package com.svnlog.web.service;

import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Arrays;
import java.util.Collections;

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

public class AiInputValidatorTest {

    @Test
    public void shouldRejectEmptyListWhenValidatingInputFiles() {
        AiInputValidator validator = new AiInputValidator();
        Assertions.assertThrows(IllegalArgumentException.class, () -> validator.validate(Collections.<Path>emptyList()));
    }

    @Test
    public void shouldRejectNonMarkdownFileWhenValidatingInputFiles() throws Exception {
        AiInputValidator validator = new AiInputValidator();
        Path temp = Files.createTempFile("ai-input", ".txt");
        Files.write(temp, "abc".getBytes(StandardCharsets.UTF_8));
        Assertions.assertThrows(IllegalArgumentException.class, () -> validator.validate(Arrays.asList(temp)));
    }

    @Test
    public void shouldAcceptSmallMarkdownFilesWhenValidatingInputFiles() throws Exception {
        AiInputValidator validator = new AiInputValidator();
        Path temp = Files.createTempFile("ai-input", ".md");
        Files.write(temp, "# title".getBytes(StandardCharsets.UTF_8));
        validator.validate(Arrays.asList(temp));
        Assertions.assertTrue(true);
    }
}