// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2025 Meta */

#include <test_progs.h>
#include <network_helpers.h>
#include "prepare.skel.h"

static bool check_prepared(struct bpf_object *obj)
{
        bool is_prepared = true;
        const struct bpf_map *map;

        bpf_object__for_each_map(map, obj) {
                if (bpf_map__fd(map) < 0)
                        is_prepared = false;
        }

        return is_prepared;
}

static void test_prepare_no_load(void)
{
        struct prepare *skel;
        int err;
        LIBBPF_OPTS(bpf_test_run_opts, topts,
                    .data_in = &pkt_v4,
                    .data_size_in = sizeof(pkt_v4),
        );

        skel = prepare__open();
        if (!ASSERT_OK_PTR(skel, "prepare__open"))
                return;

        if (!ASSERT_FALSE(check_prepared(skel->obj), "not check_prepared"))
                goto cleanup;

        err = bpf_object__prepare(skel->obj);

        if (!ASSERT_TRUE(check_prepared(skel->obj), "check_prepared"))
                goto cleanup;

        if (!ASSERT_OK(err, "bpf_object__prepare"))
                goto cleanup;

cleanup:
        prepare__destroy(skel);
}

static void test_prepare_load(void)
{
        struct prepare *skel;
        int err, prog_fd;
        LIBBPF_OPTS(bpf_test_run_opts, topts,
                    .data_in = &pkt_v4,
                    .data_size_in = sizeof(pkt_v4),
        );

        skel = prepare__open();
        if (!ASSERT_OK_PTR(skel, "prepare__open"))
                return;

        if (!ASSERT_FALSE(check_prepared(skel->obj), "not check_prepared"))
                goto cleanup;

        err = bpf_object__prepare(skel->obj);
        if (!ASSERT_OK(err, "bpf_object__prepare"))
                goto cleanup;

        err = prepare__load(skel);
        if (!ASSERT_OK(err, "prepare__load"))
                goto cleanup;

        if (!ASSERT_TRUE(check_prepared(skel->obj), "check_prepared"))
                goto cleanup;

        prog_fd = bpf_program__fd(skel->progs.program);
        if (!ASSERT_GE(prog_fd, 0, "prog_fd"))
                goto cleanup;

        err = bpf_prog_test_run_opts(prog_fd, &topts);
        if (!ASSERT_OK(err, "test_run_opts err"))
                goto cleanup;

        if (!ASSERT_OK(topts.retval, "test_run_opts retval"))
                goto cleanup;

        ASSERT_EQ(skel->bss->err, 0, "err");

cleanup:
        prepare__destroy(skel);
}

void test_prepare(void)
{
        if (test__start_subtest("prepare_load"))
                test_prepare_load();
        if (test__start_subtest("prepare_no_load"))
                test_prepare_no_load();
}