use actix_web::{HttpResponse, web};

use crate::api::response::{ApiErrorResponse, ApiResponse};
use crate::error::AppError;
use crate::models::users::UserNotifySetting;
use crate::service::AppService;
use crate::service::user::notify::UpdateUserNotifySettingParams;
use crate::session::Session;

/// Update user notification settings
///
/// Updates the authenticated user's notification preferences.
/// Requires authentication.
///
/// Updatable fields:
/// - email_notifications: Enable/disable email notifications
/// - web_notifications: Enable/disable web push notifications
/// - mention_notifications: Enable/disable @mention notifications
/// - review_notifications: Enable/disable code review notifications
/// - security_notifications: Enable/disable security notifications
/// - marketing_emails: Enable/disable marketing emails
/// - digest_frequency: Digest email frequency ("realtime", "daily", "weekly", "off")
///
/// All fields are optional; only provided fields are updated.
/// Returns the updated notification settings.
#[utoipa::path(
    put,
    path = "/api/v1/user/notifications",
    tag = "User",
    operation_id = "userUpdateNotifications",
    request_body(
        content = UpdateUserNotifySettingParams,
        description = "Notification settings update parameters (all fields optional)",
        content_type = "application/json"
    ),
    responses(
        (status = 200, description = "Notification settings updated successfully. Returns all updated preferences.", body = ApiResponse<UserNotifySetting>),
        (status = 400, description = "Invalid parameters: unsupported digest frequency", body = ApiErrorResponse),
        (status = 401, description = "Authentication required or session expired", body = ApiErrorResponse),
        (status = 500, description = "Internal server error", body = ApiErrorResponse),
    ),
    security(
        ("session_cookie" = [])
    )
)]
pub async fn update_notifications(
    service: web::Data<AppService>,
    session: Session,
    params: web::Json<UpdateUserNotifySettingParams>,
) -> Result<HttpResponse, AppError> {
    let settings = service
        .user
        .user_update_notify_setting(&session, params.into_inner())
        .await?;
    Ok(HttpResponse::Ok().json(ApiResponse::new(settings)))
}