Add basic knex methods to be used for /account/* pages

src/db/account.js

@@ -0,0 +1,65 @@
+const LOGGER = require('@calzoneman/jsli')('AccountDB');
+
+class AccountDB {
+    constructor(db) {
+        this.db = db;
+    }
+
+    getByName(name) {
+        return this.db.runTransaction(async tx => {
+            const rows = await tx.table('users').where({ name }).select();
+
+            if (rows.length === 0) {
+                return null;
+            }
+
+            return this.mapUser(rows[0]);
+        });
+    }
+
+    updateByName(name, changedFields) {
+        return this.db.runTransaction(tx => {
+            if (changedFields.profile) {
+                changedFields.profile = JSON.stringify(changedFields.profile);
+            }
+
+            return tx.table('users')
+                    .update(changedFields)
+                    .where({ name })
+                    .then(rowsUpdated => {
+                if (rowsUpdated === 0) {
+                    throw new Error(`Cannot update: name "${name}" does not exist`);
+                }
+            });
+        });
+    }
+
+    mapUser(user) {
+        // Backwards compatibility
+        // Maybe worth backfilling one day to be done with it?
+        try {
+            let profile;
+
+            if (!user.profile) {
+                profile = { image: '', text: '' };
+            } else {
+                profile = JSON.parse(user.profile);
+            }
+
+            if (!profile.image) profile.image = '';
+            if (!profile.text) profile.text = '';
+
+            user.profile = profile;
+        } catch (error) {
+            // TODO: backfill erroneous records and remove this check
+            LOGGER.warn('Invalid profile "%s": %s', user.profile, error);
+            user.profile = { image: '', text: '' };
+        }
+
+        user.time = new Date(user.time);
+
+        return user;
+    }
+}
+
+export { AccountDB };