using System.Net;
using System.Text.Json;
using FluentAssertions;
using Xunit;

namespace Examples.Integration.Tests;

/// <summary>
/// Integration tests for the Inventory microservice endpoints.
/// </summary>
public sealed class InventoryEndpointTests : IClassFixture<GatewayFixture>
{
    private readonly GatewayFixture _fixture;

    public InventoryEndpointTests(GatewayFixture fixture)
    {
        _fixture = fixture;
    }

    [Fact]
    public async Task ListItems_WithoutFilters_ReturnsAllItems()
    {
        // Act
        var response = await _fixture.GatewayClient.GetAsync("/items");

        // Assert
        response.StatusCode.Should().Be(HttpStatusCode.OK);
        var content = await response.Content.ReadAsStringAsync();
        content.Should().Contain("items");
        content.Should().Contain("totalCount");
    }

    [Fact]
    public async Task ListItems_WithCategoryFilter_ReturnsFilteredItems()
    {
        // Act
        var response = await _fixture.GatewayClient.GetAsync("/items?category=widgets");

        // Assert
        response.StatusCode.Should().Be(HttpStatusCode.OK);
        var content = await response.Content.ReadAsStringAsync();
        content.Should().Contain("widgets");
    }

    [Fact]
    public async Task ListItems_WithPagination_ReturnsPaginatedResponse()
    {
        // Act
        var response = await _fixture.GatewayClient.GetAsync("/items?page=1&pageSize=10");

        // Assert
        response.StatusCode.Should().Be(HttpStatusCode.OK);
        var content = await response.Content.ReadAsStringAsync();
        content.Should().Contain("\"page\":1");
        content.Should().Contain("\"pageSize\":10");
    }

    [Fact]
    public async Task GetItem_WithValidSku_ReturnsItem()
    {
        // Arrange
        var sku = "SKU-001";

        // Act
        var response = await _fixture.GatewayClient.GetAsync($"/items/{sku}");

        // Assert
        response.StatusCode.Should().Be(HttpStatusCode.OK);
        var content = await response.Content.ReadAsStringAsync();
        content.Should().Contain(sku);
        content.Should().Contain("name");
        content.Should().Contain("quantityOnHand");
    }
}