local KeyConfigScene = Scene:extend()

KeyConfigScene.title = "Key Config"

require 'load.save'

local configurable_inputs = {
	"menu_decide",
	"menu_back",
	"left",
	"right",
	"up",
	"down",
	"rotate_left",
	"rotate_left2",
	"rotate_right",
	"rotate_right2",
	"rotate_180",
	"hold",
	"retry",
	"pause",
}

local function newSetInputs()
	local set_inputs = {}
	for i, input in ipairs(configurable_inputs) do
		set_inputs[input] = false
	end
	return set_inputs
end

function KeyConfigScene:new()
	self.input_state = 1
	self.set_inputs = newSetInputs()
	self.new_input = {}

	DiscordRPC:update({
		details = "In menus",
		state = "Changing key config",
	})
end

function KeyConfigScene:update()
end

function KeyConfigScene:render()
	love.graphics.setColor(1, 1, 1, 1)
	love.graphics.draw(
		backgrounds["input_config"],
		0, 0, 0,
		0.5, 0.5
	)

	love.graphics.setFont(font_3x5_2)
	for i, input in ipairs(configurable_inputs) do
		love.graphics.printf(input, 40, 50 + i * 20, 200, "left")
		if self.set_inputs[input] then
			love.graphics.printf(self.set_inputs[input], 240, 50 + i * 20, 300, "left")
		end
	end
	if self.input_state > table.getn(configurable_inputs) then
		love.graphics.print("press enter to confirm, delete/backspace to retry" .. (config.input and ", escape to cancel" or ""))
	else
		love.graphics.print("press key input for " .. configurable_inputs[self.input_state] .. ", tab to skip" .. (config.input and ", escape to cancel" or ""), 0, 0)
		love.graphics.print("function keys (F1, F2, etc.), escape, and tab can't be changed", 0, 20)
	end
end

function KeyConfigScene:onInputPress(e)
	if e.type == "key" then
		-- function keys, escape, and tab are reserved and can't be remapped
		if e.scancode == "escape" then
			scene = InputConfigScene()
		elseif self.input_state > table.getn(configurable_inputs) then
			if e.scancode == "return" then
				-- save new input, then load next scene
				local had_config = config.input ~= nil
                if not config.input then config.input = {} end
                config.input.keys = self.new_input
				saveConfig()
				scene = had_config and InputConfigScene() or TitleScene()
			elseif e.scancode == "delete" or e.scancode == "backspace" then
				-- retry
				self.input_state = 1
				self.set_inputs = newSetInputs()
				self.new_input = {}
			end
		elseif e.scancode == "tab" then
			self.set_inputs[configurable_inputs[self.input_state]] = "skipped"
			self.input_state = self.input_state + 1
		elseif e.scancode ~= "escape" then
			-- all other keys can be configured
			self.set_inputs[configurable_inputs[self.input_state]] = "key " .. love.keyboard.getKeyFromScancode(e.scancode) .. " (" .. e.scancode .. ")"
			self.new_input[e.scancode] = configurable_inputs[self.input_state]
            self.input_state = self.input_state + 1
		end
	end
end

return KeyConfigScene