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Crawler base on SingleFile

Download site in single file automatically

目前为 2024-01-04 提交的版本。查看 最新版本。

// ==UserScript==
// @name              Crawler base on SingleFile
// @author            Mark
// @description       Download site in single file automatically
// @license           MIT
// @version           0.0.11
// @match             https://*/*
// @run-at            document-idle
// @grant GM.setValue
// @grant GM.getValue
// @grant GM.xmlHttpRequest
// @grant GM_registerMenuCommand
// @grant unsafeWindow
// @require     https://update.gf.qytechs.cn/scripts/483730/1305396/gm-fetch.js
// @connect *
// @noframes
// @namespace https://gf.qytechs.cn/users/1106595
// ==/UserScript==


const addScript = (url) => {
  const s = document.createElement("script");
  s.src = url;
  s.onerror = (evt) => {
    setTimeout(() => {addScript(url)}, 2000)
  }
  document.body.append(s);
};

const generateClientId = () =>
  (1e6 * Math.random()).toString(32).replace(".", "");
// main function
(function () {
  "use strict";

  addScript(
    "https://cdn.jsdelivr.net/gh/IKKEM-Lin/crawler-base-on-singlefile/config.js"
  );
  addScript(
    "https://cdn.jsdelivr.net/gh/IKKEM-Lin/crawler-base-on-singlefile/validator.js"
  );
  addScript(
    "https://cdn.jsdelivr.net/gh/gildas-lormeau/SingleFile-MV3/lib/single-file-bootstrap.js"
  );
  addScript(
    "https://cdn.jsdelivr.net/gh/gildas-lormeau/SingleFile-MV3/lib/single-file-hooks-frames.js"
  );
  addScript(
    "https://cdn.jsdelivr.net/gh/gildas-lormeau/SingleFile-MV3/lib/single-file-frames.js"
  );
  // Overwrite fetch function to bypass CORS
  window.unsafeWindow.fetch = async (...args) => {
    return await fetch(...args).catch(async (err) => {
      return await GM_fetch(...args);
    });
  };

  const downloadFile = (data, fileName) => {
    const a = document.createElement("a");
    document.body.appendChild(a);
    a.style = "display: none";
    const blob = new Blob([data], {
      type: "application/octet-stream",
    });
    const url = window.URL.createObjectURL(blob);
    a.href = url;
    a.download = fileName;
    a.click();
    window.URL.revokeObjectURL(url);
  };

  const sleep = (duration) => {
    return new Promise((res, rej) => {
      setTimeout(() => res(), duration * 1000);
    });
  };

  async function reload(waiting = 60, message = "") {
    console.warn(`%c${message}, reload ${waiting}s later`, printStyle);
    await sleep(waiting);
    location.reload();
  }

  function readFile(accept = "", multiple = false) {
    const inputEl = document.createElement("input");
    inputEl.setAttribute("type", "file");
    inputEl.setAttribute("accept", accept);
    inputEl.setAttribute("multiple", !!multiple);
    return new Promise((resolve, reject) => {
      inputEl.addEventListener("change", (e) => {
        resolve(multiple ? inputEl.files : inputEl.files[0]);
        window.removeEventListener("click", onWindowClick, true);
      });
      document.body.append(inputEl);
      inputEl.click();

      const onWindowClick = () => {
        if (!inputEl.value) {
          reject(new Error("用户取消选择"));
        }
        window.removeEventListener("click", onWindowClick, true);
      };
      setTimeout(() => {
        window.addEventListener("click", onWindowClick, true);
      }, 100);
    });
  }

  function AddImportBtn() {
    const btnWrapImport = document.createElement("div");
    btnWrapImport.id = "CRAWLER_ID";
    btnWrapImport.innerHTML = `<button style="padding: 4px 8px;position: fixed;bottom: 40%;right: 8px;border-radius: 4px;background-color: #224466;color: #fff;">Import</button>`;
    const importBtn = btnWrapImport.querySelector("button");
    importBtn.onclick = async () => {
      if (
        !window.confirm(
          "The data in browser will be clear up. Please make sure you have to do this !!!"
        )
      ) {
        return;
      }
      const file = await readFile(".json");
      const reader = new FileReader();

      reader.onload = (event) => {
        const json = JSON.parse(event.target.result);
        // console.log({json}, 'json')
        // this.importFromBackUp.bind(this)(json);
        if (
          json instanceof Array &&
          json.every((item) => item.doi && item.validator)
        ) {
          GM.setValue("tasks", json);
          location.reload();
        } else {
          alert(
            "Please upload json file like [{doi: string, validator: string, ...}]"
          );
        }
      };

      reader.readAsText(file);
    };
    document.body.appendChild(btnWrapImport);
  }

  function removeImportBtn() {
    const importBtn = document.getElementById("CRAWLER_ID");
    if (importBtn) {
      importBtn.parentElement.removeChild(importBtn);
    }
  }

