'use strict';
/* ================= util ================= */
const U = {
  rnd:(a,b)=>a+Math.random()*(b-a),
  ri:(a,b)=>Math.floor(a+Math.random()*(b-a+1)),
  pick:a=>a[Math.floor(Math.random()*a.length)],
  pickW:(items,wfn)=>{ // weighted pick
    let tot=0; const ws=items.map(it=>{const w=Math.max(0.0001,wfn(it)); tot+=w; return w;});
    let r=Math.random()*tot;
    for(let i=0;i<items.length;i++){ r-=ws[i]; if(r<=0) return items[i]; }
    return items[items.length-1];
  },
  chance:p=>Math.random()<p,
  gauss:(m=0,s=1)=>{let u=0,v=0;while(!u)u=Math.random();while(!v)v=Math.random();return m+s*Math.sqrt(-2*Math.log(u))*Math.cos(2*Math.PI*v);},
  clamp:(v,a,b)=>Math.max(a,Math.min(b,v)),
  lerp:(a,b,t)=>a+(b-a)*t,
  sum:arr=>arr.reduce((s,x)=>s+x,0),
  avg:arr=>arr.length?U.sum(arr)/arr.length:0,
  shuffle:a=>{for(let i=a.length-1;i>0;i--){const j=Math.floor(Math.random()*(i+1));[a[i],a[j]]=[a[j],a[i]];}return a;},
  esc:s=>String(s??'').replace(/[&<>"]/g,c=>({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;'}[c])),
  uid:()=> 'x'+Math.random().toString(36).slice(2,9)+Date.now().toString(36).slice(-4),

  fmtM(n){
    if(n===Infinity||n===-Infinity) return '∞';
    const neg=n<0; n=Math.abs(Math.round(n));
    let s;
    if(n>=1e9) s=(n/1e9).toFixed(2)+'B';
    else if(n>=1e6) s=(n/1e6).toFixed(n>=1e7?1:2)+'M';
    else if(n>=1e3) s=(n/1e3).toFixed(0)+'K';
    else s=String(n);
    return (neg?'-$':'$')+s;
  },
  fmtNum(n){return Math.round(n).toLocaleString('en-US');},

  /* day 0 = Mon 5 Jan 2026 */
  dateFromDay(d){const dt=new Date(Date.UTC(2026,0,5)); dt.setUTCDate(dt.getUTCDate()+d); return dt;},
  fmtDate(d){const dt=U.dateFromDay(d);
    return dt.toLocaleDateString('en-GB',{day:'numeric',month:'short',year:'numeric',timeZone:'UTC'});},
  fmtDateShort(d){const dt=U.dateFromDay(d);return dt.toLocaleDateString('en-GB',{day:'numeric',month:'short',timeZone:'UTC'});},
  dow(d){return U.dateFromDay(d).getUTCDay();}, // 0 sun .. 6 sat
  weekOfYear(d){return Math.floor((d+4)/7);},

  logistic(x){return 1/(1+Math.exp(-x));},
};

/* role weights for overall rating (attrs: aim,pos,clutch,util,iq,move,comm) */
const ROLE_W={
  IGL:   {iq:.32,comm:.22,util:.14,pos:.12,aim:.08,clutch:.04,move:.08},
  AWP:   {aim:.38,pos:.18,iq:.13,clutch:.10,move:.10,comm:.07,util:.04},
  Entry: {aim:.33,move:.20,pos:.12,clutch:.09,iq:.10,util:.08,comm:.08},
  Rifler:{aim:.26,iq:.16,pos:.16,move:.12,clutch:.10,util:.10,comm:.10},
  Support:{util:.28,iq:.20,comm:.17,pos:.15,aim:.10,move:.06,clutch:.04},
  Lurker:{pos:.26,iq:.22,aim:.16,clutch:.14,move:.10,util:.06,comm:.06},
};
const ROLES=Object.keys(ROLE_W);
function playerOverall(p){
  const w=ROLE_W[p.role]||ROLE_W.Rifler; let s=0;
  for(const k in w) s+=p.attrs[k]*w[k];
  return s;
}

/* market value & wage model. attrs 40..99 scale */
function playerValue(p,G){
  const ovr=playerOverall(p), potGap=p.potential-ovr;
  const ageF = p.age<=19?1.45 : p.age<=22?1.35 : p.age<=25?1.2 : p.age<=28?1.0 : p.age<=31?0.72 : 0.42;
  let v = Math.pow(Math.max(ovr-40,1),2.75) * 14 * ageF;
  v *= (1 + Math.max(potGap,0)*0.022);
  v *= (0.75 + p.form*0.05);           // form 0..10
  v *= (0.85 + p.morale/100*0.3);
  const yrsLeft = Math.max(0,(p.contractUntil-G.day)/364);
  if(yrsLeft<0.5 && G.players[p.teamId]!==undefined) v*=0.65; // expiring contract discount
  if(p.injuryDays>7) v*=0.85;
  return Math.round(v/1000)*1000;
}
function wageDemand(p,G){
  const ovr=playerOverall(p);
  let base = Math.pow(Math.max(ovr-40,1),2.6)*0.75;      // monthly usd
  base *= (0.8 + p.form*0.045);
  base *= (1 + (p.potential-ovr)*0.008);
  const yrsLeft=Math.max(0,(p.contractUntil-G.day)/364);
  if(yrsLeft<0.5) base*=1.25;
  base *= G.diff.wageMul;
  return Math.round(base/500)*500;
}

const NATIONS={ // flag emoji
  UA:'🇺🇦',RU:'🇷🇺',DK:'🇩🇰',LV:'🇱🇻',IL:'🇮🇱',DE:'🇩🇪',FR:'🇫🇷',GB:'🇬🇧',PL:'🇵🇱',CZ:'🇨🇿',
  SE:'🇸🇪',NO:'🇳🇴',FI:'🇫🇮',EE:'🇪🇪',LT:'🇱🇹',NL:'🇳🇱',BG:'🇧🇬',RO:'🇷🇴',RS:'🇷🇸',
  US:'🇺🇸',CA:'🇨🇦',BR:'🇧🇷',AR:'🇦🇷',UY:'🇺🇾',MX:'🇲🇽',
  TR:'🇹🇷',KZ:'🇰🇿',MN:'🇲🇳',CN:'🇨🇳',KR:'🇰🇷',JP:'🇯🇵',
  AU:'🇦🇺',NZ:'🇳🇿',ES:'🇪🇸',PT:'🇵🇹',IT:'🇮🇹',BA:'🇧🇦',MK:'🇲🇰',GR:'🇬🇷',SA:'🇸🇦',MA:'🇲🇦',ID:'🇮🇩'
};
const FLAG=n=>NATIONS[n]||'🏳️';

function faceFor(m){ // morale emoji
  if(m>=80)return '😄'; if(m>=60)return '🙂'; if(m>=40)return '😐'; if(m>=20)return '🙁'; return '😡';
}
function formStars(f){ // f 0..10 → stars display
  const s=Math.round(f/2); return '★'.repeat(s)+'☆'.repeat(5-s);
}
function ovrClass(o){return o>=90?'s90':o>=80?'s80':'';}