using Admin.NET.Core.Service;
using Microsoft.Extensions.Logging;

namespace Admin.NET.Plugin.AiDOP.Service.S8;

/// <summary>
/// S8 本地 Role → UserIds 解析器。
/// 不改 Admin.NET.Core；不新增 SysUserRoleService.GetUserIdListByRoleCode。
/// 在 S8 侧自行完成 RoleCode → SysRole.Id → UserIds 的解析。
///
/// 兼容策略（与 ado_s8_notification_layer.target_role_ids 现状一致：表当前 0 行，
/// SeedData 同时存在 RoleCode 命名（ROLE_ORDER_PLANNER）和 SysRole.Code 实存值（S8_01））：
/// - 纯数字 token → 视为 SysRole.Id
/// - 非数字 token → 视为 SysRole.Code
/// - 找不到的 token：仅 LogWarning，不抛异常。
/// </summary>
public class S8RoleResolver : ITransient
{
	private readonly SqlSugarRepository<SysRole> _sysRoleRep;
	private readonly SysUserRoleService _sysUserRoleService;
	private readonly ILogger<S8RoleResolver> _logger;

	public S8RoleResolver(
		SqlSugarRepository<SysRole> sysRoleRep,
		SysUserRoleService sysUserRoleService,
		ILogger<S8RoleResolver> logger)
	{
		_sysRoleRep = sysRoleRep;
		_sysUserRoleService = sysUserRoleService;
		_logger = logger;
	}

	/// <summary>
	/// 解析 RoleCode / RoleId 混合 token 列表为去重 UserId 列表。
	/// </summary>
	public async Task<List<long>> ResolveUserIdsAsync(IEnumerable<string>? roleTokens)
	{
		var result = new HashSet<long>();
		if (roleTokens == null) return result.ToList();

		var roleIds = new HashSet<long>();
		var codes = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
		foreach (var raw in roleTokens)
		{
			if (string.IsNullOrWhiteSpace(raw)) continue;
			var t = raw.Trim();
			if (long.TryParse(t, out var rid) && rid > 0) roleIds.Add(rid);
			else codes.Add(t);
		}

		if (codes.Count > 0)
		{
			try
			{
				var codeList = codes.ToList();
				var found = await _sysRoleRep.AsQueryable()
					.Where(r => codeList.Contains(r.Code))
					.Select(r => new { r.Id, r.Code })
					.ToListAsync();
				var foundCodes = new HashSet<string>(found.Select(f => f.Code ?? string.Empty), StringComparer.OrdinalIgnoreCase);
				foreach (var c in codes)
				{
					if (!foundCodes.Contains(c))
						_logger.LogWarning("S8RoleResolver: RoleCode '{Code}' not found in SysRole", c);
				}
				foreach (var f in found) roleIds.Add(f.Id);
			}
			catch (Exception ex)
			{
				_logger.LogWarning(ex, "S8RoleResolver: resolve RoleCode batch failed");
			}
		}

		foreach (var rid in roleIds)
		{
			try
			{
				var ids = await _sysUserRoleService.GetUserIdList(rid);
				foreach (var uid in ids)
					if (uid > 0) result.Add(uid);
			}
			catch (Exception ex)
			{
				_logger.LogWarning(ex, "S8RoleResolver: GetUserIdList(roleId={RoleId}) failed", rid);
			}
		}

		return result.ToList();
	}

	/// <summary>
	/// 将 ado_s8_notification_layer.target_role_ids 这类 CSV 字段拆为 token 列表。
	/// 兼容 ',' 和 ';' 分隔，trim + 去空。
	/// </summary>
	public static List<string> SplitTokens(string? csv)
	{
		if (string.IsNullOrWhiteSpace(csv)) return new List<string>();
		return csv.Split(new[] { ',', ';' }, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries).ToList();
	}
}