116 lines
4.3 KiB
JavaScript
116 lines
4.3 KiB
JavaScript
/*Canopy - The next generation of stoner streaming software
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Copyright (C) 2024-2025 Rainbownapkin and the TTN Community
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.*/
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//Node Imports
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const url = require("node:url");
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const validator = require('validator');
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//Local Imports
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const media = require('../../app/channel/media/media.js');
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const regexUtils = require('../regexUtils.js');
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const loggerUtils = require('../loggerUtils.js')
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module.exports.fetchMetadata = async function(link, title){
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//Parse link
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const parsedLink = new url.URL(link);
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//Split link path
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const splitPath = parsedLink.pathname.split('/');
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//Get ItemID from link path
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const itemID = splitPath[2]
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//Splice the empty string, request type, and item ID out from link path
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splitPath.splice(0,3)
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//Join remaining link path back together to get requested file path within the given archive.org upload
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const requestedPath = decodeURIComponent(splitPath.join('/'));
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//Create empty list to hold media objects
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const mediaList = [];
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//Create empty variable to hold return data object
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let data;
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//Create metadata link from itemID
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const metadataLink = `https://archive.org/metadata/${itemID}`;
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//Fetch item metadata from the internet archive
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const response = await fetch(metadataLink,
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{
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method: "GET"
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}
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);
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//If we hit a snag
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if(!response.ok){
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//Scream and shout
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const errorBody = await response.text();
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throw loggerUtils.exceptionSmith(`Internet Archive Error '${response.status}': ${errorBody}`, "queue");
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}
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//Collect our metadata
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const rawMetadata = await response.json();
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//Filter out any in-compatible files
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const compatibleFiles = rawMetadata.files.filter(compatibilityFilter);
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//If we're requesting an empty path
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if(requestedPath == ''){
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//Return item metadata and compatible files
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data = {
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files: compatibleFiles,
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metadata: rawMetadata.metadata
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}
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//Other wise
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}else{
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//Return item metadata and matching compatible files
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data = {
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//Filter files out that don't match requested path and return remaining list
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files: compatibleFiles.filter(pathFilter),
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metadata: rawMetadata.metadata
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}
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}
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//for every compatible and relevant file returned from IA
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for(let file of data.files){
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//Split file path by directories
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const path = file.name.split('/');
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//pull filename from path and escape in-case someone put something nasty in there
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const name = validator.escape(validator.trim(path[path.length - 1]));
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//Construct link from pulled info
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const link = `https://archive.org/download/${data.metadata.identifier}/${file.name}`;
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//if we where handed a null title
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if(title == null || title == ''){
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//Create new media object from file info substituting filename for title
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mediaList.push(new media(name, name, link, link, 'ia', Number(file.length)));
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}else{
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//Create new media object from file info
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mediaList.push(new media(title, name, link, link, 'ia', Number(file.length)));
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}
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}
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//return media object list
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return mediaList;
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function compatibilityFilter(file){
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//return true for all files that match for web-safe formats
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return file.format == "h.264 IA" || file.format == "h.264" || file.format == "Ogg Video" || file.format.match("MPEG4");
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}
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function pathFilter(file){
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//return true for all file names which match the given requested file path
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return file.name.match(`^${regexUtils.escapeRegex(requestedPath)}`);
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}
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} |