using MeterVault.App;
using MeterVault.Core.Domain;
using MeterVault.Integration.Tests.Costing;
using Microsoft.EntityFrameworkCore;

namespace MeterVault.Integration.Tests.MeterPage;

/// <summary>
/// Brief §3.2 "Change the source/connector: Meter → Sources → Edit connection": the connector a source uses opens for
/// editing from the meter's Sources tab, through the connector page's way back to the meter (the draft detour).
/// </summary>
[Collection("Timescale")]
public sealed class MeterSourcesRenderTests(TimescaleFixture fx)
{
    [Fact]
    public async Task The_sources_tab_links_the_connector_in_use_for_editing()
    {
        await using var box = new CostSandbox(fx);
        var type = await box.TypeAsync("m³");
        var meter = await box.MeterAsync(type, MeterMode.CumulativeCounter, "m³", name: $"Wasser {Guid.NewGuid():N}");
        int endpointId;
        int sourceId;
        await using (var db = fx.CreateContext())
        {
            var endpoint = new IngestionEndpoint
            {
                Type = EndpointType.HomeAssistant,
                Name = $"HA {Guid.NewGuid():N}",
                Config = """{"baseUrl":"http://ha.local:8123","tokenEnv":"HA_TOKEN"}""",
            };
            db.IngestionEndpoints.Add(endpoint);
            await db.SaveChangesAsync();
            endpointId = endpoint.Id;
            var source = new MeterSource
            {
                MeterId = meter,
                SourceType = SourceType.HomeAssistant,
                EndpointId = endpointId,
                Config = """{"entityId":"sensor.water_total"}""",
            };
            db.MeterSources.Add(source);
            await db.SaveChangesAsync();
            sourceId = source.Id;
        }

        try
        {
            using var factory = new MeterVaultAppFactory(fx.ConnectionString);
            using var client = factory.CreateClient();
            var html = System.Net.WebUtility.HtmlDecode(
                await client.GetStringAsync(new Uri($"/meters/{meter}?tab=sources", UriKind.Relative)));

            var edit = MeterLinks.EditConnector(meter, sourceId, SourceType.HomeAssistant, endpointId);
            Assert.Contains($"href=\"{edit}\"", html, StringComparison.Ordinal);
        }
        finally
        {
            await using var db = fx.CreateContext();
            await db.MeterSources.Where(s => s.Id == sourceId).ExecuteDeleteAsync();
            await db.IngestionEndpoints.Where(e => e.Id == endpointId).ExecuteDeleteAsync();
        }
    }
}