// Runs actual submission code in a JS sandbox; no browser, network or database.
const test = require('node:test');
const assert = require('node:assert/strict');
const fs = require('node:fs');
const path = require('node:path');
const vm = require('node:vm');
const {webcrypto} = require('node:crypto');
const source = fs.readFileSync(path.resolve(__dirname, '../../arr_web/static/app.js'), 'utf8');
const boot = '  boot();\n})();';
assert(source.endsWith(boot+'\n') || source.endsWith(boot));
function harness(respond) {
  const elements=new Map(), storage=new Map(), calls=[];
  const element=selector => {
    if (!elements.has(selector)) elements.set(selector,{value:'', disabled:false, hidden:false, textContent:'',
      classList:{add(){},remove(){},toggle(){},contains(){return false;}},setAttribute(){}});
    return elements.get(selector);
  };
  const context=vm.createContext({Headers, console, Date, Intl, Uint8Array,
    document:{hidden:false,querySelector:element},
    window:{ARRI18n:{t:key=>key,text:value=>value,errorMessage:code=>code},crypto:webcrypto,
      setTimeout(){return 1;},clearTimeout(){},location:{replace(){}}},
    localStorage:{setItem:(k,v)=>storage.set(k,v),getItem:k=>storage.get(k),removeItem:k=>storage.delete(k)},
    fetch:async (url, options) => {calls.push({url,method:options.method||'GET',body:options.body});return respond(url,options,calls);},
  });
  vm.runInContext(source.replace(boot,'  globalThis.subject = {state, submitARRDownload, rememberARRIntent, acceptARRDownloadTask, handleARRDownloadDateChange, initARRDownload};\n})();'),context);
  const subject=context.subject;
  Object.assign(subject.state,{arrDownloadReady:true,arrDownloadLoaded:true,arrDownloadStorageKey:'test',csrf:'fixture'});
  element('#arr-download-date').value='2026-09-16';
  return {...subject,calls,storage,element,submit:()=>subject.submitARRDownload({preventDefault(){}})};
}
const response=(status,data,code) => ({status,ok:status<400,json:async()=>code?{ok:false,error:{code}}:{ok:true,data}});
const refusal=()=>response(409,null,'REPLAY_DATE_NOT_AVAILABLE');

test('definite unavailable source date clears only the refused intent and permits correction',async()=>{
  const h=harness(()=>refusal());
  await h.submit();
  assert.equal(h.calls.length,1);
  assert.equal(h.state.arrDownloadIntent,null);
  assert.equal(h.storage.has('test'),false);
  assert.equal(h.state.arrDownloadTask.status,'date_unavailable');
  assert.equal(h.element('#arr-download-date').disabled,false);
  assert.equal(h.element('#arr-download-date').value,'2026-09-16');
  assert.equal(h.element('#arr-download-button').disabled,true);
});

test('old not_received intent is released only after the explicit source-date refusal',async()=>{
  const h=harness(()=>refusal());
  const intent={request_id:'a'.repeat(32),report_date:'2026-09-16'};
  h.rememberARRIntent(intent);
  h.state.arrDownloadTask={...intent,status:'not_received',can_retry:false};
  await h.submit();
  assert.equal(JSON.parse(h.calls[0].body).request_id,intent.request_id);
  assert.equal(h.state.arrDownloadIntent,null);
  assert.equal(h.element('#arr-download-date').disabled,false);
});

test('lost response and 404 keep original identity for explicit resubmission',async()=>{
  let posts=0;
  const h=harness((url,options)=>{
    if(options.method==='POST') {
      posts++;
      if(posts===1) throw new TypeError('network lost');
      return response(202,{...JSON.parse(options.body),status:'queued',job_id:null,can_retry:false});
    }
    return response(404,null,'ARR_DOWNLOAD_NOT_FOUND');
  });
  await h.submit();
  const first=JSON.parse(h.calls[0].body);
  assert.equal(h.state.arrDownloadTask.status,'not_received');
  assert.equal(h.state.arrDownloadIntent.request_id,first.request_id);
  assert.equal(h.element('#arr-download-date').disabled,false);
  h.element('#arr-download-date').value='2026-09-17';
  h.handleARRDownloadDateChange();
  await h.submit();
  assert.deepEqual(JSON.parse(h.calls[2].body),first);
  assert.equal(posts,2);
  assert.equal(h.state.arrDownloadTask.status,'queued');
  assert.equal(h.element('#arr-download-date').value,'2026-09-17');
});

