using MeetingAssistant.LaunchProfiles;
using Microsoft.Extensions.Configuration;

namespace MeetingAssistant.Tests;

public sealed class LaunchProfileOptionsProviderTests
{
    [Fact]
    public void DefaultProfileUsesRootMeetingAssistantConfiguration()
    {
        var provider = CreateProvider(new Dictionary<string, string?>
        {
            ["MeetingAssistant:Hotkey:Toggle"] = "Ctrl+Alt+M",
            ["MeetingAssistant:Recording:TranscriptionProvider"] = "azure-speech",
            ["MeetingAssistant:AzureSpeech:Language"] = "de-DE"
        });

        var profile = provider.GetRequiredProfile(null);

        Assert.Equal("default", profile.Name);
        Assert.Equal("Ctrl+Alt+M", profile.Options.Hotkey.Toggle);
        Assert.Equal("azure-speech", profile.Options.Recording.TranscriptionProvider);
        Assert.Equal("de-DE", profile.Options.AzureSpeech.Language);
    }

    [Fact]
    public void NamedProfileMergesOverrideOntoDefaultConfiguration()
    {
        var provider = CreateProvider(new Dictionary<string, string?>
        {
            ["MeetingAssistant:Hotkey:Toggle"] = "Ctrl+Alt+M",
            ["MeetingAssistant:Recording:TranscriptionProvider"] = "azure-speech",
            ["MeetingAssistant:AzureSpeech:Region"] = "germanywestcentral",
            ["MeetingAssistant:AzureSpeech:Language"] = "de-DE",
            ["MeetingAssistant:AzureSpeech:AutoDetectLanguages:0"] = "de-DE",
            ["MeetingAssistant:LaunchProfiles:english:Hotkey:Toggle"] = "Ctrl+Alt+L",
            ["MeetingAssistant:LaunchProfiles:english:AzureSpeech:Language"] = "en-US",
            ["MeetingAssistant:LaunchProfiles:english:AzureSpeech:AutoDetectLanguages:0"] = "en-US"
        });

        var profile = provider.GetRequiredProfile("english");

        Assert.Equal("english", profile.Name);
        Assert.Equal("Ctrl+Alt+L", profile.Options.Hotkey.Toggle);
        Assert.Equal("azure-speech", profile.Options.Recording.TranscriptionProvider);
        Assert.Equal("germanywestcentral", profile.Options.AzureSpeech.Region);
        Assert.Equal("en-US", profile.Options.AzureSpeech.Language);
        Assert.Equal(["en-US"], profile.Options.AzureSpeech.AutoDetectLanguages);
    }

    [Fact]
    public void CheckedInEnglishProfileUsesLanguageHotkey()
    {
        var provider = CreateProviderFromAppsettings();

        var profile = provider.GetRequiredProfile("english");

        Assert.Equal("Ctrl+Alt+L", profile.Options.Hotkey.Toggle);
    }

    [Fact]
    public void DuplicateProfileHotkeysAreRejected()
    {
        var provider = CreateProvider(new Dictionary<string, string?>
        {
            ["MeetingAssistant:Hotkey:Toggle"] = "Ctrl+Alt+M",
            ["MeetingAssistant:LaunchProfiles:english:Hotkey:Toggle"] = "Ctrl+Alt+M"
        });

        var exception = Assert.Throws<InvalidOperationException>(() => provider.GetHotkeys());
        Assert.Contains("Ctrl+Alt+M", exception.Message, StringComparison.OrdinalIgnoreCase);
    }

    [Fact]
    public void ScreenshotHotkeysAreRegisteredForDefaultAndExplicitProfileOverrides()
    {
        var provider = CreateProvider(new Dictionary<string, string?>
        {
            ["MeetingAssistant:Hotkey:Toggle"] = "Ctrl+Alt+M",
            ["MeetingAssistant:Hotkey:Abort"] = "Ctrl+Alt+Z",
            ["MeetingAssistant:Screenshots:Hotkey"] = "Ctrl+Alt+S",
            ["MeetingAssistant:LaunchProfiles:english:Hotkey:Toggle"] = "Ctrl+Alt+L",
            ["MeetingAssistant:LaunchProfiles:english:Hotkey:Abort"] = "Ctrl+Alt+Shift+D",
            ["MeetingAssistant:LaunchProfiles:english:Screenshots:Hotkey"] = "Ctrl+Alt+Shift+S"
        });

        var hotkeys = provider.GetHotkeys();

