using System.Globalization;
using System.Text.Json;
using System.Text.Json.Serialization;
using FreeSql;
using F9WebAiTest.Domain.Entities.SYS.YuanliaoZhuangkous;
using F9WebAiTest.Domain.Enums.SYS.YuanliaoZhuangkous;

namespace F9WebAiTest.Infrastructure.Data;

/// <summary>
/// 原料庄口数据导入：来源于 F9 系统 biz_base_yuanliaozhuangkou 表导出数据。
/// 幂等：按原始 Id 判重，已存在则跳过。
/// </summary>
public static class YuanliaoZhuangkouSeedData
{
    private const string Resource = "F9WebAiTest.Infrastructure.Data.SeedData.biz_base_yuanliaozhuangkou.json";

    private static readonly JsonSerializerOptions JsonOptions = new() { PropertyNameCaseInsensitive = true };

    public static void Seed(IFreeSql fsql)
    {
        try
        {
            var items = Load();
            if (items.Count == 0) return;

            var existIds = fsql.Select<YuanliaoZhuangkou>()
                .DisableGlobalFilter("软删除")
                .ToList()
                .Select(x => x.Id)
                .ToHashSet();

            var inserts = new List<YuanliaoZhuangkou>();
            foreach (var item in items)
            {
                if (item.Id <= 0 || existIds.Contains(item.Id)) continue;
                if (string.IsNullOrWhiteSpace(item.Name)) continue;

                inserts.Add(new YuanliaoZhuangkou(item.Id, item.Year, item.Name.Trim(), item.Code ?? string.Empty,
                    item.Jibie ?? string.Empty, (BendiWaidi_Enum)item.Bendiwaidi, item.Chandi ?? string.Empty,
                    item.Canpinzhong ?? string.Empty, item.Wzmlid, item.Zhandian ?? string.Empty, item.Pici)
                {
                    CreatedAt = ParseLegacyDate(item.CreatedAt) ?? DateTime.Now,
                    CreatedBy = item.CreatedBy ?? string.Empty,
                    UpdatedAt = ParseLegacyDate(item.UpdatedAt),
                    UpdateBy = item.UpdateBy ?? string.Empty
                });
            }

            if (inserts.Count > 0) fsql.Insert(inserts).ExecuteAffrows();
            Console.WriteLine($"[YuanliaoZhuangkouSeed] 原料庄口：来源 {items.Count} 条，新增 {inserts.Count} 条，跳过已存在 {items.Count - inserts.Count} 条");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"[YuanliaoZhuangkouSeed] 原料庄口数据导入跳过：{ex.Message}");
        }
    }

    private static List<YuanliaoZhuangkouSeedItem> Load()
    {
        var assembly = typeof(YuanliaoZhuangkouSeedData).Assembly;
        using var stream = assembly.GetManifestResourceStream(Resource);
        if (stream == null)
        {
            Console.WriteLine($"[YuanliaoZhuangkouSeed] 未找到内嵌资源：{Resource}");
            return new List<YuanliaoZhuangkouSeedItem>();
        }
        return JsonSerializer.Deserialize<List<YuanliaoZhuangkouSeedItem>>(stream, JsonOptions) ?? new List<YuanliaoZhuangkouSeedItem>();
    }

    /// <summary>解析 F9 导出的日期（形如 d/M/yyyy H:mm:ss.fff），1970 占位值视为未更新返回 null</summary>
    private static readonly string[] LegacyDateFormats =
    {
        "d/M/yyyy H:mm:ss.fff", "d/M/yyyy H:mm:ss", "d/M/yyyy H:mm",
        "M/d/yyyy H:mm:ss.fff", "M/d/yyyy H:mm:ss", "M/d/yyyy H:mm",
        "yyyy-MM-dd HH:mm:ss.fff", "yyyy-MM-dd HH:mm:ss"
    };

    private static DateTime? ParseLegacyDate(string value)
    {
        if (string.IsNullOrWhiteSpace(value)) return null;

        if (DateTime.TryParseExact(value, LegacyDateFormats, CultureInfo.InvariantCulture, DateTimeStyles.None, out var exact))
            return exact.Year <= 1900 ? null : exact;

        if (DateTime.TryParse(value, CultureInfo.InvariantCulture, DateTimeStyles.None, out var any))
            return any.Year <= 1900 ? null : any;

        return null;
    }

    private sealed class YuanliaoZhuangkouSeedItem
    {
        [JsonPropertyName("id")] public long Id { get; set; }
        [JsonPropertyName("created_by")] public string CreatedBy { get; set; }
        [JsonPropertyName("created_at")] public string CreatedAt { get; set; }
        [JsonPropertyName("update_by")] public string UpdateBy { get; set; }
        [JsonPropertyName("updated_at")] public string UpdatedAt { get; set; }
        [JsonPropertyName("year")] public int Year { get; set; }
        [JsonPropertyName("name")] public string Name { get; set; }
        [JsonPropertyName("code")] public string Code { get; set; }
        [JsonPropertyName("jibie")] public string Jibie { get; set; }
        [JsonPropertyName("bendiwaidi")] public int Bendiwaidi { get; set; }
        [JsonPropertyName("chandi")] public string Chandi { get; set; }
        [JsonPropertyName("canpinzhong")] public string Canpinzhong { get; set; }
        [JsonPropertyName("wzmlid")] public long Wzmlid { get; set; }
        [JsonPropertyName("zhandian")] public string Zhandian { get; set; }
        [JsonPropertyName("pici")] public int Pici { get; set; }
    }
}