'use strict';
class FamilyMap {
  constructor(viewport,onSelect) {
    this.viewport=viewport;this.onSelect=onSelect;this.scale=1;this.autoFit=true;this.key='';this.data=null;
    viewport.addEventListener('click',e=>{const b=e.target.closest('[data-map-person]');if(b)this.onSelect(b.dataset.mapPerson);});
    viewport.addEventListener('pointerdown',e=>{
      if(e.pointerType!=='mouse'||e.button!==0||e.target.closest('button'))return;
      this.drag={x:e.clientX,y:e.clientY,left:viewport.scrollLeft,top:viewport.scrollTop};viewport.setPointerCapture(e.pointerId);viewport.classList.add('panning');e.preventDefault();
    });
    viewport.addEventListener('pointermove',e=>{if(!this.drag)return;viewport.scrollLeft=this.drag.left+this.drag.x-e.clientX;viewport.scrollTop=this.drag.top+this.drag.y-e.clientY;});
    const release=()=>{this.drag=null;viewport.classList.remove('panning');};
    viewport.addEventListener('pointerup',release);viewport.addEventListener('pointercancel',release);viewport.addEventListener('lostpointercapture',release);
    this.resize=new ResizeObserver(()=>{if(this.autoFit)this.fit();else this.applyScale();});this.resize.observe(viewport);
  }
  reset(){this.key='';this.data=null;this.viewport.replaceChildren();this.autoFit=true;this.drag=null;$('#family-zoom-value').textContent='100%';}
  render(data) {
    this.data=data;
    const key=JSON.stringify([data.people,data.links,data.showArchived]);
    if(key!==this.key) {
      this.key=key;this.graph=ZhaoFamilyGraph.layout(data.people,data.links,data);
      const g=this.graph;
      this.viewport.innerHTML=g.nodes.length?`<div class="family-map-space"><div class="family-map-surface"><svg class="family-map-lines" width="${g.width}" height="${g.height}" aria-hidden="true"><defs><marker id="family-arrow" viewBox="0 0 8 8" refX="7" refY="4" markerWidth="6" markerHeight="6" orient="auto-start-reverse"><path d="M0 0 L8 4 L0 8 Z" fill="#679d93"/></marker></defs>${g.paths.map(e=>`<path class="family-edge ${e.kind==='spouse'?'spouse':e.lineage==='adoptive'||e.lineage==='step'?'nonbiological':'parent'}" data-from="${esc(e.fromId)}" data-to="${esc(e.toId)}" d="${e.d}" ${e.kind==='parent'?'marker-end="url(#family-arrow)"':''}><title>${esc(data.people.find(p=>p.id===e.fromId)?.name)}${e.kind==='parent'?' → 子女：':' ↔ 配偶：'}${esc(data.people.find(p=>p.id===e.toId)?.name)}${e.lineage==='adoptive'?'（收养）':e.lineage==='step'?'（继亲）':''}</title></path>`).join('')}</svg>${g.sections.map(s=>`<div class="family-branch-label">${esc(s.label)}</div>`).join('')}${g.nodes.map(n=>`<button type="button" class="family-node" data-map-person="${esc(n.id)}"></button>`).join('')}</div></div>`:empty('家谱从一个人开始','先录入本人，再连接父母、配偶与子女。');
      const surface=this.viewport.querySelector('.family-map-surface');
      if(surface){surface.style.width=g.width+'px';surface.style.height=g.height+'px';
        surface.querySelectorAll('.family-branch-label').forEach((b,i)=>{b.style.left=g.sections[i].x+'px';b.style.top=g.sections[i].y+'px';});
        surface.querySelectorAll('[data-map-person]').forEach((b,i)=>{const n=g.nodes[i];Object.assign(b.style,{left:n.x+'px',top:n.y+'px',width:n.width+'px',height:n.height+'px'});});}
      this.autoFit=true;requestAnimationFrame(()=>this.fit());
    }
    const byId=new Map(data.people.map(p=>[p.id,p]));
    this.viewport.querySelectorAll('[data-map-person]').forEach(b=>{
