CodexRestoreView.tsx

1// Peach Codex — restoration view.2//3// Two entry paths, both feeding the same ChunkBuffer:4//   • Camera scan — Aztec codes via @zxing/library5//   • PDF import — pdf.js + grid scan of each rendered page6//7// Once ChunkBuffer.isReady():8//   1. Prompt for the master passphrase.9//   2. Reconstruct + integrity-verify locally (popup) via reconstructAndVerify.10//   3. Hand the payload to the SW (RESTORE_FROM_CODEX) for actual decrypt11//      and replace.12//13// Restoration is intentionally NOT Pro-gated — a printed Codex must remain14// restorable forever, regardless of license state.1516import { createSignal, onCleanup, onMount, Show } from "solid-js";17import { sendMessage } from "../../shared/bridge";18import {19  ChunkBuffer,20  parseRawScan,21  reconstructAndVerify,22} from "../codex/restore";23import { startScanner } from "../codex/scanner";24import type { ScannerHandle } from "../codex/scanner";25import type { CodexPayload } from "../../shared/codex-types";2627interface CodexRestoreViewProps {28  onBack: () => void;29  onRestoreSuccess: () => void;30}3132type Phase =33  | "choose"34  | "scanning"35  | "pdf-import"36  | "pdf-shortfall"37  | "ready"38  | "restoring"39  | "success"40  | "error";4142export function CodexRestoreView(props: CodexRestoreViewProps) {43  // The buffer is intentionally not stored in a signal — its identity is44  // stable across the lifetime of the view and we read it through the45  // `size()`/`isReady()` methods. We mirror its observable state into46  // signals so Solid can re-render.47  const buffer = new ChunkBuffer();48  let videoEl: HTMLVideoElement | undefined;49  let scanner: ScannerHandle | null = null;50  let pdfFileInput: HTMLInputElement | undefined;5152  const [phase, setPhase] = createSignal<Phase>("choose");53  const [scanned, setScanned] = createSignal(0);54  const [dataShards, setDataShards] = createSignal<number | null>(null);55  const [verifyCode, setVerifyCode] = createSignal<string | null>(null);56  const [hint, setHint] = createSignal(57    "point your camera at the first code on page 1",58  );59  const [cameraError, setCameraError] = createSignal<string | null>(null);60  const [scanWarning, setScanWarning] = createSignal<string | null>(null);61  const [pdfProgress, setPdfProgress] = createSignal<{62    page: number;63    total: number;64  } | null>(null);65  const [pdfError, setPdfError] = createSignal<string | null>(null);66  const [pdfShortfall, setPdfShortfall] = createSignal<{67    found: number;68    missing: number;69    ready: number;70    total: number;71  } | null>(null);72  // Hold the reconstructed payload between the integrity check and the SW73  // call so the user can re-enter the passphrase on a wrong-password failure74  // without rescanning every code.75  const [pendingPayload, setPendingPayload] = createSignal<CodexPayload | null>(76    null,77  );78  const [passphrase, setPassphrase] = createSignal("");79  const [restoreError, setRestoreError] = createSignal<string | null>(null);80  const [restoredCount, setRestoredCount] = createSignal<number | null>(null);8182  function refreshFromBuffer() {83    setScanned(buffer.size());84    const ctx = buffer.getContext();85    if (ctx) {86      setDataShards(ctx.dataShards);87      setVerifyCode(ctx.verifyCode);88    }89    if (90      buffer.isReady() &&91      (phase() === "scanning" || phase() === "pdf-import" || phase() === "pdf-shortfall")92    ) {93      setPhase("ready");94      setHint("scan complete. enter your master password to restore.");95      setPdfShortfall(null);96      // Stop the camera the instant we have enough codes — no reason to keep97      // the green light on while the user types their passphrase.98      if (scanner) {99        scanner.stop();100        scanner = null;101      }102    } else if (phase() === "scanning") {103      const ds = ctx?.dataShards;104      if (ds) {105        const remaining = Math.max(ds - buffer.size(), 0);106        setHint(107          remaining > 0108            ? `${remaining} more ${remaining === 1 ? "code" : "codes"} needed`109            : "almost there…",110        );111      }112    }113  }114115  function explainScanReason(reason: string): string {116    switch (reason) {117      case "foreign_codex":118        return "that code belongs to a different Codex.";119      case "bad_integrity":120        return "a code's checksum failed — try again.";121      case "duplicate":122        return ""; // not surfaced — duplicates are normal as the user pans123      case "parse_error":124        return "could not read that code.";125      default:126        return "";127    }128  }129130  async function handleScan(raw: string) {131    const parsed = parseRawScan(raw);132    if ("error" in parsed) {133      // parseRawScan failures are usually a non-Peach Aztec code or a corrupt134      // frame; quietly ignore so the scanner keeps running.135      return;136    }137138    const result = await buffer.add(parsed);139    refreshFromBuffer();140    if (!result.accepted && result.reason) {141      const msg = explainScanReason(result.reason);142      if (msg) {143        setScanWarning(msg);144        // Auto-clear so the warning doesn't linger after the user moves on.145        setTimeout(() => setScanWarning(null), 2500);146      }147    }148  }149150  function handleScannerError(err: Error) {151    setCameraError(152      err.name === "NotAllowedError"153        ? "camera access was denied. allow camera permission and reopen this screen."154        : err.message || "camera failed to start.",155    );156  }157158  async function startCameraScan() {159    setPhase("scanning");160    setCameraError(null);161    setPdfShortfall(null);162    // Solid hasn't rendered the <video> element yet — defer until next tick.163    await Promise.resolve();164    if (!videoEl) return;165    try {166      scanner = await startScanner({167        videoEl,168        onScan: (text) => void handleScan(text),169        onError: (err) => handleScannerError(err),170      });171    } catch (err) {172      handleScannerError(err instanceof Error ? err : new Error(String(err)));173    }174  }175176  // The Chrome action popup dismisses the moment the OS file picker steals177  // focus, which stranded users mid-import. From the popup we instead open178  // the restore view in a standalone window (chrome.windows.create) and179  // let that window own the file dialog. Within the detached window, or in180  // any non-Chromium context that lacks chrome.windows, we trigger the181  // input directly.182  async function openPdfPicker() {183    if (autoPickPdf) {184      pdfFileInput?.click();185      return;186    }187    const canDetach =188      typeof chrome !== "undefined" &&189      typeof chrome.windows?.create === "function" &&190      typeof chrome.runtime?.getURL === "function";191    if (!canDetach) {192      pdfFileInput?.click();193      return;194    }195    try {196      // Use the same HTML entrypoint the action popup uses. Reading it197      // from chrome.runtime.getManifest().action.default_popup keeps the198      // path correct across builds (Chrome vs Firefox manifest variants)199      // without hard-coding "src/popup/index.html".200      const popupHtml =201        chrome.runtime.getManifest().action?.default_popup ?? "src/popup/index.html";202      // Match the popup's intrinsic 320×520 body. Chrome's popup-type203      // window has near-zero side chrome on macOS, so width:320 lines up204      // with the popup body and avoids the black band on the right that205      // any wider window produces. Height gets ~30pt for the title bar.206      await chrome.windows.create({207        url: chrome.runtime.getURL(`${popupHtml}?codex=pdf`),208        type: "popup",209        width: 320,210        height: 550,211      });212      window.close();213    } catch (err) {214      console.warn("[codex] failed to detach popup for PDF import:", err);215      pdfFileInput?.click();216    }217  }218219  async function handlePDFSelected(e: Event) {220    const input = e.currentTarget as HTMLInputElement;221    const file = input.files?.[0];222    // Reset the input so the same file can be re-selected after an error.223    input.value = "";224    if (!file) return;225226    if (!file.type.includes("pdf") && !file.name.toLowerCase().endsWith(".pdf")) {227      setPdfError("please select a Peach Codex PDF file.");228      return;229    }230231    setPhase("pdf-import");232    setPdfProgress(null);233    setPdfError(null);234    setPdfShortfall(null);235236    try {237      // Dynamic import so the popup never pulls pdf.js into the camera-only238      // path — keeps the initial bundle small.239      const { importCodexPDF } = await import("../codex/pdf-import");240      const result = await importCodexPDF(file, (page, total) => {241        setPdfProgress({ page, total });242      });243244      if (result.envelopes.length === 0) {245        setPdfError(246          "no Codex codes found in this PDF. make sure you're selecting a Peach Codex PDF, not a different document.",247        );248        setPhase("choose");249        return;250      }251252      for (const envelope of result.envelopes) {253        await buffer.add(envelope);254      }255      refreshFromBuffer();256257      if (!buffer.isReady()) {258        const stripes = buffer.stripeReadiness();259        const ready = stripes.filter((s) => s.isReady).length;260        const missing = stripes.reduce(261          (sum, s) => sum + Math.max(0, s.required - s.found),262          0,263        );264        setPdfShortfall({265          found: buffer.size(),266          missing,267          ready,268          total: stripes.length,269        });270        setPhase("pdf-shortfall");271        return;272      }273    } catch (err) {274      setPdfError(275        `failed to read PDF: ${err instanceof Error ? err.message : String(err)}`,276      );277      setPhase("choose");278    }279  }280281  function retryPdfImport() {282    setPdfShortfall(null);283    void openPdfPicker();284  }285286  // Detect whether we are running inside a chrome.windows.create() window287  // that was opened