implement MongoDB user repository with async support

src/handlers/user/register.rs

@@ -19,7 +19,7 @@ impl RegisterPayload {
 }
 
 pub async fn register(Json(_payload): Json<RegisterPayload>) -> impl IntoResponse {
-    // TODO: Implement register logic
+    // TODO: Implement user registration logic
 
     (
         StatusCode::OK,

src/mongodb/models/user.rs

@@ -1,49 +1,98 @@
+// models/user.rs
 use bson::oid::ObjectId;
 use chrono::{DateTime, Utc};
 use serde::{Deserialize, Serialize};
 
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Debug, Serialize, Deserialize, Clone)]
 pub struct User {
-    #[serde(rename = "_id")]
-    id: ObjectId,
-    username: String,
-    email: String,
-    first_name: String,
-    last_name: String,
-    age: u32,
-    is_active: bool,
-    phone_number: String,
-    password: String,
-    salt: String,
-    created_at: DateTime<Utc>,
-    updated_at: DateTime<Utc>,
-    last_login: DateTime<Utc>,
-    role: String,
-    profile: Option<Profile>,
-    preferences: Option<Preferences>,
-    stats: Option<Stats>,
+    #[serde(rename = "_id", skip_serializing_if = "Option::is_none")]
+    pub id: Option<ObjectId>,
+    pub username: String,
+    pub email: String,
+    pub first_name: String,
+    pub last_name: String,
+    pub age: u32,
+    pub is_active: bool,
+    pub phone_number: String,
+    pub password: String,
+    pub salt: String,
+    #[serde(default = "chrono::Utc::now")]
+    pub created_at: DateTime<Utc>,
+    #[serde(default = "chrono::Utc::now")]
+    pub updated_at: DateTime<Utc>,
+    pub last_login: Option<DateTime<Utc>>,
+    pub role: String,
+    pub profile: Option<Profile>,
+    pub preferences: Option<Preferences>,
+    pub stats: Option<Stats>,
 }
 
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Debug, Serialize, Deserialize, Clone)]
 pub struct Profile {
-    avatar_url: String,
-    bio: String,
-    location: String,
-    website: String,
+    pub avatar_url: String,
+    pub bio: String,
+    pub location: String,
+    pub website: String,
 }
 
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Debug, Serialize, Deserialize, Clone)]
 pub struct Preferences {
-    theme: String,
-    language: String,
-    notifications_enabled: bool,
-    email_verified: bool,
+    pub theme: String,
+    pub language: String,
+    pub notifications_enabled: bool,
+    pub email_verified: bool,
 }
 
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Debug, Serialize, Deserialize, Clone)]
 pub struct Stats {
-    total_posts: u32,
-    total_comments: u32,
-    total_likes: u32,
-    account_age_days: u32,
+    pub total_posts: u32,
+    pub total_comments: u32,
+    pub total_likes: u32,
+    pub account_age_days: u32,
+}
+
+impl User {
+    pub fn new(username: String, email: String, password: String, salt: String) -> Self {
+        let now = chrono::Utc::now();
+
+        Self {
+            id: None,
+            username,
+            email,
+            first_name: String::new(),
+            last_name: String::new(),
+            age: 0,
+            is_active: true,
+            phone_number: String::new(),
+            password,
+            salt,
+            created_at: now,
+            updated_at: now,
+            last_login: None,
+            role: "user".to_string(),
+            profile: None,
+            preferences: None,
+            stats: None,
+        }
+    }
+
+    pub fn with_profile(mut self, profile: Profile) -> Self {
+        self.profile = Some(profile);
+        self
+    }
+
+    pub fn with_preferences(mut self, preferences: Preferences) -> Self {
+        self.preferences = Some(preferences);
+        self
+    }
+
+    pub fn with_stats(mut self, stats: Stats) -> Self {
+        self.stats = Some(stats);
+        self
+    }
+
+    pub fn update_last_login(&mut self) {
+        self.last_login = Some(chrono::Utc::now());
+        self.updated_at = chrono::Utc::now();
+    }
 }

