let items=[],players=[],loot=[],selected=null;
const fmt=n=>Number(n).toLocaleString();

async function loadDatabase(){
 try{
  const response=await fetch('items.json');
  if(!response.ok) throw new Error('load');
  const raw=await response.json();
  items=raw.map(x=>{
    const name=(x.LocalizedNames&&x.LocalizedNames["EN-US"])||"";
    const u=x.UniqueName||"";
    const ench=(u.match(/@(\d)/)||[])[1]||"0";
    const tier=(u.match(/T(\d)/)||[])[1]||"";
    return {name,label:`${name} (T${tier}.${ench})`};
  }).filter(i=>i.name);
  const s=document.getElementById('dbStatus')||document.getElementById('status');
  if(s)s.textContent='';
  search.disabled=false;
 }catch(e){
  const s=document.getElementById('dbStatus')||document.getElementById('status');
  if(s)s.textContent='Unable to load items.json';
 }
}
loadDatabase();

function renderPlayers(){
 playersDiv=playersEl=document.getElementById("players");
 playersEl.innerHTML="";
 players.forEach((p,i)=>{
   const d=document.createElement("span");
   d.className="player";
   d.innerHTML=`${p} <button>x</button>`;
   d.querySelector("button").onclick=()=>{players.splice(i,1);renderPlayers();};
   playersEl.appendChild(d);

 });
 updateSummary();
}
function addPlayerFn(){
 const n=playerName.value.trim();
 if(!n)return;
 players.push(n);
 playerName.value="";
 renderPlayers();
}
addPlayer.onclick=addPlayerFn;
playerName.addEventListener("keydown",e=>{if(e.key==="Enter"){e.preventDefault();addPlayerFn();}});

search.oninput=()=>{
 const q=search.value.toLowerCase();
 results.innerHTML="";
 if(q.length<2)return;
 const groups={};
 items.filter(i=>i.name.toLowerCase().includes(q)).slice(0,80).forEach(i=>(groups[i.name]??=[]).push(i));
 Object.keys(groups).sort().forEach(name=>{
  const g=document.createElement("div");g.className="group";
  g.innerHTML=`<div class="title">${name}</div>`;
  groups[name].forEach(it=>{
    const c=document.createElement("div");c.className="child";c.textContent=it.label;
    c.onclick=()=>{selected=it;selectedSpan.textContent=it.label;search.value=it.name;results.innerHTML="";updatePriceInfo();qty.focus();};
    g.appendChild(c);
  });
  results.appendChild(g);

 });
 updateSummary();
};

const priceHistory=JSON.parse(localStorage.getItem("priceHistory")||"{}");
function fmtAge(ts){if(!ts)return"Never";let m=Math.floor((Date.now()-ts)/60000);if(m<60)return m+"m ago";let h=Math.floor(m/60);if(h<24)return h+"h ago";let d=Math.floor(h/24);h%=24;return d+"d "+h+"h ago";}
function updatePriceInfo(){if(!selected){lastUpdated.textContent="Never";return;}const p=priceHistory[selected.label];if(p){priceEach.value=p.price;updateTotal();lastUpdated.textContent=fmtAge(p.updated);}else lastUpdated.textContent="Never";}

const selectedSpan=document.getElementById("selected");
function updateTotal(){totalValue.textContent=fmt((+qty.value||0)*(+priceEach.value||0));}
qty.oninput=updateTotal;priceEach.oninput=updateTotal;updateTotal();

addLoot.onclick=()=>{
 if(!selected)return alert("Select an item.");
 const q=+qty.value||1,e=+priceEach.value||0,total=q*e;
 const existing=loot.find(x=>x.item===selected.label&&x.each===e);
 if(existing){existing.qty+=q;existing.total=existing.qty*existing.each;}
 else loot.push({item:selected.label,qty:q,each:e,total,keep:keepTogether.checked});
 priceHistory[selected.label]={price:e,updated:Date.now()};localStorage.setItem("priceHistory",JSON.stringify(priceHistory));renderLoot();
 selected=null;selectedSpan.textContent="None";search.value="";qty.value=1;priceEach.value=0;updateTotal();
};

function updateSummary(){let stacks=loot.length,items=0,val=0;loot.forEach(l=>{items+=l.qty;val+=l.total;});sumStacks.textContent=stacks;sumItems.textContent=items;sumValue.textContent=fmt(val);targetShare.textContent=players.length?fmt(Math.round(val/players.length)):0;}

function renderLoot(){
 const tb=document.querySelector("#loot tbody");tb.innerHTML="";
 loot.forEach((l,i)=>{
  const r=tb.insertRow();
  r.insertCell().textContent=l.item;
  r.insertCell().textContent=l.qty;
  r.insertCell().textContent=fmt(l.each);
  r.insertCell().textContent=fmt(l.total);
  r.insertCell().textContent=l.keep?'✓':'';
  const b=document.createElement("button");b.textContent="❌";b.onclick=()=>{loot.splice(i,1);renderLoot();};
  r.insertCell().appendChild(b);

 });
 updateSummary();
}

distribute.onclick=()=>{
 if(players.length===0)return alert("Add players first.");
 let best=null,bestSpread=Infinity;
 for(let t=0;t<300;t++){
   let expanded=[];loot.forEach(l=>{if(l.keep){expanded.push({...l});}else{for(let i=0;i<l.qty;i++)expanded.push({item:l.item,qty:1,each:l.each,total:l.each});}});let work=expanded.sort(()=>Math.random()-0.5).sort((a,b)=>b.total-a.total);
   let p=players.map(n=>({name:n,total:0,items:[]}));
   work.forEach(it=>{p.sort((a,b)=>a.total-b.total);p[0].items.push(it);p[0].total+=it.total;});
   let vals=p.map(x=>x.total);let spread=Math.max(...vals)-Math.min(...vals);
   if(spread<bestSpread){bestSpread=spread;best=JSON.parse(JSON.stringify(p));}
 }
 distribution.innerHTML="";
 best.forEach(pl=>{
const merged={};pl.items.forEach(i=>{const k=i.item+'|'+i.each;if(!merged[k])merged[k]={...i};else{merged[k].qty+=i.qty;merged[k].total+=i.total;}});
const d=document.createElement("div");
d.innerHTML=`<h3>${pl.name} — ${fmt(pl.total)} silver</h3><ul>${Object.values(merged).map(i=>`<li>${i.item} ×${i.qty}</li>`).join("")}</ul>`;
distribution.appendChild(d);

 });
 updateSummary();
};