From 651b9487c1467a5be5aa44726a6b4d1f606dcc70 Mon Sep 17 00:00:00 2001
From: Santo Cariotti <santo@dcariotti.me>
Date: Tue, 16 Mar 2021 14:17:45 +0100
Subject: feat: create and search email

---
 src/email/models.rs | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 src/email/routes.rs | 55 ++++++++++++++++++++++++++++++++++++---
 2 files changed, 126 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/email/models.rs b/src/email/models.rs
index 477092d..ed46026 100644
--- a/src/email/models.rs
+++ b/src/email/models.rs
@@ -1,11 +1,14 @@
 use crate::db::get_client;
-use crate::errors::AppError;
+use crate::errors::{AppError, AppErrorType};
 
 use deadpool_postgres::Pool;
 use serde::{Deserialize, Serialize};
 use tokio_pg_mapper::FromTokioPostgresRow;
 use tokio_pg_mapper_derive::PostgresMapper;
 
+use hex;
+use md5::{Digest, Md5};
+
 #[derive(Serialize, Deserialize, PostgresMapper)]
 #[pg_mapper(table = "email")]
 /// Emails model
@@ -35,4 +38,74 @@ impl Email {
 
         Ok(emails)
     }
+
+    /// Search an email
+    pub async fn search(
+        pool: Pool,
+        email: &String,
+    ) -> Result<Email, AppError> {
+        let client = get_client(pool.clone()).await.unwrap();
+
+        let statement =
+            client.prepare("SELECT * FROM email WHERE email=$1").await?;
+
+        let email = client
+            .query_opt(&statement, &[&email])
+            .await?
+            .map(|row| Email::from_row_ref(&row).unwrap());
+
+        match email {
+            Some(email) => Ok(email),
+            None => Err(AppError {
+                error_type: AppErrorType::NotFoundError,
+                cause: None,
+                message: Some("Email not found".to_string()),
+            }),
+        }
+    }
+
+    /// Create new email
+    pub async fn create(
+        pool: Pool,
+        data: &EmailData,
+    ) -> Result<Email, AppError> {
+        // Search an email  that matches with that string, because if it's
+        // exists, the server cannot create a clone
+        match Email::search(pool.clone(), &data.email).await {
+            Ok(_) => {
+                return Err(AppError {
+                    message: Some("Email already exists".to_string()),
+                    cause: Some("".to_string()),
+                    error_type: AppErrorType::AuthorizationError,
+                });
+            }
+            Err(_) => {}
+        };
+
+        let client = get_client(pool.clone()).await.unwrap();
+
+        let mut hasher = Md5::new();
+        hasher.update(&data.email.as_bytes());
+        let hash_final = hasher.finalize();
+
+        let digest = hex::encode(&hash_final.as_slice());
+
+        let statement = client
+            .prepare("INSERT INTO email VALUES ($1, $2) RETURNING *")
+            .await?;
+
+        let email = client
+            .query_opt(&statement, &[&data.email, &digest])
+            .await?
+            .map(|row| Email::from_row_ref(&row).unwrap());
+
+        match email {
+            Some(email) => Ok(email),
+            None => Err(AppError {
+                message: Some("Error creating a new email".to_string()),
+                cause: Some("Unknown error".to_string()),
+                error_type: AppErrorType::DbError,
+            }),
+        }
+    }
 }
diff --git a/src/email/routes.rs b/src/email/routes.rs
index 06b74fb..14299eb 100644
--- a/src/email/routes.rs
+++ b/src/email/routes.rs
@@ -1,7 +1,9 @@
+use std::collections::HashMap;
+
 use crate::config::AppState;
-use crate::email::models::Email;
+use crate::email::models::{Email, EmailData};
 use crate::errors::AppErrorResponse;
-use actix_web::{web, HttpResponse, Responder};
+use actix_web::{web, HttpRequest, HttpResponse, Responder};
 use slog::info;
 
 /// Endpoint used for retrieve all emails
@@ -18,9 +20,56 @@ async fn index(state: web::Data<AppState>) -> impl Responder {
     }
 }
 
+// Endpoint used for create new email
+async fn create_email(
+    payload: web::Json<EmailData>,
+    state: web::Data<AppState>,
+) -> impl Responder {
+    info!(state.log, "POST /email/");
+    let result = Email::create(state.pool.clone(), &payload).await;
+
+    result
+        .map(|email| HttpResponse::Created().json(email))
+        .map_err(|e| e)
+}
+
+// Endpoint used for email search
+async fn search_email(
+    req: HttpRequest,
+    state: web::Data<AppState>,
+) -> impl Responder {
+    let query =
+        web::Query::<HashMap<String, String>>::from_query(req.query_string())
+            .unwrap();
+    let email = match query.get("q") {
+        Some(x) => x,
+        None => {
+            return HttpResponse::NotFound().json(AppErrorResponse {
+                detail: "No email found".to_string(),
+            });
+        }
+    };
+    let result = Email::search(state.pool.clone(), email).await;
+    info!(state.log, "GET /email/search?q={}", email);
+
+    match result {
+        Ok(email) => HttpResponse::Ok().json(email),
+        _ => HttpResponse::NotFound().json(AppErrorResponse {
+            detail: "No email found".to_string(),
+        }),
+    }
+}
 pub fn config(cfg: &mut web::ServiceConfig) {
     cfg.service(
         web::scope("/email")
-            .service(web::resource("{_:/?}").route(web::get().to(index))),
+            .service(
+                web::resource("{_:/?}")
+                    .route(web::get().to(index))
+                    .route(web::post().to(create_email)),
+            )
+            .service(
+                web::resource("/search{_:/?}")
+                    .route(web::get().to(search_email)),
+            ),
     );
 }
-- 
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