import {
  DataTypes,
  InferAttributes,
  InferCreationAttributes,
  Model,
  NonAttribute,
  Sequelize,
} from "sequelize";
import { CustomerInvoiceModel } from "./customer-invoice.model";

export type CustomerInvoiceItemCreationAttributes = InferCreationAttributes<
  CustomerInvoiceItemModel,
  { omit: "invoice" }
>;

export class CustomerInvoiceItemModel extends Model<
  InferAttributes<CustomerInvoiceItemModel>,
  InferCreationAttributes<CustomerInvoiceItemModel, { omit: "invoice" }>
> {
  declare item_id: string;
  declare invoice_id: string;

  declare position: number;

  declare description: string;

  declare quantity_value: number;
  declare quantity_scale: number;

  declare unit_amount_value: number;
  declare unit_amount_scale: number;

  // Subtotal
  declare subtotal_amount_value: number;
  declare subtotal_amount_scale: number;

  // Discount percentage
  declare discount_percentage_value: number;
  declare discount_percentage_scale: number;

  // Discount amount
  declare discount_amount_value: number;
  declare discount_amount_scale: number;

  // Taxable amount (base imponible)
  declare taxable_amount_value: number;
  declare taxable_amount_scale: number;

  // Total taxes amount / taxes total
  declare taxes_amount_value: number;
  declare taxes_amount_scale: number;

  // Total
  declare total_amount_value: number;
  declare total_amount_scale: number;

  declare invoice: NonAttribute<CustomerInvoiceModel>;

  static associate(database: Sequelize) {
    const { CustomerInvoiceModel, CustomerInvoiceItemModel } = database.models;

    CustomerInvoiceItemModel.belongsTo(CustomerInvoiceModel, {
      as: "customerInvoice",
      targetKey: "id",
      foreignKey: "invoice_id",
      onDelete: "CASCADE",
    });
  }
}

export default (database: Sequelize) => {
  CustomerInvoiceItemModel.init(
    {
      item_id: {
        type: new DataTypes.UUID(),
        primaryKey: true,
      },

      invoice_id: {
        type: new DataTypes.UUID(),
        allowNull: false,
      },

      position: {
        type: new DataTypes.MEDIUMINT().UNSIGNED,
        autoIncrement: false,
        allowNull: false,
      },

      description: {
        type: new DataTypes.TEXT(),
        allowNull: true,
        defaultValue: null,
      },

      quantity_value: {
        type: new DataTypes.BIGINT(),
        allowNull: true,
        defaultValue: null,
      },

      quantity_scale: {
        type: new DataTypes.SMALLINT(),
        allowNull: false,
        defaultValue: 2,
      },

      unit_amount_value: {
        type: new DataTypes.BIGINT(),
        allowNull: true,
        defaultValue: null,
      },

      unit_amount_scale: {
        type: new DataTypes.SMALLINT(),
        allowNull: false,
        defaultValue: 4,
      },

      subtotal_amount_value: {
        type: new DataTypes.BIGINT(), // importante: evita problemas de precisión con valores grandes
        allowNull: true,
        defaultValue: null,
      },

      subtotal_amount_scale: {
        type: new DataTypes.SMALLINT(),
        allowNull: false,
        defaultValue: 4,
      },

      discount_percentage_value: {
        type: new DataTypes.SMALLINT(),
        allowNull: true,
        defaultValue: null,
      },

      discount_percentage_scale: {
        type: new DataTypes.SMALLINT(),
        allowNull: false,
        defaultValue: 2,
      },

      discount_amount_value: {
        type: new DataTypes.BIGINT(), // importante: evita problemas de precisión con valores grandes
        allowNull: true,
        defaultValue: null,
      },

      discount_amount_scale: {
        type: new DataTypes.SMALLINT(),
        allowNull: false,
        defaultValue: 4,
      },

      taxable_amount_value: {
        type: new DataTypes.BIGINT(), // importante: evita problemas de precisión con valores grandes
        allowNull: true,
        defaultValue: null,
      },

      taxable_amount_scale: {
        type: new DataTypes.SMALLINT(),
        allowNull: false,
        defaultValue: 4,
      },

      taxes_amount_value: {
        type: new DataTypes.BIGINT(), // importante: evita problemas de precisión con valores grandes
        allowNull: true,
        defaultValue: null,
      },

      taxes_amount_scale: {
        type: new DataTypes.SMALLINT(),
        allowNull: false,
        defaultValue: 4,
      },

      total_amount_value: {
        type: new DataTypes.BIGINT(), // importante: evita problemas de precisión con valores grandes
        allowNull: true,
        defaultValue: null,
      },

      total_amount_scale: {
        type: new DataTypes.SMALLINT(),
        allowNull: false,
        defaultValue: 4,
      },
    },
    {
      sequelize: database,
      tableName: "customer_invoice_items",

      underscored: true,

      indexes: [{ name: "invoice_idx", fields: ["invoice_id"], unique: false }],

      whereMergeStrategy: "and", // <- cómo tratar el merge de un scope

      defaultScope: {},

      scopes: {},
    }
  );

  return CustomerInvoiceItemModel;
};