        Assert.Contains(hotkeys, hotkey =>
            hotkey.ProfileName == "default" &&
            hotkey.Hotkey == "Ctrl+Alt+S" &&
            hotkey.Action == LaunchProfileHotkeyAction.CaptureScreenshot);
        Assert.Contains(hotkeys, hotkey =>
            hotkey.ProfileName == "english" &&
            hotkey.Hotkey == "Ctrl+Alt+Shift+S" &&
            hotkey.Action == LaunchProfileHotkeyAction.CaptureScreenshot);
        Assert.Contains(hotkeys, hotkey =>
            hotkey.ProfileName == "default" &&
            hotkey.Hotkey == "Ctrl+Alt+Z" &&
            hotkey.Action == LaunchProfileHotkeyAction.AbortRecording);
        Assert.Contains(hotkeys, hotkey =>
            hotkey.ProfileName == "english" &&
            hotkey.Hotkey == "Ctrl+Alt+Shift+D" &&
            hotkey.Action == LaunchProfileHotkeyAction.AbortRecording);
    }

    [Fact]
    public void NamedProfilesDoNotInheritDefaultHotkeysForRegistration()
    {
        var provider = CreateProvider(new Dictionary<string, string?>
        {
            ["MeetingAssistant:Hotkey:Toggle"] = "Ctrl+Alt+M",
            ["MeetingAssistant:Hotkey:Abort"] = "Ctrl+Alt+Z",
            ["MeetingAssistant:Screenshots:Hotkey"] = "Ctrl+Alt+S",
            ["MeetingAssistant:LaunchProfiles:english:AzureSpeech:Language"] = "en-US"
        });

        var hotkeys = provider.GetHotkeys();

        Assert.Equal(3, hotkeys.Count);
        Assert.DoesNotContain(hotkeys, hotkey => hotkey.ProfileName == "english");
    }

    [Fact]
    public void GetProfilesReturnsDefaultAndConfiguredNamedProfiles()
    {
        var provider = CreateProvider(new Dictionary<string, string?>
        {
            ["MeetingAssistant:Hotkey:Toggle"] = "Ctrl+Alt+M",
            ["MeetingAssistant:Recording:TranscriptionProvider"] = "azure-speech",
            ["MeetingAssistant:LaunchProfiles:english:AzureSpeech:Language"] = "en-US"
        });

        var profiles = provider.GetProfiles();

        Assert.Equal(["default", "english"], profiles.Select(profile => profile.Name));
        Assert.Equal("azure-speech", profiles.Single(profile => profile.Name == "english").Options.Recording.TranscriptionProvider);
        Assert.Equal("en-US", profiles.Single(profile => profile.Name == "english").Options.AzureSpeech.Language);
    }

    private static ConfigurationLaunchProfileOptionsProvider CreateProvider(
        IReadOnlyDictionary<string, string?> values)
    {
        var configuration = new ConfigurationBuilder()
            .AddInMemoryCollection(values)
            .Build();
        return new ConfigurationLaunchProfileOptionsProvider(configuration);
    }

    private static ConfigurationLaunchProfileOptionsProvider CreateProviderFromAppsettings()
    {
        var root = FindRepositoryRoot();
        var configuration = new ConfigurationBuilder()
            .AddJsonFile(Path.Combine(root, "MeetingAssistant", "appsettings.json"), optional: false)
            .Build();
        return new ConfigurationLaunchProfileOptionsProvider(configuration);
    }

    private static string FindRepositoryRoot()
    {
        for (var directory = new DirectoryInfo(AppContext.BaseDirectory);
             directory is not null;
             directory = directory.Parent)
        {
            if (File.Exists(Path.Combine(directory.FullName, "MeetingAssistant.slnx")))
            {
                return directory.FullName;
            }
        }

        throw new InvalidOperationException("Could not locate MeetingAssistant.slnx from the test output folder.");
    }
}