local augroup = vim.api.nvim_create_augroup
local autocmd = vim.api.nvim_create_autocmd

local c = augroup("c", { clear = true })
local latex = augroup("latex", { clear = true })
local mail = augroup("mail", { clear = true })
local misc = augroup("misc", { clear = true })
local troff = augroup("troff", { clear = true })

autocmd("InsertEnter", { command = 'norm zz', group = misc })
autocmd("BufWritePre", { command = "%s/\\s\\+$//e", group = misc })
autocmd("FileType", { command = "setlocal formatoptions-=cro", group = misc })

autocmd("FileType", { pattern = 'tex,plaintex', group = latex, callback = function()
	local opts = { noremap = true }
	vim.api.nvim_set_keymap('n', '<leader>s', ':w<CR> :!pdflatex %<CR><CR>', opts)
	vim.api.nvim_set_keymap('n', '<leader>S', ':w<CR> :!pdflatex %<CR>', opts)
	vim.api.nvim_set_keymap('n', '<leader>p', ':!zathura %:r.pdf &<CR>', opts)
end })

autocmd("FileType", { pattern = "c", command = ':setlocal cindent', group = c })

autocmd("BufEnter", { pattern = "neomutt-*", command = ':$read /home/mario/.local/share/signature.txt', group = mail })

autocmd("FileType", { pattern = "nroff", group = troff, callback = function()
	local opts = { noremap = true }
	vim.api.nvim_set_keymap('n', '<leader>s', ':w<CR> :!groff -e -ms % -T pdf > %:r.pdf<CR>', opts)
	vim.api.nvim_set_keymap('n', '<leader>p', ':!zathura %:r.pdf & disown<CR>', opts)
	vim.api.nvim_set_keymap('i', 'ee', '\\[`e]', opts)
	vim.api.nvim_set_keymap('i', 'aa', '\\[`a]', opts)
	vim.api.nvim_set_keymap('i', 'ii', '\\[`i]', opts)
	vim.api.nvim_set_keymap('i', 'oo', '\\[`o]', opts)
	vim.api.nvim_set_keymap('i', 'uu', '\\[`u]', opts)
end })
autocmd("FileType", { pattern = "xmath", group = troff, command = ':set filetype=nroff' })
autocmd({ "BufNew", "Filetype" }, { pattern = 'xmath', command = ':-1read ~/doc/pers/groff_template.ms' })