using Admin.NET.Plugin.AiDOP.Const.S8;
using Admin.NET.Plugin.AiDOP.Controllers.S8;
using Admin.NET.Plugin.AiDOP.Infrastructure.S8;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Filters;
using Microsoft.AspNetCore.Mvc.Routing;
using System.Reflection;
using Xunit;

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

/// <summary>
/// S8-P0-4-API-AUTHORIZATION-1：S8 接口鉴权守卫。
///
/// <para>修复前实测（业务账号 <c>UATExceptionA</c>，2026-09-02）：
/// <c>PUT /config/watch-rules/{id}/params</c> 与 <c>POST /config/operator-bindings</c>
/// 都直达业务校验返回 <b>400</b> 而非 403 —— 鉴权层根本没拦。
/// 根因是平台 <c>JwtHandler</c> 用「路由路径逐字转权限名」匹配，
/// 而 S8 是带路径参数的 RESTful 路由（<c>…/exceptions/{id}/claim</c> → <c>…:1329909430019:claim</c>），
/// 静态权限码永远不可能相等；又因末行「未登记路由默认放行」，全部 S8 接口变成登录即可调用。</para>
///
/// <para>本测试全部走**反射元数据**（不是字符串 grep），逐个枚举 S8 Controller 的 Action，
/// 保证：① 每个 Action 都声明了能力码；② 能力码在正式目录内；
/// ③ 写动作不得落到只读能力上；④ 各类动作落到正确的能力分组；
/// ⑤ 不回退到已死的 <c>ado_s8_role_permission_config.permission_codes</c>。</para>
/// </summary>
public class S8AuthorizationGuardTests
{
    private static readonly Assembly PluginAssembly = typeof(AdoS8ExceptionsController).Assembly;

    /// <summary>S8 命名空间下的全部 Controller。</summary>
    public static IEnumerable<Type> S8Controllers => PluginAssembly
        .GetTypes()
        .Where(t => t.Namespace == typeof(AdoS8ExceptionsController).Namespace
                 && typeof(ControllerBase).IsAssignableFrom(t)
                 && !t.IsAbstract)
        .OrderBy(t => t.Name);

    public static TheoryData<Type> ControllerData()
    {
        var data = new TheoryData<Type>();
        foreach (var t in S8Controllers) data.Add(t);
        return data;
    }

    /// <summary>
    /// S8-ACTION-PERMISSION-1：一个 Action 现在可能挂两种门禁之一 ——
    /// 配置面仍用能力码 <see cref="S8PermissionAttribute"/>，
    /// 异常单动作改用 <see cref="S8ExceptionActionAttribute"/>（租户内 Action↔Role 判定）。
    /// 两者<b>互斥</b>：同一个 Action 不允许同时挂，否则同一问题两个 authority。
    /// </summary>
    private sealed record ActionInfo(
        Type Controller, MethodInfo Method, string Verb, string Template,
        string? Permission, string? ExceptionAction)
    {
        /// <summary>是否已被任一门禁保护。未保护 = 退回平台「未登记路由默认放行」。</summary>
        public bool Guarded => !string.IsNullOrWhiteSpace(Permission) || !string.IsNullOrWhiteSpace(ExceptionAction);
    }

    private static IEnumerable<ActionInfo> AllActions()
    {
        foreach (var c in S8Controllers)
        {
            foreach (var m in c.GetMethods(BindingFlags.Instance | BindingFlags.Public | BindingFlags.DeclaredOnly))
            {
                var http = m.GetCustomAttributes().OfType<IActionHttpMethodProvider>().FirstOrDefault();
                if (http == null) continue;

                var verb = http.HttpMethods.FirstOrDefault() ?? "GET";
                var template = (http as IRouteTemplateProvider)?.Template ?? string.Empty;
                var perm = m.GetCustomAttribute<S8PermissionAttribute>()?.Code;
                var act = m.GetCustomAttribute<S8ExceptionActionAttribute>()?.Code;
                yield return new ActionInfo(c, m, verb.ToUpperInvariant(), template, perm, act);
            }
        }
    }

    private static bool IsReadCapability(string code) =>
        code is S8PermissionCatalog.ExceptionRead
             or S8PermissionCatalog.ConfigRead
             or S8PermissionCatalog.DashboardRead;

