// Copyright (c) 2026 Probo Inc <hello@probo.com>.
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
// PERFORMANCE OF THIS SOFTWARE.

package session

import (
	"context"

	"github.com/99designs/gqlgen/graphql"
	"go.probo.inc/probo/pkg/server/api/authn"
	"go.probo.inc/probo/pkg/server/gqlutils"
)

// Directive enforces that the request carries a real session. It is meant to
// be combined with @authentication(required: PRESENT): @authentication handles
// the "must be authenticated" check, while @sessionOnly additionally rejects
// API key authentication, which also carries an identity but no session.
func Directive(ctx context.Context, obj any, next graphql.Resolver) (any, error) {
	if authn.SessionFromContext(ctx) == nil {
		return nil, gqlutils.Forbiddenf(
			ctx,
			"this resource can only be accessed with session authentication, not API key authentication",
		)
	}

	return next(ctx)
}