lbry.tech/app/helpers/fetch-metadata.js

"use strict";



//  P A C K A G E S

const local = require("app-root-path").require;
const prism = require("prismjs");
const raw = require("choo/html/raw");
const request = require("request-promise-native");
const stringifyObject = require("stringify-object");

//  V A R I A B L E S

const randomString = local("/app/helpers/random-string");
const loadLanguages = require("prismjs/components/");
const logSlackError = local("/app/helpers/slack");
const publishMeme = local("/app/helpers/publish-meme");
const uploadImage = local("/app/helpers/upload-image");

loadLanguages(["json"]);



//  E X P O R T

module.exports = exports = (data, socket) => {
  let dataDetails = "";

  if (data.example === 1 && !data.claim || !data.method) return;
  if (data.example === 2 && !data.data) return;
  if (data.example === 2) dataDetails = data.data; // file upload
  if (data.example === 3 && !data.claim || !data.method) return;

  const allowedMethods = [
    "publish",
    "resolve",
    "wallet_send"
  ];

  const body = {};
  const claimAddress = data.claim;
  const resolveMethod = data.method;
  let apiRequestMethod = "";

  if (allowedMethods.indexOf(resolveMethod) < 0) return socket.send(JSON.stringify({
    "details": "Unallowed resolve method for tutorial",
    "message": "notification",
    "type": "error"
  }));



  body.authorization = process.env.LBRY_DAEMON_ACCESS_TOKEN; // access_token
  body.method = resolveMethod;

  if (resolveMethod === "publish") {
    apiRequestMethod = "PUT";

    // Required for publishing
    body.author = "lbry.tech";
    body.bid = 0.0001; // Hardcoded publish amount
    body.description = dataDetails.description;
    body.language = dataDetails.language;
    body.license = dataDetails.license;
    body.name = dataDetails.name.replace(/\s/g, "-") + randomString(10); // underscores are not allowed?
    body.nsfw = dataDetails.nsfw;
    body.title = dataDetails.title;

    // Gotta let the blockchain know what to save
    body.file_path = dataDetails.file_path; // just base64 string

    return uploadImage(body.file_path).then(uploadResponse => {
      if (!uploadResponse.status || uploadResponse.status !== "ok") {
        socket.send(JSON.stringify({
          "details": "Image upload failed",
          "message": "notification",
          "type": "error"
        }));

        if (process.env.NODE_ENV !== "development") {
          logSlackError(
            "\n" +
            "> *DAEMON ERROR:*\n" +
            "> _Cause: Someone attempted to upload a meme to the web daemon_\n"
          );
        }

        return;
      }

      body.file_path = uploadResponse.filename;

      return publishMeme(body).then(publishResponse => {
        let explorerNotice = "";

        if (publishResponse.error) {
          socket.send(JSON.stringify({
            "details": "Meme publish failed",
            "message": "notification",
            "type": "error"
          }));

          if (process.env.NODE_ENV !== "development") {
            logSlackError(
              "\n" +
              "> *DAEMON ERROR:* ```" + JSON.parse(JSON.stringify(publishResponse.error)) + "```" + "\n" +
              "> _Cause: Someone is going through the Tour after a response has been parsed_\n"
            );
          }

          return;
        }

        if (
          publishResponse.result &&
          publishResponse.result.txid
        ) explorerNotice = `
          <p>If you want proof of the tip you just gave, <a href="https://explorer.lbry.io/tx/${publishResponse.result.txid}" target="_blank" title="Your tip, on our blockchain explorer" rel="noopener noreferrer">check it out</a> on our blockchain explorer!</p>
        `;

        const renderedCode = prism.highlight(stringifyObject(publishResponse, { indent: "  ", singleQuotes: false }), prism.languages.json, "json");

        return socket.send(JSON.stringify({
          "html": raw(`
            <h3>Response</h3>
            ${explorerNotice}
            <pre><code class="language-json">${renderedCode}</code></pre>
            <script>$("#temp-loader").hide();</script>
          `),
          "message": "updated html",
          "selector": `#example${data.example}-result`
        }));
      });
    });
  }

  if (resolveMethod === "resolve") {
    apiRequestMethod = "GET";
    body.uri = claimAddress;
  }

  if (resolveMethod === "wallet_send") {
    apiRequestMethod = "POST";

    body.amount = "0.01"; // Hardcoded tip amount
    body.claim_id = claimAddress;
  }

  return new Promise((resolve, reject) => { // eslint-disable-line
    let explorerNotice = "";

    request({
      body: body,
      json: true,
      method: apiRequestMethod,
      url: `${process.env.NODE_ENV === "development" ? `http://localhost:5200/${resolveMethod}` : `https://daemon.lbry.tech/${resolveMethod}`}`
    }, (error, response, body) => {
      if (error) {
        if (process.env.NODE_ENV !== "development") {
          logSlackError(
            "\n" +
            "> *DAEMON ERROR:* ```" + JSON.parse(JSON.stringify(error)) + "```" + "\n" +
            "> _Cause: Someone is going through the Tour_\n"
          );
        }

        return resolve(error);
      }

      if (body.error && typeof body.error !== "undefined") {
        if (process.env.NODE_ENV !== "development") {
          logSlackError(
            "\n" +
            "> *DAEMON ERROR:* ```" + JSON.parse(JSON.stringify(body.error.message)) + "```" + "\n" +
            "> _Cause: Someone is going through the Tour after a response has been parsed_\n"
          );
        }

        return resolve(body.error);
      }

      if (
        body.result &&
        body.result.txid
      ) explorerNotice = `
        <p>If you want proof of the tip you just gave, <a href="https://explorer.lbry.io/tx/${body.result.txid}" target="_blank" title="Your tip, on our blockchain explorer" rel="noopener noreferrer">check it out</a> on our blockchain explorer!</p>
      `;

      if (socket) {
        const renderedCode = prism.highlight(stringifyObject(body, { indent: "  ", singleQuotes: false }), prism.languages.json, "json");

        return socket.send(JSON.stringify({
          "html": raw(`
            <h3>Response</h3>
            ${explorerNotice}
            <pre><code class="language-json">${renderedCode}</code></pre>
            <script>$("#temp-loader").hide();</script>
          `),
          "message": "updated html",
          "selector": `#example${data.example}-result`
        }));
      }

      return resolve(body.result[Object.keys(body.result)[0]].claim);
    });
  });
};