feat: enhance history module

allow removing items, getting index instead of records, and unify the write methods

src/lib/history.mjs

@@ -15,10 +15,18 @@ export default class History {
     }
   }
 
-  get(id) {
+  persist() {
+    fs.writeFileSync(this.filePath, JSON.stringify(this.db), { encoding: 'utf8' });
+  }
+
+  get(id, index = false) {
+    if (!index) {
       return this.db.find(doc => parseInt(doc.id, 10) === parseInt(id, 10));
     }
 
+    return this.db.findIndex(doc => parseInt(doc.id, 10) === parseInt(id, 10));
+  }
+
   add(doc) {
     // prevent duplicate entries
     if (this.get(doc.id)) return;
@@ -30,6 +38,18 @@ export default class History {
     if (this.db.length > MAX_ITEMS) this.db.splice(0, TRUNCATE_AMOUNT);
 
     // write the updated content to the file
-    fs.writeFileSync(this.filePath, JSON.stringify(this.db), { encoding: 'utf8' });
+    this.persist();
+  }
+
+  remove(doc) {
+    const idx = this.get(doc.id, true);
+
+    // removing document at matched index
+    if (idx !== -1) {
+      this.db.splice(idx, 1);
+
+      // write the updated content to the file
+      this.persist();
+    }
   }
 }