e[1] == termId then
  if targetBuffer and e[2] == "data" then
   targetBuffer = targetBuffer .. e[3]:gsub("\r", "")
   local p = targetBuffer:find("\n")
   if p then
    local ok, res, rer = pcall(inet.connect, targetBuffer:sub(1, p - 1))
    targetBuffer = targetBuffer:sub(p + 1):gsub("\n", "\r\n")
    if not ok then
     -- Likes to return this kind
     term.write("kmt: " .. tostring(res) .. "\n")
    elseif not res then
     -- Could theoretically return this kind
     term.write("kmt: " .. tostring(rer) .. "\n")
    else
     -- Hopefully this kind
     term.write("kmt: Connecting...\n")
     tcp = res
     tcp.write(targetBuffer)
     targetBuffer = nil
    end
   end
  elseif tcp and e[2] == "data" or e[2] == "telnet" then
   tcp.write(e[3])
  end
 end
end

if tcp then
 tcp.close()
end