From d291cf0d1bf375e96fda822543d5ceb29dc67010 Mon Sep 17 00:00:00 2001
From: Nicolai Ort <info@nicolai-ort.com>
Date: Sat, 30 Jan 2021 18:32:01 +0100
Subject: [PATCH] Added address class and errors

ref #1
---
 src/errors/AddressErrors.ts | 57 ++++++++++++++++++++++++++
 src/models/Address.ts       | 80 +++++++++++++++++++++++++++++++++++++
 2 files changed, 137 insertions(+)
 create mode 100644 src/errors/AddressErrors.ts
 create mode 100644 src/models/Address.ts

diff --git a/src/errors/AddressErrors.ts b/src/errors/AddressErrors.ts
new file mode 100644
index 0000000..300bb31
--- /dev/null
+++ b/src/errors/AddressErrors.ts
@@ -0,0 +1,57 @@
+import { IsString } from 'class-validator';
+import { BadRequestError } from 'routing-controllers';
+
+/**
+ * Error to throw when an address's postal code fails validation.
+ */
+export class AddressPostalCodeInvalidError extends BadRequestError {
+	@IsString()
+	name = "AddressPostalCodeInvalidError"
+
+	@IsString()
+	message = "The postal code you provided is invalid. \n Please check if your postal code follows the postal code validation guidelines."
+}
+
+/**
+ * Error to throw when an non-empty address's first line isn't set.
+ */
+export class AddressFirstLineEmptyError extends BadRequestError {
+	@IsString()
+	name = "AddressFirstLineEmptyError"
+
+	@IsString()
+	message = "You provided a empty first address line. \n If you want an empty address please set all propertys to null. \n For non-empty addresses the following fields have to be set: address1, postalcode, city, country"
+}
+
+/**
+ * Error to throw when an non-empty address's postal code isn't set.
+ */
+export class AddressPostalCodeEmptyError extends BadRequestError {
+	@IsString()
+	name = "AddressPostalCodeEmptyError"
+
+	@IsString()
+	message = "You provided a empty postal code. \n If you want an empty address please set all propertys to null. \n For non-empty addresses the following fields have to be set: address1, postalcode, city, country"
+}
+
+/**
+ * Error to throw when an non-empty address's city isn't set.
+ */
+export class AddressCityEmptyError extends BadRequestError {
+	@IsString()
+	name = "AddressCityEmptyError"
+
+	@IsString()
+	message = "You provided a empty city. \n If you want an empty address please set all propertys to null. \n For non-empty addresses the following fields have to be set: address1, postalcode, city, country"
+}
+
+/**
+ * Error to throw when an non-empty address's country isn't set.
+ */
+export class AddressCountryEmptyError extends BadRequestError {
+	@IsString()
+	name = "AddressCountryEmptyError"
+
+	@IsString()
+	message = "You provided a empty country. \n If you want an empty address please set all propertys to null. \n For non-empty addresses the following fields have to be set: address1, postalcode, city, country"
+}
\ No newline at end of file
diff --git a/src/models/Address.ts b/src/models/Address.ts
new file mode 100644
index 0000000..dc66f10
--- /dev/null
+++ b/src/models/Address.ts
@@ -0,0 +1,80 @@
+import {
+  IsPostalCode,
+  IsString
+} from "class-validator";
+import ValidatorJS from 'validator';
+import { config } from '../../config';
+import { AddressCityEmptyError, AddressCountryEmptyError, AddressFirstLineEmptyError, AddressPostalCodeEmptyError, AddressPostalCodeInvalidError } from '../../errors/AddressErrors';
+
+/**
+ * Defines the Address class.
+ * Implemented this way to prevent any formatting differences.
+*/
+export class Address {
+  /**
+   * The address's first line.
+   * Containing the street and house number.
+   */
+  @IsString()
+  address1?: string;
+
+  /**
+   * The address's second line.
+   * Containing optional information.
+   */
+  @IsString()
+  address2?: string;
+
+  /**
+   * The address's postal code.
+   * This will get checked against the postal code syntax for the configured country.
+   */
+  @IsString()
+  @IsPostalCode(config.postalcode_validation_countrycode)
+  postalcode: string;
+
+  /**
+   * The address's city.
+   */
+  @IsString()
+  city: string;
+
+  /**
+   * The address's country.
+   */
+  @IsString()
+  country: string;
+
+  public reset() {
+    this.address1 = null;
+    this.address2 = null;
+    this.city = null;
+    this.country = null;
+    this.postalcode = null;
+  }
+
+  /**
+   * Checks if this is a valid address
+   */
+  public static isValidAddress(address: Address): Boolean {
+    if (address == null) { return false; }
+    if (address.address1 == null || address.city == null || address.country == null || address.postalcode == null) { return false; }
+    if (ValidatorJS.isPostalCode(address.postalcode, config.postalcode_validation_countrycode) == false) { return false; }
+    return true;
+  }
+
+  /**
+   * This function validates addresses.
+   * This is a workaround for non-existant class validation for embedded entities.
+   * @param address The address that shall get validated.
+   */
+  public static validate(address: Address) {
+    if (address == null) { return; }
+    if (address.address1 == null && address.city == null && address.country == null && address.postalcode == null) { return; }
+    if (address.address1 == null) { throw new AddressFirstLineEmptyError(); }
+    if (address.postalcode == null) { throw new AddressPostalCodeEmptyError(); }
+    if (address.city == null) { throw new AddressCityEmptyError(); }
+    if (address.country == null) { throw new AddressCountryEmptyError(); }
+    if (ValidatorJS.isPostalCode(address.postalcode.toString(), config.postalcode_validation_countrycode) == false) { throw new AddressPostalCodeInvalidError(); }
+  }
+}