From 5fd3ff5817a40f9d1b9f3b230cfa4c3c028a5de3 Mon Sep 17 00:00:00 2001
From: shagu <ericmauser@googlemail.com>
Date: Sun, 1 Jun 2025 10:10:22 +0200
Subject: [PATCH] nameplates: add support for channel spell cast bars

---
 modules/nameplates.lua | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/modules/nameplates.lua b/modules/nameplates.lua
index 85665b49..59785b17 100644
--- a/modules/nameplates.lua
+++ b/modules/nameplates.lua
@@ -1018,22 +1018,34 @@ pfUI:RegisterModule("nameplates", "vanilla:tbc", function ()
 
     -- castbar update
     if C.nameplates["showcastbar"] == "1" and ( C.nameplates["targetcastbar"] == "0" or target ) then
-      local cast, nameSubtext, text, texture, startTime, endTime, isTradeSkill = UnitCastingInfo(target and "target" or name)
+      local channel, cast, nameSubtext, text, texture, startTime, endTime, isTradeSkill
+
+      -- detect cast or channel bars
+      cast, nameSubtext, text, texture, startTime, endTime, isTradeSkill = UnitCastingInfo(target and "target" or name)
+      if not cast then channel, nameSubtext, text, texture, startTime, endTime, isTradeSkill = UnitChannelInfo(target and "target" or name) end
 
       -- read enemy casts from SuperWoW if enabled
       if superwow_active then
         cast, nameSubtext, text, texture, startTime, endTime, isTradeSkill = UnitCastingInfo(nameplate.parent:GetName(1))
+        if not cast then channel, nameSubtext, text, texture, startTime, endTime, isTradeSkill = UnitChannelInfo(nameplate.parent:GetName(1)) end
       end
 
-      if not cast then
+      if not cast and not channel then
         nameplate.castbar:Hide()
-      elseif cast then
+      elseif cast or channel then
+        local effect = cast or channel
         local duration = endTime - startTime
+        local max = duration / 1000
+        local cur = GetTime() - startTime / 1000
+
+        -- invert castbar values while channeling
+        if channel then cur = max + startTime/1000 - GetTime() end
+
         nameplate.castbar:SetMinMaxValues(0,  duration/1000)
-        nameplate.castbar:SetValue(GetTime() - startTime/1000)
-        nameplate.castbar.text:SetText(round(startTime/1000 + duration/1000 - GetTime(),1))
+        nameplate.castbar:SetValue(cur)
+        nameplate.castbar.text:SetText(round(cur,1))
         if C.nameplates.spellname == "1" then
-          nameplate.castbar.spell:SetText(cast)
+          nameplate.castbar.spell:SetText(effect)
         else
           nameplate.castbar.spell:SetText("")
         end