    // ───────────────────────── ① 全量覆盖 ─────────────────────────

    /// <summary>S8 Controller 必须被枚举到（防止命名空间搬家后本测试静默空跑）。</summary>
    [Fact]
    public void AllS8ControllersAreDiscovered()
    {
        var controllers = S8Controllers.ToList();
        // 下限随功能删除同步下调：S8-STANDARD-DATASET-HARD-CUTOVER-1 物理删除了
        // AdoS8ConfigDataSourcesController 与 AdoS8ConfigAlertRulesController（25 → 23）。
        // 这条断言防的是「反射枚举失效导致后面所有授权检查空跑」，不是控制器数量本身，
        // 故取当前实际数量作下限即可。
        Assert.True(controllers.Count >= 23, $"仅发现 {controllers.Count} 个 S8 Controller，疑似枚举失效");
        Assert.Contains(controllers, t => t == typeof(AdoS8ExceptionsController));
        Assert.Contains(controllers, t => t == typeof(AdoS8WatchDebugController));
    }

    /// <summary>每一个 Action 都必须有确定的授权要求，一个都不许漏。</summary>
    [Fact]
    public void EveryS8Action_DeclaresAPermission()
    {
        var missing = AllActions()
            .Where(a => !a.Guarded)
            .Select(a => $"{a.Controller.Name}.{a.Method.Name} [{a.Verb} {a.Template}]")
            .ToList();

        Assert.True(missing.Count == 0,
            "以下 S8 Action 未声明 [S8Permission] 或 [S8ExceptionAction]，将退回平台『未登记路由默认放行』：\n"
            + string.Join('\n', missing));

        // S8-ACTION-PERMISSION-1：两种门禁互斥。同时挂 = 同一问题两个 authority，判据迟早分叉。
        var doubled = AllActions()
            .Where(a => !string.IsNullOrWhiteSpace(a.Permission) && !string.IsNullOrWhiteSpace(a.ExceptionAction))
            .Select(a => $"{a.Controller.Name}.{a.Method.Name}")
            .ToList();
        Assert.True(doubled.Count == 0, "以下 Action 同时挂了两种门禁：\n" + string.Join('\n', doubled));
    }

    /// <summary>声明的权限码必须在正式目录内，杜绝写错字符串导致永远匹配不到。</summary>
    [Fact]
    public void EveryDeclaredPermission_ExistsInCatalog()
    {
        var known = S8PermissionCatalog.All.Select(x => x.Code).ToHashSet(StringComparer.Ordinal);
        var unknown = AllActions()
            .Where(a => a.Permission != null && !known.Contains(a.Permission))
            .Select(a => $"{a.Controller.Name}.{a.Method.Name} → {a.Permission}")
            .Distinct().ToList();

        Assert.True(unknown.Count == 0, "以下权限码不在 S8PermissionCatalog 内：\n" + string.Join('\n', unknown));

        var unknownActions = AllActions()
            .Where(a => a.ExceptionAction != null && !S8ExceptionActionCatalog.IsKnown(a.ExceptionAction))
            .Select(a => $"{a.Controller.Name}.{a.Method.Name} → {a.ExceptionAction}")
            .Distinct().ToList();
        Assert.True(unknownActions.Count == 0,
            "以下动作码不在 S8ExceptionActionCatalog 内：\n" + string.Join('\n', unknownActions));
    }

    // ───────────────────────── ② 写动作不得落到只读能力 ─────────────────────────

    /// <summary>
    /// 所有 mutation（非 GET）Action 都不得使用只读能力码，
    /// 否则「有查看权限的人」就能改配置 / 改业务状态。
    /// </summary>
    [Fact]
    public void MutationActions_DoNotUseReadOnlyCapabilities()
    {
        var offenders = AllActions()
            .Where(a => a.Verb != "GET"
                        && ((a.Permission != null && IsReadCapability(a.Permission))
                            // 新门禁同理：写动作不得落在"查看异常"上，
                            // 否则有查看权限的人就能改业务状态。
                            || a.ExceptionAction == S8ExceptionActionCode.View
                            || a.ExceptionAction == S8ExceptionActionCode.ViewAll))
            .Select(a => $"{a.Controller.Name}.{a.Method.Name} [{a.Verb}] → {a.Permission ?? a.ExceptionAction}")
            .ToList();

