adds flickr-clean script

package.json

@@ -10,6 +10,7 @@
     "cube2csv": "node scripts/cube2csv.js",
     "dev": "canon-dev",
     "docs": "jsdoc2md '+(api|app|db|tools)/**/*.+(js|jsx)' --separators > DOCS.md",
+    "flickr-clean": "node scripts/flickr-clean.js",
     "flickr": "node scripts/flickr-scrape.js",
     "setup": "canon-setup",
     "start": "node index.js",

scripts/flickr-clean.js

@@ -0,0 +1,54 @@
+#! /usr/bin/env node
+
+const Sequelize = require("sequelize"),
+      fs = require("fs"),
+      path = require("path"),
+      shell = require("shelljs");
+
+const dbName = process.env.CANON_DB_NAME;
+const dbUser = process.env.CANON_DB_USER;
+const dbHost = process.env.CANON_DB_HOST || "127.0.0.1";
+const dbPw = process.env.CANON_DB_PW || null;
+
+const db = new Sequelize(dbName, dbUser, dbPw,
+  {
+    host: dbHost,
+    dialect: "postgres",
+    define: {timestamps: true},
+    logging: () => {}
+  }
+);
+
+const dbFolder = path.join(__dirname, "../node_modules/@datawheel/canon-cms/src/db/");
+fs.readdirSync(dbFolder)
+  .filter(file => file && file.indexOf(".") !== 0)
+  .forEach(file => {
+    const model = db.import(path.join(dbFolder, file));
+    db[model.name] = model;
+  });
+
+async function run() {
+
+  const pagesWithImages = await db.search.findAll({where: {imageId: {[Sequelize.Op.ne]: null}}});
+  const usedImages = pagesWithImages.map(d => d.imageId);
+
+  const unusedImagesRows = await db.image.findAll({where: {id: {[Sequelize.Op.notIn]: usedImages}}});
+  const unusedImages = unusedImagesRows.map(d => d.id);
+
+  console.log(`Deleting ${unusedImages.length} unused images...`);
+
+  unusedImages.forEach(id => {
+    const splashPath = path.join(process.cwd(), `static/images/profile/splash/${id}.jpg`);
+    const thumbPath = path.join(process.cwd(), `static/images/profile/thumb/${id}.jpg`);
+    if (shell.test("-e", splashPath)) fs.unlinkSync(splashPath);
+    if (shell.test("-e", thumbPath)) fs.unlinkSync(thumbPath);
+  });
+
+  await db.image_content.destroy({where: {id: unusedImages}});
+  await db.image.destroy({where: {id: unusedImages}});
+
+  shell.exit(0);
+
+}
+
+run();