using Duende.IdentityServer;
using Duende.IdentityServer.Models;
using Duende.IdentityServer.Services;
using Easy;
using Easy.DDD.Application;
using Easy.DDD.Domain;
using Easy.DDD.Domain.Repositories;
using Easy.Result;
using IdentityServer.DDD.Contracts.Inputs;
using IdentityServer.DDD.Contracts.Models;
using IdentityServer.DDD.Shared.IServices;
using Microsoft.AspNetCore.Authentication;

namespace IdentityServer.DDD.Application;

public class SpaAppService : ApiService
{
    private IIdentityUserManager IdentityUserDomainService { get; }
    //private IRepository<IdentityUser> IdentityUserRepository { get; }
    private IHttpContextAccessor Accessor { get; }
    private HttpContext HttpContext { get; }
    private IIdentityServerInteractionService Interaction { get; }
    private IServerUrls ServerUrls { get; }

    public SpaAppService(IIdentityUserManager identityUserDomainService,
        IHttpContextAccessor httpContextAccessor,
        IIdentityServerInteractionService interaction,
        IServerUrls serverUrls)
    {
        IdentityUserDomainService = identityUserDomainService;
        //IdentityUserRepository = identityUserDomainService.IdentityUserRepository;
        Accessor = httpContextAccessor;
        Interaction = interaction;
        ServerUrls = serverUrls;
        HttpContext = httpContextAccessor.HttpContext;
    }


    public async Task<ApiResultValue<string>> Login(LoginInput model)
    {
        var user = await IdentityUserDomainService.PasswordSignInAsync(model.Username, model.Password);

        var principal = new IdentityServerUser(user.Id.ToString())
        {
            DisplayName = user.NickName,
        }.CreatePrincipal();

        await HttpContext.SignInAsync(principal, new AuthenticationProperties
        {
            IsPersistent = model.Remember
        });

        var url = model.ReturnUrl != null ? Uri.UnescapeDataString(model.ReturnUrl) : null;

        var authzContext = await Interaction.GetAuthorizationContextAsync(url);

        return ApiResult.ValueSuccess(authzContext != null ? url : ServerUrls.BaseUrl);
    }

    public async Task<ApiResultValue<string>> Consent(ConsentDto model)
    {
        var url = Uri.UnescapeDataString(model.ReturnUrl);

        var authzContext = await Interaction.GetAuthorizationContextAsync(url);
        When.Is(authzContext == null, "错误");

        if (model.Deny)
        {
            await Interaction.DenyAuthorizationAsync(authzContext, AuthorizationError.AccessDenied);
        }
        else
        {
            await Interaction.GrantConsentAsync(authzContext,
                new ConsentResponse
                {
                    RememberConsent = model.Remember,
                    ScopesValuesConsented = authzContext.ValidatedResources.RawScopeValues
                });
        }

        return ApiResult.ValueSuccess(url);
    }

    public async Task<ApiResultValue<ContextModel>> GetContext(string returnUrl)
    {
        var authzContext = await Interaction.GetAuthorizationContextAsync(returnUrl);
        When.Is(authzContext == null, "没有上下文");
        return ApiResult.ValueSuccess(new ContextModel
        {
            LoginHint = authzContext.LoginHint,
            IdP = authzContext.IdP,
            Tenant = authzContext.Tenant,
            Scopes = authzContext.ValidatedResources.RawScopeValues,
            Client = authzContext.Client.ClientName ?? authzContext.Client.ClientId
        });
    }

    public async Task<ApiResultValue<ErrorModel>> GetError(string errorId)
    {
        var errorInfo = await Interaction.GetErrorContextAsync(errorId);
        return ApiResult.ValueSuccess(new ErrorModel()
        {
            Error = errorInfo.Error,
            ErrorDescription = errorInfo.ErrorDescription
        });
    }

    public async Task<ApiResultValue<LogOutModel>> Logout(string logoutId)
    {
        var logoutInfo = await Interaction.GetLogoutContextAsync(logoutId);

        await Accessor.HttpContext.SignOutAsync();
        return ApiResult.ValueSuccess(new LogOutModel()
        {
            PostLogoutRedirectUri = logoutInfo.PostLogoutRedirectUri,
            SignOutIFrameUrl = logoutInfo.SignOutIFrameUrl,
            Prompt = Accessor.HttpContext.User.Identity.IsAuthenticated
        });
    }
    public async Task<ApiResultValue<LogOutModel>> GetLogout(string logoutId)
    {
        var logoutInfo = await Interaction.GetLogoutContextAsync(logoutId);
        if (logoutInfo != null)
        {
            if (!logoutInfo.ShowSignoutPrompt || !Accessor.HttpContext.User.Identity.IsAuthenticated)
            {
                await Accessor.HttpContext.SignOutAsync();

                return ApiResult.ValueSuccess(new LogOutModel()
                {
                    PostLogoutRedirectUri = logoutInfo.PostLogoutRedirectUri,
                    SignOutIFrameUrl = logoutInfo.SignOutIFrameUrl,
                    Prompt = true
                });
            }
        }
        return ApiResult.ValueRetry(new LogOutModel()
        {
            Prompt = false
        }, "未授权");
    }
}