require("titlescreen.service.common")

---@class Page
local Page = {
    title = "",
    selectedIdx = 0,
    fields = {}, ---@type Field[]
    footer = PAGE_DEFAULT_FOOTER,
    viewHandler = nil ---@type PageView
}

function Page:new(o, parent, title)
    o = o or {}
    setmetatable(o, self)
    self.__index = self
    self.parent = parent or nil
    self.title = title or ""
    return o
end

---Add field to page
---@param field Field
function Page:addField(field)
    field.parent = self
    table.insert(self.fields, field)
end

function Page:handleButtonInput(button)
    if self.fields[selectedIndex] and self.fields[selectedIndex].handleButtonInput then
        self.fields[selectedIndex].handleButtonInput(button)
    else
        HandlePageButtonInput(self, button)
    end
end

function Page:handleKnobInput(knob, delta)
    if self.fields[selectedIndex] and self.fields[selectedIndex].handleKnobInput then
        self.fields[selectedIndex].handleKnobInput(knob, delta)
    end
end

function Page:render(deltaTime)
    --render page stuff
    ---background
    ---header
    ---footer
    if self.fields[selectedIndex] and self.fields[selectedIndex].drawCustomFooter then
        self.fields[selectedIndex].drawCustomFooter()
    else
        DrawPageFooter(self.footer)
    end

    --render children
    for _, field in ipairs(self.fields) do
        field.render(deltaTime)
    end
end

return Page