Use @sap/ams 3.0.0 in CAP sample (#6)

Update CAP sample
* @sap/ams 3.0.0 and @sap/ams-dev 2.1.2
* add tests for technicalUser and principalPropagation

* add .vscode to .gitignore

Author: finkmanAtSap

.gitignore

@@ -0,0 +1 @@
+.vscode

ams-cap-nodejs-bookshop/.cdsrc.json

@@ -30,6 +30,22 @@
                             "local.Zealot",
                             "local.BestsellerReader"
                         ]
+                    },
+                    "technicalUser": {
+                        "roles": [
+                            "system-user"
+                        ],
+                        "ias_apis": [
+                            "ReadCatalog"
+                        ]
+                    },
+                    "principalPropagation": {
+                        "policies": [
+                            "local.JuniorReader"
+                        ],
+                        "ias_apis": [
+                            "ReadCatalog"
+                        ]
                     }
                 }
             },

ams-cap-nodejs-bookshop/ams/apis.js

@@ -0,0 +1,25 @@
+const TECHNICAL_USER_APIS = [
+    "ReadCatalog"
+]
+
+const PRINCIPAL_PROPAGATION_APIS = [
+    "AMS_ValueHelp",
+    "ReadCatalog"
+]
+
+function mapTechnicalUserApi(api) {
+    if (TECHNICAL_USER_APIS.includes(api)) {
+        return `internal.${api}`;
+    }
+}
+
+function mapPrincipalPropagationApi(api) {
+    if (PRINCIPAL_PROPAGATION_APIS.includes(api)) {
+        return `internal.${api}`;
+    }
+}
+
+module.exports = {
+    mapTechnicalUserApi,
+    mapPrincipalPropagationApi
+}

ams-cap-nodejs-bookshop/ams/dcl/internal/apiPolicies.dcl

@@ -0,0 +1,7 @@
+INTERNAL Policy AMS_ValueHelp {
+    USE cap.Reader;
+}
+
+INTERNAL Policy ReadCatalog {
+    USE cap.Reader RESTRICT stock < 30, description IS NOT RESTRICTED, genre IS NOT RESTRICTED;
+}