Import: Added band and character import

Use 'npm run import' to import from assets/import/{bands,characters}.
Existing entries are not overwritten!

import.js

@@ -0,0 +1,86 @@
+require("dotenv").config();
+const { Console } = require("console");
+const fs = require("fs");
+const dbUtil = require("./util/db")
+const { Band, Character } = require("./models");
+
+const logger = new Console({
+    stdout: process.stdout,
+    stderr: process.stderr
+});
+
+//TODO: Fix ./data folders permission so wen can move out dataset in there
+
+async function importBands() {
+    const bandFiles = fs.readdirSync("./assets/import/bands").filter(file => file.endsWith(".json"));
+    //read json file and parse it into a javascript object
+    for (const file of bandFiles) {
+        let band = fs.readFileSync(`./assets/import/bands/${file}`);
+        band = JSON.parse(band);
+        logger.log(`Importing band: ${band.name}`);
+        //check if band exists in database
+        let existingBand = await db.Band.findOne({
+            where: {
+                name: band.name
+            }
+        })
+
+        if (existingBand) {
+            logger.log(`Band ${band.name} already exists in database`);
+            continue;
+        } else {
+            //create band in database
+            await db.Band.create({
+                id: band.id,
+                name: band.name,
+                description: band.description,
+                imageURL: band.imageURL,
+                enabled: band.enabled
+            });
+            logger.log(`Created band ${band.name} in database`);
+        }
+    }
+}
+
+
+async function importCharacters() {
+    const characterFiles = fs.readdirSync("./assets/import/characters").filter(file => file.endsWith(".json"));
+    //read json file and parse it into a javascript object
+    for (const file of characterFiles) {
+        let characters = fs.readFileSync(`./assets/import/characters/${file}`);
+        characters = JSON.parse(characters);
+        for (character of characters) {
+            logger.log(`Importing character: ${character.name}`);
+            //check if character exists in database
+            let existingCharacter = await db.Character.findOne({
+                where: {
+                    id: character.id
+                }
+            })
+            if (existingCharacter) {
+                logger.log(`Character ${character.name} already exists in database`);
+                continue;
+            } else {
+                //create band in database
+                await db.Character.create({
+                    id: character.id,
+                    bandId: character.bandId,
+                    name: character.name,
+                    description: character.description,
+                    imageIdentifier: character.imageIdentifier,
+                    enabled: character.enabled
+                });
+                logger.log(`Created character ${character.name} in database`);
+            }
+        }
+    }
+}
+
+logger.log("Importing...");
+dbUtil.syncDb();
+db = dbUtil.getDb();
+importBands();
+importCharacters();
+logger.log("Import complete");
+
+