specifically to handle the PDF picker. The action288  // popup dismisses on focus loss, so the file dialog tears it down. When289  // routed via ?codex=pdf we know we are in a survivable window and can290  // safely auto-trigger the picker on mount.291  const autoPickPdf = (() => {292    try {293      return new URLSearchParams(window.location.search).get("codex") === "pdf";294    } catch {295      return false;296    }297  })();298299  onMount(() => {300    if (autoPickPdf) {301      // Tiny delay so the click happens after the SolidJS mount settles302      // and the hidden <input> is in the DOM.303      setTimeout(() => pdfFileInput?.click(), 50);304    }305  });306307  onCleanup(() => {308    if (scanner) {309      scanner.stop();310      scanner = null;311    }312    // `scanner.stop()` calls reader.reset(), which tears down the313    // MediaStream attached to the <video> element. Defensive: clear srcObject314    // in case the library leaves a reference behind after reset (observed in315    // older @zxing/library versions).316    if (videoEl?.srcObject) {317      const stream = videoEl.srcObject as MediaStream;318      stream.getTracks().forEach((t) => t.stop());319      videoEl.srcObject = null;320    }321  });322323  function explainRestoreError(error: string | undefined): string {324    if (!error) return "restoration failed. please try again.";325    if (error.includes("WRONG_PASSPHRASE") || error.includes("wrong"))326      return "wrong master password. try again.";327    if (error.includes("INVALID_VAULT_BLOB"))328      return "the reconstructed vault is unreadable. please re-scan the Codex.";329    if (error.includes("FINGERPRINT_MISMATCH"))330      return "vault integrity check failed. please re-scan the Codex.";331    return error;332  }333334  async function handleRestore() {335    if (phase() === "restoring") return;336    const pw = passphrase().trim();337    if (!pw) {338      setRestoreError("enter your master password.");339      return;340    }341342    setPhase("restoring");343    setRestoreError(null);344345    let payload = pendingPayload();346    if (!payload) {347      try {348        payload = await reconstructAndVerify(buffer);349        setPendingPayload(payload);350      } catch (err) {351        const message =352          err instanceof Error353            ? err.message354            : "the scanned codes could not be reassembled.";355        setRestoreError(message);356        setPhase("ready");357        return;358      }359    }360361    const res = (await sendMessage({362      type: "RESTORE_FROM_CODEX",363      payload: {364        vaultBlob: payload.vaultBlob,365        timestamp: payload.timestamp,366        verifyCode: payload.verifyCode,367        vaultFingerprint: payload.vaultFingerprint,368        entryCount: payload.entryCount,369        masterPassphrase: pw,370      },371    })) as {372      ok: boolean;373      data?: { entryCount: number; verifyCode: string };374      error?: string;375    };376377    if (res.ok && res.data) {378      setRestoredCount(res.data.entryCount);379      setPhase("success");380      if (scanner) {381        scanner.stop();382        scanner = null;383      }384      setTimeout(() => props.onRestoreSuccess(), 1500);385    } else {386      setRestoreError(explainRestoreError(res.error));387      setPhase("ready");388    }389  }390391  function progressPercent(): number {392    const stripes = buffer.stripeReadiness();393    if (stripes.length > 0) {394      const worst = stripes.reduce((min, s) => (s.found < min.found ? s : min), stripes[0]!);395      if (worst.required > 0) {396        return Math.min(100, Math.round((worst.found / worst.required) * 100));397      }398    }399    const ds = dataShards();400    if (!ds || ds <= 0) return 0;401    return Math.min(100, Math.round((scanned() / ds) * 100));402  }403404  function stripeProgressSummary():405    | { ready: number; total: number; worstFound: number; worstRequired: number }406    | null {407    const stripes = buffer.stripeReadiness();408    if (stripes.length === 0) return null;409    const ready = stripes.filter((s) => s.isReady).length;410    const worst = stripes.reduce((min, s) => (s.found < min.found ? s : min), stripes[0]!);411    return {412      ready,413      total: stripes.length,414      worstFound: worst.found,415      worstRequired: worst.required,416    };417  }418419  return (420    <div class="peach-overlay-view ov-enter-right" style="display:flex">421      <div class="peach-overlay-header">422        <button423          class="peach-btn peach-btn--ghost peach-btn--sm peach-icon-btn"424          onClick={props.onBack}425          aria-label="Back"426        >427          <svg width="7" height="12" viewBox="0 0 7 12" fill="none"428            stroke="currentColor" stroke-width="1.1"429            stroke-linecap="round" stroke-linejoin="round">430            <path d="M6 1L1 6L6 11" />431          </svg>432        </button>433        <span class="peach-overlay-title">restore from codex</span>434        <div class="peach-overlay-spacer"></div>435      </div>436437      <div class="peach-settings-body peach-codex-body">438        <Show when={phase() === "choose"}>439          <div class="peach-codex-restore-choose">440            <h2 class="peach-codex-restore-headline">restore from codex.