# ReceiptVerifier
Verify iTunes receipt with the App Store.
[](https://travis-ci.org/linjunpop/receipt_verifier)
[](https://hex.pm/packages/receipt_verifier)
[](https://codebeat.co/projects/github-com-linjunpop-receipt_verifier-master)
[](http://inch-ci.org/github/linjunpop/receipt_verifier)
## Installation
If [available in Hex](https://hex.pm/docs/publish), the package can be installed as:
1. Add receipt_verifier to your list of dependencies in `mix.exs`:
```elixir
def deps do
[{:receipt_verifier, "~> 0.5.0"}]
end
```
2. Ensure receipt_verifier is started before your application:
```elixir
def application do
[applications: [:receipt_verifier]]
end
```
## Usage
### Configuration
> you can ignore this if you dont have auto-renewable product
Follow [this guide](https://developer.apple.com/library/content/documentation/LanguagesUtilities/Conceptual/iTunesConnectInAppPurchase_Guide/Chapters/CreatingInAppPurchaseProducts.html#//apple_ref/doc/uid/TP40013727-CH3-SW2) to generate a shared secret, then config the `:receipt_verifier` application with:
```elixir
use Mix.Config
config :receipt_verifier,
shared_secret: "my-secret"
```
### Verify the receipt with the App Store server.
```elixir
iex> ReceiptVerifier.verify(base64_encoded_receipt_data)
...> %ReceiptVerifier.ResponseData{app_receipt: %ReceiptVerifier.AppReceipt{adam_id: 0,
app_item_id: 0, application_version: "1241",
bundle_id: "com.sumiapp.GridDiary", download_id: 0,
in_app: [%ReceiptVerifier.IAPReceipt{expires_date: nil,
is_trial_period: false,
original_purchase_date: %DateTime{calendar: Calendar.ISO, day: 17, hour: 6,
microsecond: {491000, 6}, minute: 52, month: 1, second: 13, std_offset: 0,
time_zone: "Etc/UTC", utc_offset: 0, year: 1970, zone_abbr: "UTC"},
original_transaction_id: "1000000118990828",
product_id: "com.sumiapp.GridDiary.pro",
purchase_date: %DateTime{calendar: Calendar.ISO, day: 17, hour: 7,
microsecond: {546000, 6}, minute: 33, month: 1, second: 48, std_offset: 0,
time_zone: "Etc/UTC", utc_offset: 0, year: 1970, zone_abbr: "UTC"},
quantity: 1, transaction_id: "1000000118990828",
web_order_line_item_id: nil},
%ReceiptVerifier.IAPReceipt{expires_date: nil, is_trial_period: false,
original_purchase_date: %DateTime{calendar: Calendar.ISO, day: 17, hour: 7,
microsecond: {546000, 6}, minute: 33, month: 1, second: 48, std_offset: 0,
time_zone: "Etc/UTC", utc_offset: 0, year: 1970, zone_abbr: "UTC"},
original_transaction_id: "1000000122102348",
product_id: "com.sumiapp.griddiary.test",
purchase_date: %DateTime{calendar: Calendar.ISO, day: 17, hour: 7,
microsecond: {546000, 6}, minute: 33, month: 1, second: 48, std_offset: 0,
time_zone: "Etc/UTC", utc_offset: 0, year: 1970, zone_abbr: "UTC"},
quantity: 1, transaction_id: "1000000122102348",
web_order_line_item_id: nil}], original_application_version: "1.0",
original_purchase_date: %DateTime{calendar: Calendar.ISO, day: 16, hour: 22,
microsecond: {400000, 6}, minute: 2, month: 1, second: 20, std_offset: 0,
time_zone: "Etc/UTC", utc_offset: 0, year: 1970, zone_abbr: "UTC"},
receipt_creation_date: %DateTime{calendar: Calendar.ISO, day: 17, hour: 7,
microsecond: {546000, 6}, minute: 33, month: 1, second: 48, std_offset: 0,
time_zone: "Etc/UTC", utc_offset: 0, year: 1970, zone_abbr: "UTC"},
receipt_type: "ProductionSandbox",
request_date: %DateTime{calendar: Calendar.ISO, day: 18, hour: 2,
microsecond: {590831, 6}, minute: 47, month: 1, second: 30, std_offset: 0,
time_zone: "Etc/UTC", utc_offset: 0, year: 1970, zone_abbr: "UTC"},
version_external_identifier: 0}, base64_latest_app_receipt: nil,
latest_iap_receipts: []}
```
### Error handling
If there is error, `ReceiptVerifier.verify/1`
will return `{:error, %ReceiptVerifier.Error{code: code, message: msg}}`.
An example:
```elixir
{:error, %ReceiptVerifier.Error{code: 21002, message: "The data in the receipt-data property was malformed or missing."}}
```
