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

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

local function press_enter()
	local current_line = vim.api.nvim_get_current_line()
	-- 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>", press_enter, { desc = "On enter", noremap = true, expr = true })

-- function that checks if the current line starts with the string "- [ ]" or "- [x]" and toggles the x

local function toggle_todo()
	-- create a variable called openpattern with a pattern that matches a string that starts with any amount of spaces or tabs followed by "- [ ]"
	local openpattern = "^%s*%- %[[ x]%]"

	-- create a variable called closepattern with a pattern that matches a string that starts with any amount of spaces or tabs followed by "- [x]"
	local closedpattern = "^%s*%- %[[ x]%]"

	-- create a variable called titleopenpattern with a pattern that matches a string that starts with "# [ ]"
	local titleopenpattern = "^# [ ]"

	-- create a variable called titleclosedpattern with a pattern that matches a string that starts with "# [x]"
	local titleclosedpattern = "^# [x]"

	local line = vim.api.nvim_get_current_line()

	if string.match(line, openpattern) then
		line = string.gsub(line, openpattern, "- [x]")
		vim.api.nvim_set_current_line(line)
	elseif string.match(line, closedpattern) then
		line = string.gsub(line, closedpattern, "- [ ]")
		vim.api.nvim_set_current_line(line)
	elseif string.match(line, titleopenpattern) then
		line = string.gsub(line, titleopenpattern, "# [x]")
		vim.api.nvim_set_current_line(line)
	elseif string.match(line, titleclosedpattern) then
		line = string.gsub(line, titleclosedpattern, "# [ ]")
		vim.api.nvim_set_current_line(line)
	end

	-- 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" })

-- 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" })