</h2>441            <p class="peach-codex-restore-sub">442              how do you have your codex?443            </p>444445            <button446              class="peach-codex-restore-option"447              onClick={() => void startCameraScan()}448            >449              <div class="peach-codex-restore-option-icon">450                <svg width="22" height="22" viewBox="0 0 24 24" fill="none"451                  stroke="currentColor" stroke-width="1.5"452                  stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">453                  <path d="M3 8a2 2 0 0 1 2-2h2l1.5-2h7L17 6h2a2 2 0 0 1 2 2v10a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8z" />454                  <circle cx="12" cy="13" r="3.5" />455                </svg>456              </div>457              <div class="peach-codex-restore-option-content">458                <span class="peach-codex-restore-option-title">459                  scan printed pages460                </span>461                <span class="peach-codex-restore-option-sub">462                  point your camera at each code463                </span>464              </div>465            </button>466467            <button468              class="peach-codex-restore-option"469              onClick={() => void openPdfPicker()}470            >471              <div class="peach-codex-restore-option-icon">472                <svg width="22" height="22" viewBox="0 0 24 24" fill="none"473                  stroke="currentColor" stroke-width="1.5"474                  stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">475                  <path d="M14 3H7a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h10a2 2 0 0 0 2-2V8z" />476                  <path d="M14 3v5h5" />477                  <path d="M9 14h6" />478                  <path d="M9 17h4" />479                </svg>480              </div>481              <div class="peach-codex-restore-option-content">482                <span class="peach-codex-restore-option-title">483                  import PDF file484                </span>485                <span class="peach-codex-restore-option-sub">486                  select your codex PDF from a USB drive or folder487                </span>488              </div>489            </button>490491            <p class="peach-codex-restore-guidance">492              have both the printed pages and the PDF? the PDF import is493              faster and more reliable — use it if you can.494            </p>495496            <Show when={pdfError()}>497              <p class="peach-hint peach-hint-error peach-codex-restore-guidance">498                {pdfError()}499              </p>500            </Show>501          </div>502        </Show>503504        <input505          ref={(el) => (pdfFileInput = el)}506          type="file"507          accept=".pdf,application/pdf"508          style={{ display: "none" }}509          onChange={(e) => void handlePDFSelected(e)}510        />511512        <Show when={phase() === "pdf-shortfall"}>513          <div class="peach-settings-group peach-codex-pdf-shortfall">514            <p class="peach-codex-restore-headline">pdf import needs another pass.</p>515            <p class="peach-codex-pdf-shortfall-copy">516              The PDF decoded {pdfShortfall()?.found ?? 0} codes, but {pdfShortfall()?.missing ?? 0} remained unreadable.517              {pdfShortfall()?.ready === pdfShortfall()?.total518                ? " all stripes are ready now."519                : ` ${pdfShortfall()?.ready ?? 0} of ${pdfShortfall()?.total ?? 0} stripes are ready.`}520            </p>521            <p class="peach-codex-pdf-shortfall-copy">522              try importing the PDF again to fill the gaps, or switch to camera scanning if it keeps failing.523            </p>524            <div class="peach-codex-pdf-shortfall-actions">525              <button526                class="peach-btn peach-btn--accent peach-btn--md"527                onClick={() => retryPdfImport()}528              >529                try PDF again530              </button>531              <button532                class="peach-btn peach-btn--ghost peach-btn--md"533                onClick={() => void startCameraScan()}534              >535                use camera536              </button>537            </div>538          </div>539        </Show>540541        <Show542          when={543            phase() === "scanning" ||544            phase() === "ready" ||545            phase() === "restoring"546          }547        >548          <div class="peach-codex-scanner">549            <video550              ref={(el) => (videoEl = el)}551              class="peach-codex-video"552              autoplay553              playsinline554              muted555            />556            <Show when={cameraError()}>557              <div