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

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

#[derive(Debug, Clone, serde::Deserialize, utoipa::ToSchema)]
pub struct PatchApplyBody {
    pub patch: String,
    pub base: String,
}

#[utoipa::path(
    post,
    path = "/repos/{space_name}/{repo_name}/patch/apply",
    tag = "patches",
    description = "预演补丁在指定基线上能否应用，不修改仓库。",
    params(crate::handler::RepoPath),
    request_body = PatchApplyBody,
    responses(
        (status = 200, description = "apply patch", body = AppResponseData<AppliedPatchDto>)
    )
)]
pub async fn patch_apply(
    State(service): State<GitService>,
    session: Session,
    Path(path): Path<crate::handler::RepoPath>,
    Json(body): Json<PatchApplyBody>,
) -> Result<AppResponseData<AppliedPatchDto>, ApiError> {
    let _ = handler::resolve_reader(
        &service,
        &session,
        path.space_name.clone(),
        path.repo_name.clone(),
    )
    .await?;
    let out = service
        .patch_apply(path.space_name, path.repo_name, body.patch, body.base)
        .await
        .map_err(GitApiError::from)?;
    Ok(AppResponseData::ok(out))
}