use axum::extract::{Path, Query, State};
use export::rest::AppResponseData;
use session_layer::Session;

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

#[derive(Debug, Clone, serde::Deserialize, utoipa::IntoParams)]
pub struct RefsBranchesQuery {
    #[serde(default)]
    pub skip: Option<u64>,
    #[serde(default)]
    pub limit: Option<u64>,
}

#[utoipa::path(
    get,
    path = "/repos/{space_name}/{repo_name}/refs/branches",
    tag = "refs",
    description = "返回分支引用摘要及保护标记，供内部 Git 流程分页使用。",
    params(crate::handler::RepoPath, RefsBranchesQuery),
    responses(
        (status = 200, description = "list branch refs", body = AppResponseData<Vec<BranchInfoDto>>)
    )
)]
pub async fn refs_branches(
    State(service): State<GitService>,
    session: Session,
    Path(path): Path<crate::handler::RepoPath>,
    Query(query): Query<RefsBranchesQuery>,
) -> Result<AppResponseData<Vec<BranchInfoDto>>, ApiError> {
    let _ = resolve_reader(
        &service,
        &session,
        path.space_name.clone(),
        path.repo_name.clone(),
    )
    .await?;
    let out = service
        .refs_branches(
            path.space_name,
            path.repo_name,
            query.skip.unwrap_or(0),
            query.limit.unwrap_or(0),
        )
        .await
        .map_err(GitApiError::from)?;
    Ok(AppResponseData::ok(out))
}