/**
 * AutoForge DAG Engine — Basic Tests
 *
 * Minimal test suite without a framework — uses assert.
 */

#include "dag_engine.h"
#include <cassert>
#include <iostream>

void test_version() {
    std::string ver = autoforge::DAGEngine::version();
    assert(!ver.empty());
    std::cout << "[PASS] version(): " << ver << std::endl;
}

void test_add_and_count() {
    autoforge::DAGEngine engine;
    assert(engine.node_count() == 0);

    engine.add_node({"a", "Node A", "test", {}});
    assert(engine.node_count() == 1);

    engine.add_node({"b", "Node B", "test", {"a"}});
    assert(engine.node_count() == 2);

    std::cout << "[PASS] add_node / node_count" << std::endl;
}

void test_clear() {
    autoforge::DAGEngine engine;
    engine.add_node({"a", "Node A", "test", {}});
    engine.add_node({"b", "Node B", "test", {}});
    assert(engine.node_count() == 2);

    engine.clear();
    assert(engine.node_count() == 0);

    std::cout << "[PASS] clear()" << std::endl;
}

void test_validate_acyclic() {
    autoforge::DAGEngine engine;
    engine.add_node({"a", "A", "test", {}});
    engine.add_node({"b", "B", "test", {"a"}});
    engine.add_node({"c", "C", "test", {"a", "b"}});
    assert(engine.validate() == true);

    std::cout << "[PASS] validate() — acyclic" << std::endl;
}

void test_execute() {
    autoforge::DAGEngine engine;
    engine.add_node({"a", "A", "test", {}});
    engine.add_node({"b", "B", "test", {"a"}});
    assert(engine.execute() == true);

    std::cout << "[PASS] execute()" << std::endl;
}

int main() {
    std::cout << "==============================" << std::endl;
    std::cout << "  DAG Engine Tests" << std::endl;
    std::cout << "==============================" << std::endl;

    test_version();
    test_add_and_count();
    test_clear();
    test_validate_acyclic();
    test_execute();

    std::cout << std::endl;
    std::cout << "All tests passed!" << std::endl;
    return 0;
}