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  | "ready"37  | "restoring"38  | "success"39  | "error";4041export function CodexRestoreView(props: CodexRestoreViewProps) {42  // The buffer is intentionally not stored in a signal — its identity is43  // stable across the lifetime of the view and we read it through the44  // `size()`/`isReady()` methods. We mirror its observable state into45  // signals so Solid can re-render.46  const buffer = new ChunkBuffer();47  let videoEl: HTMLVideoElement | undefined;48  let scanner: ScannerHandle | null = null;49  let pdfFileInput: HTMLInputElement | undefined;5051  const [phase, setPhase] = createSignal<Phase>("choose");52  const [scanned, setScanned] = createSignal(0);53  const [totalShards, setTotalShards] = createSignal<number | null>(null);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  // Hold the reconstructed payload between the integrity check and the SW67  // call so the user can re-enter the passphrase on a wrong-password failure68  // without rescanning every code.69  const [pendingPayload, setPendingPayload] = createSignal<CodexPayload | null>(70    null,71  );72  const [passphrase, setPassphrase] = createSignal("");73  const [restoreError, setRestoreError] = createSignal<string | null>(null);74  const [restoredCount, setRestoredCount] = createSignal<number | null>(null);7576  function refreshFromBuffer() {77    setScanned(buffer.size());78    const ctx = buffer.getContext();79    if (ctx) {80      setTotalShards(ctx.total);81      setDataShards(ctx.dataShards);82      setVerifyCode(ctx.verifyCode);83    }84    if (buffer.isReady() && (phase() === "scanning" || phase() === "pdf-import")) {85      setPhase("ready");86      setHint("scan complete. enter your master password to restore.");87      // Stop the camera the instant we have enough codes — no reason to keep88      // the green light on while the user types their passphrase.89      if (scanner) {90        scanner.stop();91        scanner = null;92      }93    } else if (phase() === "scanning") {94      const ds = ctx?.dataShards;95      if (ds) {96        const remaining = Math.max(ds - buffer.size(), 0);97        setHint(98          remaining > 099            ? `${remaining} more ${remaining === 1 ? "code" : "codes"} needed`100            : "almost there…",101        );102      }103    }104  }105106  function explainScanReason(reason: string): string {107    switch (reason) {108      case "foreign_codex":109        return "that code belongs to a different Codex.";110      case "bad_integrity":111        return "a code's checksum failed — try again.";112      case "duplicate":113        return ""; // not surfaced — duplicates are normal as the user pans114      case "parse_error":115        return "could not read that code.";116      default:117        return "";118    }119  }120121  async function handleScan(raw: string) {122    const parsed = parseRawScan(raw);123    if ("error" in parsed) {124      // parseRawScan failures are usually a non-Peach Aztec code or a corrupt125      // frame; quietly ignore so the scanner keeps running.126      return;127    }128129    const result = await buffer.add(parsed);130    refreshFromBuffer();131    if (!result.accepted && result.reason) {132      const msg = explainScanReason(result.reason);133      if (msg) {134        setScanWarning(msg);135        // Auto-clear so the warning doesn't linger after the user moves on.136        setTimeout(() => setScanWarning(null), 2500);137      }138    }139  }140141  function handleScannerError(err: Error) {142    setCameraError(143      err.name === "NotAllowedError"144        ? "camera access was denied. allow camera permission and reopen this screen."145        : err.message || "camera failed to start.",146    );147  }148149  async function startCameraScan() {150    setPhase("scanning");151    setCameraError(null);152    // Solid hasn't rendered the <video> element yet — defer until next tick.153    await Promise.resolve();154    if (!videoEl) return;155    try {156      scanner = await startScanner({157        videoEl,158        onScan: (text) => void handleScan(text),159        onError: (err) => handleScannerError(err),160      });161    } catch (err) {162      handleScannerError(err instanceof Error ? err : new Error(String(err)));163    }164  }165166  // The Chrome action popup dismisses the moment the OS file picker steals167  // focus, which stranded users mid-import. From the popup we instead open168  // the restore view in a standalone window (chrome.windows.create) and169  // let that window own the file dialog. Within the detached window, or in170  // any non-Chromium context that lacks chrome.windows, we trigger the171  // input directly.172  async function openPdfPicker() {173    if (autoPickPdf) {174      pdfFileInput?.click();175      return;176    }177    const canDetach =178      typeof chrome !