@pdf-viewer/react/dist/utils/hooks/useLoadPdf.js

The PDF Viewer component for React and Next.js

import { useState as a, useRef as N, useEffect as C } from "react";
import * as S from "pdfjs-dist";
import { getThumbnailViewport as U } from "../getThumbnailViewport.js";
import { useConfigContext as V } from "../../contexts/ConfigContext.js";
import { useDocumentPasswordContext as j } from "../../contexts/DocumentPasswordContext.js";
const z = (l, o, I = {}) => {
  const [r, q] = a(), { workerUrlAdded: k } = V(), [y, x] = a(/* @__PURE__ */ new Map()), i = N(), [R, f] = a(0), [m, L] = a(!1), { password: d, passwordError: T, setPasswordError: g, passwordRequired: P, setPasswordRequired: c } = j(), { onLoadError: p, onLoaded: w } = I;
  return C(() => {
    if (!k || !l)
      return;
    f(0), i.current = Date.now();
    const t = i.current, E = {
      url: l,
      cMapPacked: (o == null ? void 0 : o.isCompressed) ?? !0,
      ...(o == null ? void 0 : o.url) && { cMapUrl: o.url },
      ...d && { password: d }
    }, n = S.getDocument(E);
    n.onProgress = (s) => {
      if (t === i.current) {
        const { loaded: b, total: u } = s, D = u ? Math.min(100, Math.round(b / u * 100)) : 0;
        f(D);
      }
    }, L(!0);
    const e = n.promise.then((s) => (t === i.current && (q(s), f(100)), w && w(s), c(!1), g(""), s)).catch((s) => {
      s instanceof Error && s.name === "PasswordException" ? (c(!0), g(s.message || "Password required")) : s instanceof Error && s.name === "InvalidPDFException" && d ? (c(!0), g("Incorrect password")) : p && p(s);
    }).finally(() => {
      L(!1);
    });
    return () => {
      e.finally(() => {
        n.destroy();
      });
    };
  }, [l, k, d, p, w]), C(() => {
    if (P)
      return;
    const t = /* @__PURE__ */ new Map();
    if (!r || m) {
      x(t);
      return;
    }
    const E = r.numPages, n = [];
    for (let e = 1; e <= E; e++) {
      const s = r.getPage(e);
      n.push(s);
    }
    Promise.all(n).then((e) => {
      e.map((s) => {
        const { thumbnailViewport: b, scale: u } = U(s);
        t.set(s.pageNumber, { page: s, thumbnailViewport: b, thumbnailScale: u });
      }), x(t);
    });
  }, [r, m, P]), {
    pdf: r,
    pages: y,
    loading: m,
    loadingProgress: R,
    passwordRequired: P,
    passwordError: T
  };
};
export {
  z as useLoadPdf
};