/* RM Circle — public direct-join engine (dormant fallback; served only when
   config.dappFallbackPublic is on). Talks only to window.ethereum (CSP-safe).
   Auto-assigns the current rotation sponsor, registers the member's own wallet,
   then sends them to their live position page /my/<newId>. Zero custody. */
(function(){
  'use strict';
  var CONTRACT='0x33bdaeefd6d17d80ae53816c916dfb26c4fb2daf';
  var POLYGON_HEX='0x89';
  var SEL_REGISTER='0x30de37e4';   // register(uint48 sponsorId, uint8 tier) payable
  var SEL_GETMEMBER='0x2ada2596';  // getMember(address)
  var SEL_GETCOSTS='0x735f87b9';   // getAllCosts()
  var T_REGISTERED='0xe4a74887d749eb048f14bfef37b204477f3a5ff67055908b7c8cc62c202aef17';

  var $=function(id){return document.getElementById(id);};
  var eth=null; // resolved via the wallet picker on connect
  var account=null, costs=null, sponsorId=null;

  function log(msg,kind){var b=$('log');if(!b)return;var d=document.createElement('div');d.className='dj-log '+(kind||'');d.innerHTML=msg;b.appendChild(d);b.scrollTop=b.scrollHeight;}
  function word(n){return BigInt(n).toString(16).padStart(64,'0');}
  function addrWord(a){return a.toLowerCase().replace(/^0x/,'').padStart(64,'0');}
  function polStr(wei){return (Number(wei)/1e18).toFixed(2);}
  function hexWei(wei){return '0x'+BigInt(wei).toString(16);}
  async function req(method,params){ if(!eth) throw new Error('No wallet found'); return await eth.request({method:method,params:params||[]}); }
  async function ethCall(data){ return await req('eth_call',[{to:CONTRACT,data:data},'latest']); }

  async function loadCosts(){
    var r=await ethCall(SEL_GETCOSTS); var d=r.slice(2), w=[];
    for(var i=0;i<d.length;i+=64) w.push(BigInt('0x'+d.slice(i,i+64)));
    costs={ regPrem:w.slice(8,16) }; return costs;
  }
  function regValue(){ return costs.regPrem[0]*105n/100n; } // premium base * 1.05 (verified)

  async function readPosition(addr){
    try{ var r=await ethCall(SEL_GETMEMBER+addrWord(addr)); if(!r||r==='0x') return null;
      var d=r.slice(2), level=parseInt(d.slice(5*64,6*64),16); return level?{level:level}:null; }catch(e){ return null; }
  }
  async function ensurePolygon(){
    var cid=await req('eth_chainId'); if(cid===POLYGON_HEX) return true;
    try{ await req('wallet_switchEthereumChain',[{chainId:POLYGON_HEX}]); return true; }
    catch(e){ if(e&&e.code===4902){ await req('wallet_addEthereumChain',[{chainId:POLYGON_HEX,chainName:'Polygon Mainnet',nativeCurrency:{name:'POL',symbol:'POL',decimals:18},rpcUrls:['https://polygon-rpc.com'],blockExplorerUrls:['https://polygonscan.com']}]); return true; } throw e; }
  }
  async function waitReceipt(tx){ for(var i=0;i<60;i++){ try{ var r=await req('eth_getTransactionReceipt',[tx]); if(r) return r; }catch(e){} await new Promise(function(s){setTimeout(s,3000);}); } return null; }
  function receiptEventId(rc){ var id=null; (rc.logs||[]).forEach(function(l){ if(l.address&&l.address.toLowerCase()===CONTRACT&&l.topics&&l.topics[0]===T_REGISTERED) id=parseInt(l.topics[1],16); }); return id; }

  async function loadSponsor(){
    try{
      // personal invite: ?ref=<id> -> place in that member's leg via the site's moving-link joinTarget
      var ref=new URLSearchParams(location.search).get('ref');
      if(ref&&/^\d{1,15}$/.test(ref)){
        try{ var rm=await (await fetch('/api/public/member?id='+ref)).json(); var t=rm&&rm.joinTarget;
          if(t&&t.id){ sponsorId=String(t.id); $('sponsorLine').innerHTML='You’ll join under <strong>#'+t.id+'</strong>'+(String(t.id)!==String(ref)?' — the next open spot in #'+ref+'’s team':'')+'.'; return; }
        }catch(e){}
      }
      var j=await (await fetch('/api/public/current-sponsor')).json(); var sp=j&&j.sponsor;
      if(sp&&sp.id){ sponsorId=String(sp.id); $('sponsorLine').innerHTML='You’ll join the team under <strong>#'+sp.id+(sp.name?' ('+sp.name+')':'')+'</strong> — the current team placement.'; }
      else $('sponsorLine').textContent='Loading the current team placement…';
    }catch(e){ $('sponsorLine').textContent='Could not load the current sponsor — please refresh.'; }
  }

