@page "/" 
@page "/menu/{topic?}"
@using BLAIzor.Models
@using BLAIzor.Services
@using BLAIzor.Components.Partials
@using Google.Cloud.Speech.V1
@using Microsoft.AspNetCore.Identity.UI.Services
@using System.Text
@using System.Net
@using System.Text.Json
@using Sidio.Sitemap.Blazor
@inject AIService ChatGptService
@rendermode InteractiveServer
@inject IJSRuntime jsRuntime;
@inject IConfiguration configuration
@inject ContentService _contentService
@inject ContentEditorService _contentEditorService
@inject ScopedContentService _scopedContentService
@* @inject IEmailSender _emailService *@
@inject NavigationManager _navigationManager
@inject IHttpContextAccessor HttpContextAccessor
@inject DesignTemplateService DesignTemplateService
@inject CssTemplateService CssTemplateService
@inject CssInjectorService CssService
@inject HttpClient Http
@attribute [Sitemap]
<ErrorBoundary>
    <ChildContent>
<div class="page" style="z-index: 1">
    <NavMenu MenuString="@Menu" OnMenuClicked=@MenuClick></NavMenu>
    <main>

        <article class="content text-center" style="position: relative; z-index: 4;">
            <PageTitle>Home</PageTitle>
            <VideoComponent SelectedBrandName="@selectedBrandName" />
            @* <HeadContent>

                <style id="seemgen-style">@dynamicallyLoadedCss</style>

            </HeadContent> *@

            <div id="maincontrol" >


                @*  <div class="hoverslide"> *@

                <div class="displaysearch">
                    <div class="searchBox">

                        <input @oninput="(e) => UserInput = e.Value.ToString()"
                               @onkeydown="@Enter" class="searchInput" type="text" name="" value="@UserInput" placeholder="Ask any question">
                        <button data-hint="ask anything" class="searchButton border-0" @onclick="SendUserQuery" href="#">
                            <i class="fa-solid fa-hexagon-nodes-bolt" style="font-size:20px"></i>
                        </button>
                    </div>

                    @{
                        @if(VoiceEnabled)
                        {                            
                            if(STTEnabled)
                            {
                                <button id="recButton" class="btn btn-primary voicebutton" onclick="startRecording()"><i class="fa-solid fa-microphone"></i></button>
                                <button id="stopButton" class="btn btn-primary voicebutton" onclick="stopRecording()" hidden><i class="fa-solid fa-microphone-slash"></i></button>
                            }

                            if(TTSEnabled)
                            {
                                if (!AiVoicePermitted)
                                {
                                    <button data-hint="listen" class="btn btn-primary voicebutton" @onclick="AllowAIVoice">
                                        <i class="fa-solid fa-volume-xmark"></i>

                                    </button>
                                }
                                else
                                {
                                    <button data-hint="listen" class="btn btn-primary voicebutton" @onclick="MuteAI"><i class="fa-solid fa-volume-high"></i></button>
                                }
                                <audio id="audioPlayer" hidden style="display: none;"></audio>
                            }
                        }
                    }


                </div>

                @*  Type anything *@

                @*  </div> *@
            </div>

            <p id="recordingText"></p>
            <div id="currentContent">
                @{
                    if (!string.IsNullOrEmpty(HtmlContent.ToString()))
                    {
                        <div class="pt-5 @FirstColumnClass">
                            @((MarkupString)HtmlContent.ToString())
                        </div>
                        if (isEmailFormVisible)
                        {
                            <div class="pt-5 col-12 col-md-6">
                                <ContactFormComponent ContactFormModel="@ContactFormModel" DocumentEmailAddress="@DocumentEmailAddress" OnDataChanged="@ContentChangedInForm"></ContactFormComponent>
                                <button @onclick="CancelEmail" class="btn btn-primary">Cancel</button>
                            </div>

                        }
                    }
                    else
                    {
                        <div class="text-center row" style="height: 70vh;">
                            <p>@StatusContent</p>
                            <div class="mydiv"></div>
                            <div class="mydiv"></div>
                            <div class="mydiv"></div>
                            <div class="mydiv"></div>
                            <div class="mydiv"></div>


