1 files changed, 111 insertions, 0 deletions
diff --git a/src/email/models.rs b/src/email/models.rs
new file mode 100644
index 0000000..ed46026
--- /dev/null
+++ b/src/email/models.rs
@@ -0,0 +1,111 @@
+use crate::db::get_client;
+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
+pub struct Email {
+    pub email: String,
+    pub hash_md5: String,
+}
+
+// Struct used to creare a new email
+#[derive(Serialize, Deserialize)]
+pub struct EmailData {
+    pub email: String,
+}
+
+impl Email {
+    /// Find all emails, returns email and its MD5 hash
+    pub async fn find_all(pool: Pool) -> Result<Vec<Email>, AppError> {
+        let client = get_client(pool.clone()).await.unwrap();
+        let statement = client.prepare("SELECT * FROM email").await?;
+
+        let emails = client
+            .query(&statement, &[])
+            .await?
+            .iter()
+            .map(|row| Email::from_row_ref(row).unwrap())
+            .collect::<Vec<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,
+            }),
+        }
+    }
+}