From 6b35bcbce9aa3e6715293b25acebd6158040c945 Mon Sep 17 00:00:00 2001
From: praxis <889+praxis@noreply.octowow.st>
Date: Sun, 13 Sep 2026 09:50:36 +0000
Subject: [PATCH] Add libs/libhealth.lua

---
 libs/libhealth.lua | 108 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 libs/libhealth.lua

diff --git a/libs/libhealth.lua b/libs/libhealth.lua
new file mode 100644
index 0000000..4060557
--- /dev/null
+++ b/libs/libhealth.lua
@@ -0,0 +1,108 @@
+-- load pfUI environment
+setfenv(1, pfUI:GetEnvironment())
+
+if pfUI.libhealth then return end
+
+local mobdb = {}
+local target, dmg, perc, diff = nil, 0, 0, 0, 0
+local UnitHealth, UnitHealthMax
+local libhealth = CreateFrame("Frame")
+libhealth.enabled = true
+libhealth.reqhit = 4
+libhealth.reqdmg = 5
+libhealth:RegisterEvent("UNIT_HEALTH")
+libhealth:RegisterEvent("UNIT_COMBAT")
+libhealth:RegisterEvent("PLAYER_TARGET_CHANGED")
+libhealth:RegisterEvent("PLAYER_ENTERING_WORLD")
+libhealth:SetScript("OnEvent", function()
+  if event == "PLAYER_ENTERING_WORLD" then
+    -- create initial health cache tables
+    pfUI_cache["libhealth"] = pfUI_cache["libhealth"] or {}
+    mobdb = pfUI_cache["libhealth"]
+
+    -- load enable state and set functions
+    libhealth.enabled = pfUI_config["global"]["libhealth"] == "1" and true or nil
+    libhealth.reqhit = (tonumber(pfUI_config["global"]["libhealth_hit"]) or 4)
+    libhealth.reqdmg = (tonumber(pfUI_config["global"]["libhealth_dmg"]) or 0.5) * 100
+  end
+
+  -- return as we're not supposed to be here
+  if not libhealth.enabled then this:UnregisterAllEvents() return end
+
+  -- try to estimate mob health based on combat and health events
+  if event == "PLAYER_TARGET_CHANGED" then
+    dmg, perc = 0, _G.UnitHealth("target")
+    if UnitName("target") and UnitLevel("target") and _G.UnitHealthMax("target") == 100 then
+      target = string.format("%s:%d",UnitName("target"), UnitLevel("target"))
+    else
+      target = nil
+    end
+  elseif target and event == "UNIT_COMBAT" and arg1 == "target" then
+    if arg2 and arg2 == "HEAL" then return end
+    dmg = dmg + arg4
+  elseif target and event == "UNIT_HEALTH" and arg1 == "target" then
+    diff = perc-_G.UnitHealth("target")
+    if dmg > 0 and diff > 0 then
+      mobdb[target] = mobdb[target] or {}
+      if not mobdb[target][2] or diff > mobdb[target][2] then
+        mobdb[target][1] = ceil(dmg / diff * 100)
+        mobdb[target][2] = diff
+        mobdb[target][3] = mobdb[target][3] and mobdb[target][3] + 1 or 1
+      end
+    end
+  end
+end)
+
+-- core function to query the generated database
+local unit, level, cur, max, dbstring
+local function GetUnitHealth(self, unitstr)
+  unit = UnitName(unitstr)
+  level = UnitLevel(unitstr)
+  cur = _G.UnitHealth(unitstr)
+  max = _G.UnitHealthMax(unitstr)
+
+  -- return raw values if another addon is replacing global API calls
+  if cur > 100 or max > 100 or max < 100 then
+    return cur, max, true
+  end
+
+  -- return raw values if no unit data could be found (unlikely but happened...)
+  if not unit or not level then
+    return cur, max
+  end
+
+  -- query the database for known values
+  dbstring = string.format("%s:%s", unit, level)
+  if mobdb[dbstring] and mobdb[dbstring][1] and mobdb[dbstring][2] > libhealth.reqdmg and (not mobdb[dbstring][3] or mobdb[dbstring][3] > libhealth.reqhit) then
+    return ceil(mobdb[dbstring][1]/100*cur), mobdb[dbstring][1], true
+  end
+
+  -- return raw values as fallback
+  return cur, max
+end
+
+local function GetUnitHealthByName(self, unit, level, cur, max)
+  -- return raw values if another addon is replacing global API calls
+  if cur > 100 or max > 100 or max < 100 then
+    return cur, max, true
+  end
+
+  -- return raw values if no unit data could be found (unlikely but happened...)
+  if not unit or not level then
+    return cur, max
+  end
+
+  -- query the database for known values
+  dbstring = string.format("%s:%s", unit, level)
+  if mobdb[dbstring] and mobdb[dbstring][1] and mobdb[dbstring][2] > libhealth.reqdmg and (not mobdb[dbstring][3] or mobdb[dbstring][3] > libhealth.reqhit) then
+    return ceil(mobdb[dbstring][1]/100*cur), mobdb[dbstring][1], true
+  end
+
+  -- return raw values as fallback
+  return cur, max
+end
+
+-- add api calls to global tree
+pfUI.libhealth = libhealth
+pfUI.libhealth.GetUnitHealth = GetUnitHealth
+pfUI.libhealth.GetUnitHealthByName = GetUnitHealthByName