NanamiPlates_Target = {}

local NP = NanamiPlates
local Settings = NP.Settings

local function ApplyArrowTint(ind)
    if not ind or not ind.tex then return end
    local tint = Settings.targetArrowTint or 0
    if tint <= 0 then
        ind.tex:SetVertexColor(1, 1, 1, 1)
    else
        local acR, acG, acB = NP.GetThemeColor("accent", 1.0, 0.5, 0.8, 1)
        local r = 1 + (acR - 1) * tint
        local g = 1 + (acG - 1) * tint
        local b = 1 + (acB - 1) * tint
        ind.tex:SetVertexColor(r, g, b, 1)
    end
end

function NanamiPlates_Target.UpdateTarget(nameplate, isTarget)
    if not nameplate then return end

    local indL = nameplate.targetArrowL
    local indR = nameplate.targetArrowR
    if not indL or not indR then return end

    if isTarget and Settings.showTargetGlow then
        local acR, acG, acB = NP.GetThemeColor("accent", 1.0, 0.5, 0.8, 0.9)
        ApplyArrowTint(indL)
        ApplyArrowTint(indR)
        indL:Show()
        indR:Show()
        -- Highlight healthBG border for target
        if nameplate.healthBG then
            nameplate.healthBG:SetBackdropBorderColor(acR, acG, acB, 1)
        end
        -- Show additive glow overlay (color/alpha synced in UpdateNamePlate)
        if nameplate.targetGlow then
            if not nameplate.targetGlow:IsShown() then
                local barR, barG, barB = nameplate.health:GetStatusBarColor()
                local lum = 0.299 * barR + 0.587 * barG + 0.114 * barB
                local glowAlpha = 0.75
                if lum > 0.5 then
                    glowAlpha = 0.75 * math.max(0.15, (1.0 - lum) * 2)
                end
                nameplate.targetGlow:SetStatusBarColor(barR, barG, barB, 1)
                nameplate.targetGlow:SetAlpha(glowAlpha)
            end
            nameplate.targetGlow:Show()
        end
    else
        indL:Hide()
        indR:Hide()
        -- Restore default border for non-target
        if nameplate.healthBG then
            local brR, brG, brB, brA = NP.GetThemeColor("panelBorder", 0.55, 0.30, 0.42, 0.9)
            nameplate.healthBG:SetBackdropBorderColor(brR, brG, brB, brA)
        end
        if nameplate.targetGlow then
            nameplate.targetGlow:Hide()
        end
    end
end

NanamiPlates.Target = NanamiPlates_Target