이메일 검증 로직 구현

rook/Cargo.toml

@@ -22,6 +22,7 @@ tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 shuttle-axum = "0.55.0"
 shuttle-runtime = { version = "0.55.0", default-features = false } # see https://docs.shuttle.dev/docs/logs#default-tracing-subscriber
 validator = "0.20"
+secrecy = { version = "0.8", features = ["serde"] }
 
 [dev-dependencies]
 serial_test = "3.0.0"

rook/src/domain/subscriber_email.rs

@@ -1,7 +1,7 @@
 use serde::Deserialize;
 use validator::ValidateEmail;
 
-#[derive(Debug, Deserialize)]
+#[derive(Debug, Deserialize, Clone)]
 pub struct SubscriberEmail(String);
 
 impl SubscriberEmail {

rook/src/email_client.rs

@@ -0,0 +1,71 @@
+use crate::domain::SubscriberEmail;
+use reqwest::Client;
+use secrecy::{ExposeSecret, Secret};
+use std::time::Duration;
+
+#[derive(Clone)]
+pub struct EmailClient {
+    http_client: Client,
+    base_url: String,
+    sender: SubscriberEmail,
+    authorization_token: Secret<String>,
+}
+
+impl EmailClient {
+    pub fn new(
+        base_url: String,
+        sender: SubscriberEmail,
+        authorization_token: Secret<String>,
+        timeout: Duration,
+    ) -> Self {
+        let http_client = Client::builder().timeout(timeout).build().unwrap();
+        Self {
+            http_client,
+            base_url,
+            sender,
+            authorization_token,
+        }
+    }
+
+    pub async fn send_email(
+        &self,
+        recipient: SubscriberEmail,
+        subject: String,
+        html_content: String,
+        text_content: String,
+    ) -> Result<(), String> {
+        let url = format!("{}/email", self.base_url);
+        let request_body = SendEmailRequest {
+            from: self.sender.as_ref().to_owned(),
+            to: recipient.as_ref().to_owned(),
+            subject: subject.to_owned(),
+            html_body: html_content.to_owned(),
+            text_body: text_content.to_owned(),
+        };
+
+        let _ = self
+            .http_client
+            .post(&url)
+            .header(
+                "X-Postmark-Server-Token",
+                self.authorization_token.expose_secret(),
+            )
+            .json(&request_body)
+            .send()
+            .await
+            .map_err(|e| format!("Failed to send email: {}", e))?
+            .error_for_status();
+
+        Ok(())
+    }
+}
+
+#[derive(serde::Serialize)]
+#[serde(rename_all = "PascalCase")]
+struct SendEmailRequest {
+    from: String,
+    to: String,
+    subject: String,
+    html_body: String,
+    text_body: String,
+}

rook/src/lib.rs

@@ -1,9 +1,11 @@
 pub mod domain;
+pub mod email_client;
 pub mod git;
 pub mod link;
 pub mod schedule;
 
 pub use domain::*;
+pub use email_client::*;
 pub use git::*;
 pub use link::*;
 pub use schedule::*;