cognitox 0.1.1

AWS Cognito User Pools emulator for local development
Documentation 
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//! AdminDeleteUserAttributes API implementation
//!
//! <https://docs.aws.amazon.com/cognito-user-identity-pools/latest/APIReference/API_AdminDeleteUserAttributes.html>

use chrono::Utc;
use serde::Deserialize;
use serde_json::{Value, json};

use crate::{
    error::{AppError, Result},
    storage::Storage,
    types::UserPoolId,
};

#[derive(Debug, Deserialize)]
#[serde(rename_all = "PascalCase")]
struct Request {
    user_pool_id: UserPoolId,
    username: String,
    user_attribute_names: Vec<String>,
}

pub async fn handler(storage: &Storage, body: Value) -> Result<Value> {
    let req: Request = serde_json::from_value(body)
        .map_err(|e| AppError::InvalidParameter(format!("Invalid request: {}", e)))?;

    storage
        .get_user_pool(&req.user_pool_id)
        .await
        .ok_or(AppError::UserPoolNotFound)?;

    let mut user = storage
        .get_user_by_username(&req.user_pool_id, &req.username)
        .await
        .ok_or(AppError::UserNotFound)?;

    // Remove specified attributes
    user.attributes
        .retain(|attr| !req.user_attribute_names.contains(&attr.name));

    // Clear special fields if they are in the deletion list
    for attr_name in &req.user_attribute_names {
        match attr_name.as_str() {
            "email" => user.email = None,
            "phone_number" => user.phone_number = None,
            _ => {}
        }
    }

    user.last_modified_date = Utc::now();

    storage.update_user(user).await;

    Ok(json!({}))
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::action::user::admin_create_user;
    use crate::action::user::admin_get_user;
    use crate::action::user_pool::create_user_pool;
    use serde_json::json;

    #[tokio::test]
    async fn test_admin_delete_user_attributes_success() {
        let storage = Storage::new();

        let pool = create_user_pool::handler(&storage, json!({"PoolName": "test"}))
            .await
            .unwrap();
        let pool_id = pool["UserPool"]["Id"].as_str().unwrap();

        admin_create_user::handler(
            &storage,
            json!({
                "UserPoolId": pool_id,
                "Username": "testuser",
                "UserAttributes": [
                    {"Name": "email", "Value": "test@example.com"},
                    {"Name": "custom:role", "Value": "admin"}
                ]
            }),
        )
        .await
        .unwrap();

        let result = handler(
            &storage,
            json!({
                "UserPoolId": pool_id,
                "Username": "testuser",
                "UserAttributeNames": ["custom:role"]
            }),
        )
        .await;

        assert!(result.is_ok());
        assert_eq!(result.unwrap(), json!({}));

        // Verify the attribute was deleted
        let user = admin_get_user::handler(
            &storage,
            json!({
                "UserPoolId": pool_id,
                "Username": "testuser"
            }),
        )
        .await
        .unwrap();

        let attrs = user["UserAttributes"].as_array().unwrap();
        assert!(attrs.iter().all(|a| a["Name"] != "custom:role"));
        // Email should still exist
        assert!(attrs.iter().any(|a| a["Name"] == "email"));
    }

    #[tokio::test]
    async fn test_admin_delete_user_attributes_user_not_found() {
        let storage = Storage::new();

        let pool = create_user_pool::handler(&storage, json!({"PoolName": "test"}))
            .await
            .unwrap();
        let pool_id = pool["UserPool"]["Id"].as_str().unwrap();

        let result = handler(
            &storage,
            json!({
                "UserPoolId": pool_id,
                "Username": "nonexistent",
                "UserAttributeNames": ["email"]
            }),
        )
        .await;

        assert!(result.is_err());
        assert!(matches!(result.unwrap_err(), AppError::UserNotFound));
    }

    #[tokio::test]
    async fn test_admin_delete_user_attributes_pool_not_found() {
        let storage = Storage::new();

        let result = handler(
            &storage,
            json!({
                "UserPoolId": "local_nonexistent",
                "Username": "testuser",
                "UserAttributeNames": ["email"]
            }),
        )
        .await;

        assert!(result.is_err());
        assert!(matches!(result.unwrap_err(), AppError::UserPoolNotFound));
    }
}