import {hardenedElectronFuses,verifyPackagedFuses} from './package-fuses.mjs';
import {spawnSync} from 'node:child_process';
import {readFileSync,readdirSync,writeFileSync,createReadStream} from 'node:fs';
import {createHash,randomUUID} from 'node:crypto';
import {createRequire} from 'node:module';
import path from 'node:path';
import {provisionBrokerRuntime,BROKER_RUNTIME} from './provision-broker-runtime.mjs';
import {prepareBrokerResources,verifyPackagedBroker,embeddedBrokerManifestReader,snapshotScannerResources,verifyScannerResources} from './package-broker-resources.mjs';
import {createWindowsPackagePlan} from './windows-package-plan.mjs';
import {buildVerifiedInstaller} from './verified-installer.mjs';
const platform=process.argv[2];
if(platform!=='win'||process.platform!=='win32'||process.argv.slice(3).some(value=>value!=='--unpacked-only'))throw Error('Windows is the active build target; only --unpacked-only is additionally supported');
const workspace=path.resolve('.');
for(const args of [['scripts/provision-windows-runtime.py'],['scripts/provision-semantic-runtime.py','--verify']]){
  const result=spawnSync(process.env.SAFETYNET_BUILD_PYTHON||'python',args,{stdio:'inherit'});if(result.status!==0)process.exit(result.status??1);
}
await provisionBrokerRuntime(workspace);
const name=process.env.BRAND_NAME||'SafetyNet',id=process.env.BRAND_APP_ID||'enterprise.safetynet.browser';
const configuration=JSON.parse(readFileSync('package.json','utf8')),output=path.resolve(configuration.build.directories.output);
// Reuse the pinned installed distribution already exercised by native tests.
// This avoids a second archive extraction and Windows directory-rename locks.
const electronDirectory=path.dirname(createRequire(import.meta.url)('electron'));
if(readFileSync(path.join(electronDirectory,'version'),'utf8').trim().replace(/^v/,'')!==configuration.devDependencies.electron)throw Error('Installed Electron does not match the build pin');
const plan=createWindowsPackagePlan({workspace,outputDirectory:output,electronDirectory,productName:name,appId:id});
const broker=await prepareBrokerResources({root:workspace,build:configuration.build});
const scannerSnapshot=await snapshotScannerResources(workspace);
const artifactName=`${name}-Setup-${configuration.version}.exe`;
if(!/^[\w .-]+\.exe$/.test(artifactName))throw Error('Invalid installer artifact name');
const buildConfiguration={...broker.configuration,artifactName,electronFuses:hardenedElectronFuses};
const configPath=path.join(workspace,'.runtime/windows',`package-build-${randomUUID()}.json`);
writeFileSync(configPath,JSON.stringify(buildConfiguration,null,2)+'\n',{flag:'wx'});
const configArgs=[`--config=${configPath}`];
function sourceSnapshot(){
  const entries=[];
  function walk(directory){for(const item of readdirSync(directory,{withFileTypes:true})){const file=path.join(directory,item.name);if(item.isSymbolicLink())throw Error('Build source reparse point rejected');if(item.isDirectory())walk(file);else if(item.isFile())entries.push([file,createHash('sha256').update(readFileSync(file)).digest('hex')]);}}
  for(const directory of ['apps/browser','apps/network-broker','apps/inspector','packages/core','scripts'])walk(directory);
  for(const file of ['package.json','package-lock.json',configuration.build.win.icon,configPath])entries.push([file,createHash('sha256').update(readFileSync(file)).digest('hex')]);
  return createHash('sha256').update(JSON.stringify(entries.sort((a,b)=>a[0].localeCompare(b[0])))).digest('hex');
}
const sourcesBefore=sourceSnapshot();
const run=args=>spawnSync(process.execPath,['node_modules/electron-builder/out/cli/cli.js',...args,...configArgs],{stdio:'inherit',env:process.env});
const result=run(plan.unpacked.args);if(result.status!==0)process.exit(result.status??1);
await broker.verifySources();if(sourceSnapshot()!==sourcesBefore)throw Error('Build sources changed; discard this package');
const resources=path.join(plan.unpacked.directory,'resources'),archive=path.join(resources,'app.asar'),executable=path.join(plan.unpacked.directory,`${name}.exe`);
async function verify(){
  await broker.verifySources();if(sourceSnapshot()!==sourcesBefore)throw Error('Build sources changed; discard this package');
  await verifyPackagedFuses(executable,archive);
  await verifyPackagedBroker({resources,expectedManifest:broker.manifest,readEmbeddedManifest:embeddedBrokerManifestReader(archive)});
  await verifyScannerResources(resources,scannerSnapshot);
  const acl=spawnSync(path.join(resources,'python/python.exe'),[path.join(resources,'inspector/provision_runtime_acl.py')],{stdio:'inherit',windowsHide:true});if(acl.status!==0)throw Error('Packaged scanner ACL verification failed');
  return {identity:await readIdentity(),fuses:true,resources:true,broker:true,runtimeAcl:true};
}
// This verifies/provisions the unpacked build location only. NSIS extraction
// does not preserve these ACEs: a reviewed installer post-install ACL step and
// actual standard-user Program Files acceptance remain required. Browser
// startup must NEVER silently provision or broaden installation permissions.
const acl=spawnSync(path.join(resources,'python/python.exe'),[path.join(resources,'inspector/provision_runtime_acl.py'),'--provision'],{stdio:'inherit',windowsHide:true});if(acl.status!==0)process.exit(acl.status??1);
async function treeHash(directory){
  const hash=createHash('sha256');
  async function walk(current){for(const item of readdirSync(current,{withFileTypes:true}).sort((a,b)=>a.name.localeCompare(b.name))){const file=path.join(current,item.name);if(item.isSymbolicLink())throw Error('Packaged reparse point rejected');if(item.isDirectory())await walk(file);else if(item.isFile()){const content=createHash('sha256');let bytes=0;for await(const chunk of createReadStream(file)){content.update(chunk);bytes+=chunk.length;}hash.update(JSON.stringify([path.relative(directory,file).replaceAll('\\','/'),bytes,content.digest('hex')])+'\n');}}}
  await walk(directory);return hash.digest('hex');
}
async function readIdentity(){await broker.verifySources();const scanners=await snapshotScannerResources(workspace);if(JSON.stringify(scanners)!==JSON.stringify(scannerSnapshot))throw Error('Scanner sources changed; discard this package');return {sourceSha256:sourceSnapshot(),runtimeSha256:createHash('sha256').update(JSON.stringify({electron:configuration.devDependencies.electron,broker:BROKER_RUNTIME,scanners})).digest('hex'),packageSha256:await treeHash(plan.unpacked.directory)};}
await verify();
console.log('Unpacked browser, embedded broker manifest, complete broker payload, security fuses and scanner ACLs verified.');
if(!process.argv.includes('--unpacked-only')){
  const installer=await buildVerifiedInstaller({plan,expectedIdentity:await readIdentity(),readIdentity,verify,run,installerPath:path.join(output,artifactName)});
  console.log(JSON.stringify({installer:installer.path,bytes:installer.bytes,sha256:installer.sha256,brokerIncluded:true,productionActivationVerified:false}));
}