class="peach-codex-camera-overlay">558                <p class="peach-hint peach-hint-error">{cameraError()}</p>559              </div>560            </Show>561          </div>562        </Show>563564        <Show when={phase() === "pdf-import"}>565          <div class="peach-settings-group peach-codex-pdf-import">566            <p class="peach-codex-restore-headline">reading your codex…</p>567            <Show when={pdfProgress()}>568              {(p) => (569                <>570                  <div class="peach-codex-progress-track">571                    <div572                      class="peach-codex-progress-fill"573                      style={{574                        width: `${Math.round((p().page / p().total) * 100)}%`,575                      }}576                    />577                  </div>578                  <p class="peach-codex-progress-label">579                    page {p().page} of {p().total}580                  </p>581                </>582              )}583            </Show>584          </div>585        </Show>586587        <Show588          when={589            phase() === "scanning" ||590            phase() === "ready" ||591            phase() === "restoring"592          }593        >594          <div class="peach-settings-group peach-codex-progress-group">595            <div class="peach-codex-progress-track">596              <div597                class="peach-codex-progress-fill"598                style={{ width: `${progressPercent()}%` }}599              />600            </div>601            <p class="peach-codex-progress-label">602              <Show when={stripeProgressSummary()} fallback={<span>{scanned()} codes scanned</span>}>603                {(summary) => (604                  <span>605                    {summary().ready} / {summary().total} stripes ready606                  </span>607                )}608              </Show>609              <Show when={verifyCode()}>610                <span class="peach-codex-verify-tag">{verifyCode()}</span>611              </Show>612            </p>613            <Show when={stripeProgressSummary()}>614              {(summary) => (615                <p class="peach-codex-hint peach-codex-worst-stripe">616                  least-ready stripe: {summary().worstFound} / {summary().worstRequired} codes617                </p>618              )}619            </Show>620            <p class="peach-codex-hint">{hint()}</p>621            <Show when={scanWarning()}>622              <p class="peach-hint peach-hint--warning peach-codex-warning">623                {scanWarning()}624              </p>625            </Show>626          </div>627        </Show>628629        <Show when={phase() === "ready" || phase() === "restoring"}>630          <div class="peach-settings-group peach-codex-passphrase-group">631            <label class="peach-settings-label" for="codex-passphrase">632              master password633            </label>634            <input635              id="codex-passphrase"636              type="password"637              class="peach-underline-input"638              autocomplete="current-password"639              autocorrect="off"640              autocapitalize="none"641              spellcheck={false}642              disabled={phase() === "restoring"}643              value={passphrase()}644              onInput={(e) => {645                setPassphrase((e.target as HTMLInputElement).value);646                if (restoreError()) setRestoreError(null);647              }}648              onKeyDown={(e) => {649                if (e.key === "Enter" && phase() === "ready") {650                  void handleRestore();651                }652              }}653            />654            <Show when={restoreError()}>655              <p class="peach-hint peach-hint-error">{restoreError()}</p>656            </Show>657            <button658              class="peach-btn peach-btn--accent peach-btn--md peach-btn--full"659              disabled={phase() === "restoring" || passphrase().length === 0}660              onClick={() => void handleRestore()}661            >662              {phase() === "restoring" ? "restoring…" : "restore vault"}663            </button>664          </div>665        </Show>666667        <Show when={phase() === "success"}>668          <div class="peach-settings-group peach-codex-done">669            <p class="peach-hint peach-hint--success">✓ vault restored</p>670            <p class="peach-codex-meta">671              {restoredCount()}{" "}672              {restoredCount() === 1 ? "entry" : "entries"} recovered.673            </p>674            <p class="peach-codex-footnote">675              your codex has been read and your vault is unlocked.676            </p>677          </div>678        </Show>679680        <Show when={phase() !== "success"}>681          <button682            class="peach-btn peach-btn--ghost peach-btn--sm peach-btn--full peach-codex-cancel-btn"683            onClick={props.onBack}684          >685            cancel686          </button>687        </Show>688      </div>689    </div>690  );691}