  GM_registerMenuCommand("Download", async () => {
    const taskData = await GM.getValue("tasks");
    const waitingTasks = taskData.filter(
      (task) =>
        !task.downloaded &&
        task.validated === undefined &&
        validators[task.validator]
    );
    const now = new Date();
    downloadFile(
      JSON.stringify(taskData),
      `${now.getFullYear()}-${
        now.getMonth() + 1
      }-${now.getDate()}-${now.getHours()}${now.getMinutes()}${now.getSeconds()}-${
        taskData.length
      }-${taskData.length - waitingTasks.length}.json`
    );
  });

  const printStyle = "color: blue;background-color: #ccc;font-size: 20px";

  const checker = async () => {
    for (let i = 0; i<2; i++) {
      try {
        if (validators && DEFAULT_CONFIG) {
          return true;
        }
      } catch(err) {} finally{
        await sleep(5);
      }
    }
    return false;
  }

  async function start() {
    console.log(new Date());
    AddImportBtn();
    await sleep(7);
    addScript(
      "https://cdn.jsdelivr.net/gh/gildas-lormeau/SingleFile-MV3/lib/single-file.js"
    );
    const taskData = await GM.getValue("tasks");
    let tasks = taskData || [];

    const available = await checker();
    if (!available) {
      await reload(5, "Can not get validators or DEFAULT_CONFIG");
      return;
    }

    // find task which not downloaded and not validated before
    const waitingTasks = tasks.filter(
      (task) =>
        !task.downloaded &&
        task.validated === undefined &&
        validators[task.validator]
    );
    console.log(
      `%cTry to get tasks firstly(${waitingTasks.length} / ${tasks.length}):`,
      printStyle,
      tasks
    );

    // ---------------------------- Report progress -----------------------------------------------------

    let clientId = await GM.getValue("clientId");
    if (typeof clientId !== "string" || !clientId) {
      clientId = generateClientId();
      await GM.setValue("clientId", clientId);
    }
    const invalidatedTasks = tasks.filter((task) => task.validated === false);
    const doneTasks = tasks
      .filter((task) => task.downloaded)
      .sort((a, b) => (a.updateTime > b.updateTime ? -1 : 1));
    const previousDay = new Date().valueOf() - 24*3600*1000;
    const last24hDoneTasks = doneTasks.filter(task => task.updateTime > previousDay);
    const lastDoneTime = new Date(doneTasks[0]?.updateTime);
    const reportTip = `Last download time: ${lastDoneTime.toLocaleString()}
      Speed: ${last24hDoneTasks.length} / last 24h`;
    GM.xmlHttpRequest({
      url: "https://crawler-hit.deno.dev/api/update",
      method: "POST",
      headers: { "Content-Type": "application/json" },
      data: JSON.stringify({
        account: clientId,
        invalidate_count: invalidatedTasks.length,
        done_count: doneTasks.length,
        queue_count: waitingTasks.length,
        tip: reportTip,
      }),
    }).then((res) => {
      window.tts = res;
      console.log({ res });
    });

    if (!waitingTasks.length) {
      await reload(90, "No tasks waiting");
      return;
    }

    // -------------------------- Detect Cloudflare challenge -------------------------------------------------------
    await sleep(10);
    const currentTask = waitingTasks[0];
    const doi = currentTask.doi.replace("https://doi.org/", "").toLowerCase();
    const validator = validators[currentTask.validator];
    if (document.getElementById("challenge-form")) {
      console.log(`%cCloudflare challenge! ${currentTask.doi}`, printStyle);
      await sleep(20);
      currentTask.validated = false;
      currentTask.cloudflareBlock = true;
    }

    // --------------------------- Page validate ------------------------------------------------------
    if (
      !currentTask.cloudflareBlock &&
      !document.body.textContent.toLowerCase().includes(doi)
    ) {
      console.log(
        `%cURL not match, will redirect to ${currentTask.doi} 5s later`,
        printStyle
      );
      await sleep(5);
      location.href = currentTask.doi;
      return;
    }
    if (!currentTask.cloudflareBlock && validator(document)) {
      console.log(
        "%cValidate successfully! Downloading page...",
        printStyle,
        waitingTasks,
        tasks
      );
      removeImportBtn();
      // repair special page
      if (typeof documentFixer[currentTask.validator] === "function") {
        documentFixer[currentTask.validator](document);
      }
      try {
        const data = await singlefile.getPageData(DEFAULT_CONFIG);
        downloadFile(
          data.content,
          `${doi.replaceAll("/", "_")}.singlefile.html`
        );
        downloadFile(
          document.body.parentElement.outerHTML,
          `${doi.replaceAll("/", "_")}.html`
        );
        currentTask.downloaded = true;
        currentTask.validated = true;
        currentTask.updateTime = new Date().valueOf();
      } catch (error) {
        console.error(error);
        await reload(10, `singlefile error! ${currentTask.doi}`);
        return;
      }
    } else {
      console.log(`%cValidate failed! ${currentTask.doi}`, printStyle);
      currentTask.validated = false;
      currentTask.updateTime = new Date().valueOf();
    }

    await GM.setValue("tasks", tasks);

    // --------------------------- Prepare next task ------------------------------------------------------
    const nextTask = waitingTasks[1];
    if (nextTask) {
      console.log(
        `%cStart next task 10s later...`,
        printStyle,
        nextTask.doi,
        tasks
      );
      await sleep(10);
      location.href = nextTask.doi;
    } else {
      await reload(60, "No tasks waiting");
    }
  }

  start();
})();

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