using EntKube.Clusters.Infrastructure.Cleura;
using FluentAssertions;

namespace EntKube.Clusters.Tests.Features;

public class CleuraClientTests
{
    [Fact]
    public void ParseAuthResponse_ValidJson_ReturnsToken()
    {
        // The Cleura API returns a JSON body with result and token fields
        // after a successful authentication POST.

        string json = """{"result": "login_ok", "token": "vahkie7EiDaij7chegaitee2zohsh1oh"}""";

        CleuraAuthResponse? response = System.Text.Json.JsonSerializer.Deserialize<CleuraAuthResponse>(json);

        response.Should().NotBeNull();
        response!.Result.Should().Be("login_ok");
        response.Token.Should().Be("vahkie7EiDaij7chegaitee2zohsh1oh");
    }

    [Fact]
    public void ParseDomainsResponse_ValidJson_ReturnsRegions()
    {
        // The domains endpoint returns a list of domains, each with a region identifier.

        string json = """
        {
            "domains": [
                {"name": "my-domain", "region": "Sto2", "id": "abc123"},
                {"name": "my-domain", "region": "Fra1", "id": "def456"}
            ]
        }
        """;

        CleuraDomainsResponse? response = System.Text.Json.JsonSerializer.Deserialize<CleuraDomainsResponse>(json,
            new System.Text.Json.JsonSerializerOptions { PropertyNameCaseInsensitive = true });

        response.Should().NotBeNull();
        response!.Domains.Should().HaveCount(2);
        response.Domains[0].Region.Should().Be("Sto2");
        response.Domains[1].Region.Should().Be("Fra1");
    }

    [Fact]
    public void BuildAuthRequest_FormatsCorrectly()
    {
        // Verify the authentication request body matches Cleura's expected format.

        CleuraAuthRequest request = new("my-user", "my-pass");

        string json = System.Text.Json.JsonSerializer.Serialize(request);

        json.Should().Contain("\"auth\"");
        json.Should().Contain("\"login\"");
        json.Should().Contain("\"password\"");
        json.Should().Contain("my-user");
    }

    [Fact]
    public void BuildAuthRequest_WithTwofaMethod_IncludesTwofaMethod()
    {
        // When a 2FA method is specified, the auth body should include
        // the twofa_method field so Cleura selects that method.

        CleuraAuthRequest request = new("my-user", "my-pass", "sms");

        string json = System.Text.Json.JsonSerializer.Serialize(request);

        json.Should().Contain("\"twofa_method\"");
        json.Should().Contain("sms");
    }

    [Fact]
    public void BuildAuthRequest_WithoutTwofaMethod_OmitsTwofaMethod()
    {
        // Without a 2FA method, the twofa_method field should not be present.

        CleuraAuthRequest request = new("my-user", "my-pass");

        string json = System.Text.Json.JsonSerializer.Serialize(request);

        json.Should().NotContain("twofa_method");
    }

    [Fact]
    public void ParseAuthResponse_TwoFactorOptions_IndicatesNeed()
    {
        // When 2FA is enabled but no code is provided, Cleura responds with
        // twofactor_options listing available methods (sms, webauthn).

        string json = """{"result": "twofactor_options", "token": "", "options": ["sms", "webauthn"]}""";

        CleuraAuthResponse? response = System.Text.Json.JsonSerializer.Deserialize<CleuraAuthResponse>(json);

        response.Should().NotBeNull();
        response!.Result.Should().Be("twofactor_options");
        response.Options.Should().Contain("sms");
        response.Options.Should().Contain("webauthn");
    }

    [Fact]
    public void ParseAuthResponse_TwoFactorRequired_ReturnsVerification()
    {
        // When a 2FA method is selected, Cleura responds with twofactor_required
        // and a verification token for subsequent steps.

        string json = """{"result": "twofactor_required", "token": "", "verification": "xe9hik8q6r"}""";

        CleuraAuthResponse? response = System.Text.Json.JsonSerializer.Deserialize<CleuraAuthResponse>(json);

        response.Should().NotBeNull();
        response!.Result.Should().Be("twofactor_required");
        response.Verification.Should().Be("xe9hik8q6r");
    }

    [Fact]
    public void BuildRequest2faCode_FormatsCorrectly()
    {
        // The request2facode endpoint expects a specific JSON structure
        // with the login and verification token from the prior step.

        CleuraRequest2faCodeRequest request = new("JohnDoe", "xe9hik8q6r");

        string json = System.Text.Json.JsonSerializer.Serialize(request);

        json.Should().Contain("\"request2fa\"");
        json.Should().Contain("\"login\"");
        json.Should().Contain("\"verification\"");
        json.Should().Contain("JohnDoe");
        json.Should().Contain("xe9hik8q6r");
    }

    [Fact]
    public void BuildVerify2fa_FormatsCorrectly()
    {
        // The verify2fa endpoint expects the login, verification, and integer code.

        CleuraVerify2faRequest request = new("JohnDoe", "xe9hik8q6r", 123456);

        string json = System.Text.Json.JsonSerializer.Serialize(request);

        json.Should().Contain("\"verify2fa\"");
        json.Should().Contain("\"login\"");
        json.Should().Contain("\"verification\"");
        json.Should().Contain("\"code\"");
        json.Should().Contain("JohnDoe");
        json.Should().Contain("xe9hik8q6r");
        json.Should().Contain("123456");
    }
}