namespace Admin.NET.Plugin.AiDOP.WorkOrder;

/// <summary>领料建单 / 工单下达面向业务用户的失败提示（不暴露内部错误码作主文案）。</summary>
public static class PickBillUserMessages
{
    public static string ForReleaseFailure(string? reasonCode, string? reason = null, string? hint = null, IEnumerable<string>? items = null)
    {
        var involved = FormatItems(items);
        var msg = (reasonCode ?? "").Trim().ToUpperInvariant() switch
        {
            "MES_UNREACHABLE" =>
                "下达失败！因无法连接 MES 端数据库，请联系系统管理员后重试。",
            "MES_WRITE_FAILED" =>
                "下达失败！MES 端写入领料单失败，请联系系统管理员。",
            "SEQ_FAILED" =>
                "下达失败！MES 端领料单号取号失败，请联系系统管理员。",
            "NO_KEEPER" =>
                "下达失败！部分物料未配置保管员或库位，请先在仓储基础数据中补齐后重试。" + involved,
            "KEEPER_RULE_UNSAFE" =>
                "下达失败！物料号或保管员职责区间含不支持的字符，请联系系统管理员处理。" + involved,
            "NO_DETAIL" =>
                "下达失败！工单无物料明细，请先同步或维护物料后重试。",
            "ITEM_INVALID" =>
                "下达失败！工单物料主数据缺失或无效，请先补齐物料主数据后重试。",
            "WO_STATE_INVALID" =>
                "下达失败！当前工单状态不允许下达，请刷新列表后重试。",
            "ORPHAN_DETECTED" =>
                "下达失败！MES 端存在异常领料单数据，请联系系统管理员处理。",
            _ => BuildFallback(reason, hint)
        };
        return msg;
    }

    /// <summary>MES 补偿按钮等非「下达」入口，措辞改为「建领料失败」。</summary>
    public static string ForPickCreateFailure(string? reasonCode, string? reason = null, string? hint = null, IEnumerable<string>? items = null)
        => ForReleaseFailure(reasonCode, reason, hint, items)
            .Replace("下达失败！", "建领料失败！", StringComparison.Ordinal);

    private static string BuildFallback(string? reason, string? hint)
    {
        if (!string.IsNullOrWhiteSpace(reason) && reason.Contains("下达失败", StringComparison.Ordinal))
            return reason.Trim();
        if (!string.IsNullOrWhiteSpace(reason) && LooksLikeConnectionIssue(reason))
            return "下达失败！因无法连接 MES 端数据库，请联系系统管理员后重试。";

        var detail = string.IsNullOrWhiteSpace(reason) ? "原因未知" : Trunc(reason.Trim(), 120);
        var action = string.IsNullOrWhiteSpace(hint) ? "请联系系统管理员。" : hint.Trim();
        return $"下达失败！{detail}。{action}";
    }

    private static bool LooksLikeConnectionIssue(string text)
    {
        return text.Contains("不可达", StringComparison.OrdinalIgnoreCase)
               || text.Contains("timeout", StringComparison.OrdinalIgnoreCase)
               || text.Contains("连接", StringComparison.Ordinal)
               || text.Contains("network", StringComparison.OrdinalIgnoreCase)
               || text.Contains("MES_UNREACHABLE", StringComparison.OrdinalIgnoreCase);
    }

    private static string FormatItems(IEnumerable<string>? items)
    {
        if (items == null) return "";
        var list = items.Where(x => !string.IsNullOrWhiteSpace(x)).Distinct(StringComparer.OrdinalIgnoreCase).Take(15).ToList();
        return list.Count == 0 ? "" : " 涉及物料：" + string.Join("、", list) + (list.Count >= 15 ? "…" : "");
    }

    private static string Trunc(string s, int max) =>
        s.Length <= max ? s : s[..max] + "…";
}