using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using Newtonsoft.Json;

namespace LocalizationTool.Services
{
    /// <summary>
    /// 语言包数据模型（JSON 格式）。
    /// 字段名与主程序 TeamAAS.Localization.LanguageResourcePack 的 JSON 契约完全一致，
    /// 两个程序读写同一份 .json 文件。
    /// </summary>
    public class LanguagePack
    {
        [JsonProperty("languageCode")]
        public string LanguageCode { get; set; }

        [JsonProperty("languageName")]
        public string LanguageName { get; set; }

        [JsonProperty("version")]
        public string Version { get; set; } = "1.0.0";

        [JsonProperty("author")]
        public string Author { get; set; }

        /// <summary>翻译字典：中文原文 → 译文。</summary>
        [JsonProperty("translations")]
        public Dictionary<string, string> Translations { get; set; } = new Dictionary<string, string>();
    }

    /// <summary>语言包读写（JSON，人类可读）。</summary>
    public static class LanguagePackIO
    {
        /// <summary>
        /// 保存为 .json（UTF-8 无 BOM、缩进格式化，方便外部人员直接查看编辑）。
        /// </summary>
        public static void SaveJson(LanguagePack pack, string filePath)
        {
            File.WriteAllText(filePath, JsonConvert.SerializeObject(pack, Formatting.Indented),
                new UTF8Encoding(false));
        }

        /// <summary>从 .json 加载。</summary>
        public static LanguagePack LoadJson(string filePath)
        {
            var pack = JsonConvert.DeserializeObject<LanguagePack>(File.ReadAllText(filePath, Encoding.UTF8));
            if (pack == null) throw new InvalidDataException("JSON 内容为空");
            if (string.IsNullOrWhiteSpace(pack.LanguageCode))
                pack.LanguageCode = Path.GetFileNameWithoutExtension(filePath);
            if (pack.Translations == null) pack.Translations = new Dictionary<string, string>();
            return pack;
        }
    }
}