'use strict';
const assert=require('assert/strict');
const fs=require('fs');
const fsp=fs.promises;
const os=require('os');
const path=require('path');
const {spawnSync}=require('child_process');
const BuildMeta=require('../build-meta');
const service=require('../scripts/service-control');

(async()=>{
  assert.equal(BuildMeta.APP_VERSION,'48.0');
  const root=await fsp.mkdtemp(path.join(os.tmpdir(),'linkfield-v4794-'));
  const publicDir=path.join(root,'public_html','link-field');
  const dataDir=path.join(root,'data');
  const logFile=path.join(root,'server.log');
  const serviceDir=path.join(root,'service');
  const env={...process.env,LINK_FIELD_PUBLIC_DIR:publicDir,LINK_FIELD_TEST_DATA_ROOT:dataDir,LINK_FIELD_TEST_DATA_ROOT:path.join(root,'shared-root'),LINK_FIELD_SERVICE_DIR:serviceDir,LINK_FIELD_LOG_FILE:logFile,PORT:'0'};
  try{
    await service.deployPublicFiles(publicDir);
    for(const relative of ['index.html','app.js','runtime-config.js','api-bridge.php','assets','client']){
      assert.equal(fs.existsSync(path.join(publicDir,relative)),true,`${relative} was not deployed`);
    }
    const manifest=JSON.parse(await fsp.readFile(path.join(publicDir,'.linkfield-deployment.json'),'utf8'));
    assert.equal(manifest.version,'48.0');

    const start=spawnSync(process.execPath,[path.join(service.ROOT,'scripts','service-control.js'),'start'],{cwd:service.ROOT,env,encoding:'utf8',timeout:20_000});
    assert.equal(start.status,0,start.stderr||start.stdout);
    assert.match(start.stdout,/started in the background/i);
    assert.match(start.stdout,/command prompt is available again/i);
    const pidFile=path.join(serviceDir,'server.pid');
    const pid=Number((await fsp.readFile(pidFile,'utf8')).trim());
    assert.equal(service.isProcessRunning(pid),true);
    const port=Number((await fsp.readFile(path.join(publicDir,'.linkfield-port'),'utf8')).trim());
    assert.ok(Number.isSafeInteger(port)&&port>0);
    const response=await fetch(`http://127.0.0.1:${port}/api/cloud/status`);
    assert.equal(response.ok,true);
    const status=await response.json();
    assert.equal(status.sharedWorld,true);
    assert.equal(status.appVersion,'48.0');
    assert.equal(fs.existsSync(path.join(publicDir,'.htaccess')),true);

    const secondStart=spawnSync(process.execPath,[path.join(service.ROOT,'scripts','service-control.js'),'start'],{cwd:service.ROOT,env,encoding:'utf8',timeout:20_000});
    assert.equal(secondStart.status,0,secondStart.stderr||secondStart.stdout);
    assert.match(secondStart.stdout,/Replacing the running LinkField server/i);
    const replacementPid=Number((await fsp.readFile(pidFile,'utf8')).trim());
    assert.notEqual(replacementPid,pid);
    assert.equal(service.isProcessRunning(pid),false);
    assert.equal(service.isProcessRunning(replacementPid),true);

    const stop=spawnSync(process.execPath,[path.join(service.ROOT,'scripts','service-control.js'),'stop'],{cwd:service.ROOT,env,encoding:'utf8',timeout:10_000});
    assert.equal(stop.status,0,stop.stderr||stop.stdout);
    assert.equal(service.isProcessRunning(replacementPid),false);
  }finally{
    spawnSync(process.execPath,[path.join(service.ROOT,'scripts','service-control.js'),'stop'],{cwd:service.ROOT,env,encoding:'utf8',timeout:10_000});
    await fsp.rm(root,{recursive:true,force:true});
  }
  console.log('LinkField v48.0 background deployment and service smoke test passed');
})().catch(error=>{console.error(error);process.exitCode=1});