import/export data

controllers/load.ts

@@ -0,0 +1,111 @@
+import type { RequestHandler } from "express";
+
+// load db models
+import Links from "../models/links.ts";
+import Playlists from "../models/playlists.ts";
+
+import { dateForFilename } from "../utils/getFormattedDate.ts";
+import logger from "../utils/logger.ts";
+
+const exportData: RequestHandler = async (req, res) => {
+  try {
+    if (!req.session.user)
+      throw new ReferenceError("session does not have user object");
+    const uID = req.session.user.id;
+
+    const currentPlaylists = await Playlists.findAll({
+      attributes: ["playlistID", "playlistName"],
+      raw: true,
+      where: {
+        userID: uID,
+      },
+    });
+    const currentLinks = await Links.findAll({
+      attributes: ["from", "to"],
+      raw: true,
+      where: {
+        userID: uID,
+      },
+    });
+
+    res.attachment(
+      "Spotify Manager - Core Backup - " + dateForFilename() + ".json"
+    );
+    res.send(JSON.stringify({ currentPlaylists, currentLinks }));
+    logger.debug("exported data");
+    return null;
+  } catch (error) {
+    res.status(500).send({ message: "Internal Server Error" });
+    logger.error("exportData", { error });
+    return null;
+  }
+};
+
+const importData: RequestHandler = async (req, res) => {
+  try {
+    if (!req.session.user)
+      throw new ReferenceError("session does not have user object");
+    const uID = req.session.user.id;
+
+    if (!req.file) {
+      res.status(400).send({ message: "No file provided!" });
+      logger.debug("no file provided");
+      return null;
+    }
+    let exportedLinks: Pick<Links, "from" | "to">[];
+    let exportedPls: Pick<Playlists, "playlistID" | "playlistName">[];
+    try {
+      let exportedData = JSON.parse(req.file.buffer.toString());
+      exportedLinks = structuredClone(exportedData["currentLinks"]);
+      exportedPls = structuredClone(exportedData["currentPlaylists"]);
+    } catch (error: any) {
+      const message = "Could not parse data file";
+      res.status(400).send({ message });
+      logger.info(message, { error });
+      return null;
+    }
+
+    const delPlNum = await Playlists.destroy({ where: { userID: uID } });
+    const delLinkNum = await Links.destroy({ where: { userID: uID } });
+    logger.debug("cleaned before importing", { delPlNum, delLinkNum });
+
+    const addedPls = await Playlists.bulkCreate(
+      exportedPls.map((pl) => {
+        return { ...pl, userID: uID };
+      }),
+      { validate: true }
+    );
+    if (addedPls.length !== exportedPls.length) {
+      logger.error("Could not import all playlists");
+    }
+    const addedLinks = await Links.bulkCreate(
+      exportedLinks.map((link) => {
+        return { ...link, userID: uID };
+      }),
+      { validate: true }
+    );
+    if (addedLinks.length !== exportedLinks.length) {
+      logger.error("Could not import all links");
+    }
+    const message =
+      "Imported " +
+      addedLinks.length +
+      " links, " +
+      addedPls.length +
+      " playlists.";
+    res
+      .status(200)
+      .send({ message, links: addedLinks.length, playlists: addedPls.length });
+    logger.debug(message, {
+      links: addedLinks.length,
+      playlists: addedPls.length,
+    });
+    return null;
+  } catch (error) {
+    res.status(500).send({ message: "Internal Server Error" });
+    logger.error("exportData", { error });
+    return null;
+  }
+};
+
+export { exportData, importData };

index.ts

@@ -20,6 +20,7 @@ import { getCurrentUsersProfile } from "./api/spotify.ts";
 import authRoutes from "./routes/auth.ts";
 import playlistRoutes from "./routes/playlists.ts";
 import operationRoutes from "./routes/operations.ts";
+import loadRoutes from "./routes/load.ts";
 
 import logger from "./utils/logger.ts";
 
@@ -109,6 +110,7 @@ app.use("/auth-health", isAuthenticated, async (req, res) => {
 app.use("/api/auth/", authRoutes);
 app.use("/api/playlists", isAuthenticated, playlistRoutes);
 app.use("/api/operations", isAuthenticated, operationRoutes);
+app.use("/api/load", isAuthenticated, loadRoutes);
 
