local KeyConfigScene = SCENE:extend()
KeyConfigScene.title = "Key Config"

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

local input_names = {
    menu_decide='Confirm Selection',
    menu_back = 'Go Back',
    left='Left',
    right='Right',
    up='Up',
    down='Down',
    rotate_left='Rotate Counter-clockwise',
    rotate_left2='Rotate Counter-clockwise (2)',
    rotate_right='Rotate Clockwise',
    rotate_right2='Rotate Clockwise (2)'
}


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 = {}
end

function KeyConfigScene:update()
end

function KeyConfigScene:render()
    MainBackground()
    for i, input in ipairs(configurable_inputs) do
        drawText(input_names[input], 40, 50 + i * 20, 200, "left")
        if self.set_inputs[input] then
            drawText(self.set_inputs[input], 240, 50 + i * 20, 300, "left")
        end
    end
    if self.input_state > #configurable_inputs then
        drawText("Press enter to confirm, delete/backspace to retry" .. (SETTINGS.input and ", escape to cancel" or ""),0,0,1000)
    else
        drawText("Press key input for " .. input_names[configurable_inputs[self.input_state]] .. ", tab to skip, escape to cancel",0,0,1000)
        drawText("Function keys (F1, F2, etc.), escape, and tab can't be changed", 0, 20,1000)
    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(SETTINGS.firstTime)
        elseif self.input_state > #configurable_inputs then
            if e.scancode == "return" then
                SETTINGS.input.keys = self.new_input
                SCENE = SETTINGS.firstTime and TitleScene() or InputConfigScene()
                SETTINGS.firstTime = false
            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 not self.new_input[e.scancode] 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