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()
	local openpattern = "^%s*%- %[[ ]%]"
	local closedpattern = "^%s*%- %[[x]%]"
	local titleopenpattern = "^%s*# %[[ ]%]"
	local titleclosedpattern = "^%s*# %[[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
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 openpattern = "^%s*%- %[[ ]%]"
	local closedpattern = "^%s*%- %[[x]%]"

	local line = vim.api.nvim_get_current_line()
	local index, spaces = string.find(line, "^%s*")

	if index == 1 and not string.match(line, openpattern) and not string.match(line, closedpattern) then
		if index == 1 and spaces == 0 then
			line = "- [ ] " .. line
			vim.api.nvim_set_current_line(line)
		elseif index == 1 and spaces > 0 then
			local spacestring = ""
			for x = 1, spaces, 1 do
				spacestring = spacestring .. " "
			end
			line = spacestring .. "- [ ] " .. line
		end
	end
	-- if not string.sub(line, 1, 1) == " " then
	-- 	line = "- [ ] " .. line
	-- 	vim.api.nvim_set_current_line(line)
	-- else
	-- 	line = "- [ ]" .. line
	-- 	vim.api.nvim_set_current_line(line)
	-- 	end
	-- 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 openpattern = "^%s*%- %[[ ]%]"
	local closedpattern = "^%s*%- %[[x]%]"
	local line = vim.api.nvim_get_current_line()

	if string.match(line, openpattern) or string.match(line, closedpattern) then
		line = string.gsub(line, openpattern, "")
		line = string.gsub(line, closedpattern, "")
		vim.api.nvim_set_current_line(line)
	end
end
vim.keymap.set("n", "<leader>td", remove_todo, { desc = "Remove todo" })