Improved search

server.js

@@ -43,11 +43,38 @@ router.get('/tracks', async (req, res) => {
   })
 })
 
+let srchcategories = ['title', 'artist', 'album']
 router.get('/tracks/search', async (req, res) => {
   let query = req.query.string
+  let qr = ''
+  let exact = false
+
+  if (query.indexOf(':') !== -1) {
+    let ctr = query.split(':')
+
+    if (srchcategories.indexOf(ctr[0]) !== -1) {
+      qr = `ifnull(${ctr[0]}, '')`
+      query = query.substring(ctr[0].length + 1)
+    }
+  }
+
+  if (qr === '') {
+    for (let c in srchcategories) {
+      let cat = srchcategories[c]
+      if (parseInt(c) !== 0) qr += ' || '
+      qr += `ifnull(${cat}, '')`
+    }
+  }
+
+  if (query.indexOf('=') !== -1 && query.indexOf('\\=') === -1) {
+    query = query.replace('=', '')
+    exact = true
+  }
+
+  if (!exact) query = `%${query}%`
 
   let db = await dbPromise
-  let tracks = await db.all('SELECT * FROM Track WHERE title || ifnull(artist,\'\') || ifnull(album,\'\') LIKE ? LIMIT 100', `%${query}%`)
+  let tracks = await db.all(`SELECT * FROM Track WHERE ${qr} LIKE ? LIMIT 100`, query)
 
   for (let i in tracks) {
     delete tracks[i].file