initial commit/backup

serverJS/history.cjs

@@ -0,0 +1,60 @@
+const { createClient } = require('redis');
+const { exec } = require('child_process');
+const fs = require('fs');
+const loggermod = require('../utils/logger.cjs');
+const { logger } = loggermod;
+
+
+/** @type {import('redis').RedisClientType} */
+let client;
+
+
+async function addHistory(uid, query, code, title) {
+    // logger.info(uid, query);
+    return await client.lPush(`searchHistory:${uid}`, JSON.stringify({ title, query, timestamp: new Date(), code }));
+}
+
+
+async function getHistory(uid) {
+    return await client.lRange(`searchHistory:${uid}`, 0, -1);
+}
+
+
+/**
+ * @param {Electron.WebContents} webContents 
+ */
+async function displayHistory(uid, webContents) {
+    const history = JSON.stringify(await getHistory(uid));
+    webContents.executeJavaScript(`showHistory(${history})`);
+}
+
+
+const quitRedis = () => client.quit().then(() => logger.info('redis quit')).catch(_ => null);
+
+async function setupRedis() {
+    await new Promise((resolve, reject) => {
+        if (!fs.existsSync('../cache/redis.conf')) {
+            fs.writeFileSync('../cache/redis.conf', `dir ./\ndbfilename dump.rdb`);
+        }
+
+        const p = exec('redis-server ../cache/redis.conf', (err, stdout, stderr) => {
+            if (err) return reject(err);
+        });
+        p.on('message', logger.info);
+        p.on('error', logger.error);
+        p.on('spawn', resolve);
+    });
+
+    client = await createClient()
+        .on('error', err => {
+            logger.info('Redis Client Error', err);
+        })
+        .connect();
+
+    // clear history on browser boot
+    client.flushDb();
+
+    logger.info('Redis Client Connected!');
+}
+
+module.exports = { setupRedis, redisclient: client, getHistory, addHistory, displayHistory, quitRedis };