use ::session::Session;
use export::http::{Path, State};
use export::rest::AppResponseData;

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

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

#[utoipa::path(
    get,
    path = "/repos/{space_name}/{repo_name}/rev/{revision}",
    tag = "commits",
    description = "将分支、标签、短 SHA 或相对修订表达式解析为对象 ID。",
    params(RevPath),
    responses(
        (status = 200, description = "parse revision", body = AppResponseData<String>)
    )
)]
pub async fn rev_parse(
    State(service): State<GitService>,
    session: Session,
    Path(path): Path<RevPath>,
) -> Result<AppResponseData<String>, ApiError> {
    let _ = handler::resolve_reader(
        &service,
        &session,
        path.space_name.clone(),
        path.repo_name.clone(),
    )
    .await?;
    let out = service
        .rev_parse(path.space_name, path.repo_name, path.revision)
        .await
        .map_err(GitApiError::from)?;
    Ok(AppResponseData::ok(out))
}