1.11.2 lifegiving armor

So I'm new to the community, and I've been modding with 1.11.2 for a bit. I have looked on the forums for answers but most of the pages on it were outdated.

Here is my question: How do I detect damage dealt be a player wearing armor and effect the player with life boost based on the damage value?

Here is my current code:

import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.EntityEquipmentSlot;
import net.minecraft.item.ItemArmor;
import net.minecraft.item.ItemStack;
import net.minecraft.potion.Potion;
import net.minecraft.potion.PotionEffect;
import net.minecraft.util.DamageSource;
import net.minecraft.world.World;
import net.minecraftforge.event.entity.living.LivingHurtEvent;
import net.minecraftforge.event.entity.player.AttackEntityEvent;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;

public class ItemAncientArmor extends ItemArmor
{
    public final String name;
    
     public ItemAncientArmor(ArmorMaterial material, int renderIndex, EntityEquipmentSlot armorType, String name) {
            super(material, renderIndex, armorType);
            this.name = name;
            this.setUnlocalizedName(BaseMod.MODID + "_" + name);
            this.setCreativeTab(CreativeTabs.COMBAT);
        }
    
     public String getArmorTexture(ItemStack stack, Entity entity, EntityEquipmentSlot slot,
                String type) {
     
            if(slot == EntityEquipmentSlot.LEGS){
                return "examplemod:textures/models/armor/ancientarmor2.png";
            }
            return "examplemod:textures/models/armor/ancientarmor1.png";
        }
     public void onArmorTick(World world, EntityPlayer player, ItemStack itemStack) 
        {
             if (itemStack.getItem() == ItemMod.ancientHelmet || itemStack.getItem() == ItemMod.ancientChestplate ||
                    itemStack.getItem() == ItemMod.ancientLeggings || itemStack.getItem() == ItemMod.ancientBoots)
             {
             if (player.isAirBorne)
             {
                 player.addPotionEffect(new PotionEffect(Potion.getPotionFromResourceLocation("resistance"), 1, 5));
                 player.addPotionEffect(new PotionEffect(Potion.getPotionFromResourceLocation("strength"), 1, 5));
             }
             /*
             public LivingHurtEvent(EntityLivingBase entity, DamageSource source, float amount)
            {
                super(entity);
                this.source = source;
                this.amount = amount;
                // TODO make player get health boost based on damage output
                //LivingHurtEvent float damage? player.addPotionEffect... boost"), 5, damage));?
            }
            */
             /* TODO make player get health boost based on damage output
             new AttackEntityEvent(player, player)
            {
                super(player);
                this.target = target;
            }
            */