use actix_web::{HttpResponse, web};
use serde::Deserialize;
use utoipa::IntoParams;

use crate::api::response::{ApiErrorResponse, ApiResponse};
use crate::error::AppError;
use crate::models::repos::RepoMember;
use crate::service::AppService;
use crate::service::repo::members::AddRepoMemberParams;
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,
}

/// Add a member to a repository
///
/// Grants a user access to the repository with a specific role.
/// Requires Admin role or higher in the repository.
///
/// Requirements:
/// - User must exist in the system
/// - User must be a member of the workspace
/// - Role must be one of: "read", "write", "admin" (cannot assign "owner")
///
/// Returns the created member record with user information and role.
#[utoipa::path(
    post,
    path = "/api/v1/workspaces/{workspace_name}/repos/{repo_name}/members",
    tag = "Repos",
    operation_id = "repoAddMember",
    params(PathParams),
    request_body(
        content = AddRepoMemberParams,
        description = "Member addition parameters",
        content_type = "application/json"
    ),
    responses(
        (status = 201, description = "Member added successfully. Returns the newly created member record with user information and role.", body = ApiResponse<RepoMember>),
        (status = 400, description = "Invalid parameters: invalid role or user doesn't exist", body = ApiErrorResponse),
        (status = 401, description = "Authentication required or session expired", body = ApiErrorResponse),
        (status = 403, description = "Insufficient permissions (requires Admin role or higher)", body = ApiErrorResponse),
        (status = 404, description = "Repository, workspace, or user not found", body = ApiErrorResponse),
        (status = 409, description = "User is already a member of this repository", body = ApiErrorResponse),
        (status = 500, description = "Internal server error", body = ApiErrorResponse),
    ),
    security(
        ("session_cookie" = [])
    )
)]
pub async fn add_member(
    service: web::Data<AppService>,
    session: Session,
    path: web::Path<PathParams>,
    params: web::Json<AddRepoMemberParams>,
) -> Result<HttpResponse, AppError> {
    let member = service
        .repo
        .repo_add_member(
            &session,
            &path.workspace_name,
            &path.repo_name,
            params.into_inner(),
        )
        .await?;

    Ok(HttpResponse::Created().json(ApiResponse::new(member)))
}