/* ===================================================================
   FALTA v3 -- fecha a trilha 1 (212 itens de preservacao restantes).

   POR QUE V3 (2026-09-13): a lista da v2 (73) estava subestimada. Recontagem
   direta contra o bucket, com a fila de ~/Downloads ja esvaziada, da 212
   itens sem NENHUMA imagem de preservacao -- ver achado 2.23. Inclui os 8 que
   o subidor.py antigo apagou por confundir TIFF com licenca (achado 2.19).
   Motor identico ao da v2, so a lista muda.

   NAO cobre os 30 bitstreams "extra_seqN" apagados junto: o nome deles e
   nosso, nao da origem, entao a URL precisa ser enumerada item a item com
   pipeline/reparo-multibitstream.js antes.

   POR QUE V2 (achado 2.18, 2026-09-12)
   A v1 tinha tres defeitos que juntos viraram rate-limit na origem:
     1. `iniciar()` nao se protegia contra chamada dupla -- cada
        FALTA.iniciar()/retomar() num script ja rodando somava OUTRO loop
        sobre o mesmo S. Deu `erros: 101` com `atual: 43/73`, e a pausa
        de 3s combinada com a BN virou 1,5s ou menos.
     2. Erro nao interrompia nada: o loop moia os 71 com 60s de backoff
        cada, martelando a origem por mais de uma hora sem chance de
        alguem olhar o resultado.
     3. Nao registrava o codigo HTTP separado da mensagem, entao o
        diagnostico dependia de ler FALHAS na mao.

   Evidencia de que o problema e de origem, nao de URL: 10993 e 10995
   baixaram as 22:52 e FALHARAM na passada seguinte, mesma URL. E os 71
   tem 71/71 thumbs baixados com sucesso -- o item responde, o bitstream
   de preservacao e que nao.

   COMO USAR
     1. Recarregue a aba antes de colar (mata loops velhos da v1).
     2. Cole. Rode FALTA.iniciar().
     3. Ele PARA SOZINHO depois de 5 erros seguidos e mostra a tabela
        de codigos -- e o sinal de que a origem esta recusando, e insistir
        so piora. Espere e rode FALTA.retomar() mais tarde.

   FALTA.status() / .parar() / .retomar() / .erros() / .pendentes()
   =================================================================== */
(() => {