        Assert.True(offenders.Count == 0, "以下写动作落在只读能力上：\n" + string.Join('\n', offenders));
    }

    // ───────────────────────── ③ 分组正确性 ─────────────────────────

    /// <summary>配置类 Controller 的写动作必须落在 config 组，不得使用 operator / verification 能力。</summary>
    [Theory]
    [InlineData(typeof(AdoS8ConfigWatchRulesController), S8PermissionCatalog.ConfigWatchRule)]
    // S8-STANDARD-DATASET-HARD-CUTOVER-1：AdoS8ConfigDataSourcesController 已物理删除。
    [InlineData(typeof(AdoS8ConfigExceptionTypesController), S8PermissionCatalog.ConfigExceptionType)]
    [InlineData(typeof(AdoS8ConfigNotificationLayersController), S8PermissionCatalog.ConfigNotification)]
    [InlineData(typeof(AdoS8ConfigScenesController), S8PermissionCatalog.ConfigScene)]
    [InlineData(typeof(AdoS8ConfigKpiTargetsController), S8PermissionCatalog.ConfigKpi)]
    [InlineData(typeof(AdoS8ConfigDashboardCellsController), S8PermissionCatalog.ConfigDashboard)]
    [InlineData(typeof(AdoS8ConfigBindingsController), S8PermissionCatalog.ConfigOperatorBind)]
    [InlineData(typeof(AdoS8ConfigRolesController), S8PermissionCatalog.ConfigRoleWrite)]
    public void ConfigController_MutationsUseItsOwnConfigCapability(Type controller, string expected)
    {
        var mutations = AllActions().Where(a => a.Controller == controller && a.Verb != "GET").ToList();
        Assert.NotEmpty(mutations);
        Assert.All(mutations, a => Assert.Equal(expected, a.Permission));
    }

    /// <summary>配置类 Controller 一律不得出现 operator / verification 能力码。</summary>
    [Fact]
    public void ConfigControllers_NeverUseOperatorOrQualityCapabilities()
    {
        var operatorOrQuality = new[]
        {
            S8PermissionCatalog.ExceptionClaim, S8PermissionCatalog.ExceptionStart,
            S8PermissionCatalog.ExceptionAssign, S8PermissionCatalog.ExceptionUpgrade,
            S8PermissionCatalog.ExceptionReject, S8PermissionCatalog.ExceptionClose,
            S8PermissionCatalog.VerificationSubmit, S8PermissionCatalog.VerificationApprove,
            S8PermissionCatalog.VerificationReject,
        }.ToHashSet(StringComparer.Ordinal);

        var offenders = AllActions()
            .Where(a => a.Controller.Name.Contains("Config", StringComparison.Ordinal)
                     && a.Permission != null && operatorOrQuality.Contains(a.Permission))
            .Select(a => $"{a.Controller.Name}.{a.Method.Name} → {a.Permission}")
            .ToList();

        Assert.True(offenders.Count == 0, string.Join('\n', offenders));
    }

    /// <summary>复检通过 / 退回必须是 quality 能力；提交复检、认领、开始处理必须是 operator 能力。</summary>
    [Theory]
    // S8-ACTION-PERMISSION-1：映射对象由能力码改为**动作码**。
    // 旧能力码在本批之后只剩一个用途：首次 Provisioning 从「本租户原本谁能做」推导默认授权；
    // 运行期判定改由 S8ExceptionActionAttribute + 租户内 Action↔Role 回答，
    // 原因是旧链路不校验角色的租户（实测 UATAdminA 经别家租户角色拿到 assign）。
    // 守卫对象随之改变，守的仍是同一件事：这个路由挂对了门禁。
    [InlineData("approve-verification", S8ExceptionActionCode.Verify)]
    [InlineData("reject-verification", S8ExceptionActionCode.Verify)]
    [InlineData("submit-verification", S8ExceptionActionCode.SubmitVerify)]
    [InlineData("claim", S8ExceptionActionCode.Claim)]
    [InlineData("start-progress", S8ExceptionActionCode.Start)]
    [InlineData("transfer", S8ExceptionActionCode.Transfer)]
    [InlineData("upgrade", S8ExceptionActionCode.Upgrade)]
    [InlineData("comment", S8ExceptionActionCode.Comment)]
    public void ExceptionAction_MapsToExpectedActionCode(string routeFragment, string expected)
    {
        var action = AllActions().SingleOrDefault(a =>
            a.Controller == typeof(AdoS8ExceptionsController)
            && a.Verb != "GET"
            && a.Template.EndsWith(routeFragment, StringComparison.Ordinal));

