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 label_id: uuid::Uuid,
}

/// Delete a label
///
/// Permanently removes an issue label from a repository.
/// Requires Admin role in the repository.
///
/// Effects:
/// - Label is permanently deleted
/// - All issue-label relations using this label are removed
///
/// Returns success message on completion.
#[utoipa::path(
    delete,
    path = "/api/v1/workspaces/{workspace_name}/repos/{repo_name}/issues/labels/{label_id}",
    tag = "Issues",
    operation_id = "issueDeleteLabel",
    params(PathParams),
    responses(
        (status = 200, description = "Label deleted successfully.", body = ApiResponse<String>),
        (status = 401, description = "Authentication required or session expired", body = ApiErrorResponse),
        (status = 403, description = "Insufficient permissions (requires Admin role)", body = ApiErrorResponse),
        (status = 404, description = "Repository, workspace, or label not found", body = ApiErrorResponse),
        (status = 500, description = "Internal server error", body = ApiErrorResponse),
    ),
    security(("session_cookie" = []))
)]
pub async fn delete_label(
    service: web::Data<AppService>,
    session: Session,
    path: web::Path<PathParams>,
) -> Result<HttpResponse, AppError> {
    service
        .issue
        .issue_delete_label(
            &session,
            &path.workspace_name,
            &path.repo_name,
            path.label_id,
        )
        .await?;
    Ok(HttpResponse::Ok().json(ApiResponse::new("Label deleted successfully".to_string())))
}