== "undefined" &&179      typeof chrome.windows?.create === "function" &&180      typeof chrome.runtime?.getURL === "function";181    if (!canDetach) {182      pdfFileInput?.click();183      return;184    }185    try {186      // Use the same HTML entrypoint the action popup uses. Reading it187      // from chrome.runtime.getManifest().action.default_popup keeps the188      // path correct across builds (Chrome vs Firefox manifest variants)189      // without hard-coding "src/popup/index.html".190      const popupHtml =191        chrome.runtime.getManifest().action?.default_popup ?? "src/popup/index.html";192      // Match the popup's intrinsic 320×520 body. Chrome's popup-type193      // window has near-zero side chrome on macOS, so width:320 lines up194      // with the popup body and avoids the black band on the right that195      // any wider window produces. Height gets ~30pt for the title bar.196      await chrome.windows.create({197        url: chrome.runtime.getURL(`${popupHtml}?codex=pdf`),198        type: "popup",199        width: 320,200        height: 550,201      });202      window.close();203    } catch (err) {204      console.warn("[codex] failed to detach popup for PDF import:", err);205      pdfFileInput?.click();206    }207  }208209  async function handlePDFSelected(e: Event) {210    const input = e.currentTarget as HTMLInputElement;211    const file = input.files?.[0];212    // Reset the input so the same file can be re-selected after an error.213    input.value = "";214    if (!file) return;215216    if (!file.type.includes("pdf") && !file.name.toLowerCase().endsWith(".pdf")) {217      setPdfError("please select a Peach Codex PDF file.");218      return;219    }220221    setPhase("pdf-import");222    setPdfProgress(null);223    setPdfError(null);224225    try {226      // Dynamic import so the popup never pulls pdf.js into the camera-only227      // path — keeps the initial bundle small.228      const { importCodexPDF } = await import("../codex/pdf-import");229      const result = await importCodexPDF(file, (page, total) => {230        setPdfProgress({ page, total });231      });232233      if (result.envelopes.length === 0) {234        setPdfError(235          "no Codex codes found in this PDF. make sure you're selecting a Peach Codex PDF, not a different document.",236        );237        setPhase("choose");238        return;239      }240241      for (const envelope of result.envelopes) {242        await buffer.add(envelope);243      }244      refreshFromBuffer();245246      if (!buffer.isReady()) {247        // Some codes are missing — let the user supplement with the camera.248        setPdfError(249          `found ${buffer.size()}${250            result.totalExpected ? ` of ${result.totalExpected}` : ""251          } codes. the PDF may be incomplete — you can scan the remaining codes with your camera.`,252        );253        await startCameraScan();254      }255    } catch (err) {256      setPdfError(257        `failed to read PDF: ${err instanceof Error ? err.message : String(err)}`,258      );259      setPhase("choose");260    }261  }262263  // Detect whether we are running inside a chrome.windows.create() window264  // that was opened specifically to handle the PDF picker. The action265  // popup dismisses on focus loss, so the file dialog tears it down. When266  // routed via ?codex=pdf we know we are in a survivable window and can267  // safely auto-trigger the picker on mount.268  const autoPickPdf = (() => {269    try {270      return new URLSearchParams(window.location.search).get("codex") === "pdf";271    } catch {272      return false;273    }274  })();275276  onMount(() => {277    if (autoPickPdf) {278      // Tiny delay so the click happens after the SolidJS mount settles279      // and the hidden <input> is in the DOM.280      setTimeout(() => pdfFileInput?.click(), 50);281    }282  });283284  onCleanup(() => {285    if (scanner) {286      scanner.stop();287      scanner = null;288    }289    // `scanner.stop()` calls reader.reset(), which tears down the290    // MediaStream attached to the <video> element. Defensive: clear srcObject291    // in case the library leaves a reference behind after reset (observed in292    // older @zxing/library versions).293    if (videoEl?.srcObject) {294      const stream = videoEl.srcObject as MediaStream;295      stream.getTracks().forEach((t) => t.stop());296      videoEl.srcObject = null;297    }298  });299300  function explainRestoreError(error: string | undefined): string {301    if (!error) return "restoration failed. please try again.";302    if (error.includes("WRONG_PASSPHRASE") || error.includes("wrong"))303      return "wrong master password. try again.";304    if (error.includes("INVALID_VAULT_BLOB"))305      return "the reconstructed vault is unreadable. please re-scan the Codex.";306    if (error.includes("FINGERPRINT_MISMATCH"))307      return "vault integrity check failed. please re-scan the Codex.";308    return error;309  }310311  async function handleRestore() {312    if (phase() === "restoring") return;313    const pw = passphrase().trim();314    if (!pw) {315      setRestoreError("enter your master password.");316      return;317    }318319    setPhase("restoring");320    setRestoreError(null);321322    let payload = pendingPayload();323    if (!payload) {324      try {325        payload = await reconstructAndVerify(buffer);326        setPendingPayload(payload);327      } catch (err) {328        const message =329          