src/mongodb/repositories/mongodb_user_repository.rs

@@ -0,0 +1,171 @@
+use async_trait::async_trait;
+use futures::TryStreamExt;
+use mongodb::bson::doc;
+use mongodb::options::FindOptions;
+use mongodb::Collection;
+use bson::oid::ObjectId;
+
+use crate::models::user::User;
+use super::user_repository::{UserRepository, UserError};
+
+pub struct MongoUserRepository {
+    collection: Collection<User>,
+}
+
+impl MongoUserRepository {
+    pub fn new(collection: Collection<User>) -> Self {
+        Self { collection }
+    }
+}
+
+#[async_trait]
+impl UserRepository for MongoUserRepository {
+    async fn create(&self, mut user: User) -> Result<User, UserError> {
+        // Validate required fields
+        if user.username.is_empty() {
+            return Err(UserError::ValidationError("Username is required".to_string()));
+        }
+        if user.email.is_empty() {
+            return Err(UserError::ValidationError("Email is required".to_string()));
+        }
+
+        // Check for existing users
+        if self.exists_by_username(user.username.clone()).await? {
+            return Err(UserError::DuplicateKey("username".to_string()));
+        }
+        if self.exists_by_email(user.email.clone()).await? {
+            return Err(UserError::DuplicateKey("email".to_string()));
+        }
+
+        // Set timestamps
+        let now = chrono::Utc::now();
+        user.created_at = now;
+        user.updated_at = now;
+        user.id = None; // Let MongoDB generate the ID
+        
+        let result = self.collection.insert_one(&user, None).await?;
+        
+        // Return the created user with the new ID
+        user.id = result.inserted_id.as_object_id();
+        Ok(user)
+    }
+
+    async fn get(&self, id: ObjectId) -> Result<User, UserError> {
+        let user = self.collection.find_one(doc! {"_id": id}, None).await?;
+        user.ok_or(UserError::NotFound)
+    }
+
+    async fn update(&self, id: ObjectId, mut user: User) -> Result<User, UserError> {
+        // Update the timestamp
+        user.updated_at = chrono::Utc::now();
+        user.id = Some(id);
+        
+        let result = self.collection.replace_one(doc! {"_id": id}, &user, None).await?;
+        
+        if result.matched_count == 0 {
+            return Err(UserError::NotFound);
+        }
+        
+        Ok(user)
+    }
+
+    async fn delete(&self, id: ObjectId) -> Result<(), UserError> {
+        let result = self.collection.delete_one(doc! {"_id": id}, None).await?;
+        
+        if result.deleted_count == 0 {
+            return Err(UserError::NotFound);
+        }
+        
+        Ok(())
+    }
+
+    async fn list(&self, limit: Option<i64>, skip: Option<u64>) -> Result<Vec<User>, UserError> {
+        let find_options = FindOptions::builder()
+            .limit(limit)
+            .skip(skip)
+            .build();
+
+        let cursor = self.collection.find(None, find_options).await?;
+        let users: Vec<User> = cursor.try_collect().await?;
+        Ok(users)
+    }
+
+    async fn search(&self, query: String) -> Result<Vec<User>, UserError> {
+        // Use regex for partial matching or text search
+        let filter = doc! {
+            "$or": [
+                {"username": {"$regex": &query, "$options": "i"}},
+                {"email": {"$regex": &query, "$options": "i"}},
+                {"first_name": {"$regex": &query, "$options": "i"}},
+                {"last_name": {"$regex": &query, "$options": "i"}}
+            ]
+        };
+        
+        let cursor = self.collection.find(filter, None).await?;
+        let users: Vec<User> = cursor.try_collect().await?;
+        Ok(users)
+    }
+
+    async fn count(&self) -> Result<u64, UserError> {
+        let count = self.collection.count_documents(None, None).await?;
+        Ok(count)
+    }
+
+    async fn count_by_name(&self, name: String) -> Result<u64, UserError> {
+        let filter = doc! {
+            "$or": [
+                {"first_name": &name},
+                {"last_name": &name}
+            ]
+        };
+        let count = self.collection.count_documents(filter, None).await?;
+        Ok(count)
+    }
+
+    async fn count_by_email(&self, email: String) -> Result<u64, UserError> {
+        let count = self.collection.count_documents(doc! {"email": email}, None).await?;
+        Ok(count)
+    }
+
+    async fn count_by_phone(&self, phone: String) -> Result<u64, UserError> {
+        let count = self.collection.count_documents(doc! {"phone_number": phone}, None).await?;
+        Ok(count)
+    }
+
+    async fn count_by_id(&self, id: ObjectId) -> Result<u64, UserError> {
+        let count = self.collection.count_documents(doc! {"_id": id}, None).await?;
+        Ok(count)
+    }
+
+    async fn find_by_email(&self, email: String) -> Result<Option<User>, UserError> {
+        let user = self.collection.find_one(doc! {"email": email}, None).await?;
+        Ok(user)
+    }
+
+    async fn find_by_username(&self, username: String) -> Result<Option<User>, UserError> {
+        let user = self.collection.find_one(doc! {"username": username}, None).await?;
+        Ok(user)
+    }
+
+    async fn exists_by_email(&self, email: String) -> Result<bool, UserError> {
+        let count = self.count_by_email(email).await?;
+        Ok(count > 0)
+    }
+
+    async fn exists_by_username(&self, username: String) -> Result<bool, UserError> {
+        let count = self.collection.count_documents(doc! {"username": username}, None).await?;
+        Ok(count > 0)
+    }
+
+    async fn get_active_users(&self) -> Result<Vec<User>, UserError> {
+        let cursor = self.collection.find(doc! {"is_active": true}, None).await?;
+        let users: Vec<User> = cursor.try_collect().await?;
+        Ok(users)
+    }
+
+    async fn get_users_by_role(&self, role: String) -> Result<Vec<User>, UserError> {
+        let cursor = self.collection.find(doc! {"role": role}, None).await?;
+        let users: Vec<User> = cursor.try_collect().await?;
+        Ok(users)
+    }
+}

