using CliFx.Exceptions;
using Shouldly;
using Xunit;
using ZB.MOM.WW.OtOpcUa.Client.CLI.Commands;
using ZB.MOM.WW.OtOpcUa.Client.CLI.Tests.Fakes;

namespace ZB.MOM.WW.OtOpcUa.Client.CLI.Tests;

/// <summary>
/// Regression tests for Client.CLI-003: numeric command options must validate their ranges
/// and report a clean operator-facing error instead of silently passing bad values to the SDK.
/// </summary>
public class CommandRangeValidationTests
{
    /// <summary>Verifies that BrowseCommand rejects negative depth values with a command exception.</summary>
    /// <returns>A task that represents the asynchronous test.</returns>
    [Fact]
    public async Task BrowseCommand_NegativeDepth_ThrowsCommandException()
    {
        var fakeService = new FakeOpcUaClientService();
        var factory = new FakeOpcUaClientServiceFactory(fakeService);
        var command = new BrowseCommand(factory)
        {
            Url = "opc.tcp://localhost:4840",
            Depth = -1
        };

        using var console = TestConsoleHelper.CreateConsole();
        var ex = await Should.ThrowAsync<CommandException>(async () => await command.ExecuteAsync(console));
        ex.Message.ShouldContain("--depth");
    }

    /// <summary>Verifies that BrowseCommand rejects zero depth values with a command exception.</summary>
    /// <returns>A task that represents the asynchronous test.</returns>
    [Fact]
    public async Task BrowseCommand_ZeroDepth_ThrowsCommandException()
    {
        var fakeService = new FakeOpcUaClientService();
        var factory = new FakeOpcUaClientServiceFactory(fakeService);
        var command = new BrowseCommand(factory)
        {
            Url = "opc.tcp://localhost:4840",
            Depth = 0
        };

        using var console = TestConsoleHelper.CreateConsole();
        var ex = await Should.ThrowAsync<CommandException>(async () => await command.ExecuteAsync(console));
        ex.Message.ShouldContain("--depth");
    }

    /// <summary>Verifies that SubscribeCommand rejects zero interval values with a command exception.</summary>
    /// <returns>A task that represents the asynchronous test.</returns>
    [Fact]
    public async Task SubscribeCommand_ZeroInterval_ThrowsCommandException()
    {
        var fakeService = new FakeOpcUaClientService();
        var factory = new FakeOpcUaClientServiceFactory(fakeService);
        var command = new SubscribeCommand(factory)
        {
            Url = "opc.tcp://localhost:4840",
            NodeId = "ns=2;s=N",
            Interval = 0
        };

        using var console = TestConsoleHelper.CreateConsole();
        var ex = await Should.ThrowAsync<CommandException>(async () => await command.ExecuteAsync(console));
        ex.Message.ShouldContain("--interval");
    }

    /// <summary>Verifies that SubscribeCommand rejects negative interval values with a command exception.</summary>
    /// <returns>A task that represents the asynchronous test.</returns>
    [Fact]
    public async Task SubscribeCommand_NegativeInterval_ThrowsCommandException()
    {
        var fakeService = new FakeOpcUaClientService();
        var factory = new FakeOpcUaClientServiceFactory(fakeService);
        var command = new SubscribeCommand(factory)
        {
            Url = "opc.tcp://localhost:4840",
            NodeId = "ns=2;s=N",
            Interval = -50
        };

        using var console = TestConsoleHelper.CreateConsole();
        await Should.ThrowAsync<CommandException>(async () => await command.ExecuteAsync(console));
    }

    /// <summary>Verifies that SubscribeCommand in recursive mode rejects zero max depth with a command exception.</summary>
    /// <returns>A task that represents the asynchronous test.</returns>
    [Fact]
    public async Task SubscribeCommand_RecursiveZeroMaxDepth_ThrowsCommandException()
    {
        // --max-depth only matters when --recursive is set; validation is scoped to that combination.
        var fakeService = new FakeOpcUaClientService();
        var factory = new FakeOpcUaClientServiceFactory(fakeService);
        var command = new SubscribeCommand(factory)
        {
            Url = "opc.tcp://localhost:4840",
            NodeId = "ns=2;s=N",
            Recursive = true,
            MaxDepth = 0
        };

        using var console = TestConsoleHelper.CreateConsole();
        var ex = await Should.ThrowAsync<CommandException>(async () => await command.ExecuteAsync(console));
        ex.Message.ShouldContain("--max-depth");
    }

    /// <summary>Verifies that SubscribeCommand rejects negative duration values with a command exception.</summary>
    /// <returns>A task that represents the asynchronous test.</returns>
    [Fact]
    public async Task SubscribeCommand_NegativeDuration_ThrowsCommandException()
    {
        var fakeService = new FakeOpcUaClientService();
        var factory = new FakeOpcUaClientServiceFactory(fakeService);
        var command = new SubscribeCommand(factory)
        {
            Url = "opc.tcp://localhost:4840",
            NodeId = "ns=2;s=N",
            DurationSeconds = -5
        };

        using var console = TestConsoleHelper.CreateConsole();
        await Should.ThrowAsync<CommandException>(async () => await command.ExecuteAsync(console));
    }

    /// <summary>Verifies that AlarmsCommand rejects zero interval values with a command exception.</summary>
    /// <returns>A task that represents the asynchronous test.</returns>
    [Fact]
    public async Task AlarmsCommand_ZeroInterval_ThrowsCommandException()
    {
        var fakeService = new FakeOpcUaClientService();
        var factory = new FakeOpcUaClientServiceFactory(fakeService);
        var command = new AlarmsCommand(factory)
        {
            Url = "opc.tcp://localhost:4840",
            Interval = 0
        };

        using var console = TestConsoleHelper.CreateConsole();
        var ex = await Should.ThrowAsync<CommandException>(async () => await command.ExecuteAsync(console));
        ex.Message.ShouldContain("--interval");
    }

    /// <summary>Verifies that HistoryReadCommand rejects negative max values with a command exception.</summary>
    /// <returns>A task that represents the asynchronous test.</returns>
    [Fact]
    public async Task HistoryReadCommand_NegativeMax_ThrowsCommandException()
    {
        var fakeService = new FakeOpcUaClientService();
        var factory = new FakeOpcUaClientServiceFactory(fakeService);
        var command = new HistoryReadCommand(factory)
        {
            Url = "opc.tcp://localhost:4840",
            NodeId = "ns=2;s=N",
            MaxValues = -10
        };

        using var console = TestConsoleHelper.CreateConsole();
        var ex = await Should.ThrowAsync<CommandException>(async () => await command.ExecuteAsync(console));
        ex.Message.ShouldContain("--max");
    }

    /// <summary>Verifies that HistoryReadCommand rejects zero interval values with a command exception.</summary>
    /// <returns>A task that represents the asynchronous test.</returns>
    [Fact]
    public async Task HistoryReadCommand_ZeroInterval_ThrowsCommandException()
    {
        var fakeService = new FakeOpcUaClientService();
        var factory = new FakeOpcUaClientServiceFactory(fakeService);
        var command = new HistoryReadCommand(factory)
        {
            Url = "opc.tcp://localhost:4840",
            NodeId = "ns=2;s=N",
            Aggregate = "Average",
            IntervalMs = 0
        };

        using var console = TestConsoleHelper.CreateConsole();
        var ex = await Should.ThrowAsync<CommandException>(async () => await command.ExecuteAsync(console));
        ex.Message.ShouldContain("--interval");
    }
}