add model for invoice detail model

src/models/invoicedetail.ts

@@ -0,0 +1,79 @@
+import {
+  DataTypes,
+  Model,
+  InferAttributes,
+  InferCreationAttributes,
+  CreationOptional,
+} from 'sequelize';
+import { sequelize } from './index'; 
+import { InvoiceDetailInterface } from '../shared/interfaces/invoiceDetail.interface';
+import Invoice from './invoice'; 
+
+class InvoiceDetail extends Model<InferAttributes<InvoiceDetail>, InferCreationAttributes<InvoiceDetail>> implements InvoiceDetailInterface {
+  declare id?: CreationOptional<number>;
+  declare invoice_id: number;
+  declare pw_portfolio_id?: number;
+  declare pw_building_id?: number;
+  declare pw_unit_id?: number;
+  declare pw_gl_account_id?: number;
+  declare amount: number;
+  declare description?: string;
+
+}
+
+InvoiceDetail.init(
+  {
+    id: {
+      type: DataTypes.INTEGER,
+      autoIncrement: true,
+      primaryKey: true,
+    },
+    invoice_id: {
+      type: DataTypes.INTEGER,
+      allowNull: false,
+      references: {
+        model: Invoice, 
+        key: 'id',
+      },
+      onDelete: 'CASCADE', 
+    },
+    pw_portfolio_id: {
+      type: DataTypes.INTEGER,
+      allowNull: true,
+    },
+    pw_building_id: {
+      type: DataTypes.INTEGER,
+      allowNull: true,
+    },
+    pw_unit_id: {
+      type: DataTypes.INTEGER,
+      allowNull: true,
+    },
+    pw_gl_account_id: {
+      type: DataTypes.INTEGER,
+      allowNull: true,
+      defaultValue: null, 
+    },
+    amount: {
+      type: DataTypes.DECIMAL(10, 2),
+      allowNull: false,
+    },
+    description: {
+      type: DataTypes.TEXT,
+      allowNull: true,
+    },
+  },
+  {
+    sequelize,
+    tableName: 'invoice_details',
+    underscored: true,
+    freezeTableName: true,
+    timestamps: true,
+    createdAt: 'created_at',
+    updatedAt: 'updated_at',
+  }
+);
+
+InvoiceDetail.belongsTo(Invoice, { foreignKey: 'invoice_id' });
+
+export default InvoiceDetail;

src/shared/interfaces/invoiceDetail.interface.ts

@@ -0,0 +1,10 @@
+export interface InvoiceDetailInterface {
+    id?: number; 
+    invoice_id: number;
+    pw_portfolio_id?: number;
+    pw_building_id?: number;
+    pw_unit_id?: number;
+    pw_gl_account_id?: number;
+    amount: number;
+    description?: string;
+  }