                        </div>
                    }


                }
            </div>

            <button class="btn btn-primary" @onclick="HomeClick"><i class="fa-solid fa-rotate"></i></button>
            @* <FormWizardComponent SessionId="@sessionId"></FormWizardComponent> *@

        </article>
    </main>
</div>
    </ChildContent>
    <ErrorContent Context="ex">
        <p role="alert">An error occurred: @ex.Message</p>
        <p>Please try again later.</p>
        @* You can log the exception here if you want *@
        @{
            Console.WriteLine($"Error caught by ErrorBoundary: {ex.Message}");
        }
    </ErrorContent>
</ErrorBoundary>
<script>

    var sessionId = null;

    function setSessionId(id) {
    sessionId = id;
    console.log("Session ID set:", sessionId);
    }

    function callAI(inputString) {
    console.log(sessionId);
    DotNet.invokeMethodAsync('BLAIzor', 'CallCSharpMethod2', inputString, sessionId, false)
    .then(response => console.log(response))
    .catch(error => console.error(error));
    }

</script>
<script>
    function openCalendar(calendlyUserName) {
    console.log(calendlyUserName);
    Calendly.initPopupWidget({
    url: 'https://calendly.com/' + calendlyUserName + '?name=JohnDoe&email=john.doe@example.com'
    });
    }
</script>

<script>
    function openContactForm(emailAddress) {
    console.log(emailAddress);
    if (emailAddress) {
    DotNet.invokeMethodAsync('BLAIzor', 'OpenEmailForm2', emailAddress)
    }
    }
</script>

@code {
    [Parameter]
    public string? topic { get; set; }
    public static Index myHome;
    private string? Subdomain;
    public int SiteId;
    public SiteInfo SiteInfo;
    private StringBuilder HtmlContent = new StringBuilder("");
    private string TextContent = "";
    private string StatusContent = "";
    private string UserInput = string.Empty;
    private string ChatGptResponse = string.Empty;
    private bool isRecording = false;

    private string FirstColumnClass = "";
    private bool isEmailFormVisible = false;

    private ContactFormModel ContactFormModel = new();
    // private string? SuccessMessage;
    // private string? ErrorMessage;
    private string? DocumentEmailAddress = "";
    private string selectedBrandName = "default";
    private string dynamicallyLoadedCss = string.Empty;
    private string collectionName = "html_snippets";
    private string sessionId;
    private static readonly Dictionary<string, Index> _instances = new();
    private string Menu;
    private bool VoiceEnabled;
    private bool TTSEnabled;
    private bool STTEnabled;
    private bool _initVoicePending = false;
    private bool welcomeStage = true;
    private bool AiVoicePermitted = false;


    private string GetApiKey() =>
            configuration?.GetSection("ElevenLabsAPI")?.GetValue<string>("ApiKey") ?? string.Empty;


    private void AllowAIVoice()
    {
        AiVoicePermitted = true;
    }
    private void MuteAI()
    {
        AiVoicePermitted = false;
    }

    private async Task ConvertTextToSpeech()
    {
        // string plainText = WebUtility.HtmlDecode(HtmlContent.ToString());

        if (string.IsNullOrWhiteSpace(TextContent) || VoiceEnabled == false || TTSEnabled == false || welcomeStage || !AiVoicePermitted)
            return;

        Console.WriteLine("------------------------------OMGOMGOMG TTS call!!!!-------------");

        var requestContent = new
        {
            text = TextContent,
            // model_id = "eleven_multilingual_v2",
            model_id = "eleven_flash_v2_5",
            voice_settings = new
            {
                stability = 0.5,
                similarity_boost = 0.75,
                speed = 1
            }
        };

        var requestJson = JsonSerializer.Serialize(requestContent);
        string voiceId;
        if(SiteInfo.voiceId != null)
        {
            voiceId = SiteInfo.voiceId;
        }
        else
        {
            voiceId = "rE22Kc7UGoQj4zdHNYvd";            
        }
        // string voiceId = "yyPLNYHg3CvjlSdSOdLh";

