incDecMantineSizesInNeovim.lua

-- Increment and decrement Mantine sizes in Neovim
-- But it's better to use the "switch" plugin

sizes = {"xs", "sm", "md", "lg", "xl"}

size_inc_map = {}
for i=1, #sizes do
    local next_i = i % #sizes + 1
    size_inc_map[sizes[i]] = sizes[next_i]
end
size_dec_map = {}
for i=1, #sizes do
    local prev_i = (i - 2) % #sizes + 1
    size_dec_map[sizes[i]] = sizes[prev_i]
end

function _G.adjust_size(direction)
  local map = {}
  if direction == "inc" then
    map = size_inc_map
  else
    map = size_dec_map
  end

  local line, col = unpack(vim.api.nvim_win_get_cursor(0))
  col = col + 1  -- Adjust for 0-indexing
  local current_line = vim.api.nvim_get_current_line()
  local pattern = "%f[%a](xs)%f[%A]"
  local s, e = string.find(current_line, pattern, col)
  for _, size in ipairs(sizes) do
    local size_pattern = "%f[%a](" .. size .. ")%f[%A]"
    s, e = string.find(current_line, size_pattern, col)
    if s and e then
      local new_size = map[size] or size
      local before = string.sub(current_line, 1, s-1)
      local after = string.sub(current_line, e+1)
      vim.api.nvim_set_current_line(before .. new_size .. after)
      vim.api.nvim_win_set_cursor(0, {line, s-1})
      return
    end
  end
end

vim.keymap.set("n", "++", ":lua adjust_size('inc')<CR>")
vim.keymap.set("n", "+-", ":lua adjust_size('dec')<CR>")