import { readFileSync } from 'node:fs';
const { compData, wireData, pinData } = JSON.parse(readFileSync('H:/caiic_workspace/mothercup/hardware_design/_dump.json', 'utf8'));

// Build a connectivity graph from wire segments. Snap to ~1 unit grid.
const key = (x,y) => `${Math.round(x)},${Math.round(y)}`;
const graph = new Map(); // node -> {neighbors:Set, label:null}

function node(k) { if(!graph.has(k)) graph.set(k,{n:new Set(),label:null}); return graph.get(k); }
function link(a,b){ const A=node(a),B=node(b); A.n.add(b); B.n.add(a); }

for (const w of wireData) {
  const p = Array.isArray(w.line) ? (Array.isArray(w.line[0]) ? w.line.flat() : w.line) : [];
  const pts = [];
  for (let i=0;i+1<p.length;i+=2) pts.push(key(p[i],p[i+1]));
  // connect consecutive points
  for (let i=0;i+1<pts.length;i++) link(pts[i],pts[i+1]);
  // if a wire has a net label, mark ALL its points with the label
  if (w.net) for (const k of pts) node(k).label = w.net;
}

// net flags: components with no designator but a name -> mark nearest node
for (const f of compData.filter(c=>(!c.d||c.d.trim()==='')&&c.n)) {
  const k = key(f.x,f.y);
  const nd = node(k);
  if (!nd.label) nd.label = f.n;
}

// Find connected components and collect labels
const visited = new Set();
function component(start) {
  const comp = new Set(); const labels = new Set();
  const stack=[start]; visited.add(start);
  while(stack.length){
    const k=stack.pop(); comp.add(k);
    const nd=graph.get(k); if(nd.label) labels.add(nd.label);
    for(const nb of nd.n) if(!visited.has(nb)){visited.add(nb);stack.push(nb);}
  }
  return {comp,labels:[...labels]};
}

const components=[];
for(const k of graph.keys()){ if(!visited.has(k)) components.push(component(k)); }

function compOf(x,y){
  const k=key(x,y);
  for(const c of components) if(c.comp.has(k)) return c;
  // nearest node within 2 units
  for(const c of components) for(const kk of c.comp){ const [a,b]=kk.split(',').map(Number); if(Math.abs(a-x)<=2&&Math.abs(b-y)<=2) return c; }
  return null;
}

console.log('=== key pin -> net (connectivity) ===');
for (const k of ['SW1','Q1','Q7','Q4','Q2','Q3','D1','U5','U1']) {
  const pd=pinData[k]; if(!pd){console.log(k+': n/a');continue;}
  console.log(`${k} (${pd.name})`);
  for(const p of pd.pins){
    const c=compOf(p.x,p.y);
    console.log(`   pin${p.num} ${p.name||''} @(${p.x.toFixed(0)},${p.y.toFixed(0)}) -> ${c?JSON.stringify(c.labels):'??'} (${c?c.comp.size:0} nodes)`);
  }
}

console.log('\n=== labeled nets (component size >= 2) ===');
for(const c of components) if(c.labels.length && c.comp.size>=2) console.log(`  ${JSON.stringify(c.labels)} : ${c.comp.size} nodes`);