        var httpRequest = new HttpRequestMessage(HttpMethod.Post, $"https://api.elevenlabs.io/v1/text-to-speech/{voiceId}/stream")
            {
                Content = new StringContent(requestJson, Encoding.UTF8, "application/json")
            };

        httpRequest.Headers.Add("xi-api-key", GetApiKey());

        var response = await Http.SendAsync(httpRequest);
        if (response.IsSuccessStatusCode)
        {
            var audioBytes = await response.Content.ReadAsByteArrayAsync();
            var base64Audio = Convert.ToBase64String(audioBytes);
            var audioDataUrl = $"data:audio/mpeg;base64,{base64Audio}";

            await jsRuntime.InvokeVoidAsync("playAudio", audioDataUrl);
        }
        else
        {
            // Handle error response
            var errorContent = await response.Content.ReadAsStringAsync();
            Console.Error.WriteLine($"Error: {errorContent}");
        }
    }

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender)
        {
            await jsRuntime.InvokeVoidAsync("setSessionId", sessionId);
            await jsRuntime.InvokeVoidAsync("initHints");

            // sessionId = Guid.NewGuid().ToString();
            // _instances[sessionId] = this;

            Console.Write($"\n\n SessionId: {sessionId}\n\n");
            // _scopedContentService.OnBrandNameChanged += HandleBrandNameChanged;
            if (!string.IsNullOrEmpty(_scopedContentService.SelectedBrandName))
            {
                selectedBrandName = _scopedContentService.SelectedBrandName;
            }
            else
            {
                _scopedContentService.SelectedBrandName = "default";
                selectedBrandName = "default";
            }
            Subdomain = HttpContextAccessor.HttpContext?.Items["Subdomain"]?.ToString();
            SiteInfo = await _scopedContentService.GetSiteInfoByNameAsync(Subdomain);
            if (SiteInfo != null && SiteInfo.IsPublished)
            {

                SiteId = SiteInfo.Id;

                _scopedContentService.SelectedBrandName = SiteInfo.SiteName;

                TTSEnabled = SiteInfo.TTSActive;
                STTEnabled = SiteInfo.STTActive;
            }
            else
            {
                SiteId = 1;
                _scopedContentService.SelectedBrandName = "default";
                TTSEnabled = false;
                STTEnabled = false;
            }
            _scopedContentService.SelectedSiteId = SiteId;

            Console.Write("------------------------");
            // Load the CSS template for the selected brand from the database
            var designTemplate = await DesignTemplateService.GetByIdAsync((int)SiteInfo.TemplateId!);
            var cssTemplate = await CssTemplateService.GetByDesignTemplateIdAsync((int)SiteInfo.TemplateId);
            collectionName = designTemplate.QDrandCollectionName;

            if (cssTemplate != null)
            {
                dynamicallyLoadedCss = cssTemplate.CssContent; // Assuming Content holds the CSS string
                var cssPath = await CssTemplateService.SaveTempCssFileAsync(dynamicallyLoadedCss, sessionId);
                await jsRuntime.InvokeVoidAsync("seemgen.injectCssFile", cssPath);

                //await CssService.ApplyCssAsync(dynamicallyLoadedCss);
            }


            Console.Write($"------------------------ {SiteInfo.MenuItems}, {SiteId}, {SiteInfo.TemplateId}, {SiteInfo.SiteName}");

            Menu = await GetMenuList();
            if (string.IsNullOrEmpty(HtmlContent.ToString()))
            {
                if(!string.IsNullOrWhiteSpace(topic))
                {
                    UserInput = topic;
                    await ChatGptService.ProcessContentRequest(sessionId, UserInput, SiteId, (int)SiteInfo.TemplateId!, collectionName, Menu, true);
                }
                else
                {                    
                    await ChatGptService.GetChatGptWelcomeMessage(sessionId, SiteId, Menu);
                }
                // HtmlContent = await ChatGptService.GetChatGptWelcomeMessage();
                // UserInput = "Sumerize for me, what is this website about, and what can I do on this website?";
                // await ChatGptService.ProcessUserIntent(sessionId, UserInput, SiteId, (int)SiteInfo.TemplateId!, collectionName, Menu);
            }
            UserInput = string.Empty;
            // await InvokeAsync(StateHasChanged);
            _initVoicePending = true;
        }

