use std::path::PathBuf;

use crate::rpcgit::commit::types::CommitStats;
use ::session::OptionalUser;
use api::http::{Path, Query, State};
use api::rest::AppResponseData;

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

#[derive(Debug, Clone, serde::Deserialize, utoipa::IntoParams)]
pub struct StatsQuery {
    pub revision: String,
    #[serde(default)]
    pub path: Option<String>,
}

#[utoipa::path(
    get,
    path = "/repos/{space_name}/{repo_name}/commits/stats",
    tag = "commits",
    description = "统计指定提交的文件变更与增删行数，可限定到单个路径。",
    params(crate::handler::RepoPath, StatsQuery),
    responses(
        (status = 200, description = "commit stats")
    )
)]
pub async fn commit_stats(
    State(service): State<GitService>,
    OptionalUser(viewer): OptionalUser,
    Path(path): Path<crate::handler::RepoPath>,
    Query(query): Query<StatsQuery>,
) -> Result<AppResponseData<CommitStats>, ApiError> {
    let (ctx, _) = handler::resolve_reader(
        &service,
        viewer,
        path.space_name.clone(),
        path.repo_name.clone(),
    )
    .await?;
    let out = service
        .commit_stats(&ctx, query.revision, query.path.map(PathBuf::from))
        .await
        .map_err(GitApiError::from)?;
    Ok(AppResponseData::ok(out))
}