 // Fallbacks
 app.use((req, res) => {

package-lock.json

@@ -19,6 +19,7 @@
         "express-session": "^1.18.1",
         "express-validator": "^7.2.0",
         "helmet": "^8.0.0",
+        "multer": "^1.4.5-lts.1",
         "pg": "^8.13.1",
         "redis": "^4.7.0",
         "reflect-metadata": "^0.2.2",
@@ -32,6 +33,7 @@
         "@types/cors": "^2.8.17",
         "@types/express": "^4.17.21",
         "@types/express-session": "^1.18.1",
+        "@types/multer": "^1.4.12",
         "@types/node": "^22.13.10",
         "@types/sequelize": "^4.28.20",
         "@types/validator": "^13.12.2",
@@ -691,6 +693,16 @@
       "resolved": "https://registry.npmjs.org/@types/ms/-/ms-2.1.0.tgz",
       "integrity": "sha512-GsCCIZDE/p3i96vtEqx+7dBUGXrc7zeSK3wwPHIaRThS+9OhWIXRqzs4d6k1SVU8g91DrNRWxWUGhp5KXQb2VA=="
     },
+    "node_modules/@types/multer": {
+      "version": "1.4.12",
+      "resolved": "https://registry.npmjs.org/@types/multer/-/multer-1.4.12.tgz",
+      "integrity": "sha512-pQ2hoqvXiJt2FP9WQVLPRO+AmiIm/ZYkavPlIQnx282u4ZrVdztx0pkh3jjpQt0Kz+YI0YhSG264y08UJKoUQg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/express": "*"
+      }
+    },
     "node_modules/@types/node": {
       "version": "22.13.10",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-22.13.10.tgz",
@@ -815,6 +827,12 @@
         "node": ">= 8"
       }
     },
+    "node_modules/append-field": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/append-field/-/append-field-1.0.0.tgz",
+      "integrity": "sha512-klpgFSWLW1ZEs8svjfb7g4qWY0YS5imI82dTg+QahUvJ8YqAY0P10Uk8tTyh9ZGuYEZEMaeJYCF5BFuX552hsw==",
+      "license": "MIT"
+    },
     "node_modules/array-flatten": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
@@ -923,6 +941,23 @@
         "node": ">=8"
       }
     },
+    "node_modules/buffer-from": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.2.tgz",
+      "integrity": "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==",
+      "license": "MIT"
+    },
+    "node_modules/busboy": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/busboy/-/busboy-1.6.0.tgz",
+      "integrity": "sha512-8SFQbg/0hQ9xy3UNTB0YEnsNBbWfhf7RtnzpL7TkBiTBRfrQ9Fxcnz7VJsleJpyp6rVLvXiuORqjlHi5q+PYuA==",
+      "dependencies": {
+        "streamsearch": "^1.1.0"
+      },
+      "engines": {
+        "node": ">=10.16.0"
+      }
+    },
     "node_modules/bytes": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz",
@@ -1173,6 +1208,51 @@
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
       "integrity": "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg=="
     },
+    "node_modules/concat-stream": {
+      "version": "1.6.2",
+      "resolved": "https://registry.npmjs.org/concat-stream/-/concat-stream-1.6.2.tgz",
+      "integrity": "sha512-27HBghJxjiZtIk3Ycvn/4kbJk/1uZuJFfuPEns6LaEvpvG1f0hTea8lilrouyo9mVc2GWdcEZ8OLoGmSADlrCw==",
+      "engines": [
+        "node >= 0.8"
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "buffer-from": "^1.0.0",
+        "inherits": "^2.0.3",
+        "readable-stream": "^2.2.2",
+        "typedarray": "^0.0.6"
+      }
+    },
+    "node_modules/concat-stream/node_modules/readable-stream": {
+      "version": "2.3.8",
+      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.8.tgz",
+      "integrity": "sha512-8p0AUk4XODgIewSi0l8Epjs+EVnWiK7NoDIEGU0HhE7+ZyY8D1IMY7odu5lRrFXGg71L15KG8QrPmum45RTtdA==",
+      "license": "MIT",
+      "dependencies": {
+        "core-util-is": "~1.0.0",
+        "inherits": "~2.0.3",
+        "isarray": "~1.0.0",
+        "process-nextick-args": "~2.0.0",
+        "safe-buffer": "~5.1.1",
+        "string_decoder": "~1.1.1",
+        "util-deprecate": "~1.0.1"
+      }
+    },
+    "node_modules/concat-stream/node_modules/safe-buffer": {
+      "version": "5.1.2",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+      "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
+      "license": "MIT"
+    },
+    "node_modules/concat-stream/node_modules/string_decoder": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "license": "MIT",
+      "dependencies": {
+        "safe-buffer": "~5.1.0"
+      }
+    },
     "node_modules/config-chain": {
       "version": "1.1.13",
       "resolved": "https://registry.npmjs.org/config-chain/-/config-chain-1.1.13.tgz",