        if (_initVoicePending)
        {
            Console.WriteLine("PENDING VOICE--------------------------------------------------");
            _initVoicePending = false;
            await jsRuntime.InvokeVoidAsync("initVoiceRecorder", "ProcessAudio2");
        }
    }

    public async void MenuClick(string menuName)
    {
        await CallCSharpMethod2(menuName, sessionId, true);
    }

    public void HomeClick()
    {
        //ChatGptService.OnContentReceived -= UpdateContent;
        AIService.OnContentReceived -= UpdateContent;
        _navigationManager.Refresh(true);
    }

    private void CancelEmail()
    {
        FirstColumnClass = "";
        isEmailFormVisible = false;
        StateHasChanged();
    }

    public Index()
    {
        myHome = this; // Set the static reference to the current instance
    }

    [JSInvokable("OpenEmailForm2")]
    public static async void OpenEmailForm2(string emailAddress)
    {
        if (myHome != null)
        {
            await myHome.DisplayEmailForm(emailAddress);
        }
        Console.Write("openEmail with: " + emailAddress);
    }

    public async Task DisplayEmailForm(string emailAddress)
    {
        FirstColumnClass = "col-12 col-md-6";
        DocumentEmailAddress = emailAddress;
        isEmailFormVisible = true;
        StateHasChanged();
        var result = await jsRuntime.InvokeAsync<object>("getDivContent", "currentContent");
        _scopedContentService.CurrentDOM = JsonSerializer.Serialize(result);
        // Console.Write($"{_scopedContentService.CurrentDOM}");
    }


    [JSInvokable("CallCSharpMethod2")]
    public static async Task CallCSharpMethod2(string input, string sessionId, bool forceUnModified = false)
    {
        // if (myHome != null)
        // {
        //     await myHome.HandleJsCall(input, );
        // }

        if (_instances.TryGetValue(sessionId, out var instance))
        {
            await instance.HandleJsCall(input, sessionId, forceUnModified);
        }
        Console.Write("Button clicked:" + input);
    }

    [JSInvokable("ProcessAudio2")]
    public static async Task ProcessAudio2(string base64Audio, string sessionId)
    {

        Console.Write("audio incoming");
        if (myHome != null)
        {
            if (myHome.STTEnabled == false) return;
            Console.WriteLine("STT ENABLED -------------------------------------------------------------------------------");
            var languageCode = "hu-HU";
            if (myHome._scopedContentService.SelectedLanguage == "Hungarian")
            {
                languageCode = "hu-HU";
            }
            else if (myHome._scopedContentService.SelectedLanguage == "English")
            {
                languageCode = "en-US";
            }
            else if (myHome._scopedContentService.SelectedLanguage == "German")
            {
                languageCode = "de-DE";
            }
            var credentialsPath = myHome.configuration.GetSection("GoogleAPI").GetValue<string>("CredentialsPath");
            Console.Write(credentialsPath);
            var builder = new SpeechClientBuilder
                {
                    CredentialsPath = credentialsPath
                };
            var speech = builder.Build();

            byte[] audioBytes = Convert.FromBase64String(base64Audio);
            myHome.HtmlContent.Clear();
            var response = await speech.RecognizeAsync(new RecognitionConfig
                {
                    Encoding = RecognitionConfig.Types.AudioEncoding.Mp3,
                    SampleRateHertz = 48000, // Match the actual sample rate
                    LanguageCode = languageCode
                }, RecognitionAudio.FromBytes(audioBytes));
            Console.Write("BILLED: " + response.TotalBilledTime);
            foreach (var result in response.Results)
            {
                //Console.Write("RESULT: " + result.Alternatives.Count);
                foreach (var alternative in result.Alternatives)
                {
                    //Console.WriteLine($"Transcription: {alternative.Transcript}");
                    await myHome.HandleVoiceCommand(alternative.Transcript, sessionId);
                }
            }
        }
    }

