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use http::{
header::{ACCEPT, CONTENT_TYPE, USER_AGENT},
Method, StatusCode, Version,
};
use std::io;
use crate::endpoints::endpoint_prelude::*;
use crate::{
objects::{request_body::RequestBody, response_body::ResponseBody},
types::status::Status,
};
const URL_PRODUCTION: &str = "https://buy.itunes.apple.com/verifyReceipt";
const URL_SANDBOX: &str = "https://sandbox.itunes.apple.com/verifyReceipt";
#[derive(Debug, PartialEq, Eq)]
pub enum RetryReason {
ServiceUnavailable,
GotoSandbox,
TryAgainWithStatus(Status),
}
pub struct VerifyReceipt {
password: String,
receipt_data: ReceiptData,
exclude_old_transactions: Option<bool>,
goto_sandbox: bool,
retry_count: u8,
max_retry_count: u8,
}
impl VerifyReceipt {
pub fn new(
password: String,
receipt_data: ReceiptData,
exclude_old_transactions: Option<bool>,
) -> Self {
Self {
password,
receipt_data,
exclude_old_transactions,
goto_sandbox: false,
retry_count: 0,
max_retry_count: 3,
}
}
}
pub enum ReceiptData {
Bytes(Vec<u8>),
Base64String(String),
}
impl ReceiptData {
pub fn data(&self) -> String {
match self {
Self::Bytes(vec) => base64::encode(vec),
Self::Base64String(string) => string.to_owned(),
}
}
}
impl Endpoint for VerifyReceipt {
type ParseResponseOutput = ResponseBody;
type RetryReason = RetryReason;
fn render_request(&self) -> io::Result<Request<Body>> {
let url = if self.goto_sandbox {
URL_SANDBOX
} else {
URL_PRODUCTION
};
let receipt_data = self.receipt_data.data();
let body = RequestBody::new(
receipt_data.as_str(),
&self.password,
self.exclude_old_transactions,
);
let body_bytes = serde_json::to_vec(&body)?;
let request = Request::builder()
.method(Method::POST)
.uri(url)
.version(Version::HTTP_11)
.header(USER_AGENT, "curl/7.72.0")
.header(CONTENT_TYPE, "application/json")
.header(ACCEPT, "application/json")
.body(body_bytes)
.map_err(|err| io::Error::new(io::ErrorKind::Other, err))?;
Ok(request)
}
fn parse_response(
&mut self,
response: Response<Body>,
) -> io::Result<EndpointParseResponseOutput<Self::ParseResponseOutput, Self::RetryReason>> {
match response.status() {
StatusCode::OK => {}
StatusCode::SERVICE_UNAVAILABLE => {
return Ok(EndpointParseResponseOutput::Retryable(
RetryReason::ServiceUnavailable,
));
}
_ => {
return Err(io::Error::new(
io::ErrorKind::Other,
format!("status [{}] mismatch", response.status()),
));
}
}
let body: ResponseBody = serde_json::from_slice(response.body())?;
match &body {
ResponseBody::Success(_) => {}
ResponseBody::Error(body) => match &body.status {
Status::Error21007 => {
if self.goto_sandbox {
debug_assert!(false, "double goto sandbox");
} else {
self.goto_sandbox = true;
return Ok(EndpointParseResponseOutput::Retryable(
RetryReason::GotoSandbox,
));
}
}
Status::Error21002 | Status::Error21005 | Status::Error21009 => {
self.retry_count += 1;
if self.retry_count <= self.max_retry_count {
return Ok(EndpointParseResponseOutput::Retryable(
RetryReason::TryAgainWithStatus(body.status.to_owned()),
));
}
}
Status::InternalDataAccessError(_) => {
if body.is_retryable == Some(true) {
self.retry_count += 1;
if self.retry_count <= self.max_retry_count {
return Ok(EndpointParseResponseOutput::Retryable(
RetryReason::TryAgainWithStatus(body.status.to_owned()),
));
}
}
}
_ => {}
},
}
Ok(EndpointParseResponseOutput::Done(body))
}
}