using System;
using System.Collections.Generic;
using System.Net;
using IntegrationTests.Fakes;
using Microsoft.OneFuzz.Service;
using Xunit;
using Xunit.Abstractions;
using Async = System.Threading.Tasks;
using ScalesetFunction = Microsoft.OneFuzz.Service.Functions.Scaleset;

namespace IntegrationTests.Functions;

[Trait("Category", "Live")]
public class AzureStorageScalesetTest : ScalesetTestBase {
    public AzureStorageScalesetTest(ITestOutputHelper output)
        : base(output, Integration.AzureStorage.FromEnvironment()) { }
}

public class AzuriteScalesetTest : ScalesetTestBase {
    public AzuriteScalesetTest(ITestOutputHelper output)
        : base(output, new Integration.AzuriteStorage()) { }
}

public abstract class ScalesetTestBase : FunctionTestBase {
    public ScalesetTestBase(ITestOutputHelper output, IStorage storage)
        : base(output, storage) { }

    [Theory]
    [InlineData("POST", RequestType.Agent)]
    [InlineData("POST", RequestType.NoAuthorization)]
    [InlineData("PATCH", RequestType.Agent)]
    [InlineData("PATCH", RequestType.NoAuthorization)]
    [InlineData("GET", RequestType.Agent)]
    [InlineData("GET", RequestType.NoAuthorization)]
    [InlineData("DELETE", RequestType.Agent)]
    [InlineData("DELETE", RequestType.NoAuthorization)]
    public async Async.Task UserAuthorization_IsRequired(string method, RequestType authType) {
        var auth = new TestEndpointAuthorization(authType, Logger, Context);
        var func = new ScalesetFunction(Logger, auth, Context);
        var result = await func.Run(TestHttpRequestData.Empty(method));
        Assert.Equal(HttpStatusCode.Unauthorized, result.StatusCode);
    }

    [Fact]
    public async Async.Task Search_SpecificScaleset_ReturnsErrorIfNoneFound() {
        var auth = new TestEndpointAuthorization(RequestType.User, Logger, Context);

        var req = new ScalesetSearch(ScalesetId: Guid.NewGuid());
        var func = new ScalesetFunction(Logger, auth, Context);
        var result = await func.Run(TestHttpRequestData.FromJson("GET", req));

        Assert.Equal(HttpStatusCode.BadRequest, result.StatusCode);
        var err = BodyAs<ProblemDetails>(result);
        Assert.Equal("unable to find scaleset", err.Detail);
    }

    [Fact]
    public async Async.Task Search_AllScalesets_ReturnsEmptyIfNoneFound() {
        var auth = new TestEndpointAuthorization(RequestType.User, Logger, Context);

        var req = new ScalesetSearch();
        var func = new ScalesetFunction(Logger, auth, Context);
        var result = await func.Run(TestHttpRequestData.FromJson("GET", req));

        Assert.Equal(HttpStatusCode.OK, result.StatusCode);
        Assert.Equal("[]", BodyAsString(result));
    }

    [Fact]
    public async Async.Task Create_Scaleset() {
        var auth = new TestEndpointAuthorization(RequestType.User, Logger, Context);

        // override the found user credentials 
        var userObjectId = Guid.NewGuid();
        var userInfo = new UserInfo(ApplicationId: Guid.NewGuid(), ObjectId: userObjectId, "upn");
        Context.UserCredentials = new TestUserCredentials(Logger, Context.ConfigOperations, OneFuzzResult<UserInfo>.Ok(userInfo));

        var poolName = PoolName.Parse("mypool");
        await Context.InsertAll(
            // user must be admin
            new InstanceConfig(Context.ServiceConfiguration.OneFuzzInstanceName!) { Admins = new[] { userObjectId } },
            // pool must exist and be managed
            new Pool(poolName, Guid.NewGuid(), Os.Linux, Managed: true, Architecture.x86_64, PoolState.Running));

        var req = new ScalesetCreate(
            poolName,
            TestVmssOperations.TestSku,
            "Image",
            Region: null,
            Size: 1,
            SpotInstances: false,
            Tags: new Dictionary<string, string>());

        var func = new ScalesetFunction(Logger, auth, Context);
        var result = await func.Run(TestHttpRequestData.FromJson("POST", req));

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

        var resp = BodyAs<ScalesetResponse>(result);
        Assert.Equal(poolName, resp.PoolName);

        // auth should not be included in the response
        Assert.Null(resp.Auth);
    }
}