  async function refreshBalance(){ try{ var b=await req('eth_getBalance',[account,'latest']); $('bal').textContent=polStr(BigInt(b))+' POL'; }catch(e){} }

  async function connect(){
    try{
      eth=await window.RMCWallet.pick();
      if(!eth){ log('No wallet selected or detected. Install/unlock MetaMask, Trust, or SafePal and try again.','err'); return; }
      attachWalletEvents();
      log('Requesting wallet connection…');
      var accs=await req('eth_requestAccounts'); account=accs[0];
      await ensurePolygon(); await loadCosts();
      $('wallet').textContent=account.slice(0,6)+'…'+account.slice(-4);
      $('connected').style.display='block'; $('connectBtn').style.display='none';
      await refreshBalance();
      $('joinCost').textContent=polStr(regValue())+' POL';
      var pos=await readPosition(account);
      if(pos){ $('already').style.display='block'; $('already').innerHTML='This wallet already holds position — <a href="/my">open your dashboard</a>. To create a <em>new</em> position, connect a different wallet.'; $('joinBtn').disabled=true; }
      $('joinBox').style.display='block';
      log('Connected. Review the amount, then Join.','ok');
    }catch(e){ log('Connect failed: '+(e.message||e),'err'); }
  }

  async function doJoin(){
    try{
      if(!sponsorId){ log('Still loading the current sponsor — one moment.','err'); await loadSponsor(); if(!sponsorId) return; }
      await ensurePolygon();
      var val=regValue();
      var data=SEL_REGISTER+word(sponsorId)+word(2);
      log('Joining under #'+sponsorId+', Premium — paying '+polStr(val)+' POL. Confirm in your wallet…');
      $('joinBtn').disabled=true;
      var tx=await req('eth_sendTransaction',[{from:account,to:CONTRACT,value:hexWei(val),data:data}]);
      log('Submitted — waiting for confirmation… <a href="https://polygonscan.com/tx/'+tx+'" target="_blank" rel="noopener">view tx</a>','ok');
      var rc=await waitReceipt(tx);
      if(!rc){ log('Still pending. Once it mines, open your dashboard at /my.',''); $('joinBtn').disabled=false; return; }
      if(rc.status==='0x0'){ log('⚠️ The transaction reverted — no position created, and your POL was returned (minus gas). Please try again.','err'); $('joinBtn').disabled=false; return; }
      var newId=receiptEventId(rc);
      if(newId){
        reportJoin(newId);
        $('result').style.display='block';
        $('resultId').textContent='#'+newId;
        $('resultSub').innerHTML='Welcome to the team! Taking you to your position page…';
        $('resultLink').href='/my/'+newId; $('resultLink').style.display='inline-flex';
        log('🎉 Confirmed — your position is <strong>#'+newId+'</strong>. Redirecting to your dashboard…','ok');
        try{ el_scroll('result'); }catch(e){}
        setTimeout(function(){ location.href='/my/'+newId; }, 4500);
      } else {
        log('Confirmed on-chain. Open your dashboard at <a href="/my">/my</a> and enter your new ID (also shown on Polygonscan).','ok');
        $('joinBtn').disabled=false;
      }
    }catch(e){ log('Join failed / rejected: '+(e.message||e),'err'); $('joinBtn').disabled=false; }
  }
  function el_scroll(id){ var e=$(id); if(e&&e.scrollIntoView) e.scrollIntoView({behavior:'smooth',block:'center'}); }

  // Auto-confirm the join server-side: records the submission (source + clickid
  // attribution), fires the purchase event + BeMob postback, enqueues rotation
  // joins, and alerts the team — same pipeline as the manual submit-ID form.
  function reportJoin(newId){
    try{
      var nameEl=$('memberName');
      var name=(nameEl&&nameEl.value?nameEl.value.trim().slice(0,60):'')||('Self-enrolled #'+newId);
      var src=(window.ctbGetSource?window.ctbGetSource():'(direct)');
      var cid=(window.ctbGetClickId?window.ctbGetClickId():'');
      fetch('/api/public/submit-id',{method:'POST',headers:{'Content-Type':'application/json'},
        body:JSON.stringify({newId:String(newId),memberName:name,sponsorId:String(sponsorId||'?'),source:src,clickid:cid})
      }).catch(function(){});
    }catch(e){}
  }

  function attachWalletEvents(){
    if(!eth||!eth.on||eth.__rmcBound) return; eth.__rmcBound=true;
    eth.on('accountsChanged',function(accs){ account=(accs&&accs[0])||null; if(!account){ $('connected').style.display='none'; $('connectBtn').style.display=''; } else { $('wallet').textContent=account.slice(0,6)+'…'+account.slice(-4); refreshBalance(); } });
    eth.on('chainChanged',function(){ if(account) refreshBalance(); });
  }
  document.addEventListener('DOMContentLoaded',function(){
    loadSponsor();
    $('connectBtn').addEventListener('click',connect);
    $('joinBtn').addEventListener('click',doJoin);
  });
})();