      const p=byId.get(b.dataset.mapPerson),self=p.id===data.selfId,selected=p.id===data.focusId;
      const matched=data.term&&[p.name,p.alias,p.birthplace].join(' ').toLowerCase().includes(data.term);
      const relation=ZhaoKinship.describe(data.people,data.links,data.reference,p.id);
      b.classList.toggle('self',self);b.classList.toggle('selected',selected);b.classList.toggle('search-hit',!!matched);b.classList.toggle('archived',!!p.archived);
      b.setAttribute('aria-pressed',String(selected));b.setAttribute('aria-label',p.name+(self?'，本人':'')+'，'+relation+'，查看人物档案');
      b.title=p.name+' · '+relation+(p.archived?' · 已归档':'');
      b.innerHTML=`<span class="family-node-top"><span class="family-node-avatar" aria-hidden="true">${esc(Array.from(p.name)[0]||'人')}</span><span class="family-node-flags">${self?'<span class="self-badge">本人</span>':''}${p.archived?'<small>归档</small>':''}${p.lifeStatus==='deceased'?'<small>已故</small>':''}</span></span><strong>${esc(p.name)}</strong><span class="family-node-relation">${esc(relation)}</span><small>${esc(p.birthDate?p.birthDate.slice(0,4)+' 年生':'生年待考')}</small>`;
    });
    this.viewport.querySelectorAll('.family-edge').forEach(e=>e.classList.toggle('focused',e.dataset.from===data.focusId||e.dataset.to===data.focusId));
    const messages=[...this.graph.warnings];
    if(!data.selfId)messages.unshift('当前账号尚未关联家谱人物，可在“账号与关系”中设置。');
    else if(!this.graph.nodes.some(n=>n.id===data.selfId))messages.unshift('本人已归档，勾选“显示归档人物”后可以定位。');
    if(data.people.filter(p=>!p.archived).length===1)messages.push('目前仅录入一位人物，连接亲属后会自动展开家谱。');
    $('#family-map-note').textContent=messages.join(' ');
    $('#family-locate-self').disabled=!this.graph.nodes.some(n=>n.id===data.selfId);
  }
  applyScale() {
    const v=this.viewport,g=this.graph,space=v.querySelector('.family-map-space'),surface=v.querySelector('.family-map-surface');
    if(!g||!space||!v.clientWidth)return;
    const w=Math.max(v.clientWidth,g.width*this.scale+32),h=Math.max(v.clientHeight,g.height*this.scale+32);
    space.style.width=w+'px';space.style.height=h+'px';
    this.left=(w-g.width*this.scale)/2;this.top=(h-g.height*this.scale)/2;
    surface.style.transform=`translate(${this.left}px,${this.top}px) scale(${this.scale})`;
    $('#family-zoom-value').textContent=Math.round(this.scale*100)+'%';
  }
  fit() {
    const v=this.viewport,g=this.graph;if(!g||!v.clientWidth||!v.clientHeight)return;
    this.autoFit=true;this.scale=Math.max(.001,Math.min(1,(v.clientWidth-40)/g.width,(v.clientHeight-40)/g.height));
    this.applyScale();v.scrollTo(0,0);
  }
  zoom(factor) {
    if(!this.graph)return;
    const v=this.viewport,x=(v.scrollLeft+v.clientWidth/2-(this.left||0))/this.scale,y=(v.scrollTop+v.clientHeight/2-(this.top||0))/this.scale;
    this.autoFit=false;this.scale=Math.max(.001,Math.min(2,this.scale*factor));this.applyScale();
    v.scrollTo(x*this.scale+this.left-v.clientWidth/2,y*this.scale+this.top-v.clientHeight/2);
  }
  locate(id) {
    const n=this.graph?.nodes.find(n=>n.id===id);if(!n)return;
    this.autoFit=false;this.scale=Math.max(this.scale,.9);this.applyScale();
    this.viewport.scrollTo((n.x+n.width/2)*this.scale+this.left-this.viewport.clientWidth/2,(n.y+n.height/2)*this.scale+this.top-this.viewport.clientHeight/2);
    const b=[...this.viewport.querySelectorAll('[data-map-person]')].find(b=>b.dataset.mapPerson===id);b?.focus({preventScroll:true});
  }
}