err instanceof Error330            ? err.message331            : "the scanned codes could not be reassembled.";332        setRestoreError(message);333        setPhase("ready");334        return;335      }336    }337338    const res = (await sendMessage({339      type: "RESTORE_FROM_CODEX",340      payload: {341        vaultBlob: payload.vaultBlob,342        timestamp: payload.timestamp,343        verifyCode: payload.verifyCode,344        vaultFingerprint: payload.vaultFingerprint,345        entryCount: payload.entryCount,346        masterPassphrase: pw,347      },348    })) as {349      ok: boolean;350      data?: { entryCount: number; verifyCode: string };351      error?: string;352    };353354    if (res.ok && res.data) {355      setRestoredCount(res.data.entryCount);356      setPhase("success");357      if (scanner) {358        scanner.stop();359        scanner = null;360      }361      setTimeout(() => props.onRestoreSuccess(), 1500);362    } else {363      setRestoreError(explainRestoreError(res.error));364      setPhase("ready");365    }366  }367368  function progressPercent(): number {369    const ds = dataShards();370    if (!ds || ds <= 0) return 0;371    return Math.min(100, Math.round((scanned() / ds) * 100));372  }373374  return (375    <div class="peach-overlay-view ov-enter-right" style="display:flex">376      <div class="peach-overlay-header">377        <button378          class="peach-btn peach-btn--ghost peach-btn--sm peach-icon-btn"379          onClick={props.onBack}380          aria-label="Back"381        >382          <svg width="7" height="12" viewBox="0 0 7 12" fill="none"383            stroke="currentColor" stroke-width="1.1"384            stroke-linecap="round" stroke-linejoin="round">385            <path d="M6 1L1 6L6 11" />386          </svg>387        </button>388        <span class="peach-overlay-title">restore from codex</span>389        <div class="peach-overlay-spacer"></div>390      </div>391392      <div class="peach-settings-body peach-codex-body">393        <Show when={phase() === "choose"}>394          <div class="peach-codex-restore-choose">395            <h2 class="peach-codex-restore-headline">restore from codex.</h2>396            <p class="peach-codex-restore-sub">397              how do you have your codex?398            </p>399400            <button401              class="peach-codex-restore-option"402              onClick={() => void startCameraScan()}403            >404              <div class="peach-codex-restore-option-icon">405                <svg width="22" height="22" viewBox="0 0 24 24" fill="none"406                  stroke="currentColor" stroke-width="1.5"407                  stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">408                  <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" />409                  <circle cx="12" cy="13" r="3.5" />410                </svg>411              </div>412              <div class="peach-codex-restore-option-content">413                <span class="peach-codex-restore-option-title">414                  scan printed pages415                </span>416                <span class="peach-codex-restore-option-sub">417                  point your camera at each code418                </span>419              </div>420            </button>421422            <button423              class="peach-codex-restore-option"424              onClick={() => void openPdfPicker()}425            >426              <div class="peach-codex-restore-option-icon">427                <svg width="22" height="22" viewBox="0 0 24 24" fill="none"428                  stroke="currentColor" stroke-width="1.5"429                  stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">430                  <path d="M14 3H7a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h10a2 2 0 0 0 2-2V8z" />431                  <path d="M14 3v5h5" />432                  <path d="M9 14h6" />433                  <path d="M9 17h4" />434                </svg>435              </div>436              <div class="peach-codex-restore-option-content">437                <span class="peach-codex-restore-option-title">438                  import PDF file439                </span>440                <span class="peach-codex-restore-option-sub">441                  select your codex PDF from a USB drive or folder442                </span>443              </div>444            </button>445446            <input447              ref={(el) => (pdfFileInput = el)}448              type="file"449              accept=".pdf,application/pdf"450              style={{ display: "none" }}451              onChange={(e) => void handlePDFSelected(e)}452            />453454            <p class="peach-codex-restore-guidance">455              have both the printed pages and the PDF? the PDF import is456              faster and more reliable — use it if you can.457            </p>458459            <Show when={pdfError()}>460              <p class="peach-hint peach-hint-error peach-codex-restore-guidance">461                {pdfError()}462              </p>463            </Show>464          </div>465        </Show>466467        <Show468          when={469            phase() === "scanning" ||470            