using Admin.NET.Plugin.AiDOP.Entity;
using Admin.NET.Plugin.ApprovalFlow;

namespace Admin.NET.Plugin.AiDOP.Infrastructure;

/// <summary>
/// 智慧诊断改善计划正式审批规则：按问题严重度/跨部门选择节点，审批人只认角色编码。
/// </summary>
public static class SmartOpsImprovementApprovalRules
{
    public const string DeptHeadRole = "SMART_OPS_DEPT_HEAD";
    public const string ModuleOwnerRole = "SMART_OPS_MODULE_OWNER";
    public const string OpsOwnerRole = "SMART_OPS_OPS_OWNER";

    public const string RouteYellow = "yellow";
    public const string RouteRed = "red";
    public const string RouteGlobal = "global";

    public static readonly (string Code, string Name, int OrderNo)[] BaselineRoles =
    {
        (DeptHeadRole, "责任部门负责人", 910),
        (ModuleOwnerRole, "模块负责人", 911),
        (OpsOwnerRole, "运营负责人", 912),
    };

    public static string RoleName(string code) =>
        BaselineRoles.FirstOrDefault(x => x.Code == code).Name ?? code;

    public static string NormalizeSeverity(string? raw)
    {
        var value = (raw ?? "").Trim().ToLowerInvariant();
        return value == "red" ? "red" : "yellow";
    }

    public static bool IsCrossDept(string? moduleCode, bool isCrossDept, string? problemDept)
    {
        if (isCrossDept) return true;
        if (string.Equals(moduleCode?.Trim(), "S9", StringComparison.OrdinalIgnoreCase)) return true;
        var dept = problemDept ?? "";
        return dept.Contains("跨部门", StringComparison.Ordinal) || dept.Contains("跨部门", StringComparison.OrdinalIgnoreCase);
    }

    public static string ResolveRoute(string? moduleCode, string? severity, bool isCrossDept, string? problemDept = null)
    {
        if (IsCrossDept(moduleCode, isCrossDept, problemDept)) return RouteGlobal;
        return NormalizeSeverity(severity) == "red" ? RouteRed : RouteYellow;
    }

    public static string ResolveRoute(AdoSmartOpsImprovementPlan plan) =>
        ResolveRoute(plan.ModuleCode, plan.ProblemSeverity, plan.IsCrossDept, plan.ProblemDept);

    public static IReadOnlyList<string> RequiredRoleCodes(string route) =>
        route switch
        {
            RouteYellow => new[] { DeptHeadRole },
            RouteRed => new[] { DeptHeadRole, OpsOwnerRole },
            _ => new[] { DeptHeadRole, ModuleOwnerRole, OpsOwnerRole },
        };

    public static string MapCompletedStatus(FlowInstanceStatusEnum finalStatus) =>
        finalStatus == FlowInstanceStatusEnum.Approved ? "approved" : "draft";

    public static bool IsLegacyInitiatorFallback(string? flowJson) =>
        !string.IsNullOrWhiteSpace(flowJson)
        && flowJson.Contains("Initiator", StringComparison.Ordinal)
        && !flowJson.Contains(DeptHeadRole, StringComparison.Ordinal);
}