From b71a03b067ee4a3de5b403437c57040f6862cfc2 Mon Sep 17 00:00:00 2001
From: "vluk@2fi-solutions.com.hk" <vluk@2fi-solutions.com.hk>
Date: Mon, 16 Jun 2025 15:34:43 +0800
Subject: [PATCH] added for pdf form open and save

---
 .../modules/lioner/web/PdfController.java     | 81 +++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 src/main/java/com/ffii/lioner/modules/lioner/web/PdfController.java

diff --git a/src/main/java/com/ffii/lioner/modules/lioner/web/PdfController.java b/src/main/java/com/ffii/lioner/modules/lioner/web/PdfController.java
new file mode 100644
index 0000000..580f5f3
--- /dev/null
+++ b/src/main/java/com/ffii/lioner/modules/lioner/web/PdfController.java
@@ -0,0 +1,81 @@
+package com.ffii.lioner.modules.lioner.web;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+@RestController
+@RequestMapping("/api/pdf")
+public class PdfController {
+
+    // Endpoint to serve the initial template PDF
+    @GetMapping(value = "/template", produces = MediaType.APPLICATION_PDF_VALUE)
+    public ResponseEntity<byte[]> getPdfTemplate() throws IOException {
+        // Ensure your template PDF is in src/main/resources/static/
+        ClassPathResource pdfFile = new ClassPathResource("static/template_form.pdf");
+        if (!pdfFile.exists()) {
+            return ResponseEntity.status(HttpStatus.NOT_FOUND).body("PDF template not found.".getBytes());
+        }
+        byte[] pdfBytes;
+        try (InputStream is = pdfFile.getInputStream()) {
+            pdfBytes = is.readAllBytes();
+        }
+
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentDispositionFormData("inline", "template_form.pdf");
+        headers.setContentType(MediaType.APPLICATION_PDF);
+        return new ResponseEntity<>(pdfBytes, headers, HttpStatus.OK);
+    }
+
+    // Endpoint to receive the filled PDF from the frontend
+    @PostMapping(value = "/saveFilled", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
+    public ResponseEntity<Map<String, String>> saveFilledPdf(@RequestParam("file") MultipartFile file) {
+        if (file.isEmpty()) {
+            return ResponseEntity.badRequest().body(Map.of("message", "No file uploaded."));
+        }
+        try {
+            // Generate a unique filename and save to an 'uploads' directory
+            String fileName = "filled_form_" + UUID.randomUUID().toString() + ".pdf";
+            Path filePath = Paths.get("uploads", fileName);
+            Files.createDirectories(filePath.getParent()); // Ensure directory exists
+            Files.copy(file.getInputStream(), filePath);
+
+            Map<String, String> response = new HashMap<>();
+            response.put("message", "PDF saved successfully: " + fileName);
+            response.put("filePath", filePath.toString());
+            return ResponseEntity.ok(response);
+
+        } catch (IOException e) {
+            e.printStackTrace();
+            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR)
+                                 .body(Map.of("message", "Failed to save PDF: " + e.getMessage()));
+        }
+    }
+
+    // Optional: Endpoint to receive just the form data (e.g., JSON)
+    @PostMapping("/saveFormData")
+    public ResponseEntity<Map<String, String>> saveFormData(@RequestBody Map<String, Object> formData) {
+        System.out.println("Received form data: " + formData);
+        Map<String, String> response = new HashMap<>();
+        response.put("message", "Form data received and processed successfully.");
+        return ResponseEntity.ok(response);
+    }
+}