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 {
    /// Workspace name (unique identifier)
    pub workspace_name: String,
    /// Repository name (unique within the workspace)
    pub repo_name: String,
}

/// Unstar a repository
///
/// Removes the current user from the repository's stargazers list.
/// Requires read access to the repository.
///
/// Effects:
/// - User is removed from the repository's stargazers
/// - Repository star count is decremented
///
/// Returns success message on completion. Idempotent operation (unstarring an unstarred repository is a no-op).
#[utoipa::path(
    delete,
    path = "/api/v1/workspaces/{workspace_name}/repos/{repo_name}/star",
    tag = "Repos",
    operation_id = "repoUnstar",
    params(PathParams),
    responses(
        (status = 200, description = "Repository unstarred successfully.", body = ApiResponse<String>),
        (status = 401, description = "Authentication required or session expired", body = ApiErrorResponse),
        (status = 403, description = "Insufficient permissions to access this repository", body = ApiErrorResponse),
        (status = 404, description = "Repository or workspace not found", body = ApiErrorResponse),
        (status = 500, description = "Internal server error", body = ApiErrorResponse),
    ),
    security(
        ("session_cookie" = [])
    )
)]
pub async fn unstar_repo(
    service: web::Data<AppService>,
    session: Session,
    path: web::Path<PathParams>,
) -> Result<HttpResponse, AppError> {
    service
        .repo
        .repo_unstar(&session, &path.workspace_name, &path.repo_name)
        .await?;

    Ok(HttpResponse::Ok().json(ApiResponse::new(
        "Repository unstarred successfully".to_string(),
    )))
}