feat: implement Attachment entity and repository

src/main/java/org/example/vet1177/entities/Attachment.java

@@ -0,0 +1,98 @@
+package org.example.vet1177.entities;
+
+import jakarta.persistence.*;
+import org.hibernate.annotations.OnDelete;
+import org.hibernate.annotations.OnDeleteAction;
+
+import java.time.Instant;
+import java.util.UUID;
+
+@Entity
+@Table(name = "attachment")
+public class Attachment {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.UUID)
+    private UUID id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "record_id", nullable = false)
+    @OnDelete(action = OnDeleteAction.CASCADE)
+    private MedicalRecord medicalRecord;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "uploaded_by", nullable = false)
+    @OnDelete(action = OnDeleteAction.SET_NULL)
+    private User uploadedBy;
+
+    @Column(name = "file_name", nullable = false, length = 500)
+    private String fileName;
+
+    // Den unika nyckeln/sökvägen i S3-bucket
+    @Column(name = "s3_key", nullable = false, unique = true, length = 1000)
+    private String s3Key;
+
+    @Column(name = "s3_bucket", nullable = false, length = 255)
+    private String s3Bucket;
+
+    @Column(name = "file_type", length = 100)
+    private String fileType;
+
+    @Column(name = "file_size_bytes")
+    private Long fileSizeBytes;
+
+    @Column(name = "uploaded_at", nullable = false, updatable = false)
+    private Instant uploadedAt;
+
+    public Attachment() {
+    }
+
+    @PrePersist
+    protected void onCreate() {
+        this.uploadedAt = Instant.now();
+    }
+
+    // Getters och Setters
+    public UUID getId() { return id; }
+
+    public MedicalRecord getMedicalRecord() { return medicalRecord; }
+
+    public void setMedicalRecord(MedicalRecord medicalRecord) {
+        this.medicalRecord = medicalRecord; }
+
+    public User getUploadedBy() {
+        return uploadedBy; }
+
+    public void setUploadedBy(User uploadedBy) {
+        this.uploadedBy = uploadedBy; }
+
+    public String getFileName() {
+        return fileName; }
+
+    public void setFileName(String fileName) {
+        this.fileName = fileName; }
+
+    public String getS3Key() {
+        return s3Key; }
+
+    public void setS3Key(String s3Key) {
+        this.s3Key = s3Key; }
+
+    public String getS3Bucket() {
+        return s3Bucket; }
+
+    public void setS3Bucket(String s3Bucket) {
+        this.s3Bucket = s3Bucket; }
+
+    public String getFileType() { return fileType; }
+    public void setFileType(String fileType) { this.fileType = fileType; }
+
+    public Long getFileSizeBytes() {
+        return fileSizeBytes; }
+
+    public void setFileSizeBytes(Long fileSizeBytes) {
+        this.fileSizeBytes = fileSizeBytes; }
+
+    public Instant getUploadedAt() {
+        return uploadedAt; }
+}

src/main/java/org/example/vet1177/entities/MedicalRecord.java

@@ -2,6 +2,8 @@
 
 import jakarta.persistence.*;
 import java.time.Instant;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.UUID;
 
 @Entity
@@ -47,6 +49,9 @@ public class MedicalRecord {
     @JoinColumn(name = "updated_by")
     private User updatedBy;
 
+    @OneToMany(mappedBy = "medicalRecord", cascade = CascadeType.ALL, orphanRemoval = true)
+    private java.util.List<Attachment> attachments = new ArrayList<>();
+
     // Timestamps
     @Column(name = "created_at", updatable = false)
     private Instant createdAt;
@@ -109,6 +114,38 @@ public MedicalRecord() {}
     public User getUpdatedBy() { return updatedBy; }
     public void setUpdatedBy(User updatedBy) { this.updatedBy = updatedBy; }
 