@@ -1238,6 +1318,12 @@
       "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
       "integrity": "sha512-QADzlaHc8icV8I7vbaJXJwod9HWYp8uCqf1xa4OfNu1T7JVxQIrUgOWtHdNDtPiywmFbiS12VjotIXLrKM3orQ=="
     },
+    "node_modules/core-util-is": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.3.tgz",
+      "integrity": "sha512-ZQBvi1DcpJ4GDqanjucZ2Hj3wEO5pZDS89BWbkcrvdxksJorwUDDZamX9ldFkp9aw2lmBDLgkObEA4DWNJ9FYQ==",
+      "license": "MIT"
+    },
     "node_modules/cors": {
       "version": "2.8.5",
       "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
@@ -2205,6 +2291,12 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/isarray": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
+      "integrity": "sha512-VLghIWNM6ELQzo7zwmcg0NmTVyWKYjvIeM83yjp0wRDTmUnrM678fQbcKBo6n2CJEF0szoG//ytg+TKla89ALQ==",
+      "license": "MIT"
+    },
     "node_modules/isexe": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/isexe/-/isexe-2.0.0.tgz",
@@ -2406,6 +2498,15 @@
         "node": "*"
       }
     },
+    "node_modules/minimist": {
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.8.tgz",
+      "integrity": "sha512-2yyAR8qBkN3YuheJanUpWC5U3bb5osDywNB8RzDVlDwDHbocAJveqqj1u8+SVD7jkWT4yvsHCpWqqWqAxb0zCA==",
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/minipass": {
       "version": "7.1.2",
       "resolved": "https://registry.npmjs.org/minipass/-/minipass-7.1.2.tgz",
@@ -2415,6 +2516,18 @@
         "node": ">=16 || 14 >=14.17"
       }
     },
+    "node_modules/mkdirp": {
+      "version": "0.5.6",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.6.tgz",
+      "integrity": "sha512-FP+p8RB8OWpF3YZBCrP5gtADmtXApB5AMLn+vdyA+PyxCjrCs00mjyUozssO33cwDeT3wNGdLxJ5M//YqtHAJw==",
+      "license": "MIT",
+      "dependencies": {
+        "minimist": "^1.2.6"
+      },
+      "bin": {
+        "mkdirp": "bin/cmd.js"
+      }
+    },
     "node_modules/moment": {
       "version": "2.30.1",
       "resolved": "https://registry.npmjs.org/moment/-/moment-2.30.1.tgz",
@@ -2439,6 +2552,24 @@
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
       "integrity": "sha512-Tpp60P6IUJDTuOq/5Z8cdskzJujfwqfOTkrwIwj7IRISpnkJnT6SyJ4PCPnGMoFjC9ddhal5KVIYtAt97ix05A=="
     },
+    "node_modules/multer": {
+      "version": "1.4.5-lts.1",
+      "resolved": "https://registry.npmjs.org/multer/-/multer-1.4.5-lts.1.tgz",
+      "integrity": "sha512-ywPWvcDMeH+z9gQq5qYHCCy+ethsk4goepZ45GLD63fOu0YcNecQxi64nDs3qluZB+murG3/D4dJ7+dGctcCQQ==",
+      "license": "MIT",
+      "dependencies": {
+        "append-field": "^1.0.0",
+        "busboy": "^1.0.0",
+        "concat-stream": "^1.5.2",
+        "mkdirp": "^0.5.4",
+        "object-assign": "^4.1.1",
+        "type-is": "^1.6.4",
+        "xtend": "^4.0.0"
+      },
+      "engines": {
+        "node": ">= 6.0.0"
+      }
+    },
     "node_modules/negotiator": {
       "version": "0.6.3",
       "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.3.tgz",
@@ -2770,6 +2901,12 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/process-nextick-args": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
+      "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==",
+      "license": "MIT"
+    },
     "node_modules/proto-list": {
       "version": "1.2.4",
       "resolved": "https://registry.npmjs.org/proto-list/-/proto-list-1.2.4.tgz",
@@ -3331,6 +3468,14 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/streamsearch": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/streamsearch/-/streamsearch-1.1.0.tgz",
+      "integrity": "sha512-Mcc5wHehp9aXz1ax6bZUyY5afg9u2rv5cqQI3mRrYkGC8rW2hM02jWuwjtL++LS5qinSyhj2QfLyNsuc+VsExg==",
+      "engines": {
+        "node": ">=10.0.0"
+      }
+    },
     "node_modules/string_decoder": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.3.0.tgz",
@@ -3557,6 +3702,12 @@
         "node": ">= 0.6"
       }
     },
+    "node_modules/typedarray": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
+      "integrity": "sha512-/aCDEGatGvZ2BIk+HmLf4ifCJFwvKFNb9/JeZPMulfgFracn9QFcAf5GO8B/mweUjSoblS5In0cWhqpfs/5PQA==",
+      "license": "MIT"
+    },
     "node_modules/typescript": {
       "version": "5.8.2",
       "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.8.2.tgz",

