local ADDON_NAME = "HailMaryGuildTools"
local HMGT = _G[ADDON_NAME]
if not HMGT then return end

local L = HMGT.L or LibStub("AceLocale-3.0"):GetLocale(ADDON_NAME)

function HMGT:EnsureVersionNoticeWindow()
    if self.versionNoticeWindow then
        return self.versionNoticeWindow
    end

    self.versionNoticeWindowStatus = self.versionNoticeWindowStatus or {
        width = 560,
        height = 240,
    }

    local window = self:CreateAceWindow("versionNotice", {
        title = L["VERSION_WINDOW_TITLE"] or "HMGT Version Check",
        statusText = "",
        statusTable = self.versionNoticeWindowStatus,
        width = self.versionNoticeWindowStatus.width or 560,
        height = self.versionNoticeWindowStatus.height or 240,
        backgroundTexture = "Interface\\AddOns\\HailMaryGuildTools\\Media\\HailMaryLogo.png",
        backgroundWidth = 220,
        backgroundHeight = 120,
        backgroundOffsetY = -8,
        backgroundAlpha = 0.12,
        strata = "FULLSCREEN_DIALOG",
    })
    if not window then
        return nil
    end

    local content = window:GetContent()
    local messageText = content:CreateFontString(nil, "OVERLAY", "GameFontHighlightLarge")
    messageText:SetPoint("TOPLEFT", content, "TOPLEFT", 28, -28)
    messageText:SetPoint("TOPRIGHT", content, "TOPRIGHT", -28, -28)
    messageText:SetJustifyH("CENTER")
    messageText:SetJustifyV("MIDDLE")
    messageText:SetTextColor(1, 0.82, 0.1, 1)
    messageText:SetText(L["VERSION_WINDOW_MESSAGE"] or "A new version of Hail Mary Guild Tools is available.")
    window.messageText = messageText

    local detailText = content:CreateFontString(nil, "OVERLAY", "GameFontHighlight")
    detailText:SetPoint("TOPLEFT", messageText, "BOTTOMLEFT", 0, -18)
    detailText:SetPoint("TOPRIGHT", messageText, "BOTTOMRIGHT", 0, -18)
    detailText:SetJustifyH("CENTER")
    detailText:SetJustifyV("TOP")
    if detailText.SetSpacing then
        detailText:SetSpacing(2)
    end
    detailText:SetTextColor(0.9, 0.9, 0.9, 1)
    window.detailText = detailText

    self.versionNoticeWindow = window
    return window
end

function HMGT:ShowVersionMismatchPopup(playerName, detail, sourceTag, opts)
    opts = opts or {}

    if playerName or detail or sourceTag then
        self.latestVersionMismatch = {
            playerName = playerName,
            detail = detail,
            sourceTag = sourceTag,
        }
    end

    local info = self.latestVersionMismatch or {}
    local window = self:EnsureVersionNoticeWindow()
    if not window then
        return
    end
    local hasMismatch = info.playerName or info.detail

    window:SetTitle(L["VERSION_WINDOW_TITLE"] or "HMGT Version Check")

    if hasMismatch then
        window.messageText:SetText(L["VERSION_WINDOW_MESSAGE"] or "A new version of Hail Mary Guild Tools is available.")
        window.detailText:SetText(string.format(
            L["VERSION_WINDOW_DETAIL"] or "Detected via %s from %s.\n%s",
            tostring(info.sourceTag or "?"),
            tostring(info.playerName or UNKNOWN),
            tostring(info.detail or "")
        ))
    else
        window.messageText:SetText(L["VERSION_WINDOW_NO_MISMATCH"] or "No newer HMGT version has been detected in your current group.")
        window.detailText:SetText(string.format(
            L["VERSION_WINDOW_CURRENT"] or "Current version: %s | Protocol: %s",
            tostring(HMGT.ADDON_VERSION or "dev"),
            tostring(HMGT.PROTOCOL_VERSION or "?")
        ))
    end

    self:DevTrace("Version", hasMismatch and "window_show_mismatch" or "window_show_current", {
        player = info.playerName,
        source = info.sourceTag,
        detail = info.detail,
    })
    window:Show()
    window:Raise()
end