using dy.net.model.dto;
using dy.net.storage;
using dy.net.Tests.TestInfrastructure;
using Xunit;

namespace dy.net.Tests;

public class LiveWebDavTests
{
    [LiveWebDavFact("ALIST")]
    public Task AList_ProbeContract() => ProbeAsync("ALIST");

    [LiveWebDavFact("OPENLIST")]
    public Task OpenList_ProbeContract() => ProbeAsync("OPENLIST");

    private static async Task ProbeAsync(string provider)
    {
        var prefix = $"DYSYNC_TEST_{provider}_";
        var basePath = StoragePath.NormalizeRemote(Environment.GetEnvironmentVariable(prefix + "BASE_PATH"));
        if (basePath == "/" || !basePath.Contains("dysync-test", StringComparison.OrdinalIgnoreCase))
            throw new InvalidOperationException($"{prefix}BASE_PATH 必须是包含 dysync-test 的非根目录");

        var runPath = StoragePath.CombineRemote(basePath, "run-" + Guid.NewGuid().ToString("N"));
        var factory = new LiveHttpClientFactory();
        using var host = await WebDavTestHost.CreateAsync(factory, factory, new WebDavTestRequest
        {
            Endpoint = Environment.GetEnvironmentVariable(prefix + "ENDPOINT"),
            BasePath = runPath,
            UserName = Environment.GetEnvironmentVariable(prefix + "USERNAME"),
            Password = Environment.GetEnvironmentVariable(prefix + "PASSWORD"),
            AllowInvalidCertificate = ReadBoolean(prefix + "ALLOW_INVALID_CERTIFICATE")
        });

        try
        {
            var result = await host.Storage.ProbeAsync(host.Settings);
            Assert.True(result.Success, result.Message);
        }
        finally
        {
            // The host is configured to a random child of the explicitly safe test path.
            // Deleting "/" here deletes only that random child, never the WebDAV account root.
            await host.Storage.DeleteAsync("/");
        }
    }

    private static bool ReadBoolean(string name)
    {
        var value = Environment.GetEnvironmentVariable(name);
        return value == "1" || bool.TryParse(value, out var parsed) && parsed;
    }
}

[AttributeUsage(AttributeTargets.Method)]
internal sealed class LiveWebDavFactAttribute : FactAttribute
{
    public LiveWebDavFactAttribute(string provider)
    {
        var prefix = $"DYSYNC_TEST_{provider}_";
        var required = new[] { "ENDPOINT", "BASE_PATH", "USERNAME", "PASSWORD" };
        var missing = required.Where(name => string.IsNullOrWhiteSpace(Environment.GetEnvironmentVariable(prefix + name))).ToList();
        if (missing.Count > 0)
            Skip = $"未配置可选 {provider} 实测环境变量：{string.Join(", ", missing)}";
    }
}