use actix_web::{HttpResponse, web};
use serde::{Deserialize, Serialize};

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

#[derive(Deserialize, Serialize, utoipa::ToSchema)]
pub struct AcceptInvitationRequest {
    /// The plaintext invitation token from the email link.
    pub token: String,
}

#[utoipa::path(
    post,
    path = "/api/v1/workspaces/invitations/accept",
    tag = "Workspaces",
    operation_id = "workspaceAcceptInvitation",
    summary = "Accept an invitation",
    description = "Accept a workspace invitation using the token from the invitation email. The authenticated user's verified email must match the invited email.",
    request_body(
        content = AcceptInvitationRequest,
        description = "Invitation token.",
        content_type = "application/json"
    ),
    responses(
        (status = 200, description = "Invitation accepted and user added as a member.", body = ApiResponse<WorkspaceInvitation>),
        (status = 400, description = "Invalid or expired invitation, or already a member.", body = ApiErrorResponse),
        (status = 401, description = "Unauthenticated or email mismatch.", body = ApiErrorResponse),
        (status = 500, description = "Database transaction failed.", body = ApiErrorResponse)
    )
)]
pub async fn handle(
    service: web::Data<AppService>,
    session: Session,
    params: web::Json<AcceptInvitationRequest>,
) -> Result<HttpResponse, AppError> {
    let data = service
        .workspace
        .workspace_accept_invitation(&session, &params.token)
        .await?;
    Ok(HttpResponse::Ok().json(ApiResponse::new(data)))
}