'use strict';
/* ================= bootstrap ================= */
const Main={
  boot(){
    const info=this.saveInfo();
    if(info){
      $('btnContinue').style.display='';
      $('btnContinue').innerHTML=`▶ Continue — ${U.esc(info.tag)} · S${info.season} · ${info.date}`;
    }
  },
  saveInfo(){
    const ls=Save.store();if(!ls)return null;
    try{
      const g=JSON.parse(ls.getItem(SAVE_KEY));
      if(!g||g.ver!==1)return null;
      const t=g.teams[g.playerTeamId];
      return {tag:t?t.tag:'?',season:g.season,date:U.fmtDate(g.day)};
    }catch(e){return null;}
  },
  continueGame(){
    if(Save.load()){
      UI.show();
      UI.toast('Career loaded — welcome back, GM.','good');
    }else{
      alert('Save data was corrupted. Start a new career.');
      Save.wipe();
    }
  },
  toTitle(){
    Save.save(true);
    $('gameShell').style.display='none';
    $('simOverlay').style.display='none';
    $('titleScreen').style.display='flex';
    $('btnContinue').style.display=Save.exists()?'':'none';
    SimSession.s=null;
  },
  exportSave(){
    if(!G){alert('No career running.');return;}
    const blob=new Blob([Game.serialize()],{type:'application/json'});
    const a=document.createElement('a');
    a.href=URL.createObjectURL(blob);
    a.download=`csm26_${(G.teams[G.playerTeamId]?.tag||'save')}_S${G.season}_d${G.day}.json`;
    a.click();URL.revokeObjectURL(a.href);
    UI.toast('Save exported.','good');
  },
  importSave(){
    const inp=document.createElement('input');
    inp.type='file';inp.accept='.json,application/json';
    inp.onchange=()=>{
      const f=inp.files[0];if(!f)return;
      const rd=new FileReader();
      rd.onload=()=>{
        try{
          Game.staticLoad(String(rd.result));
          Save.save(true);
          UI.closeModal();
          UI.show();
          UI.toast('Save imported ✔','good');
        }catch(e){alert('Invalid save file.');}
      };
      rd.readAsText(f);
    };
    inp.click();
  },
};
window.addEventListener('DOMContentLoaded',()=>Main.boot());
window.addEventListener('visibilitychange',()=>{if(document.visibilityState==='hidden'&&G)Save.save(true);});
/* keyboard: Space/Enter = advance week · Esc = close modal */
window.addEventListener('keydown',e=>{
  if(e.key==='Escape'){const m=$('modalBg');if(m){m.remove();return;}}
  if(!G)return;
  if(e.key!==' '&&e.key!=='Enter')return;
  if($('modalBg')||$('simOverlay').style.display==='flex'||$('titleScreen').style.display==='flex')return;
  if(['INPUT','SELECT','TEXTAREA','BUTTON'].includes(document.activeElement?.tagName))return;
  e.preventDefault();
  UI.advance();
});