From 0751e1439a83010a1dffe2fbc045fce7134df833 Mon Sep 17 00:00:00 2001
From: avicenan <avicena.n@gmail.com>
Date: Fri, 27 Mar 2026 10:13:40 +0700
Subject: [PATCH] feat(emr): add prescription and prescription item entities

---
 src/entity/emr/emr_prescription.ts      | 71 +++++++++++++++++++++++++
 src/entity/emr/emr_prescription_item.ts | 66 +++++++++++++++++++++++
 2 files changed, 137 insertions(+)
 create mode 100644 src/entity/emr/emr_prescription.ts
 create mode 100644 src/entity/emr/emr_prescription_item.ts

diff --git a/src/entity/emr/emr_prescription.ts b/src/entity/emr/emr_prescription.ts
new file mode 100644
index 0000000..50e2936
--- /dev/null
+++ b/src/entity/emr/emr_prescription.ts
@@ -0,0 +1,71 @@
+import {
+    Entity,
+    PrimaryGeneratedColumn,
+    Column,
+    CreateDateColumn,
+    UpdateDateColumn,
+    DeleteDateColumn,
+    ManyToOne,
+    OneToMany,
+    JoinColumn,
+} from "typeorm";
+
+import { EmrPatient } from "./emr_patient";
+import { Room } from "../room";
+import { User } from "../users";
+import { EmrRegistration } from "./emr_registration";
+import { EmrPrescriptionItem } from "./emr_prescription_item";
+
+/**
+ * Prescription entity.
+ * Header information for a medication prescription: order number, patient, doctor, rooms, registration.
+ */
+@Entity("emr_prescription", { schema: "emr" })
+export class EmrPrescription {
+    @PrimaryGeneratedColumn("uuid")
+    id: string;
+
+    @ManyToOne(() => EmrRegistration, { onDelete: "NO ACTION", nullable: true })
+    @JoinColumn({ name: "registration_id" })
+    registration: EmrRegistration | null;
+
+    @ManyToOne(() => EmrPatient, { onDelete: "NO ACTION" })
+    @JoinColumn({ name: "patient_id" })
+    patient: EmrPatient;
+
+    @ManyToOne(() => User, { onDelete: "NO ACTION", nullable: true })
+    @JoinColumn({ name: "doctor_id" })
+    doctor: User | null;
+
+    @ManyToOne(() => Room, { onDelete: "NO ACTION", nullable: true })
+    @JoinColumn({ name: "room_id" })
+    room: Room | null;
+
+    @ManyToOne(() => Room, { onDelete: "NO ACTION", nullable: true })
+    @JoinColumn({ name: "referring_room_id" })
+    referring_room: Room | null;
+
+    @OneToMany(() => EmrPrescriptionItem, (item) => item.prescription, { cascade: true })
+    items: EmrPrescriptionItem[];
+
+    @Column()
+    @CreateDateColumn()
+    created_at: Date;
+
+    @Column({ nullable: true, length: 256 })
+    created_by: string;
+
+    @Column({ nullable: true })
+    @UpdateDateColumn()
+    updated_at: Date;
+
+    @Column({ nullable: true, length: 256 })
+    updated_by: string;
+
+    @Column({ nullable: true })
+    @DeleteDateColumn()
+    deleted_at: Date;
+
+    @Column({ nullable: true, length: 256 })
+    deleted_by: string;
+}
\ No newline at end of file
diff --git a/src/entity/emr/emr_prescription_item.ts b/src/entity/emr/emr_prescription_item.ts
new file mode 100644
index 0000000..8f13ba1
--- /dev/null
+++ b/src/entity/emr/emr_prescription_item.ts
@@ -0,0 +1,66 @@
+import {
+    Entity,
+    PrimaryGeneratedColumn,
+    Column,
+    CreateDateColumn,
+    UpdateDateColumn,
+    DeleteDateColumn,
+    ManyToOne,
+    JoinColumn,
+} from "typeorm";
+
+import { ItemMaster } from "../pharmacy/item_master";
+import { UsageInstructions } from "../pharmacy/usage_instructions";
+import { UsageTime } from "../pharmacy/usage_time";
+import { EmrPrescription } from "./emr_prescription";
+
+/**
+ * Prescription items entity.
+ * Stores each medication item with quantity and usage instructions/timing for a prescription.
+ */
+@Entity("emr_prescription_items", { schema: "emr" })
+export class EmrPrescriptionItem {
+    @PrimaryGeneratedColumn("uuid")
+    id: string;
+
+    @ManyToOne(() => EmrPrescription, (prescription) => prescription.items, { onDelete: "CASCADE" })
+    @JoinColumn({ name: "prescription_id" })
+    prescription: EmrPrescription;
+
+    @ManyToOne(() => ItemMaster, { onDelete: "NO ACTION" })
+    @JoinColumn({ name: "item_master_id" })
+    item_master: ItemMaster;
+
+    @Column({ type: "int", nullable: false, default: 1 })
+    qty: number;
+
+    @ManyToOne(() => UsageInstructions, { onDelete: "NO ACTION", nullable: true })
+    @JoinColumn({ name: "usage_instruction_id" })
+    usage_instruction: UsageInstructions | null;
+
+    @ManyToOne(() => UsageTime, { onDelete: "NO ACTION", nullable: true })
+    @JoinColumn({ name: "usage_time_id" })
+    usage_time: UsageTime | null;
+
+    @Column()
+    @CreateDateColumn()
+    created_at: Date;
+
+    @Column({ nullable: true, length: 256 })
+    created_by: string;
+
+    @Column({ nullable: true })
+    @UpdateDateColumn()
+    updated_at: Date;
+
+    @Column({ nullable: true, length: 256 })
+    updated_by: string;
+
+    @Column({ nullable: true })
+    @DeleteDateColumn()
+    deleted_at: Date;
+
+    @Column({ nullable: true, length: 256 })
+    deleted_by: string;
+}
+