phase() === "ready" ||471            phase() === "restoring"472          }473        >474          <div class="peach-codex-scanner">475            <video476              ref={(el) => (videoEl = el)}477              class="peach-codex-video"478              autoplay479              playsinline480              muted481            />482            <Show when={cameraError()}>483              <div class="peach-codex-camera-overlay">484                <p class="peach-hint peach-hint-error">{cameraError()}</p>485              </div>486            </Show>487          </div>488        </Show>489490        <Show when={phase() === "pdf-import"}>491          <div class="peach-settings-group peach-codex-pdf-import">492            <p class="peach-codex-restore-headline">reading your codex…</p>493            <Show when={pdfProgress()}>494              {(p) => (495                <>496                  <div class="peach-codex-progress-track">497                    <div498                      class="peach-codex-progress-fill"499                      style={{500                        width: `${Math.round((p().page / p().total) * 100)}%`,501                      }}502                    />503                  </div>504                  <p class="peach-codex-progress-label">505                    page {p().page} of {p().total}506                  </p>507                </>508              )}509            </Show>510          </div>511        </Show>512513        <Show514          when={515            phase() === "scanning" ||516            phase() === "ready" ||517            phase() === "restoring"518          }519        >520          <div class="peach-settings-group peach-codex-progress-group">521            <div class="peach-codex-progress-track">522              <div523                class="peach-codex-progress-fill"524                style={{ width: `${progressPercent()}%` }}525              />526            </div>527            <p class="peach-codex-progress-label">528              <Show529                when={totalShards() !== null}530                fallback={<span>{scanned()} codes scanned</span>}531              >532                <span>533                  {scanned()} / {dataShards()} codes534                </span>535              </Show>536              <Show when={verifyCode()}>537                <span class="peach-codex-verify-tag">538                  {verifyCode()}539                </span>540              </Show>541            </p>542            <p class="peach-codex-hint">{hint()}</p>543            <Show when={scanWarning()}>544              <p class="peach-hint peach-hint--warning peach-codex-warning">545                {scanWarning()}546              </p>547            </Show>548          </div>549        </Show>550551        <Show when={phase() === "ready" || phase() === "restoring"}>552          <div class="peach-settings-group peach-codex-passphrase-group">553            <label class="peach-settings-label" for="codex-passphrase">554              master password555            </label>556            <input557              id="codex-passphrase"558              type="password"559              class="peach-underline-input"560              autocomplete="current-password"561              autocorrect="off"562              autocapitalize="none"563              spellcheck={false}564              disabled={phase() === "restoring"}565              value={passphrase()}566              onInput={(e) => {567                setPassphrase((e.target as HTMLInputElement).value);568                if (restoreError()) setRestoreError(null);569              }}570              onKeyDown={(e) => {571                if (e.key === "Enter" && phase() === "ready") {572                  void handleRestore();573                }574              }}575            />576            <Show when={restoreError()}>577              <p class="peach-hint peach-hint-error">{restoreError()}</p>578            </Show>579            <button580              class="peach-btn peach-btn--accent peach-btn--md peach-btn--full"581              disabled={phase() === "restoring" || passphrase().length === 0}582              onClick={() => void handleRestore()}583            >584              {phase() === "restoring" ? "restoring…" : "restore vault"}585            </button>586          </div>587        </Show>588589        <Show when={phase() === "success"}>590          <div class="peach-settings-group peach-codex-done">591            <p class="peach-hint peach-hint--success">✓ vault restored</p>592            <p class="peach-codex-meta">593              {restoredCount()}{" "}594              {restoredCount() === 1 ? "entry" : "entries"} recovered.595            </p>596            <p class="peach-codex-footnote">597              your codex has been read and your vault is unlocked.598            </p>599          </div>600        </Show>601602        <Show when={phase() !== "success"}>603          <button604            class="peach-btn peach-btn--ghost peach-btn--sm peach-btn--full peach-codex-cancel-btn"605            onClick={props.onBack}606          >607            cancel608          </button>609        </Show>610      </div>611    </div>612  );613}