src/mongodb/repositories/user_repository.rs

@@ -0,0 +1,53 @@
+use async_trait::async_trait;
+use bson::oid::ObjectId;
+use crate::models::user::User;
+
+// Define custom error type
+#[derive(Debug)]
+pub enum UserError {
+    MongoError(mongodb::error::Error),
+    NotFound,
+    ValidationError(String),
+    DuplicateKey(String),
+}
+
+impl std::fmt::Display for UserError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            UserError::MongoError(e) => write!(f, "MongoDB error: {}", e),
+            UserError::NotFound => write!(f, "User not found"),
+            UserError::ValidationError(msg) => write!(f, "Validation error: {}", msg),
+            UserError::DuplicateKey(field) => write!(f, "Duplicate key error: {}", field),
+        }
+    }
+}
+
+impl std::error::Error for UserError {}
+
+impl From<mongodb::error::Error> for UserError {
+    fn from(error: mongodb::error::Error) -> Self {
+        UserError::MongoError(error)
+    }
+}
+
+// Repository trait
+#[async_trait]
+pub trait UserRepository {
+    async fn create(&self, user: User) -> Result<User, UserError>;
+    async fn get(&self, id: ObjectId) -> Result<User, UserError>;
+    async fn update(&self, id: ObjectId, user: User) -> Result<User, UserError>;
+    async fn delete(&self, id: ObjectId) -> Result<(), UserError>;
+    async fn list(&self, limit: Option<i64>, skip: Option<u64>) -> Result<Vec<User>, UserError>;
+    async fn search(&self, query: String) -> Result<Vec<User>, UserError>;
+    async fn count(&self) -> Result<u64, UserError>;
+    async fn count_by_name(&self, name: String) -> Result<u64, UserError>;
+    async fn count_by_email(&self, email: String) -> Result<u64, UserError>;
+    async fn count_by_phone(&self, phone: String) -> Result<u64, UserError>;
+    async fn count_by_id(&self, id: ObjectId) -> Result<u64, UserError>;
+    async fn find_by_email(&self, email: String) -> Result<Option<User>, UserError>;
+    async fn find_by_username(&self, username: String) -> Result<Option<User>, UserError>;
+    async fn exists_by_email(&self, email: String) -> Result<bool, UserError>;
+    async fn exists_by_username(&self, username: String) -> Result<bool, UserError>;
+    async fn get_active_users(&self) -> Result<Vec<User>, UserError>;
+    async fn get_users_by_role(&self, role: String) -> Result<Vec<User>, UserError>;
+}