Merge pull request #541 from belyakov-am/feat/checkout-session-retrie…

…ve-line-items

Add `retrieve_line_items` function for `CheckoutSession`

src/resources/checkout_session_ext.rs

@@ -2,6 +2,31 @@ use crate::client::{Client, Response};
 use crate::ids::CheckoutSessionId;
 use crate::params::Expand;
 use crate::resources::CheckoutSession;
+use crate::{CheckoutSessionItem, List};
+
+/// The parameters for `CheckoutSession::retrieve_line_items`.
+#[derive(Clone, Debug, serde::Serialize, Default)]
+pub struct RetrieveCheckoutSessionLineItems {
+    /// A cursor for use in pagination.
+    ///
+    /// `ending_before` is an object ID that defines your place in the list.
+    /// For instance, if you make a list request and receive 100 objects, starting with `obj_bar`, your subsequent call can include `ending_before=obj_bar` in order to fetch the previous page of the list.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub ending_before: Option<CheckoutSessionId>,
+
+    /// A limit on the number of objects to be returned.
+    ///
+    /// Limit can range between 1 and 100, and the default is 10.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub limit: Option<u64>,
+
+    /// A cursor for use in pagination.
+    ///
+    /// `starting_after` is an object ID that defines your place in the list.
+    /// For instance, if you make a list request and receive 100 objects, ending with `obj_foo`, your subsequent call can include `starting_after=obj_foo` in order to fetch the next page of the list.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub starting_after: Option<CheckoutSessionId>,
+}
 
 impl CheckoutSession {
     /// Retrieves a Session object.
@@ -21,4 +46,15 @@ impl CheckoutSession {
     pub fn expire(client: &Client, id: &CheckoutSessionId) -> Response<CheckoutSession> {
         client.post(&format!("/checkout/sessions/{}/expire", id))
     }
+
+    /// Retrieves a Checkout Session's line items
+    ///
+    /// For more details see <https://docs.stripe.com/api/checkout/sessions/line_items>
+    pub fn retrieve_line_items(
+        client: &Client,
+        id: &CheckoutSessionId,
+        params: &RetrieveCheckoutSessionLineItems,
+    ) -> Response<List<CheckoutSessionItem>> {
+        client.get_query(&format!("/checkout/sessions/{}/line_items", id), &params)
+    }
 }