completed initial scaffolding for services

src/main/java/zw/qantra/tm/domain/models/Charge.java

@@ -0,0 +1,67 @@
+package zw.qantra.tm.domain.models;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import jakarta.persistence.*;
+import lombok.*;
+import zw.qantra.tm.domain.enums.ChargeLabelEnum;
+import zw.qantra.tm.domain.enums.CurrencyType;
+import zw.qantra.tm.domain.enums.TargetEvent;
+
+import java.math.BigDecimal;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.UUID;
+
+@Entity
+@Getter
+@Setter
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor
+public class Charge {
+    @Id
+    @GeneratedValue(strategy = GenerationType.UUID)
+    private UUID id;
+
+    private String description;
+
+    // % rate to charge
+    private BigDecimal percentageRate;
+    private BigDecimal flat;
+    private boolean composite; // composite is % plus flat
+    private boolean global;
+
+    private BigDecimal min;
+    private BigDecimal max;
+    private BigDecimal minimumAmount;
+    private BigDecimal maximumAmount;
+
+    @Enumerated(EnumType.STRING)
+    private ChargeLabelEnum chargeLabel;
+    @Enumerated(EnumType.STRING)
+    private CurrencyType currency;
+    private String account;
+    private String target;
+    private String targetValue;
+    @Enumerated(EnumType.STRING)
+    private TargetEvent targetEvent; // include / exclude
+
+    @JsonIgnore
+    @ManyToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
+    @JoinTable(
+            name = "charge_include_products",
+            joinColumns = @JoinColumn(name = "charge_id"),
+            inverseJoinColumns = @JoinColumn(name = "charge_condition_id")
+    )
+    private Set<ChargeCondition> includes = new HashSet<>();
+
+    @JsonIgnore
+    @ManyToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
+    @JoinTable(
+            name = "charge_exclude_products",
+            joinColumns = @JoinColumn(name = "charge_id"),
+            inverseJoinColumns = @JoinColumn(name = "charge_condition_id")
+    )
+    private Set<ChargeCondition> excludes = new HashSet<>();
+
+}