From 2b03529a4c9527bfd235a1b68836598e6e87c11d Mon Sep 17 00:00:00 2001
From: Christian Georgi <christian.georgi@sap.com>
Date: Tue, 14 Mar 2023 15:28:26 +0100
Subject: [PATCH] PDF export PoC

---
 fiori/app/browse/fiori-service.cds | 10 ++++++++
 fiori/package.json                 | 10 ++++++++
 fiori/pdfme.js                     | 38 ++++++++++++++++++++++++++++++
 3 files changed, 58 insertions(+)
 create mode 100644 fiori/pdfme.js

diff --git a/fiori/app/browse/fiori-service.cds b/fiori/app/browse/fiori-service.cds
index 03ff198c..f2730993 100644
--- a/fiori/app/browse/fiori-service.cds
+++ b/fiori/app/browse/fiori-service.cds
@@ -1,5 +1,15 @@
 using CatalogService from '@capire/bookstore';
 
+using from '@sap/cds-pdf-export';
+
+annotate CatalogService with @(
+    Capabilities: { SupportedFormats : [ 'application/pdf' ] },
+    PDF.Features: {
+        DocumentDescriptionReference : '/-pdf/',
+        DocumentDescriptionCollection : 'createDocumentDescription'
+    }
+);
+
 ////////////////////////////////////////////////////////////////////////////
 //
 //	Books Object Page
diff --git a/fiori/package.json b/fiori/package.json
index 187e4059..8e3c530b 100644
--- a/fiori/package.json
+++ b/fiori/package.json
@@ -43,6 +43,16 @@
         "[production]": {
           "model": "db/hana"
         }
+      },
+      "pdf": {
+        "kind": "btp-adobe-forms",
+        "vcap": {
+          "label": "adsrestapi"
+        },
+        "[pdfme]": {
+          "kind": "export-pdf",
+          "impl": "./pdfme.js"
+        }
       }
     },
     "hana": {
diff --git a/fiori/pdfme.js b/fiori/pdfme.js
new file mode 100644
index 00000000..e54024f5
--- /dev/null
+++ b/fiori/pdfme.js
@@ -0,0 +1,38 @@
+const { generate, BLANK_PDF } = require("@pdfme/generator");
+
+/**
+ * Generate PDF with @pdfme/generator library
+ */
+module.exports = async (data, headers) => {
+
+  let inputs = data
+
+  let x = 0, y = 0;
+  const width = 30;
+  const height = 5;
+
+  const tableSchema = {}
+  for (const entry of headers) {
+    x += width;
+    tableSchema[entry.Name] = {
+      type: 'text',
+      position: { x, y: 10 },
+      width,
+      height
+    }
+  }
+
+  for (const row of data) {
+    for (const [key, value] of Object.entries(row)) {
+      if (typeof value !== 'string')  row[key] = ''+value // stringify
+    }
+  }
+
+  const template = {
+    basePdf: BLANK_PDF,
+    schemas: [tableSchema]
+  };
+  const pdf = await generate({ template, inputs });
+
+  return pdf;
+};