use axum::extract::{Path, Query, State};
use export::rest::AppResponseData;
use gitbaby::diff::types::NumStat;
use session::Session;

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

#[derive(Debug, Clone, serde::Deserialize, utoipa::IntoParams)]
pub struct DiffBaseHeadQuery {
    pub base: String,
    pub head: String,
}

#[utoipa::path(
    get,
    path = "/repos/{space_name}/{repo_name}/diff/stats",
    tag = "diffs",
    params(
        crate::handler::RepoPath,
        DiffBaseHeadQuery,
    ),
    responses(
        (status = 200, description = "diff stats")
    )
)]
pub async fn diff_stats(
    State(service): State<GitService>,
    session: Session,
    Path(path): Path<crate::handler::RepoPath>,
    Query(q): Query<DiffBaseHeadQuery>,
) -> Result<AppResponseData<Vec<NumStat>>, ApiError> {
    let _ = resolve_reader(&service, &session, path.space_name.clone(), path.repo_name.clone()).await?;
    let out = service
        .diff_stats(
            path.space_name,
            path.repo_name,
            q.base,
            q.head,
            DiffOptionsDto::default(),
        )
        .await
        .map_err(GitApiError::from)?;
    Ok(AppResponseData::ok(out))
}