From 97fbc899c12a0c66ac89a7feaa6d45d39239a746 Mon Sep 17 00:00:00 2001
From: Sahkal Poddar <sahkalplanet@gmail.com>
Date: Tue, 2 Apr 2024 17:45:08 +0530
Subject: [PATCH] feat(payment_link): Add payment info metadata to payment link
 (#4270)

Co-authored-by: hyperswitch-bot[bot] <148525504+hyperswitch-bot[bot]@users.noreply.github.com>
---
 crates/api_models/src/payments.rs             |  6 ++---
 crates/router/src/core/payment_link.rs        | 27 ++++++++++++++-----
 .../payment_link_initiate/payment_link.html   |  1 +
 crates/router/src/services/api.rs             |  8 ++++++
 4 files changed, 33 insertions(+), 9 deletions(-)

diff --git a/crates/api_models/src/payments.rs b/crates/api_models/src/payments.rs
index b719d1f7d1..2748ccbff4 100644
--- a/crates/api_models/src/payments.rs
+++ b/crates/api_models/src/payments.rs
@@ -4376,12 +4376,12 @@ pub struct PaymentLinkInitiateRequest {
 
 #[derive(Debug, serde::Serialize)]
 #[serde(untagged)]
-pub enum PaymentLinkData {
-    PaymentLinkDetails(PaymentLinkDetails),
+pub enum PaymentLinkData<'a> {
+    PaymentLinkDetails(&'a PaymentLinkDetails),
     PaymentLinkStatusDetails(PaymentLinkStatusDetails),
 }
 
-#[derive(Debug, serde::Serialize)]
+#[derive(Debug, serde::Serialize, Clone)]
 pub struct PaymentLinkDetails {
     pub amount: String,
     pub currency: api_enums::Currency,
diff --git a/crates/router/src/core/payment_link.rs b/crates/router/src/core/payment_link.rs
index 722aad26c0..94d8227989 100644
--- a/crates/router/src/core/payment_link.rs
+++ b/crates/router/src/core/payment_link.rs
@@ -187,7 +187,7 @@ pub async fn intiate_payment_link_flow(
             return_url: return_url.clone(),
         };
         let js_script = get_js_script(
-            api_models::payments::PaymentLinkData::PaymentLinkStatusDetails(payment_details),
+            &api_models::payments::PaymentLinkData::PaymentLinkStatusDetails(payment_details),
         )?;
         let payment_link_error_data = services::PaymentLinkStatusData {
             js_script,
@@ -215,13 +215,17 @@ pub async fn intiate_payment_link_flow(
         sdk_layout: payment_link_config.sdk_layout.clone(),
     };
 
-    let js_script = get_js_script(api_models::payments::PaymentLinkData::PaymentLinkDetails(
-        payment_details,
+    let js_script = get_js_script(&api_models::payments::PaymentLinkData::PaymentLinkDetails(
+        &payment_details,
     ))?;
+
+    let html_meta_tags = get_meta_tags_html(payment_details);
+
     let payment_link_data = services::PaymentLinkFormData {
         js_script,
         sdk_url: state.conf.payment_link.sdk_url.clone(),
         css_script,
+        html_meta_tags,
     };
     Ok(services::ApplicationResponse::PaymentLinkForm(Box::new(
         services::api::PaymentLinkAction::PaymentLinkFormData(payment_link_data),
@@ -232,8 +236,10 @@ pub async fn intiate_payment_link_flow(
 The get_js_script function is used to inject dynamic value to payment_link sdk, which is unique to every payment.
 */
 
-fn get_js_script(payment_details: api_models::payments::PaymentLinkData) -> RouterResult<String> {
-    let payment_details_str = serde_json::to_string(&payment_details)
+fn get_js_script(
+    payment_details: &api_models::payments::PaymentLinkData<'_>,
+) -> RouterResult<String> {
+    let payment_details_str = serde_json::to_string(payment_details)
         .change_context(errors::ApiErrorResponse::InternalServerError)
         .attach_printable("Failed to serialize PaymentLinkData")?;
     Ok(format!("window.__PAYMENT_DETAILS = {payment_details_str};"))
@@ -248,6 +254,15 @@ fn get_color_scheme_css(payment_link_config: api_models::admin::PaymentLinkConfi
     )
 }
 
+fn get_meta_tags_html(payment_details: api_models::payments::PaymentLinkDetails) -> String {
+    format!(
+        r#"<meta property="og:title" content="Payment request from {0}"/>
+        <meta property="og:description" content="{1}"/>"#,
+        payment_details.merchant_name,
+        payment_details.merchant_description.unwrap_or_default()
+    )
+}
+
 fn validate_sdk_requirements(
     pub_key: Option<String>,
     currency: Option<api_models::enums::Currency>,
@@ -562,7 +577,7 @@ pub async fn get_payment_link_status(
         return_url,
     };
     let js_script = get_js_script(
-        api_models::payments::PaymentLinkData::PaymentLinkStatusDetails(payment_details),
+        &api_models::payments::PaymentLinkData::PaymentLinkStatusDetails(payment_details),
     )?;
     let payment_link_status_data = services::PaymentLinkStatusData {
         js_script,
diff --git a/crates/router/src/core/payment_link/payment_link_initiate/payment_link.html b/crates/router/src/core/payment_link/payment_link_initiate/payment_link.html
index 732e331892..6b487395c6 100644
--- a/crates/router/src/core/payment_link/payment_link_initiate/payment_link.html
+++ b/crates/router/src/core/payment_link/payment_link_initiate/payment_link.html
@@ -3,6 +3,7 @@
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    {{rendered_meta_tag_html}}
     <title>Payments requested by HyperSwitch</title>
     {{ preload_link_tags }}
     <link rel="preconnect" href="https://fonts.gstatic.com">
diff --git a/crates/router/src/services/api.rs b/crates/router/src/services/api.rs
index 95eb4a44c8..5a139d8da3 100644
--- a/crates/router/src/services/api.rs
+++ b/crates/router/src/services/api.rs
@@ -853,6 +853,7 @@ pub struct PaymentLinkFormData {
     pub js_script: String,
     pub css_script: String,
     pub sdk_url: String,
+    pub html_meta_tags: String,
 }
 
 #[derive(Debug, Eq, PartialEq, Clone, serde::Serialize, serde::Deserialize)]
@@ -1977,6 +1978,13 @@ pub fn build_payment_link_html(
 
     let _ = tera.add_raw_template("payment_link", &html_template);
 
+    context.insert("rendered_meta_tag_html", &payment_link_data.html_meta_tags);
+
+    context.insert(
+        "preload_link_tags",
+        &get_preload_link_html_template(&payment_link_data.sdk_url),
+    );
+
     context.insert(
         "preload_link_tags",
         &get_preload_link_html_template(&payment_link_data.sdk_url),