use axum::Json;
use axum::extract::{Path, State};
use export::rest::AppResponseData;
use jwt::Session;
use serde::{Deserialize, Serialize};

use crate::errors::{ApiError, GitApiError};
use crate::handler;
use crate::service::GitService;
use crate::service::refs::UpdateRefResultDto;

#[derive(Debug, Clone, serde::Deserialize, utoipa::IntoParams)]
pub struct RefPath {
    pub space_name: String,
    pub repo_name: String,
    pub name: String,
}

#[derive(Debug, Clone, Serialize, Deserialize, utoipa::ToSchema)]
pub struct RefUpdateBody {
    pub new_oid: String,
    pub expected_oid: Option<String>,
}

#[utoipa::path(
    patch,
    path = "/repos/{space_name}/{repo_name}/refs/{name}",
    tag = "refs",
    description = "更新完全限定引用的目标对象，可选 expected_oid 提供 CAS 语义。",
    params(RefPath),
    request_body = RefUpdateBody,
    responses(
        (status = 200, description = "update ref", body = AppResponseData<UpdateRefResultDto>)
    )
)]
pub async fn refs_update(
    State(service): State<GitService>,
    session: Session,
    Path(path): Path<RefPath>,
    Json(body): Json<RefUpdateBody>,
) -> Result<AppResponseData<UpdateRefResultDto>, ApiError> {
    let _ = handler::require_writer(
        &service,
        &session,
        path.space_name.clone(),
        path.repo_name.clone(),
    )
    .await?;
    let out = service
        .refs_update(
            path.space_name,
            path.repo_name,
            path.name,
            body.new_oid,
            body.expected_oid,
        )
        .await
        .map_err(GitApiError::from)?;
    Ok(AppResponseData::ok(out))
}