-- Source: https://github.com/tjdevries/advent-of-nvim/blob/master/nvim/plugin/floaterminal.lua
vim.keymap.set("t", "<ESC><ESC>", "<C-\\><C-n>")

vim.api.nvim_create_autocmd("TermOpen", {
  group = vim.api.nvim_create_augroup("config-term-open", { clear = true }),
  callback = function()
    vim.opt.number = false
    vim.opt.relativenumber = false
    vim.cmd("startinsert")
  end,
})

local function create_terminal()
  vim.cmd.vnew()
  vim.cmd.term()
  vim.cmd.wincmd("J")
  vim.api.nvim_win_set_height(0, 15)
end

vim.keymap.set("n", "<Leader>T", create_terminal, { desc = "Open a terminal" })

local state = {
  floating = {
    buf = -1,
    win = -1,
  },
}

local function create_floating_window(opts)
  opts = opts or {}
  local width = opts.width or math.floor(vim.o.columns * 0.8)
  local height = opts.height or math.floor(vim.o.lines * 0.8)

  local col = math.floor((vim.o.columns - width) / 2)
  local row = math.floor((vim.o.lines - height) / 2)

  local buf = nil
  if vim.api.nvim_buf_is_valid(opts.buf) then
    buf = opts.buf
  else
    buf = vim.api.nvim_create_buf(false, true)
  end

  local win_config = {
    border = "double",
    style = "minimal",
    relative = "editor",
    width = width,
    height = height,
    col = col,
    row = row,
  }

  local win = vim.api.nvim_open_win(buf, true, win_config)

  return { buf = buf, win = win }
end

vim.api.nvim_create_user_command("Floaterminal", function()
  if not vim.api.nvim_win_is_valid(state.floating.win) then
    state.floating = create_floating_window({ buf = state.floating.buf })
    if vim.bo[state.floating.buf].buftype ~= "terminal" then
      vim.cmd.term()
    else
      vim.cmd("startinsert")
    end
  else
    vim.api.nvim_win_hide(state.floating.win)
  end
end, {})

vim.keymap.set("n", "<Leader>t", "<CMD>Floaterminal<CR>", { desc = "Opens a floating terminal" })