started some work

Author: TheMetalStorm

src/main/java/com/themetalstorm/bibliothekssystem/controller/LoanController.java

@@ -44,6 +44,12 @@ public ResponseEntity<Page<LoanDTO>> getAllLoans(@RequestHeader(name="Authorizat
 
 
     // TODO: Add loan (admin)
+    @PreAuthorize("hasRole('ROLE_ADMIN')")
+    @PostMapping("/admin/loans")
+    public ResponseEntity<LoanDTO> addLoan(@RequestBody LoanDTO loanDTO, @RequestHeader(name="Authorization") String token) {
+        return new ResponseEntity<>(loanService.addLoanAdmin(loanDTO), HttpStatus.CREATED);
+    }
+
     // TODO: Edit loan (admin)
     // TODO: Remove loan (admin)
 

src/main/java/com/themetalstorm/bibliothekssystem/dto/LoanPostDTO.java

@@ -0,0 +1,9 @@
+package com.themetalstorm.bibliothekssystem.dto;
+
+import com.themetalstorm.bibliothekssystem.model.Loan;
+
+public record LoanUserPostDTO(Integer bookId) {
+    public LoanUserPostDTO(Loan loan) {
+        this(loan.getBookId());
+    }
+}

src/main/java/com/themetalstorm/bibliothekssystem/dto/LoanUserPostDTO.java

@@ -136,4 +136,8 @@ public Page<LoanDTO> getAllLoans(String token, Integer page, Integer size, Strin
 
         return all.map(LoanDTO::new);
     }
+
+    public LoanDTO addLoanAdmin(LoanDTO loanDTO) {
+        return null;
+    }
 }