local M = {}

State = {

scratch_buf = -1,

scratch_win = -1,

}

---Creates a scratch window and opens it.

---@param conf Config | {} # Plugin configuration.

---@param scratch_handler fun(buf: integer, win: integer):nil # Handler for the scratch window.

local function create_scratch_win(conf, scratch_handler)

conf = conf or {}

local scratch_conf = conf.scratch or {}

local width = scratch_conf.width or math.floor(vim.o.columns * 0.8)

local height = scratch_conf.height or math.floor(vim.o.lines * 0.8)

local col = scratch_conf.col or math.floor((vim.o.columns - width) / 2)

local row = scratch_conf.row or math.floor((vim.o.lines - height) / 3)

local border = scratch_conf.border or "rounded"

local title_pos = scratch_conf.title_pos or "center"

local buf = -1

if vim.api.nvim_buf_is_valid(State.scratch_buf) then

buf = State.scratch_buf

else

buf = vim.api.nvim_create_buf(false, true)

end

local win_cfg = {

relative = "editor",

width = width,

height = height,

col = col,

row = row,

style = "minimal",

border = border,

title = vim.g.tmutils_selected_repl or "sh",

title_pos = title_pos,

}

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

scratch_handler(buf, win)

State.scratch_buf = buf

State.scratch_win = win

end

---Toggles a tmutils scratch.

---@param conf Config | {} # Plugin configuration.

M.toggle_scratch = function(_, conf)

if not vim.api.nvim_win_is_valid(State.scratch_win) then

create_scratch_win(conf, function(buf, win)

vim.bo[buf].syntax = vim.g.tmutils_selected_repl or "sh"

vim.bo[buf].filetype = vim.g.tmutils_selected_repl or "sh"

vim.wo[win].number = true

vim.wo[win].relativenumber = true

end)

else

vim.api.nvim_win_hide(State.scratch_win)

end

end

return M