package.json

@@ -31,6 +31,7 @@
     "express-session": "^1.18.1",
     "express-validator": "^7.2.0",
     "helmet": "^8.0.0",
+    "multer": "^1.4.5-lts.1",
     "pg": "^8.13.1",
     "redis": "^4.7.0",
     "reflect-metadata": "^0.2.2",
@@ -44,6 +45,7 @@
     "@types/cors": "^2.8.17",
     "@types/express": "^4.17.21",
     "@types/express-session": "^1.18.1",
+    "@types/multer": "^1.4.12",
     "@types/node": "^22.13.10",
     "@types/sequelize": "^4.28.20",
     "@types/validator": "^13.12.2",

routes/load.ts

@@ -0,0 +1,13 @@
+import { Router } from "express";
+const loadRouter: Router = Router();
+
+import multer from "multer";
+const upload = multer({ limits: { fileSize: 1024 * 1024 /** 1MB */ } });
+import { exportData, importData } from "../controllers/load.ts";
+
+// import { validate } from "../validators/index.ts";
+
+loadRouter.get("/", exportData);
+loadRouter.put("/", upload.single("dataFile"), importData);
+
+export default loadRouter;

utils/getFormattedDate.ts

@@ -0,0 +1,24 @@
+import { zeroPaddedString } from "./getFormattedNumber.ts";
+
+/**
+ * Returns a timestamp string to use for timestamped files
+ * @returns String of current datetime in YYYYMMDD-HHMMSS format
+ */
+const dateForFilename = (): string => {
+  const dt = new Date();
+  return `${dt.getFullYear()}${zeroPaddedString(
+    dt.getMonth() + 1,
+    2,
+    "before"
+  )}${zeroPaddedString(dt.getDate(), 2, "before")}-${zeroPaddedString(
+    dt.getHours(),
+    2,
+    "before"
+  )}${zeroPaddedString(dt.getMinutes(), 2, "before")}${zeroPaddedString(
+    dt.getSeconds(),
+    2,
+    "before"
+  )}`;
+};
+
+export { dateForFilename };

utils/getFormattedNumber.ts

@@ -0,0 +1,16 @@
+const zeroPaddedString = (
+  num: number,
+  requiredDigits: number,
+  position: "before" | "after"
+): string => {
+  if (num < 0) throw new RangeError("negative number");
+  if (requiredDigits < 0) throw new RangeError("invalid number of zeroes");
+  if (position !== "before" && position !== "after")
+    throw new TypeError("invalid position (before or after only)");
+
+  const requiredZeroes = requiredDigits - (num + "").replace(".", "").length;
+  const zeroes = "0".repeat(requiredZeroes);
+  return position === "before" ? "" + zeroes + num : "" + num + zeroes;
+};
+
+export { zeroPaddedString };