package com.arms.api.util;

import lombok.NoArgsConstructor;
import org.yaml.snakeyaml.Yaml;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.Base64;
import java.util.List;
import java.util.Map;

@NoArgsConstructor
public class YamlFileUtils {

    @SuppressWarnings("java:S2647")
    public static List<String> getYamlFilesFromDirectory(
            String directoryUrl, String branch, String username, String password) throws Exception {
        List<String> yamlFiles = new ArrayList<>();

        // 디렉토리 조회 API 호출
        HttpURLConnection connection = (HttpURLConnection) new URL(directoryUrl + "?ref=" + branch).openConnection();
        String auth = username + ":" + password;
        String encodedAuth = Base64.getEncoder().encodeToString(auth.getBytes());
        connection.setRequestProperty("Authorization", "Basic " + encodedAuth);

        if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
            throw new RuntimeException("Failed to fetch directory: " + connection.getResponseMessage());
        }

        // 응답 파싱
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
            Yaml yaml = new Yaml();
            List<Map<String, Object>> files = yaml.load(reader);

            for (Map<String, Object> fileInfo : files) {
                String type = (String) fileInfo.get("type");
                String downloadUrl = (String) fileInfo.get("download_url");

                // YAML 파일만 선택
                if ("file".equals(type) && (downloadUrl.endsWith(".yml") || downloadUrl.endsWith(".yaml"))) {
                    yamlFiles.add(downloadUrl);
                }
            }
        }
        return yamlFiles;
    }

    public static String extractFileNameWithoutExtension(String fileUrl) {
        String fullFileName = fileUrl.substring(fileUrl.lastIndexOf('/') + 1);
        return fullFileName.substring(0, fullFileName.lastIndexOf('.'));
    }
}