using WxAgent.Core;
using Xunit;

namespace WxAgent.Core.Tests;

public sealed class WechatManagementTests
{
    [Fact]
    public void RequireConfirmation_RejectsMissingOrWrongToken()
    {
        var missing = Assert.Throws<WxAgentException>(() => WechatOperationPolicy.RequireConfirmation(null, "delete session"));
        var wrong = Assert.Throws<WxAgentException>(() => WechatOperationPolicy.RequireConfirmation("confirm", "delete session"));

        Assert.Equal(WxAgentErrorCode.InvalidArgument, missing.Code);
        Assert.Equal(WxAgentErrorCode.InvalidArgument, wrong.Code);
    }

    [Fact]
    public void RequireConfirmation_AcceptsExactToken()
    {
        WechatOperationPolicy.RequireConfirmation(WechatOperationPolicy.Confirmation, "delete session");
    }

    [Fact]
    public void ValidateNames_RequiresAtLeastOneUsableName()
    {
        Assert.Throws<WxAgentException>(() => WechatOperationPolicy.ValidateNames([], "members"));
        Assert.Throws<WxAgentException>(() => WechatOperationPolicy.ValidateNames(["ok", ""], "members"));
        Assert.Throws<WxAgentException>(() => WechatOperationPolicy.ValidateNames(["same", "same"], "members"));
        WechatOperationPolicy.ValidateNames(["one", "two"], "members");
    }

    [Fact]
    public void RequireUnique_RejectsMissingAndAmbiguousTargets()
    {
        Assert.Equal("one", WechatOperationPolicy.RequireUnique(new[] { "one" }, "target"));
        Assert.Equal(WxAgentErrorCode.ControlNotFound,
            Assert.Throws<WxAgentException>(() => WechatOperationPolicy.RequireUnique(Array.Empty<string>(), "target")).Code);
        Assert.Equal(WxAgentErrorCode.ControlNotFound,
            Assert.Throws<WxAgentException>(() => WechatOperationPolicy.RequireUnique(new[] { "one", "two" }, "target")).Code);
    }

    [Fact]
    public void OperationResult_UnconfirmedIsNotSuccessAndWarnsAgainstRetry()
    {
        var result = WechatOperationResult.Unconfirmed("Submission");
        Assert.False(result.Success);
        Assert.Equal(WxAgentErrorCode.ResultUnconfirmed, result.Code);
        Assert.Contains("Do not retry", result.Message);
    }

    [Fact]
    public void OperationResult_OkHasNoErrorCode()
    {
        var result = WechatOperationResult.Ok("done");
        Assert.True(result.Success);
        Assert.Null(result.Code);
        Assert.Equal("done", result.Message);
    }
}