add tracks main page. add get my tracks action

media-store/srv/browse-tracks-service.cds

@@ -0,0 +1,24 @@
+using {sap.capire.media.store as my} from '../db/schema';
+
+@cds.query.limit : {
+    default : 12,
+    max     : 100
+}
+@(requires : ['identified-user'])
+service BrowseTracks {
+    @readonly
+    entity Tracks as projection on my.Tracks;
+
+    @(requires : ['authenticated-user'])
+    action getInvoicedTracks() returns array of {
+        ID         : Tracks.ID;
+        trackName  : Tracks.name;
+        genreName  : my.Genres.name;
+        composer   : Tracks.composer;
+        unitPrice  : Tracks.unitPrice;
+        albumTitle : my.Albums.title;
+    };
+
+    @readonly
+    entity Genres as projection on my.Genres;
+}

media-store/srv/browse-tracks-service.js

@@ -0,0 +1,51 @@
+const cds = require("@sap/cds");
+
+const selectInvoicedTracksByEmail = (email) => `
+        select
+            tracks.ID,
+            tracks.name trackName,
+            tracks.composer,
+            tracks.unitPrice,
+            genre.name genreName,
+            album.title albumTitle
+            
+        from sap_capire_media_store_Tracks tracks
+        join sap_capire_media_store_InvoiceItems invoiceItem
+            on invoiceItem.track_ID = tracks.ID
+        join sap_capire_media_store_Invoices invoice
+            on invoice.ID = invoiceItem.invoice_ID
+        join sap_capire_media_store_Customers customer
+            on customer.ID = invoice.customer_ID
+        join sap_capire_media_store_Genres genre
+            on genre.ID = tracks.genre_ID
+        join sap_capire_media_store_Albums album
+            on album.ID = tracks.album_ID
+        where
+            customer.email = '${email}'
+`;
+
+module.exports = async function () {
+  const db = await cds.connect.to("db"); // connect to database service
+
+  // this.before("*", (req) => {
+  //   req.user = new Buyer();
+  // });
+
+  this.before("*", (req) => {
+    console.log(
+      "[USER]:",
+      req.user.id,
+      " [LEVEL]: ",
+      req.user.attr.level,
+      "[ROLE]",
+      req.user.is("user") ? "user" : "other"
+    );
+  });
+
+  this.on("getInvoicedTracks", async (req) => {
+    const user = req.user;
+    user.is("user") || req.reject(403);
+    const query = cds.parse.cql(selectInvoicedTracksByEmail(user.attr.email));
+    return await db.run(query);
+  });
+};

media-store/srv/media-service.cds

@@ -1,8 +1,12 @@
-using { sap.capire.media.store as my } from '../db/schema';
+using {sap.capire.media.store as my} from '../db/schema';
 
+@cds.query.limit : {
+    default : 20,
+    max     : 100
+}
 service MediaService {
-    entity Employees as projection on my.Employees;
-    entity Customers as projection on my.Customers;
+    entity Employees     as projection on my.Employees;
+    entity Customers     as projection on my.Customers;
     entity Albums        as projection on my.Albums;
     entity Artists       as projection on my.Artists;
     entity Genres        as projection on my.Genres;
@@ -11,5 +15,10 @@ service MediaService {
     entity MediaTypes    as projection on my.MediaTypes;
     entity PlaylistTrack as projection on my.PlaylistTrack;
     entity Playlists     as projection on my.Playlists;
+
+    @(restrict : [{
+        grant : '*',
+        where : '$user.level > 1'
+    }])
     entity Tracks        as projection on my.Tracks;
 }