/* [handle, preservation_url] -- apurados em 2026-09-13 (bucket, depois da fila esvaziar) */
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  ["20.500.12156.1/10069", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10069/1/007_IMG_2006.jpg"],
  ["20.500.12156.1/10070", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10070/1/007_IMG_2007.jpg"],
  ["20.500.12156.1/10071", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10071/1/007_IMG_2010.jpg"],
  ["20.500.12156.1/10072", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10072/1/007_IMG_2023.jpg"],
  ["20.500.12156.1/10073", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10073/1/007_IMG_2493.jpg"],
  ["20.500.12156.1/10074", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10074/1/007_IMG_2497.jpg"],
  ["20.500.12156.1/10075", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10075/1/007_IMG_2500.jpg"],
  ["20.500.12156.1/10076", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10076/1/007_IMG_2502.jpg"],
  ["20.500.12156.1/10077", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10077/1/007_IMG_2503.jpg"],
  ["20.500.12156.1/10078", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10078/1/001CC007014.jpg"],
  ["20.500.12156.1/10079", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10079/1/007_IMG_2509.jpg"],
  ["20.500.12156.1/10080", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10080/1/007_IMG_2511.jpg"],
  ["20.500.12156.1/10081", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10081/1/007_IMG_2516.jpg"],
  ["20.500.12156.1/10082", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10082/1/007_IMG_2519.jpg"],
  ["20.500.12156.1/10083", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10083/1/007_IMG_2520.jpg"],
  ["20.500.12156.1/10084", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10084/1/007_IMG_2522.jpg"],
  ["20.500.12156.1/10085", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10085/1/007_IMG_2525.jpg"],
  ["20.500.12156.1/10086", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10086/1/007_IMG_2526.jpg"],
  ["20.500.12156.1/10087", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10087/1/007_IMG_2527.jpg"],
  ["20.500.12156.1/10088", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10088/1/007_IMG_2531.jpg"],
  ["20.500.12156.1/10089", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10089/1/001AN02001006.jpg"],
  ["20.500.12156.1/10090", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10090/1/001CC007015.jpg"],
  ["20.500.12156.1/10091", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10091/1/007_IMG_2836.jpg"],
  ["20.500.12156.1/10092", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10092/1/007_IMG_2837.jpg"],
  ["20.500.12156.1/10093", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10093/1/007_IMG_2838.jpg"],
  ["20.500.12156.1/10094", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10094/1/007_IMG_2839.jpg"],
  ["20.500.12156.1/10095", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10095/1/007_IMG_2897.jpg"],
  ["20.500.12156.1/10096", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10096/1/007_IMG_2904.jpg"],
  ["20.500.12156.1/10097", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10097/1/007_IMG_2912.jpg"],
  ["20.500.12156.1/10098", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10098/1/007_IMG_2913.jpg"],
  ["20.500.12156.1/10099", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10099/1/007_IMG_2914.jpg"],
  ["20.500.12156.1/10100", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10100/1/007_IMG_2917.jpg"],
  ["20.500.12156.1/10101", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10101/1/001CC007016.jpg"],
  ["20.500.12156.1/10102", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10102/1/007_IMG_2934.jpg"],
  ["20.500.12156.1/10103", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10103/1/007_IMG_2935.jpg"],
  ["20.500.12156.1/10104", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10104/1/007_IMG_2944.jpg"],
  ["20.500.12156.1/10105", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10105/1/007_IMG_3108.jpg"],
  ["20.500.12156.1/10106", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10106/1/007_IMG_3110.jpg"],
  ["20.500.12156.1/10107", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10107/1/007_IMG_3113.jpg"],
  ["20.500.12156.1/10108", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10108/1/007_IMG_3114.jpg"],
  ["20.500.12156.1/10109", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10109/1/007_IMG_3119.jpg"],
  ["20.500.12156.1/10110", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10110/1/007_IMG_3165.jpg"],
  ["20.500.12156.1/10111", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10111/1/007_IMG_3259.jpg"],
  ["20.500.12156.1/10112", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10112/1/001CC007019.jpg"],
  ["20.500.12156.1/10113", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10113/1/007_IMG_3285.jpg"],
  ["20.500.12156.1/10114", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10114/1/007_IMG_3299.jpg"],
  ["20.500.12156.1/10115", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10115/1/007_IMG_3309.jpg"],
