local dim = require("common.dimensions")

PAGE_DEFAULT_FONT_SIZE = 24
PAGE_DEFAULT_FONT_FACE = "dfmarugoth.ttf"
PAGE_DEFAULT_FONT_COLOR = {255, 255, 255, 255}
PAGE_DEFAULT_MARGIN = {72, 24, 0, 56} --{left, top, right, bottom}
PAGE_DEFAULT_SPACING = 4
PAGE_DEFAULT_FOOTER = {
    "BT-A/BT-B = UP/DOWN",
    "START = SELECT",
    "BACK = RETURN TO LAST PAGE"
}

function DrawPageFooter(footer)
    local bottomPageMargin = PAGE_DEFAULT_MARGIN[4]
    local lineHeight = PAGE_DEFAULT_FONT_SIZE + PAGE_DEFAULT_SPACING
    gfx.BeginPath()
    gfx.FontSize(PAGE_DEFAULT_FONT_SIZE)
    gfx.LoadSkinFont(PAGE_DEFAULT_FONT_FACE)
    gfx.FillColor(table.unpack(PAGE_DEFAULT_FONT_COLOR))
    gfx.TextAlign(gfx.TEXT_ALIGN_CENTER | gfx.TEXT_ALIGN_BOTTOM)
    if type(footer) == "table" then
        for index, line in ipairs(footer) do
            local yFooterBase = dim.design.height - bottomPageMargin - #footer * lineHeight
            gfx.Text(line, 1080 / 2, yFooterBase + (index-1) * lineHeight)
        end
    elseif type(footer) == "string" then
        local yFooterBase = dim.design.height - bottomPageMargin
        gfx.Text(footer, 1080 / 2, yFooterBase)
    end
end

---Default button input handler
---@param page Page
---@param button integer
function HandlePageButtonInput(page, button)
    local direction = 0

    if button == game.BUTTON_BCK then
        page.viewHandler:back()
        return
    end

    if button == game.BUTTON_BTA then
        direction = -1
    elseif button == game.BUTTON_BTB then
        direction = 1
    end

    page.selectedIdx = (page.selectedIdx - 1 + direction) % #page.fields + 1
end