using System.Net;
using System.Net.Http.Json;
using System.Text.Json;
using System.Text.RegularExpressions;
using EARSystem.Infrastructure;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc.Testing;
using Microsoft.Data.Sqlite;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Infrastructure;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.DependencyInjection.Extensions;

namespace EARSystem.Tests;

public class AppFactory : WebApplicationFactory<Program>
{
    private readonly SqliteConnection connection = new("Data Source=:memory:");
    public AppFactory() => connection.Open();
    protected override void ConfigureWebHost(IWebHostBuilder builder) {
        builder.UseEnvironment("Testing");
        builder.ConfigureAppConfiguration((_,config)=>config.AddInMemoryCollection(new Dictionary<string,string?>{
            ["Demo:Enabled"]="true",["Logging:LogLevel:Default"]="Warning",
            ["AMap:WebServiceKey"]="",["AMap:BrowserKey"]="",["AMap:JsSecurityCode"]=""
        }));
        builder.ConfigureServices(services=>{
            services.RemoveAll<AppDbContext>();services.RemoveAll<DbContextOptions<AppDbContext>>();
            services.RemoveAll<IDbContextOptionsConfiguration<AppDbContext>>();
            services.AddDbContext<AppDbContext>(o=>o.UseSqlite(connection));
        });
    }
    public HttpClient Browser() => CreateClient(new(){BaseAddress=new Uri("https://localhost"),AllowAutoRedirect=false,HandleCookies=true});
    protected override void Dispose(bool disposing) {base.Dispose(disposing);if(disposing)connection.Dispose();}
}

public static class BrowserHelpers
{
    public static async Task<string> Token(HttpClient client,string path="/Account/Login") {
        var response=await client.GetAsync(path);
        response.EnsureSuccessStatusCode();
        var html=await response.Content.ReadAsStringAsync();
        var match=Regex.Match(html,"name=\"__RequestVerificationToken\"[^>]*value=\"([^\"]+)\"");
        Assert.True(match.Success,"Antiforgery token missing");
        return WebUtility.HtmlDecode(match.Groups[1].Value);
    }
    public static async Task<string> Register(HttpClient client) {
        var token=await Token(client);
        var email=Guid.NewGuid().ToString("N")+"@test.local";
        var response=await client.PostAsync("/Account/Register",new FormUrlEncodedContent(new Dictionary<string,string>{
            ["__RequestVerificationToken"]=token,["DisplayName"]="测试用户",["Email"]=email,
            ["Password"]="TestPassword!42",["ConfirmPassword"]="TestPassword!42"
        }));
        Assert.Equal(HttpStatusCode.Redirect,response.StatusCode);
        return await Token(client,"/Diary");
    }
    public static async Task<HttpResponseMessage> Send(HttpClient client,string token,string url,HttpMethod method,object? body=null) {
        var request=new HttpRequestMessage(method,url);
        request.Headers.Add("X-CSRF-TOKEN",token);
        if(body!=null)request.Content=JsonContent.Create(body);
        return await client.SendAsync(request);
    }
    public static async Task<JsonElement> Json(HttpResponseMessage response) {
        var raw=await response.Content.ReadAsStringAsync();
        Assert.True(response.IsSuccessStatusCode,"HTTP "+(int)response.StatusCode+": "+raw);
        return JsonDocument.Parse(raw).RootElement.Clone();
    }
}