using System.Net;
using System.Net.Http.Json;
using System.Text.Json;
using HrynCo.NotificationService.DAL.Abstract.Providers;
using HrynCo.NotificationService.DAL.Abstract.Repositories;
using HrynCo.NotificationService.DAL.Abstract.Templates;
using Microsoft.Extensions.DependencyInjection;

namespace HrynCo.NotificationService.Web.IntegrationTests;

public sealed class EmailChannelServiceLinkTests(TemplateDatabaseFixture fixture) : IClassFixture<TemplateDatabaseFixture>
{
    [Fact]
    public async Task RenameUpdatesAllReadPathsAndResolvesChannelsByCurrentName()
    {
        await using var context = await DefinitionApiTestContext.CreateAsync(fixture);
        var channel = await SeedAsync(context);
        using (var scope = context.App.Services.CreateScope())
        {
            var services = scope.ServiceProvider.GetRequiredService<INotificationServiceRepository>();
            var service = (await services.GetAsync(context.ServiceId))!;
            service.Name = "Invemory-Renamed";
            await services.SaveAsync(service, false);
        }
        var read = (await context.Client.GetFromJsonAsync<JsonElement>($"/api/v1/email-channels/{channel.Id}")).GetProperty("data");
        Assert.Equal(context.ServiceId, read.GetProperty("serviceId").GetGuid());
        Assert.Equal("Invemory-Renamed", read.GetProperty("serviceName").GetString());
        var current = await context.Client.GetFromJsonAsync<JsonElement>("/api/v1/email-channels?serviceName=Invemory-Renamed");
        Assert.Single(current.GetProperty("data").EnumerateArray());
        var previous = await context.Client.GetFromJsonAsync<JsonElement>("/api/v1/email-channels?serviceName=TestService");
        Assert.Empty(previous.GetProperty("data").EnumerateArray());
        Assert.Contains("Invemory-Renamed", await context.Client.GetStringAsync("/admin/channels"));
        Assert.Contains("Invemory-Renamed", await context.Client.GetStringAsync($"/admin/channels/{channel.Id}"));
    }

    [Fact]
    public async Task EditorAllowsReassignmentWithoutReplacingPasswordOrUsage()
    {
        await using var context = await DefinitionApiTestContext.CreateAsync(fixture);
        var channel = await SeedAsync(context);
        using var scope = context.App.Services.CreateScope();
        var destination = new NotificationServiceInfo { Name = "Invemory-Other" };
        await scope.ServiceProvider.GetRequiredService<INotificationServiceRepository>().SaveAsync(destination, true);
        using var client = context.App.CreateClient(new() { AllowAutoRedirect = false });
        var html = await client.GetStringAsync($"/admin/channels/{channel.Id}");
        Assert.Contains("<select", html);
        Assert.Contains("name=\"ServiceId\"", html);
        Assert.Contains("Invemory-Other", html);
        Assert.DoesNotContain("name=\"ServiceName\"", html);
        var fields = TemplateEditorTestFields.Read(html);
        fields["ServiceId"] = destination.Id.ToString();
        fields["Password"] = "";
        fields["UseSsl"] = "true";
        fields["IsActive"] = "true";
        var response = await client.PostAsync("/admin/channels/save", new FormUrlEncodedContent(fields));
        Assert.Equal(HttpStatusCode.Redirect, response.StatusCode);
        using var readScope = context.App.Services.CreateScope();
        var channels = readScope.ServiceProvider.GetRequiredService<IEmailChannelRepository>();
        var saved = (await channels.GetByIdAsync(channel.Id))!;
        Assert.Equal(destination.Id, saved.ServiceId);
        Assert.Equal("Invemory-Other", saved.ServiceName);
        Assert.Equal("test-only-password", Assert.IsType<SmtpChannelSettings>(saved.Settings).Password);
        Assert.Equal(25, saved.DailyLimit);
        Assert.Equal(250, saved.MonthlyLimit);
        Assert.Equal(2, saved.Priority);
        var summary = Assert.Single(await channels.GetAllWithUsageSummaryAsync(DateOnly.FromDateTime(DateTime.UtcNow)));
        Assert.Equal(1, summary.DailySent);
        Assert.Empty(await channels.GetByServiceAsync(context.ServiceId));
        Assert.Single(await channels.GetByServiceAsync(destination.Id));
    }

    [Theory]
    [InlineData(false)]
    [InlineData(true)]
    public async Task UpdateRejectsMissingServiceWithoutChangingChannel(bool empty)
    {
        await using var context = await DefinitionApiTestContext.CreateAsync(fixture);
        var channel = await SeedAsync(context);
        var response = await context.Client.PutAsJsonAsync($"/api/v1/email-channels/{channel.Id}", new
        {
            serviceId = empty ? Guid.Empty : Guid.NewGuid(), priority = 9,
            settings = (SmtpChannelSettings)channel.Settings, dailyLimit = 1, monthlyLimit = 2, warnThresholdPercent = 80, isActive = false
        });
        Assert.Equal(HttpStatusCode.BadRequest, response.StatusCode);
        var result = await response.Content.ReadFromJsonAsync<JsonElement>();
        Assert.Equal("Select an existing service.", result.GetProperty("error").GetProperty("message").GetString());
        using var scope = context.App.Services.CreateScope();
        var saved = (await scope.ServiceProvider.GetRequiredService<IEmailChannelRepository>().GetByIdAsync(channel.Id))!;
        Assert.Equal(context.ServiceId, saved.ServiceId);
        Assert.Equal(2, saved.Priority);
        Assert.Equal(25, saved.DailyLimit);
    }

    private static async Task<EmailChannel> SeedAsync(DefinitionApiTestContext context)
    {
        using var scope = context.App.Services.CreateScope();
        var channel = new EmailChannel
        {
            ServiceId = context.ServiceId, Priority = 2, EmailChannelType = EmailChannelType.Smtp,
            DailyLimit = 25, MonthlyLimit = 250, IsActive = true,
            Settings = new SmtpChannelSettings
            {
                Host = "smtp.invalid", Port = 587, Username = "test-user", Password = "test-only-password",
                UseSsl = true, FromEmail = "sender@example.invalid", FromName = "Invemory Test"
            }
        };
        await scope.ServiceProvider.GetRequiredService<IEmailChannelRepository>().AddAsync(channel);
        await scope.ServiceProvider.GetRequiredService<IEmailChannelUsageRepository>()
            .IncrementUsageAsync(channel.Id, DateOnly.FromDateTime(DateTime.UtcNow));
        return channel;
    }
}