+
+    public List<Attachment> getAttachments() {
+        return java.util.Collections.unmodifiableList(attachments);
+    }
+
+    public void setAttachments(List<Attachment> newAttachments) {
+        this.attachments.clear();
+        if (newAttachments != null) {
+            for (Attachment attachment : newAttachments) {
+                this.addAttachment(attachment);
+            }
+        }
+    }
+
+
+    public void addAttachment(Attachment attachment) {
+        if (attachment != null) {
+            this.attachments.add(attachment);
+            // Sätt baksidan av relationen om den inte redan är satt
+            if (attachment.getMedicalRecord() != this) {
+                attachment.setMedicalRecord(this);
+            }
+        }
+    }
+
+    public void removeAttachment(Attachment attachment) {
+        if (attachment != null) {
+            this.attachments.remove(attachment);
+            attachment.setMedicalRecord(null);
+        }
+    }
+
     public Instant getCreatedAt() { return createdAt; }
     public Instant getUpdatedAt() { return updatedAt; }
     public Instant getClosedAt() { return closedAt; }

src/main/java/org/example/vet1177/entities/User.java

@@ -2,6 +2,8 @@
 
 import jakarta.persistence.*;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.UUID;
 
 @Entity
@@ -24,6 +26,11 @@ public class User {
     @Enumerated(EnumType.STRING)
     private Role role; //role använder enum OWNER, VET, ADMIN
 
+    // Koppling till bilagor som användaren laddat upp
+    // Vi använder inte CascadeType.REMOVE för att skydda medicinsk data om en användare raderas
+    @OneToMany(mappedBy = "uploadedBy", cascade = {CascadeType.PERSIST, CascadeType.MERGE})
+    private List<Attachment> uploadedAttachments = new ArrayList<>();
+
     public User() {
     } //tom konsturktor för JPA
 
@@ -69,4 +76,33 @@ public Role getRole() {
     public void setRole(Role role) {
         this.role = role;
     }
+
+
+    public List<Attachment> getUploadedAttachments() {
+        return java.util.Collections.unmodifiableList(uploadedAttachments);
+    }
+
+    public void setUploadedAttachments(List<Attachment> attachments) {
+        this.uploadedAttachments.clear();
+        if (attachments != null) {
+            attachments.forEach(this::addAttachment);
+        }
+    }
+
+    public void addAttachment(Attachment attachment) {
+        if (attachment != null) {
+            this.uploadedAttachments.add(attachment);
+            // Säkerställ att bilagan pekar på denna användare
+            if (attachment.getUploadedBy() != this) {
+                attachment.setUploadedBy(this);
+            }
+        }
+    }
+
+    public void removeAttachment(Attachment attachment) {
+        if (attachment != null) {
+            this.uploadedAttachments.remove(attachment);
+            attachment.setUploadedBy(null);
+        }
+    }
 }

src/main/java/org/example/vet1177/repository/AttachmentRepository.java

@@ -0,0 +1,19 @@
+package org.example.vet1177.repository;
+
+import org.example.vet1177.entities.Attachment;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+@Repository
+public interface AttachmentRepository extends JpaRepository<Attachment, UUID> {
+
+    List<Attachment> findByMedicalRecordId(UUID recordId);
+
+    List<Attachment> findByUploadedById(UUID userId);
+
+    Optional<Attachment> findByS3Key(String s3Key);
+}

src/main/resources/schema.sql

@@ -69,8 +69,8 @@ CREATE TABLE IF NOT EXISTS comment (
 
 CREATE TABLE IF NOT EXISTS attachment (
                                           id              UUID        PRIMARY KEY DEFAULT gen_random_uuid(),
-                                          record_id       UUID        NOT NULL REFERENCES medical_record(id),
-                                          uploaded_by     UUID        NOT NULL REFERENCES users(id),
+                                          record_id       UUID        NOT NULL REFERENCES medical_record(id) ON DELETE CASCADE,
+                                          uploaded_by     UUID        REFERENCES users(id) ON DELETE SET NULL,
                                           file_name       VARCHAR(500) NOT NULL,
                                           s3_key          VARCHAR(1000) NOT NULL UNIQUE,
                                           s3_bucket       VARCHAR(255) NOT NULL,