refactor(backend): split log files into separate file

lib/log/fs.ts

@@ -0,0 +1,52 @@
+import { join } from "node:path";
+import { LOG_DIR } from "@lib/log/constants.ts";
+import { Log } from "@lib/log/types.ts";
+
+function getLogFileName() {
+  const d = new Date();
+  const year = d.getFullYear();
+  const month = (d.getMonth() + 1).toString().padStart(2, "0"); // Ensure two digits
+  const day = d.getDate().toString().padStart(2, "0"); // Ensure two digits
+  return `${year}-${month}-${day}.log`;
+}
+
+export function writeLogEntry(entry: Log) {
+  const logEntry = JSON.stringify(entry);
+  const logFilePath = join(LOG_DIR, getLogFileName());
+
+  // Append the log entry to the file (creating it if it doesn't exist)
+  Deno.writeTextFile(
+    logFilePath,
+    new Date().toISOString() + " | " + logEntry + "\n",
+    { append: true },
+  );
+}
+
+export async function getLogs() {
+  const logFilePath = join(LOG_DIR, getLogFileName());
+
+  try {
+    // Read the log file content
+    const logFileContent = await Deno.readTextFile(logFilePath);
+
+    // Split by lines and parse logs
+    const logs: Log[] = logFileContent
+      .split("\n")
+      .filter((line) => line.trim() !== "")
+      .map((line) => {
+        const [date, ...rest] = line.split(" | ");
+        const parsed = JSON.parse(rest.join(" | ")) as Log;
+        return {
+          ...parsed,
+          date: new Date(date),
+        } as Log;
+      });
+    console.log(logs);
+
+    // Return the logs sorted by date
+    return logs.sort((a, b) => a.date.getTime() - b.date.getTime());
+  } catch (_error) {
+    // If file does not exist, return an empty array
+    return [];
+  }
+}