use actix_web::{HttpResponse, web};

use crate::api::response::{ApiErrorResponse, ApiResponse};
use crate::error::AppError;
use crate::service::AppService;
use crate::service::user::account::{UploadUserAvatarParams, UserAvatarResponse};
use crate::session::Session;

/// Upload user avatar
///
/// Uploads a new avatar image for the authenticated user.
/// Requires authentication.
///
/// Parameters:
/// - data: Raw avatar image bytes (PNG, JPEG, or WebP, max 5MB)
/// - content_type: MIME type of the image (e.g., "image/png")
/// - file_name: Original file name (used to infer file extension)
///
/// Effects:
/// - Avatar image is stored in S3-compatible object storage
/// - Previous avatar is deleted from storage
/// - User's avatar URL is updated
///
/// Returns the new avatar URL and storage key.
#[utoipa::path(
    post,
    path = "/api/v1/user/account/avatar",
    tag = "User",
    operation_id = "userUploadAvatar",
    request_body(
        content = UploadUserAvatarParams,
        description = "Avatar upload parameters",
        content_type = "application/json"
    ),
    responses(
        (status = 200, description = "Avatar uploaded successfully. Returns the new avatar URL and storage key.", body = ApiResponse<UserAvatarResponse>),
        (status = 400, description = "Invalid parameters: unsupported file type or image too large", body = ApiErrorResponse),
        (status = 401, description = "Authentication required or session expired", body = ApiErrorResponse),
        (status = 404, description = "User not found", body = ApiErrorResponse),
        (status = 500, description = "Internal server error or S3 storage failure", body = ApiErrorResponse),
    ),
    security(
        ("session_cookie" = [])
    )
)]
pub async fn upload_avatar(
    service: web::Data<AppService>,
    session: Session,
    params: web::Json<UploadUserAvatarParams>,
) -> Result<HttpResponse, AppError> {
    let response = service
        .user
        .user_upload_avatar(&session, params.into_inner())
        .await?;
    Ok(HttpResponse::Ok().json(ApiResponse::new(response)))
}