[+] AquaNetUser JPA entity

src/main/java/icu/samnyan/aqua/net/db/AquaNetUser.kt

@@ -0,0 +1,42 @@
+package icu.samnyan.aqua.net.db
+
+import icu.samnyan.aqua.sega.general.model.Card
+import jakarta.persistence.*
+import org.springframework.data.jpa.repository.JpaRepository
+import org.springframework.stereotype.Repository
+import java.io.Serializable
+
+@Entity(name = "AquaNetUser")
+@Table(name = "aqua_net_user")
+class AquaNetUser(
+    @Id @GeneratedValue(strategy = GenerationType.IDENTITY)
+    var auId: Int = 0,
+
+    // Login credentials
+    @Column(nullable = false, unique = true) var email: String = "",
+    var pwHash: String = "",
+
+    var displayName: String = "",
+
+    // Country code at most 3 characters
+    @Column(length = 3) var country: String = "",
+
+    // Last login time
+    var lastLogin: Long = 0L,
+
+    // Registration time
+    var regTime: Long = 0L,
+
+    // Profile fields
+    var profileLocation: String = "",
+    var profileBio: String = "",
+
+    // One user can have multiple cards
+    @OneToMany(mappedBy = "aquaNetUser", cascade = [CascadeType.ALL])
+    var cards: MutableList<Card> = mutableListOf()
+) : Serializable
+
+@Repository("AquaNetUserRepository")
+interface AquaNetUserRepo : JpaRepository<AquaNetUser, Int> {
+    fun existsByEmail(email: String): Boolean
+}