test('other conflict codes never discard an uncertain request',async()=>{
  const h=harness((url,options)=>options.method==='POST'
    ? response(409,null,'ARR_DOWNLOAD_DATE_CONFLICT'):response(404,null,'ARR_DOWNLOAD_NOT_FOUND'));
  await h.submit();
  const first=JSON.parse(h.calls[0].body);
  assert.equal(h.state.arrDownloadIntent.request_id,first.request_id);
  assert.equal(h.element('#arr-download-date').disabled,false);
  h.element('#arr-download-date').value='2026-09-17';
  h.handleARRDownloadDateChange();
  assert.equal(h.state.arrDownloadIntent.request_id,first.request_id);
});

test('retry endpoint errors retain an existing interrupted task identity',async()=>{
  const h=harness((url,options)=>options.method==='POST'?refusal():response(503,null,'ARR_DOWNLOAD_UNAVAILABLE'));
  const intent={request_id:'b'.repeat(32),report_date:'2026-09-15'};
  h.rememberARRIntent(intent);
  h.state.arrDownloadTask={...intent,status:'interrupted',can_retry:true};
  h.handleARRDownloadDateChange();
  await h.submit();
  assert.equal(h.calls[0].url,`/api/arr-downloads/${intent.request_id}/retry`);
  assert.equal(h.state.arrDownloadIntent.request_id,intent.request_id);
  assert.equal(h.element('#arr-download-date').disabled,false);
  assert.equal(h.element('#arr-download-date').value,'2026-09-16');
});

test('selecting a next date during a running task survives polling without submitting or replacing that task',async()=>{
  const h=harness(()=>{throw new Error('No request expected');});
  const task={request_id:'c'.repeat(32),report_date:'2026-09-15',status:'downloading',can_retry:false};
  await h.acceptARRDownloadTask(task,{sync:false});
  assert.equal(h.element('#arr-download-date').disabled,false);
  assert.equal(h.element('#arr-date-toggle').disabled,false);
  h.element('#arr-download-date').value='2026-09-16';
  h.handleARRDownloadDateChange();
  await h.acceptARRDownloadTask({...task,status:'processing'},{sync:false});
  await h.submit();
  assert.equal(h.calls.length,0);
  assert.equal(h.element('#arr-download-date').value,'2026-09-16');
  assert.equal(h.element('#arr-download-button').disabled,true);
  assert.equal(h.state.arrDownloadIntent.request_id,task.request_id);
  assert.equal(JSON.parse(h.storage.get('test')).report_date,'2026-09-15');
  assert.match(h.element('#arr-download-status').textContent,/2026-09-15/);
});

for (const status of ['succeeded','failed']) {
  test(`the next selected date is only submitted explicitly after ${status}`,async()=>{
    const h=harness((url,options)=>response(202,{...JSON.parse(options.body),status:'queued',can_retry:false}));
    const task={request_id:'d'.repeat(32),report_date:'2026-09-15',status:'downloading',can_retry:false};
    await h.acceptARRDownloadTask(task,{sync:false});
    h.element('#arr-download-date').value='2026-09-16';
    h.handleARRDownloadDateChange();
    await h.acceptARRDownloadTask({...task,status,can_retry:status==='failed'},{sync:false});
    assert.equal(h.calls.length,0);
    assert.equal(h.element('#arr-download-button').disabled,false);
    assert.equal(h.element('#arr-download-button').textContent,'arr_download.start');
    await h.submit();
    assert.equal(h.calls.length,1);
    assert.equal(h.calls[0].url,'/api/arr-downloads');
    const submitted=JSON.parse(h.calls[0].body);
    assert.equal(submitted.report_date,'2026-09-16');
    assert.notEqual(submitted.request_id,task.request_id);
  });
}

test('editing before status loads still restores the running task and retains the selected date',async()=>{
  const task={request_id:'e'.repeat(32),report_date:'2026-09-15',status:'downloading',can_retry:false};
  const h=harness(()=>response(200,{ready:true,default_date:'2026-09-17',latest_task:task}));
  h.handleARRDownloadDateChange();
  await h.initARRDownload();
  assert.equal(h.state.arrDownloadTask.request_id,task.request_id);
  assert.equal(h.element('#arr-download-date').value,'2026-09-16');
  assert.equal(h.element('#arr-download-button').disabled,true);
  assert.equal(h.calls.length,1);
  assert.equal(h.calls[0].method,'GET');
});