Rotation

--------------------------------------------------
-- SUNDER STACK DETECTION
--------------------------------------------------
function get_sunder_stacks()
   for i = 1, 40 do
      local texture, stacks = UnitDebuff("target", i)
      if not texture then break end

      -- Expose Armor (treated as full sunder)
      if string.find(texture, "Ability_Warrior_Riposte") then
         return 5
      end

      -- Sunder Armor
      if string.find(texture, "Ability_Warrior_Sunder") then
         return stacks or 0
      end
   end
   return 0
end

--------------------------------------------------
-- 1. INITIAL SUNDER
--------------------------------------------------
function initial_sunder()
   if get_sunder_stacks() == 0 then
      CastSpellByName("Sunder Armor")
      return true
   end
   return false
end

--------------------------------------------------
-- 2. SUNDER ARMOR
--------------------------------------------------
function sunder_armor()
   if get_sunder_stacks() < 5 then
      CastSpellByName("Sunder Armor")
      return true
   end
   return false
end

--------------------------------------------------
-- 3. BATTLE SHOUT UPKEEP
--------------------------------------------------
function battle_shout_up()
   for i = 1, 40 do
      local buff = UnitBuff("player", i)
      if not buff then break end
      if string.find(buff, "Ability_Warrior_BattleShout") then
         return true
      end
   end
   return false
end

function battle_shout()
   if not battle_shout_up() then
      CastSpellByName("Battle Shout")
      return true
   end
   return false
end

--------------------------------------------------
-- 4. EXECUTE LOGIC
--------------------------------------------------
function execute()
   local maxhp = UnitHealthMax("target")
   if maxhp == 0 then return false end

   local hp = UnitHealth("target")
   if (hp / maxhp) * 100 < 20 then
      CastSpellByName("Execute")
      return true
   end
   return false
end

--------------------------------------------------
-- 5. SHIELD BASH LOGIC
--------------------------------------------------
function shield_slam()
   CastSpellByName("Shield Slam")
end

--------------------------------------------------
-- 6. REVENGE LOGIC
--------------------------------------------------
function revenge()
   CastSpellByName("Revenge")
end

--------------------------------------------------
-- 7. HEROIC STRIKE RAGE DUMP
--------------------------------------------------
function heroic_strike()
   if UnitMana("player") >= 35 then
      CastSpellByName("Heroic Strike")
      return true
   end
   return false
end

--------------------------------------------------
-- MAIN ROTATION
--------------------------------------------------
function rotation()
   if not UnitExists("target") then return end

   if initial_sunder() then return end
   if battle_shout() then return end
   if execute() then return end
   shield_slam()
   revenge()
   if sunder_armor() then return end
   if heroic_strike() then return end
end