package space.anyi.codesandbox;

import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import space.anyi.codesandbox.docker.DockerClientFactory;
import space.anyi.serve.entity.contest.Submission;

import java.util.List;

import static org.junit.jupiter.api.Assertions.assertEquals;

/**
 * @fileName: DockerCodeSandBoxTest
 * @projectName: serve
 * @package: space.anyi.codesandbox
 * @author: yangyi
 * @date:14/10/2026 6:00 pm
 * @description: Docker 代码沙箱测试，需本机 Docker daemon 运行中，判题镜像缺失时自动拉取
 */
class DockerCodeSandBoxTest {

    private static DockerCodeSandBox dockerCodeSandBox;

    @BeforeAll
    static void setUp() {
        dockerCodeSandBox = new DockerCodeSandBox(new DockerClientFactory().dockerClient());
    }

    @Test
    void testAcAndMultiLineOutput() {
        String code = "public class Main {\n" +
                "    public static void main(String[] args) {\n" +
                "        java.util.Scanner in = new java.util.Scanner(System.in);\n" +
                "        int a = in.nextInt();\n" +
                "        int b = in.nextInt();\n" +
                "        System.out.println(a + b);\n" +
                "    }\n" +
                "}";
        List<TestCase> testCases = List.of(new TestCase(1L, "1 2", "3"), new TestCase(2L, "2 2", "4"));
        CodeContext codeContext = new CodeContext(1L, code, "java", 2000L, 256 * 1024L, testCases);
        CodeResponse codeResponse = dockerCodeSandBox.process(codeContext);
        assertEquals(Submission.STATUS_AC, codeResponse.status());
        assertEquals(2, codeResponse.testCaseResponses().size());
    }

    @Test
    void testCompileError() {
        String code = "public class Main {\n" +
                "    public static void main(String[] args) {\n" +
                "        int x = \"类型不匹配\";\n" +
                "    }\n" +
                "}";
        CodeContext codeContext = new CodeContext(2L, code, "java", 2000L, 256 * 1024L,
                List.of(new TestCase(1L, "", "")));
        CodeResponse codeResponse = dockerCodeSandBox.process(codeContext);
        assertEquals(Submission.STATUS_CE, codeResponse.status());
    }

    @Test
    void testRuntimeError() {
        String code = "public class Main {\n" +
                "    public static void main(String[] args) {\n" +
                "        int x = 1 / 0;\n" +
                "        System.out.println(x);\n" +
                "    }\n" +
                "}";
        CodeContext codeContext = new CodeContext(3L, code, "java", 2000L, 256 * 1024L,
                List.of(new TestCase(1L, "", "")));
        CodeResponse codeResponse = dockerCodeSandBox.process(codeContext);
        assertEquals(Submission.STATUS_RE, codeResponse.status());
    }

    @Test
    void testWrongAnswer() {
        String code = "public class Main {\n" +
                "    public static void main(String[] args) {\n" +
                "        System.out.println(9);\n" +
                "    }\n" +
                "}";
        CodeContext codeContext = new CodeContext(4L, code, "java", 2000L, 256 * 1024L,
                List.of(new TestCase(1L, "", "3")));
        CodeResponse codeResponse = dockerCodeSandBox.process(codeContext);
        assertEquals(Submission.STATUS_WA, codeResponse.status());
    }

    @Test
    void testTrailingWhitespaceIgnored() {
        String code = "public class Main {\n" +
                "    public static void main(String[] args) {\n" +
                "        System.out.println(\"3  \\t\");\n" +
                "    }\n" +
                "}";
        CodeContext codeContext = new CodeContext(5L, code, "java", 2000L, 256 * 1024L,
                List.of(new TestCase(1L, "", "3")));
        CodeResponse codeResponse = dockerCodeSandBox.process(codeContext);
        assertEquals(Submission.STATUS_AC, codeResponse.status());
    }

    @Test
    void testMultiByteUtf8Output() {
        String code = "public class Main {\n" +
                "    public static void main(String[] args) {\n" +
                "        System.out.println(\"你好，世界！\");\n" +
                "    }\n" +
                "}";
        CodeContext codeContext = new CodeContext(7L, code, "java", 2000L, 256 * 1024L,
                List.of(new TestCase(1L, "", "你好，世界！")));
        CodeResponse codeResponse = dockerCodeSandBox.process(codeContext);
        assertEquals(Submission.STATUS_AC, codeResponse.status());
    }

    @Test
    void testInfiniteLoopTle() {
        String code = "public class Main {\n" +
                "    public static void main(String[] args) {\n" +
                "        while (true) {}\n" +
                "    }\n" +
                "}";
        CodeContext codeContext = new CodeContext(6L, code, "java", 1000L, 256 * 1024L,
                List.of(new TestCase(1L, "", "")));
        long start = System.currentTimeMillis();
        CodeResponse codeResponse = dockerCodeSandBox.process(codeContext);
        long elapsed = System.currentTimeMillis() - start;
        assertEquals(Submission.STATUS_TLE, codeResponse.status());
        assertEquals(1, codeResponse.testCaseResponses().size());
        // 超时应及时生效，允许容器创建/清理的开销
        assertEquals(true, elapsed < 15_000, "TLE 超时未生效，实际耗时：" + elapsed + "ms");
    }
}