using System.Net;
using System.Net.Http.Json;
using Npgsql;
using Xunit;

namespace TeamUp.IntegrationTests;

/// <summary>
/// End-to-end skeleton proof: the web host boots, the platform migration applies (vector
/// extension + the 7 module schemas), health is green, every module endpoint seam is wired, and
/// the OpenAPI document is served. All tests share one container (sequential, same collection).
/// </summary>
[Collection(PostgresCollection.Name)]
public sealed class BootAndMigrateTests(PostgresFixture postgres)
{
    private static readonly string[] ExpectedSchemas =
        ["identity", "orgboard", "skills", "integrations", "memory", "assembler", "governance"];

    [Fact]
    public async Task Health_endpoint_reports_200()
    {
        await using var factory = new TeamUpWebFactory(postgres.ConnectionString);
        using var client = factory.CreateClient();

        var response = await client.GetAsync("/health");

        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
    }

    [Fact]
    public async Task Startup_migration_creates_vector_extension_and_module_schemas()
    {
        await using var factory = new TeamUpWebFactory(postgres.ConnectionString);
        using (factory.CreateClient())
        {
            // Creating the client forces the host to start, which applies the migration.
        }

        await using var connection = new NpgsqlConnection(postgres.ConnectionString);
        await connection.OpenAsync();

        await using (var extensionCmd =
            new NpgsqlCommand("SELECT 1 FROM pg_extension WHERE extname = 'vector'", connection))
        {
            Assert.NotNull(await extensionCmd.ExecuteScalarAsync());
        }

        foreach (var schema in ExpectedSchemas)
        {
            await using var schemaCmd = new NpgsqlCommand(
                "SELECT 1 FROM information_schema.schemata WHERE schema_name = @schema", connection);
            schemaCmd.Parameters.AddWithValue("schema", schema);
            Assert.NotNull(await schemaCmd.ExecuteScalarAsync());
        }
    }

    [Theory]
    [InlineData("identity")]
    [InlineData("orgboard")]
    [InlineData("skills")]
    [InlineData("integrations")]
    [InlineData("memory")]
    [InlineData("assembler")]
    [InlineData("governance")]
    public async Task Module_ping_endpoint_responds(string module)
    {
        await using var factory = new TeamUpWebFactory(postgres.ConnectionString);
        using var client = factory.CreateClient();

        var response = await client.GetAsync($"/api/{module}/ping");

        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var payload = await response.Content.ReadFromJsonAsync<ModulePingResponse>();
        Assert.NotNull(payload);
        Assert.Equal(module, payload!.Module);
    }

    [Fact]
    public async Task OpenApi_document_is_served()
    {
        await using var factory = new TeamUpWebFactory(postgres.ConnectionString);
        using var client = factory.CreateClient();

        var response = await client.GetAsync("/openapi/v1.json");

        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
    }

    private sealed record ModulePingResponse(string Module, string Status);
}