use crate::models::common::DEFAULT_REVISION;
use actix_web::{HttpResponse, web};
use serde::Deserialize;
use utoipa::IntoParams;

use crate::api::response::{ApiErrorResponse, ApiResponse};
use crate::error::AppError;
use crate::service::AppService;
use crate::session::Session;

#[derive(Debug, Deserialize, IntoParams)]
pub struct PathParams {
    pub workspace_name: String,
    pub repo_name: String,
    pub branch_name: String,
}

#[derive(Debug, Deserialize, IntoParams)]
pub struct QueryParams {
    pub base: Option<String>,
}

#[utoipa::path(
    get,
    path = "/api/v1/workspaces/{workspace_name}/repos/{repo_name}/git/branches/{branch_name}/compare",
    tag = "Git",
    operation_id = "gitCompareBranch",
    params(PathParams, QueryParams),
    responses(
        (status = 200, description = "Branch comparison", body = ApiResponse<crate::pb::repo::CompareBranchResponse>),
        (status = 401, description = "Unauthorized", body = ApiErrorResponse),
        (status = 404, description = "Not found", body = ApiErrorResponse),
    ),
    security(("session_cookie" = []))
)]
pub async fn git_compare_branch(
    service: web::Data<AppService>,
    session: Session,
    path: web::Path<PathParams>,
    query: web::Query<QueryParams>,
) -> Result<HttpResponse, AppError> {
    let base = query.base.as_deref().unwrap_or(DEFAULT_REVISION);
    let result = service
        .repo
        .git_compare_branches(
            &session,
            &path.workspace_name,
            &path.repo_name,
            &path.branch_name,
            base,
        )
        .await?;
    Ok(HttpResponse::Ok().json(ApiResponse::new(result)))
}