0hmX/am3352

scripts/rebind-ddr-support-parent.ts

/** Rebind support evidence only when parent candidate, host and routing inputs are byte-identical. */
import{readFileSync,writeFileSync,cpSync,existsSync,readdirSync}from'node:fs'
import{resolve}from'node:path'
import{createHash}from'node:crypto'
const[oldArg,newArg,supportArg,outArg]=process.argv.slice(2);if(!outArg)throw Error('Usage: old-parent corrected-parent support output')
const old=resolve(oldArg!),next=resolve(newArg!),support=resolve(supportArg!),out=resolve(outArg!),fh=(p:string)=>createHash('sha256').update(readFileSync(p)).digest('hex'),hash=(v:any)=>createHash('sha256').update(JSON.stringify(v)??'undefined').digest('hex'),read=(p:string)=>JSON.parse(readFileSync(p,'utf8')),equalFiles=['candidate.circuit.json','host-bundle.json','routing-input.json'];if(existsSync(out))throw Error('Output exists')
for(const n of equalFiles)if(fh(old+'/'+n)!==fh(next+'/'+n))throw Error(`Geometry/check input differs: ${n}`)
const a=read(old+'/report.json'),b=read(next+'/report.json'),r=read(support+'/report.json'),m=read(support+'/original-copper-replacements.json');if(!r.accepted||m.parentDirectory!==old||r.parentCircuitSha256!==b.candidateCircuitSha256||r.candidateCircuitSha256!==hash(read(support+'/candidate.circuit.json')))throw Error('Support parent/candidate identity differs')
const changes:any[]=[];for(const k of new Set([...Object.keys(a),...Object.keys(b)])){if(hash(a[k])!==hash(b[k])){const inherited=hash(r[k])===hash(a[k]);changes.push({key:k,inherited,beforeHash:hash(a[k]),afterHash:hash(b[k])});if(inherited){if(k in b)r[k]=b[k];else delete r[k]}}}
cpSync(support,out,{recursive:true});const bindings=Object.fromEntries(readdirSync(next).filter(n=>n.endsWith('.json')).map(n=>[resolve(next,n),fh(resolve(next,n))]));m.parentDirectory=next;r.parentDirectory=next;r.originalCopperReplacementsSha256=hash(m);r.parentMetadataRebase={oldParentDirectory:old,correctedParentDirectory:next,byteIdenticalFiles:equalFiles.map(name=>({name,sha256:fh(next+'/'+name)})),changedReportFields:changes,correctedParentSourceHashes:bindings,scope:'Only inherited metadata rebound. Candidate and checked routing/host copper are unchanged; support validation is reused exactly.'};r.sourceHashes={...r.sourceHashes,...bindings};const sm=read(out+'/support-replacements.json');sm.parentDirectory=next
for(const[n,v]of [['report.json',r],['original-copper-replacements.json',m],['support-replacements.json',sm]] as const)writeFileSync(out+'/'+n,JSON.stringify(v,null,2)+'\n');for(const[p,h]of Object.entries(bindings))if(fh(p)!==h)throw Error('Corrected parent changed');console.log(JSON.stringify({candidateCircuitSha256:r.candidateCircuitSha256,accepted:r.accepted,correctedParent:next}))