cognitox 0.1.1

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

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 MFAOption {
    #[allow(dead_code)]
    delivery_medium: Option<String>,
    #[allow(dead_code)]
    attribute_name: Option<String>,
}

#[derive(Debug, Deserialize)]
#[serde(rename_all = "PascalCase")]
struct Request {
    user_pool_id: UserPoolId,
    username: String,
    #[serde(rename = "MFAOptions")]
    #[allow(dead_code)]
    mfa_options: Vec<MFAOption>,
}

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)))?;

    // Verify user pool exists
    storage
        .get_user_pool(&req.user_pool_id)
        .await
        .ok_or(AppError::UserPoolNotFound)?;

    // Verify user exists
    storage
        .get_user_by_username(&req.user_pool_id, &req.username)
        .await
        .ok_or(AppError::UserNotFound)?;

    // Note: In a full implementation, we would store the MFA settings.
    // For the emulator, we accept the request but MFA is not enforced.

    Ok(json!({}))
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::action::user::sign_up;
    use crate::action::user_pool::{create_user_pool, create_user_pool_client};
    use serde_json::json;

    async fn setup_pool_and_user(storage: &Storage) -> (String, String) {
        let pool = create_user_pool::handler(storage, json!({"PoolName": "test"}))
            .await
            .unwrap();
        let pool_id = pool["UserPool"]["Id"].as_str().unwrap().to_string();

        let client = create_user_pool_client::handler(
            storage,
            json!({
                "UserPoolId": pool_id,
                "ClientName": "test-client"
            }),
        )
        .await
        .unwrap();
        let client_id = client["UserPoolClient"]["ClientId"].as_str().unwrap();

        let sign_up_result = sign_up::handler(
            storage,
            json!({
                "ClientId": client_id,
                "Username": "testuser",
                "Password": "Password123!"
            }),
        )
        .await
        .unwrap();

        let user_sub = sign_up_result["UserSub"].as_str().unwrap();
        let user_id = uuid::Uuid::parse_str(user_sub).unwrap();
        storage.confirm_user(&user_id).await;

        (pool_id, "testuser".to_string())
    }

    #[tokio::test]
    async fn test_admin_set_user_settings_success() {
        let storage = Storage::new();
        let (pool_id, username) = setup_pool_and_user(&storage).await;

        let result = handler(
            &storage,
            json!({
                "UserPoolId": pool_id,
                "Username": username,
                "MFAOptions": [
                    {
                        "DeliveryMedium": "SMS",
                        "AttributeName": "phone_number"
                    }
                ]
            }),
        )
        .await;

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

    #[tokio::test]
    async fn test_admin_set_user_settings_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",
                "MFAOptions": []
            }),
        )
        .await;

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

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

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

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