  ["20.500.12156.1/10116", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10116/1/007_IMG_3316.jpg"],
  ["20.500.12156.1/10117", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10117/1/007_IMG_3330.jpg"],
  ["20.500.12156.1/10118", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10118/1/007_IMG_3332.jpg"],
  ["20.500.12156.1/10119", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10119/1/007_IMG_3347.jpg"],
  ["20.500.12156.1/10120", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10120/1/007_IMG_3350.jpg"],
  ["20.500.12156.1/10121", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10121/1/007_IMG_3352.jpg"],
  ["20.500.12156.1/10122", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10122/1/007_IMG_3353.jpg"],
  ["20.500.12156.1/10123", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10123/1/001CC007020.jpg"],
  ["20.500.12156.1/10124", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10124/1/007_IMG_3437.jpg"],
  ["20.500.12156.1/10125", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10125/1/007_IMG_3469.jpg"],
  ["20.500.12156.1/10126", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10126/1/007_IMG_3527.jpg"],
  ["20.500.12156.1/10127", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10127/1/007_IMG_3528.jpg"],
  ["20.500.12156.1/10128", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10128/1/007_IMG_3533.jpg"],
  ["20.500.12156.1/10129", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10129/1/007_IMG_3534.jpg"],
  ["20.500.12156.1/10130", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10130/1/007_IMG_3535.jpg"],
  ["20.500.12156.1/10131", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10131/1/007_IMG_3536.jpg"],
  ["20.500.12156.1/10132", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10132/1/007_IMG_3539.jpg"],
  ["20.500.12156.1/10133", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10133/1/007_IMG_3540.jpg"],
  ["20.500.12156.1/10134", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10134/1/001CC007025.jpg"],
  ["20.500.12156.1/10135", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10135/1/007_IMG_3547.jpg"],
  ["20.500.12156.1/10136", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10136/1/007_IMG_3559.jpg"],
  ["20.500.12156.1/10137", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10137/1/007_IMG_3585.jpg"],
  ["20.500.12156.1/10138", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10138/1/007_IMG_3588.jpg"],
  ["20.500.12156.1/10139", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10139/1/007_IMG_3590.jpg"],
  ["20.500.12156.1/10140", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10140/1/007_IMG_3594.jpg"],
  ["20.500.12156.1/10141", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10141/1/007_IMG_3596.jpg"],
  ["20.500.12156.1/10142", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10142/1/007_IMG_3597.jpg"],
  ["20.500.12156.1/10143", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10143/1/007_IMG_3598.jpg"],
  ["20.500.12156.1/10144", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10144/1/007_IMG_3601.jpg"],
  ["20.500.12156.1/10145", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10145/1/001CC008007.jpg"],
  ["20.500.12156.1/10146", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10146/1/007_IMG_3603.jpg"],
  ["20.500.12156.1/10147", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10147/1/007_IMG_3607.jpg"],
  ["20.500.12156.1/10148", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10148/1/007_IMG_3631.jpg"],
  ["20.500.12156.1/10149", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10149/1/007_IMG_3634.jpg"],
  ["20.500.12156.1/10150", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10150/1/007_IMG_3636.jpg"],
  ["20.500.12156.1/10151", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10151/1/007_IMG_3639.jpg"],
  ["20.500.12156.1/10152", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10152/1/007_IMG_3642.jpg"],
  ["20.500.12156.1/10153", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10153/1/007_IMG_3739.jpg"],
  ["20.500.12156.1/10154", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10154/1/007_IMG_3740.jpg"],
  ["20.500.12156.1/10155", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/10155/1/007_IMG_3742.jpg"],
  ["20.500.12156.1/14358", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/14358/1/Alb%200261%20139.jpg"],
  ["20.500.12156.1/14359", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/14359/1/Alb%200261%20136.jpg"],
  ["20.500.12156.1/14360", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/14360/1/Alb%200261%20141.jpg"],
  ["20.500.12156.1/14361", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/14361/1/Alb%200261%20142.jpg"],
  ["20.500.12156.1/14362", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/14362/1/Alb%200261%20143.jpg"],
  ["20.500.12156.1/14363", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/14363/1/Alb%200261%20144.jpg"],
  ["20.500.12156.1/14364", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/14364/1/Alb%200261%20146.jpg"],
  ["20.500.12156.1/14368", "https://brasilianafotografica.bn.gov.br/brasiliana/bitstream/20.500.12156.1/14368/1/Alb%200261%20163.jpg"],
];

