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

export type CustomerInvoiceCreationAttributes = InferCreationAttributes<
  CustomerInvoiceModel,
  { omit: "items" }
> & {
  items?: CustomerInvoiceItemCreationAttributes[];
};

export class CustomerInvoiceModel extends Model<
  InferAttributes<CustomerInvoiceModel>,
  InferCreationAttributes<CustomerInvoiceModel, { omit: "items" }>
> {
  declare id: string;
  declare company_id: string;

  declare status: string;
  declare series: string;
  declare invoice_number: string;
  declare invoice_date: string;
  declare operation_date: string;
  declare language_code: string;
  declare currency_code: string;

  declare notes: string;

  // 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 tax amount / taxes total
  declare tax_amount_value: number;
  declare tax_amount_scale: number;

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

  // Relaciones
  declare items: NonAttribute<CustomerInvoiceItemModel[]>;
  //declare customer: NonAttribute<CustomerInvoiceParticipant_Model[]>;

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

    CustomerInvoiceModel.hasMany(CustomerInvoiceItemModel, {
      as: "items",
      foreignKey: "invoice_id",
      sourceKey: "id",
      onDelete: "CASCADE",
      constraints: true,
    });
  }

  static hooks(database: Sequelize) {
    // Soft-cascade manual: al borrar una factura, marcamos items como borrados (paranoid).
    /*CustomerInvoiceModel.addHook("afterDestroy", async (invoice, options) => {
      if (!invoice?.id) return;
      await CustomerInvoiceItemModel.destroy({
        where: { invoice_id: invoice.id },
        individualHooks: true,
        transaction: options.transaction,
      });
    });*/
  }
}

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

      company_id: {
        type: DataTypes.UUID,
        allowNull: false,
      },

      status: {
        type: new DataTypes.STRING(),
        allowNull: false,
        defaultValue: "draft",
      },

      series: {
        type: new DataTypes.STRING(),
        allowNull: true,
        defaultValue: null,
      },

      invoice_number: {
        type: new DataTypes.STRING(),
        allowNull: true,
        defaultValue: null,
      },

      invoice_date: {
        type: new DataTypes.DATEONLY(),
        allowNull: true,
        defaultValue: null,
      },

      operation_date: {
        type: new DataTypes.DATEONLY(),
        allowNull: true,
        defaultValue: null,
      },

      language_code: {
        type: DataTypes.STRING(2),
        allowNull: false,
        defaultValue: "es",
      },

      currency_code: {
        type: new DataTypes.STRING(3),
        allowNull: false,
      },

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

      subtotal_amount_value: {
        type: new DataTypes.BIGINT(), // importante: evita problemas de precisión con valores grandes
        allowNull: false,
        defaultValue: 0,
      },
      subtotal_amount_scale: {
        type: new DataTypes.SMALLINT(),
        allowNull: false,
        defaultValue: 2,
      },

      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(),
        allowNull: true,
        defaultValue: null,
      },

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

      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: 2,
      },

      tax_amount_value: {
        type: new DataTypes.BIGINT(), // importante: evita problemas de precisión con valores grandes
        allowNull: true,
        defaultValue: null,
      },
      tax_amount_scale: {
        type: new DataTypes.SMALLINT(),
        allowNull: false,
        defaultValue: 2,
      },

      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: 2,
      },
    },
    {
      sequelize: database,
      tableName: "customer_invoices",

      underscored: true,
      paranoid: true, // softs deletes
      timestamps: true,

      createdAt: "created_at",
      updatedAt: "updated_at",
      deletedAt: "deleted_at",

      indexes: [
        { name: "company_idx", fields: ["company_id"], unique: false },
        { name: "idx_company_idx", fields: ["id", "company_id"], unique: true },
        { unique: true, fields: ["invoice_number"] },
      ],

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

      defaultScope: {},

      scopes: {},
    }
  );

  return CustomerInvoiceModel;
};