-- play32.lua - launcher for sanjuuni combined-stream .32vid videos on CC:Tweaked
-- Usage:
--   play32 <file_or_url.32vid> [monitorSide] [textScale]
-- Examples:
--   play32 myvideo.32vid top 0.5
--   play32 https://yourhost.com/myvideo.32vid top 0.5

local args = { ... }
if #args < 1 then
  print("Usage: play32 <file_or_url.32vid> [monitorSide] [textScale]")
  return
end

local SOURCE = args[1]
local MON_SIDE = args[2]
local SCALE = tonumber(args[3])

local PLAYER_FILE = "32vid-player-mini.lua"
local PLAYER_URL  = "https://raw.githubusercontent.com/MCJack123/sanjuuni/master/32vid-player-mini.lua"

local function ensure_http()
  if not http then
    error("HTTP is disabled. Enable it in CC:Tweaked config (http.enabled=true).")
  end
end

local function download_to(url, path)
  ensure_http()
  local ok, why = http.checkURL(url)
  if ok == false then error("URL blocked by HTTP rules: " .. tostring(why)) end

  local res, err = http.get(url, { ["Cache-Control"] = "no-cache" })
  if not res then error("HTTP GET failed: " .. tostring(err)) end

  local f = fs.open(path, "w")
  if not f then res.close(); error("Can't write file: " .. path) end

  while true do
    local chunk = res.read(8192)
    if not chunk then break end
    f.write(chunk)
  end

  f.close()
  res.close()
end

local function ensure_player()
  if fs.exists(PLAYER_FILE) then return end
  print("Downloading player...")
  download_to(PLAYER_URL, PLAYER_FILE)
  print("Saved " .. PLAYER_FILE)
end

local function maybe_redirect_monitor()
  local mon = nil
  if MON_SIDE and MON_SIDE ~= "" then
    if peripheral.getType(MON_SIDE) == "monitor" then
      mon = peripheral.wrap(MON_SIDE)
    end
  else
    mon = peripheral.find("monitor")
  end

  if mon then
    if SCALE then pcall(function() mon.setTextScale(SCALE) end) end
    term.redirect(mon)
    term.setCursorPos(1, 1)
    term.clear()
  end
end

-- Main
ensure_player()
maybe_redirect_monitor()

-- Run the player. It accepts a local filename OR an HTTP URL.
shell.run(PLAYER_FILE, SOURCE)