const PAUSA        = 5000;   // v1 usava 3000; mais folga depois do rate-limit
const BACKOFF      = 30000;  // v1 dormia 60s por erro e moia os 71: 71 min
const MAX_SEGUIDOS = 5;     // desiste depois disso -- nao martela a origem
const CHAVE        = 'bras_faltantes_73';

const sleep = ms => new Promise(r => setTimeout(r, ms));
const jit   = () => PAUSA + Math.floor(Math.random() * 1500);

const FEITOS = new Set(JSON.parse(localStorage.getItem(CHAVE) || '[]'));
const marcar = h => { FEITOS.add(h);
  localStorage.setItem(CHAVE, JSON.stringify([...FEITOS])); };

const S = {fase: 'ocioso', feito: 0, erros: 0, total: 0, atual: '', parar: false};
const FALHAS = [];

function resumo() {
  const c = {};
  FALHAS.forEach(f => { c[f.codigo] = (c[f.codigo] || 0) + 1; });
  return c;
}

async function baixarUm(handle, url) {
  const r = await fetch(url, {credentials: 'same-origin'});
  if (!r.ok) { const e = new Error('HTTP ' + r.status); e.codigo = r.status; throw e; }
  const b = await r.blob();
  if (b.size < 1024) { const e = new Error('blob ' + b.size + 'B'); e.codigo = 'blob-curto'; throw e; }
  const orig = decodeURIComponent(url.split('/').pop());
  const nome = `BRAS__${handle.replace(/\//g, '_')}__${orig}`.replace(/[\\/:*?"<>|]/g, '_');
  const a = document.createElement('a');
  a.href = URL.createObjectURL(b); a.download = nome;
  document.body.appendChild(a); a.click(); a.remove();
  setTimeout(() => URL.revokeObjectURL(a.href), 30000);
  return b.size;
}

async function iniciar() {
  if (S.fase === 'baixando') {            // <-- o defeito nº1 da v1
    console.warn('FALTA ja esta rodando (' + S.atual + '). Use FALTA.parar() antes.');
    return;
  }
  S.parar = false; S.fase = 'baixando'; FALHAS.length = 0;
  const lista = FALTANTES.filter(([h]) => !FEITOS.has(h));
  S.total = lista.length; S.feito = 0; S.erros = 0;
  console.log(`FALTA v2: ${lista.length} pendentes, ~${Math.ceil(lista.length * PAUSA / 60000)} min se tudo der certo`);

  let seguidos = 0;
  for (let i = 0; i < lista.length; i++) {
    if (S.parar) { S.fase = 'parado'; console.log('parado em ' + (i + 1)); return; }
    const [handle, url] = lista[i];
    S.atual = `${i + 1}/${lista.length} ${handle}`;
    try {
      const bytes = await baixarUm(handle, url);
      marcar(handle); S.feito++; seguidos = 0;
      console.log(`  ok   ${handle}  ${(bytes / 1048576).toFixed(1)} MB  (${i + 1}/${lista.length})`);
    } catch (e) {
      S.erros++; seguidos++;
      FALHAS.push({handle, url, codigo: e.codigo ?? 'rede', erro: e.message});
      console.warn(`  ERRO ${handle}: ${e.message}`);
      if (seguidos >= MAX_SEGUIDOS) {      // <-- o defeito nº2 da v1
        S.fase = 'abortado';
        console.error(`\nFALTA abortou: ${seguidos} erros seguidos. A origem esta recusando -- insistir so piora.`);
        console.table(resumo());
        console.log('Espere (30+ min) e rode FALTA.retomar(). O que ja baixou esta marcado.');
        return;
      }
      await sleep(BACKOFF);
    }
    await sleep(jit());
  }

  S.fase = 'concluido';
  console.log(`\nFALTA v2 concluido. ok=${S.feito} erro=${S.erros}`);
  if (FALHAS.length) { console.table(resumo()); console.table(FALHAS); }
  else console.log('Trilha 1 fechada: 13.059/13.059. O subidor sobe o resto sozinho.');
}

window.FALTA = {
  iniciar, status: () => ({...S}), retomar: () => iniciar(),
  parar: () => { S.parar = true; },
  pendentes: () => FALTANTES.filter(([h]) => !FEITOS.has(h)).map(([h]) => h),
  erros: () => [...FALHAS], resumo,
  limparMarcas: () => localStorage.removeItem(CHAVE),
};

console.log(`FALTA v2 pronto: ${window.FALTA.pendentes().length} pendentes de ${FALTANTES.length}.`);
console.log('Rode FALTA.iniciar()');
})();