todoer.nvim/plugin/todoer.lua

print("primer keymap")

vim.keymap.set("n", "<leader>t", function() end, { desc = "+Todos" })

-- add new todo line when previous is already a todo

local function on_enter()
	local current_line = vim.api.nvim_get_current_line()
	print("entro en onenter")
	-- Check if the current line matches the pattern
	local pattern = "^%- %[[ x]%] .*$"
	local match = string.match(current_line, pattern)

	if match then
		if string.len(current_line) >= 7 then
			vim.api.nvim_feedkeys("\n- [ ] ", "n", true)
		else
			-- go to normal mode before removing the content of the line
			vim.api.nvim_feedkeys(vim.api.nvim_eval('"\\<esc>"'), "n", true)
			vim.api.nvim_feedkeys("_", "n", true)
			vim.api.nvim_feedkeys("C", "n", true)
			vim.api.nvim_feedkeys("\n", "n", true)
			-- vim.api.nvim_set_current_line("")
		end
	else
		vim.api.nvim_feedkeys("\n", "n", true)
	end
end
vim.keymap.set("i", "<CR>", on_enter, { desc = "On enter", noremap = false, expr = true })

print("segundo keymap")

-- function that checks if the current line starts with the string "- [ ]" or "- [x]" and toggles the x
local function toggle_todo()
	local line = vim.api.nvim_get_current_line()
	if string.sub(line, 1, 5) == "- [ ]" then
		line = string.sub(line, 6, -1)
		line = "- [x]" .. line
		vim.api.nvim_set_current_line(line)
	elseif string.sub(line, 1, 5) == "- [x]" then
		line = string.sub(line, 6, -1)
		line = "- [ ]" .. line
		vim.api.nvim_set_current_line(line)
	elseif string.sub(line, 1, 5) == "# [ ]" then
		line = string.sub(line, 6, -1)
		line = "# [x]" .. line
		vim.api.nvim_set_current_line(line)
	elseif string.sub(line, 1, 5) == "# [x]" then
		line = string.sub(line, 6, -1)
		line = "# [ ]" .. line
		vim.api.nvim_set_current_line(line)
	end
end
vim.keymap.set("n", "<leader>tt", toggle_todo, { desc = "Toggle todo" })

print("tercero")
-- function that checks if the current line doesn't start with the string "- [ ] " and, if it doesn't, adds the string at the beginning of the line
local function add_todo()
	local line = vim.api.nvim_get_current_line()
	if string.sub(line, 1, 5) ~= "- [ ] " then
		line = "- [ ] " .. line
		vim.api.nvim_set_current_line(line)
		vim.api.nvim_feedkeys("A", "n", true)
	end
end
vim.keymap.set("n", "<leader>ta", add_todo, { desc = "Add todo" })

-- function that checks if the current line starts with the string "- [ ]" or "- [x]" and, if it does, removes that string from the line
local function remove_todo()
	local line = vim.api.nvim_get_current_line()
	if string.sub(line, 1, 6) == "- [ ] " or string.sub(line, 1, 6) == "- [x] " then
		line = string.sub(line, 7, -1)
		vim.api.nvim_set_current_line(line)
	end
end
vim.keymap.set("n", "<leader>td", remove_todo, { desc = "Remove todo" })