use axum::Json;
use axum::extract::{Path, State};
use jwt::extractor::AuthUser;
use uuid::Uuid;

use crate::error::RepoResult;
use crate::features::RepoService;
use crate::features::compare::CompareView;

#[utoipa::path(
    get,
    path = "/repo/{channel_id}/{repo_id}/compare/{base}...{head}",
    tag = "repo",
    responses((status = 200, description = "Compare two refs", body = CompareView)),
    security(("bearer_auth" = []))
)]
pub(crate) async fn handler(
    State(svc): State<RepoService>,
    AuthUser { claims }: AuthUser,
    Path((_, repo_id, base_dot_head)): Path<(Uuid, Uuid, String)>,
) -> RepoResult<Json<CompareView>> {
    let (base, head) = base_dot_head
        .split_once("...")
        .ok_or_else(|| crate::error::RepoError::BadRequest("expected '<base>...<head>'".into()))?;
    let view = svc.compare(claims.sub, repo_id, base, head).await?;
    Ok(Json(view))
}