using System.Net;
using System.Net.Http.Json;
using System.Text.Json;
using Microsoft.AspNetCore.Mvc.Testing;
using Microsoft.Extensions.Configuration;

namespace MeetingAssistant.Tests;

public sealed class MeetingWorkflowDiagnosticEndpointTests
{
    [Fact]
    public async Task ReloadEndpointReloadsAutomationRulesPathFromConfigurationFile()
    {
        var root = Path.Combine(Path.GetTempPath(), "meeting-assistant-tests", Guid.NewGuid().ToString("N"));
        Directory.CreateDirectory(root);
        var configPath = Path.Combine(root, "workflow-config.json");
        var firstRulesPath = Path.Combine(root, "first-rules.yaml");
        var secondRulesPath = Path.Combine(root, "second-rules.yaml");
        await File.WriteAllTextAsync(configPath, CreateConfigJson(firstRulesPath));
        await using var factory = new WebApplicationFactory<Program>()
            .WithWebHostBuilder(builder =>
            {
                builder.ConfigureAppConfiguration((_, configuration) =>
                {
                    configuration.AddJsonFile(configPath, optional: false, reloadOnChange: false);
                    configuration.AddInMemoryCollection(new Dictionary<string, string?>
                    {
                        ["MeetingAssistant:FunAsr:Backend:Enabled"] = "false"
                    });
                });
            });
        using var client = factory.CreateClient();

        using var firstResponse = await client.PostAsync("/diagnostics/workflow/reload", null);
        var firstBody = await firstResponse.Content.ReadFromJsonAsync<WorkflowReloadResponse>();
        await File.WriteAllTextAsync(configPath, CreateConfigJson(secondRulesPath));

        using var secondResponse = await client.PostAsync("/diagnostics/workflow/reload", null);
        var secondBody = await secondResponse.Content.ReadFromJsonAsync<WorkflowReloadResponse>();

        Assert.Equal(HttpStatusCode.OK, firstResponse.StatusCode);
        Assert.Equal(firstRulesPath, firstBody?.RulesPath);
        Assert.Equal(HttpStatusCode.OK, secondResponse.StatusCode);
        Assert.Equal(secondRulesPath, secondBody?.RulesPath);
    }

    private static string CreateConfigJson(string rulesPath)
    {
        return JsonSerializer.Serialize(new
        {
            MeetingAssistant = new
            {
                Automation = new
                {
                    RulesPath = rulesPath
                }
            }
        });
    }

    private sealed record WorkflowReloadResponse(string? RulesPath);
}