        Assert.NotNull(action);
        Assert.Equal(expected, action!.ExceptionAction);
    }

    /// <summary>「检验通过 / 退回」绝不能与「提交复检」共用能力码，否则处理人可自检自过。</summary>
    [Fact]
    public void QualityApproval_IsSeparatedFromOperatorSubmission()
    {
        Assert.NotEqual(S8PermissionCatalog.VerificationSubmit, S8PermissionCatalog.VerificationApprove);
        Assert.NotEqual(S8PermissionCatalog.VerificationSubmit, S8PermissionCatalog.VerificationReject);
    }

    // ───────────────────────── ④ 调试接口 ─────────────────────────

    /// <summary>
    /// 调试 / 运维接口必须要求独立的 debug 能力，且不得复用任何业务能力码。
    /// 该接口历史上是「任意登录用户可调用」，且能对**任意 tenantId/factoryId** 触发自动建单主链。
    /// </summary>
    [Fact]
    public void DebugEndpoints_RequireDedicatedDebugCapability()
    {
        var actions = AllActions().Where(a => a.Controller == typeof(AdoS8WatchDebugController)).ToList();
        Assert.NotEmpty(actions);
        Assert.All(actions, a => Assert.Equal(S8PermissionCatalog.DebugRun, a.Permission));

        // debug 能力码不得被任何业务接口复用。
        var leaked = AllActions()
            .Where(a => a.Permission == S8PermissionCatalog.DebugRun
                     && a.Controller != typeof(AdoS8WatchDebugController))
            .Select(a => a.Controller.Name + "." + a.Method.Name)
            .ToList();
        Assert.True(leaked.Count == 0, string.Join('\n', leaked));
    }

    // ───────────────────────── ⑤ 不回退到死表 ─────────────────────────

    /// <summary>
    /// 授权判定必须走平台 SysMenu 按钮权限（<c>SysMenuService.GetOwnBtnPermList</c>），
    /// 不得把已确认 0 消费方的 <c>ado_s8_role_permission_config.permission_codes</c> 接回运行链。
    /// </summary>
    [Fact]
    public void AuthorizationDoesNotRevivePermissionCodesTable()
    {
        var root = Path.GetFullPath(Path.Combine(AppContext.BaseDirectory, "../../../../Admin.NET.Plugin.AiDOP"));
        var src = File.ReadAllText(Path.Combine(root, "Infrastructure/S8/S8PermissionAttribute.cs"));

        Assert.Contains("GetOwnBtnPermList", src);

        // S8-ACTION-PERMISSION-1：新授权链路一并纳入本守卫。新表 ado_s8_exception_action_role
        // 取代了那张 0 消费方的死表，绝不能有人顺手把 permission_codes 接回运行链。
        foreach (var f in new[]
                 {
                     "Infrastructure/S8/S8PermissionAttribute.cs",
                     "Infrastructure/S8/S8ExceptionActionAuthorizer.cs",
                     "Infrastructure/S8/S8ExceptionActionAttribute.cs",
                     "Infrastructure/S8/S8TenantRoleResolver.cs",
                 })
        {
            var one = File.ReadAllText(Path.Combine(root, f));
            // 判据必须精确到「那张死表的实体 / 属性 / 列」。
            // 裸子串 "PermissionCodes" 会误伤合法方法名（如按租户解析能力码的
            // GetPermissionCodesAsync），把一条真守卫变成噪音，最后被人整条删掉。
            Assert.DoesNotContain("AdoS8RolePermissionConfig", one);
            Assert.DoesNotContain(".PermissionCodes", one);
            Assert.DoesNotContain("permission_codes", one);
        }
    }

