init

backend/lib/anki.js

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+import { readFile } from 'fs/promises'
+import { open } from 'sqlite'
+import sqlite3 from 'sqlite3'
+import AdmZip from 'adm-zip'
+
+// database structure: https://github.com/ankidroid/Anki-Android/wiki/Database-Structure
+// python example: https://github.com/patarapolw/ankisync2
+// old js example: https://github.com/nornagon/mkanki/blob/master/index.js
+
+// to create a zip file
+// const zip = new AdmZip()
+// zip.addLocalFolder('./folder_to_zip')
+// zip.writeZip('./output.zip')
+
+class Deck {
+
+  /**
+   * 
+   * @param info ID of internal deck, or filename or anki export
+   * @param process whether or not this is an external anki export to process
+   */
+  constructor(info, process) {
+    // pull out variables
+    this.notes = null // this is what is edited; may create multiple cards
+    this.media = null // image and audio files attached to cards/notes
+  }
+
+  /**
+   * Loads an internal deck
+   */
+  async load(id) {
+    // open database
+    // open media files
+  }
+
+  /**
+   * Processes an anki export for internal use. Currently only supports
+   * .apkg files. In the future, may support:
+   *   colpkg
+   *   txt (notes)
+   *   txt (cards)
+   * 
+   * @param filename path of file to process
+   */
+  async process(filename) {
+    return await this.processApkg(filename)
+  }
+
+  /**
+   * Processes a .apkg file into a database
+   * 
+   * @param filename name of file to open and process
+  */
+  async processApkg(filename) {
+    // error handling
+    if (!filename) throw new Error('Must specify a .apkg filename')
+
+    // setup
+    let uuid = crypto.randomUUID()
+    let location = `../data/anki/decks/${uuid}/`
+
+    // make the resource folder if it does not exist already
+    // let resource = ''
+    // if (!fs.existsSync(resource)) fs.mkdirSync(resource, { recursive: true })
+
+    // extract zip
+    // https://stuk.github.io/jszip/documentation/howto/read_zip.html#in-nodejs
+    let zip = new AdmZip(filename)
+    zip.extractAllTo(location, true)
+
+    // extract the notes database
+    let db = await open({
+      filename: location + 'collection.anki2',
+      driver: sqlite3.cached.Database
+    })
+
+    let result = await db.get('SELECT sfld FROM notes WHERE id = :n', 1486785585103)
+
+    console.log(result);
+
+    // extract media files
+    // ? process/rename media files and update in db?
+    // load data into this obj
+
+    // return { notes, media }
+  }
+}
+
+export default Deck

backend/lib/test.js

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+import Deck from './anki.js'
+
+let deck = new Deck()
+await deck.process('test.apkg');

backend/lib/test/media

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+{"66": "rec1486791173.mp3", "12": "paste-5909874999552.jpg", "49": "rec1486790484.mp3", "54": "rec1486789453.mp3", "59": "paste-6051608920308.jpg", "75": "paste-7176890351876.jpg", "50": "paste-5952824672506.jpg", "11": "paste-5342939316470.jpg", "3": "rec1486790515.mp3", "73": "rec1486791444.mp3", "58": "paste-6743098654966.jpg", "26": "rec1486791092.mp3", "60": "paste-5596342386925.jpg", "68": "rec1486787151.mp3", "69": "rec1486790743.mp3", "0": "rec1486791250.mp3", "8": "paste-6219112644848.jpg", "18": "rec1486790648.mp3", "57": "paste-6880537608452.jpg", "61": "rec1486789557.mp3", "33": "paste-6343666696438.jpg", "7": "rec1486791037.mp3", "21": "rec1486786900.mp3", "44": "paste-5476083302645.jpg", "17": "rec1486790321.mp3", "9": "rec1486790979.mp3", "55": "rec1486790707.mp3", "64": "rec1486790888.mp3", "71": "paste-7563437408511.jpg", "53": "paste-6532645257453.jpg", "36": "paste-6322191859961.jpg", "31": "paste-7687991460090.jpg", "28": "rec1486790193.mp3", "47": "rec1486791121.mp3", "39": "rec1486791213.mp3", "14": "paste-7022271529203.jpg", "37": "paste-7288559501563.jpg", "15": "rec1486789738.mp3", "51": "paste-2929167696123.jpg", "25": "paste-7597797146867.jpg", "20": "rec1486790550.mp3", "19": "rec1486790446.mp3", "48": "rec1486788047.mp3", "74": "paste-5849745457397.jpg", "30": "rec1486791007.mp3", "10": "rec1486788946.mp3", "29": "paste-6846177870075.jpg", "4": "rec1486790287.mp3", "56": "rec1486789680.mp3", "62": "paste-5755256176881.jpg", "38": "paste-2143188680961.jpg", "70": "rec1486790804.mp3", "42": "rec1486790858.mp3", "43": "paste-7430293422343.jpg", "23": "paste-6158983102706.jpg", "72": "rec1486789502.mp3", "34": "rec1486790589.mp3", "16": "rec1486791310.mp3", "52": "paste-6266357285108.jpg", "32": "paste-687194767612.jpg", "65": "paste-6708738916592.jpg", "2": "paste-7142530613495.jpg", "40": "paste-816043786497.jpg", "1": "paste-1090921693442.jpg", "67": "rec1486791391.mp3", "5": "rec1486790677.mp3", "6": "rec1486791362.mp3", "46": "rec1486790948.mp3", "22": "paste-7073811136753.jpg", "63": "rec1486790918.mp3", "24": "rec1486790620.mp3", "27": "paste-4939212390648.jpg", "45": "paste-6644314407145.jpg", "41": "paste-5811090751727.jpg", "35": "rec1486789528.mp3", "13": "paste-6442450944247.jpg"}

backend/lib/utils.js

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+export {}