autocmds.lua

-- ~/.config/nvim/lua/config/autocmds.lua
-- ------------------------------------
-- Markdown Settings
-- ------------------------------------
-- Markdown textwidth (Define when Linebreaks occur)
-- ------------------------------------
vim.api.nvim_create_autocmd({"FileType", "BufEnter"}, {
	pattern = "*.md",
	callback = function()
		if vim.bo.filetype == "markdown" then
			vim.opt_local.textwidth = 70
		end
	end,
})

-- CMD's for Markdown files
vim.api.nvim_create_autocmd("FileType", {
	pattern = "markdown",
	callback = function()
		vim.cmd("SoftPencil")
	end,
})

-- ------------------------------------
-- MISC
-- ------------------------------------
-- Pywal auto-reload
-- ------------------------------------
vim.api.nvim_create_autocmd({ "BufWritePost", "FileChangedShell" }, {
	group = vim.api.nvim_create_augroup("PywalAutoReload", { clear = true }),
	pattern = vim.fn.expand("~/.cache/wal/colors-wal.vim"),
	callback = function()
		if vim.fn.filereadable(vim.fn.expand("~/.cache/wal/colors-wal.vim")) == 1 then
			vim.cmd("silent! source ~/.cache/wal/colors-wal.vim")
		end
	end,
})


-- ------------------------------------
-- User commands
-- ------------------------------------
-- Convert .md to PDF
-- ------------------------------------
vim.api.nvim_create_user_command("ConvertToPDF", function()
	local choice = vim.fn.inputlist({
		"Select template:",
		"1. University (uni.latex)",
		"2. Simple (simple.latex)"
	})

	if choice < 1 or choice > 2 then return end

	local templates = { "uni", "simple" }
	local script = vim.fn.expand("~/bin/md2pdf.sh")

	if vim.fn.filereadable(script) == 1 then
		vim.cmd("lcd %:p:h | !" .. script .. " %:p " .. templates[choice])
	else
		vim.notify("md2pdf.sh not found", vim.log.levels.ERROR)
	end
end, {})

-- ------------------------------------
-- --- Kitty Font Switch for .md --- --
-- ------------------------------------
local default_font_conf = "~/.config/kitty/font_default.conf"
local markdown_font_conf = "~/.config/kitty/font_markdown.conf"

local function switch_kitty_font()
  local current_ft = vim.bo.filetype
  local buf_name = vim.api.nvim_buf_get_name(0)

  -- 1. to .md font
  if current_ft == "markdown" then
    local cmd = string.format("kitty @ load-config %s", markdown_font_conf)
    vim.schedule(function() vim.fn.system(cmd) end)
    return
  end

  -- 2. Wenn wir im Prose-Analyzer oder in der Toolbar sind: TU NICHTS.
  -- Das behält die aktuelle Schriftart (Markdown) einfach bei.
  if current_ft == "prose_summary" or buf_name:find("ProseAnalyzer Summary") or current_ft == "" then
    return 
  end

  -- 3. Liste standard font
  local force_default_ft = {
    ["lua"] = true,
    ["sh"] = true,
    ["python"] = true,
    ["conf"] = true,
    ["kitty"] = true,
    ["help"] = true,
  }

  -- 4. set back 
  if force_default_ft[current_ft] then
    local cmd = string.format("kitty @ load-config %s", default_font_conf)
    vim.schedule(function() vim.fn.system(cmd) end)
  end
end

local font_switcher_group = vim.api.nvim_create_augroup("KittyFontSwitcher", { clear = true })

-- toggle switch
vim.api.nvim_create_autocmd({ "FileType", "BufWinEnter" }, {
  pattern = "*",
  group = font_switcher_group,
  callback = function()
    switch_kitty_font()
  end,
})

-- back to default on quit
vim.api.nvim_create_autocmd("VimLeave", {
  group = font_switcher_group,
  callback = function()
    local cmd = string.format("kitty @ load-config %s", default_font_conf)
    vim.fn.system(cmd)
  end,
})