    /// <summary>权限门必须 fail-closed：拿不到权限服务 / 抛异常时一律 403，绝不放行。</summary>
    [Fact]
    public void PermissionGate_IsFailClosed()
    {
        var root = Path.GetFullPath(Path.Combine(AppContext.BaseDirectory, "../../../../Admin.NET.Plugin.AiDOP"));
        var src = File.ReadAllText(Path.Combine(root, "Infrastructure/S8/S8PermissionAttribute.cs"));

        Assert.Contains("Status403Forbidden", src);
        Assert.Contains("catch", src);
        // 空码构造必须抛，防止 [S8Permission("")] 变成静默放行。
        Assert.Throws<ArgumentException>(() => new S8PermissionAttribute(""));

        // S8-ACTION-PERMISSION-1：新门禁同一条要求，且未知动作码同样在构造期就炸。
        var actionSrc = File.ReadAllText(Path.Combine(root, "Infrastructure/S8/S8ExceptionActionAttribute.cs"));
        Assert.Contains("Status403Forbidden", actionSrc);
        Assert.Contains("catch", actionSrc);
        Assert.Throws<ArgumentException>(() => new S8ExceptionActionAttribute(""));
        Assert.Throws<ArgumentException>(() => new S8ExceptionActionAttribute("EXCEPTION_NOT_REAL"));
    }

    /// <summary>
    /// 目录内每个**未废弃**能力码都应至少被一个 Action 使用，避免目录与实现漂移出孤儿码。
    /// （<c>s8:exception:close</c> 已标 deprecated：S8 无独立关闭接口，关闭由 approve-verification
    /// 经状态机达成；既有 SysMenu 行与授权保持不动，故不从目录删除。）
    /// </summary>
    [Fact]
    public void CatalogHasNoOrphanCapability()
    {
        var used = AllActions().Where(a => a.Permission != null).Select(a => a.Permission!).ToHashSet(StringComparer.Ordinal);

        // S8-ACTION-PERMISSION-1：归属现在有两种 —— ① 仍被某个 Action 直接使用（配置面）；
        // ② 被 S8ExceptionActionCatalog 引为某动作的 LegacyPermissionCode。后者不是孤儿，
        // 而是首次 Provisioning 推导默认授权的输入；删掉它会让「本租户原本谁能做这件事」失传。
        var legacyMapped = S8ExceptionActionCatalog.All
            .SelectMany(d => new[] { d.LegacyPermissionCode }.Concat(d.LegacyPermissionAliases))
            .Where(c => !string.IsNullOrWhiteSpace(c))
            .Select(c => c!)
            .ToHashSet(StringComparer.Ordinal);

        var orphans = S8PermissionCatalog.All
            .Where(x => !x.Deprecated)
            .Select(x => x.Code)
            .Where(c => !used.Contains(c) && !legacyMapped.Contains(c))
            .ToList();
        Assert.True(orphans.Count == 0,
            "以下能力码既无 Action 使用、也未被动作目录引为 Legacy 推导输入：\n" + string.Join('\n', orphans));
    }

    /// <summary>已废弃能力码不得被任何 Action 引用（否则等于用一个没人维护的码当门禁）。</summary>
    [Fact]
    public void DeprecatedCapabilitiesAreNotReferencedByAnyAction()
    {
        var deprecated = S8PermissionCatalog.All.Where(x => x.Deprecated).Select(x => x.Code)
            .ToHashSet(StringComparer.Ordinal);
        Assert.NotEmpty(deprecated); // 防止标记体系被误删后本测试空跑

        var offenders = AllActions()
            .Where(a => a.Permission != null && deprecated.Contains(a.Permission))
            .Select(a => $"{a.Controller.Name}.{a.Method.Name} → {a.Permission}")
            .ToList();
        Assert.True(offenders.Count == 0, string.Join('\n', offenders));
    }
}