    private async Task SendMessage()
    {
        Console.WriteLine("Button clicked!");
        var menu = await GetMenuList();
        HtmlContent.Clear();
        await ChatGptService.ProcessUserIntent(sessionId, UserInput, SiteId, (int)SiteInfo.TemplateId!, collectionName, menu);
        UserInput = string.Empty;
    }



    protected override async Task OnInitializedAsync()
    {
        _scopedContentService.OnBrandNameChanged += HandleBrandNameChanged;
        // ChatGptService.OnContentReceived += UpdateContent;
        AIService.OnContentReceived += UpdateContent;
        AIService.OnContentReceiveFinished += UpdateFinished;
        // ChatGptService.OnStatusChangeReceived += UpdateStatus;
        AIService.OnStatusChangeReceived += UpdateStatus;
        AIService.OnTextContentAvailable += UpdateTextContentForVoice;
        sessionId = Guid.NewGuid().ToString();
        _instances[sessionId] = this;

        VoiceEnabled = configuration?.GetSection("AiSettings")?.GetValue<bool>("VoiceActivated") ?? false;
    }

    private async void UpdateContent(string receivedSessionId, string content)
    {
        if (receivedSessionId == sessionId) // Only accept messages meant for this tab
        {

            HtmlContent.Clear();
            HtmlContent.Append(content);
            //InvokeAsync(StateHasChanged); // Ensures UI updates dynamically
            await InvokeAsync(() =>
            {
                StateHasChanged();
            });
            //_scopedContentService.CurrentDOM = await jsRuntime.InvokeAsync<string>("getDivContent", "currentContent");
        }
    }

    private async void UpdateTextContentForVoice(string receivedSessionId, string content)
    {
        if (receivedSessionId == sessionId) // Only accept messages meant for this tab
        {

            TextContent = content;
            await ConvertTextToSpeech();
            //_scopedContentService.CurrentDOM = await jsRuntime.InvokeAsync<string>("getDivContent", "currentContent");
        }
    }

    private async void UpdateFinished(string receivedSessionId)
    {
        if (receivedSessionId == sessionId) // Only accept messages meant for this tab
        {
            Console.WriteLine("Content update finished");
            var result = await jsRuntime.InvokeAsync<object>("getDivContent", "currentContent");
            //await ConvertTextToSpeech();
            _scopedContentService.CurrentDOM = JsonSerializer.Serialize(result);
            Console.Write(_scopedContentService.CurrentDOM);
        }
    }

    private async Task ContentChangedInForm()
    {
        var result = await jsRuntime.InvokeAsync<object>("getDivContent", "currentContent");
        _scopedContentService.CurrentDOM = JsonSerializer.Serialize(result);
        Console.Write(_scopedContentService.CurrentDOM);
    }

    private async void UpdateStatus(string receivedSessionId, string content)
    {
        if (receivedSessionId == sessionId) // Only accept messages meant for this tab
        {
            StatusContent = content;
            //InvokeAsync(StateHasChanged); // Ensures UI updates dynamically
            await InvokeAsync(() =>
            {
                StateHasChanged();
            });
        }
    }

    public async Task Enter(KeyboardEventArgs e)
    {
        if (e.Code == "Enter" || e.Code == "NumpadEnter")
        {
            var menu = await GetMenuList();
            HtmlContent.Clear();
            string input = "Please tell me more about: " + UserInput;
            await ChatGptService.ProcessUserIntent(sessionId, input, SiteId, (int)SiteInfo.TemplateId!, collectionName, menu);
            UserInput = string.Empty;
        }
    }

    public async Task HandleVoiceCommand(string input, string sessionId)
    {
        // HtmlContent = string.Empty;
        UserInput = input;
        await InvokeAsync(StateHasChanged);

        await SendUserQuery();
        //UserInput = string.Empty;
    }

    public async Task HandleJsCall(string input, string sessionId, bool forceUnmodified)
    {
        HtmlContent.Clear();
        await InvokeAsync(StateHasChanged);
        UserInput = input;
        await DisplayMenuContent(input, forceUnmodified);
        UserInput = string.Empty;
        await InvokeAsync(StateHasChanged);
    }

    private async Task SendUserQuery()
    {
        welcomeStage = false;
        if (!string.IsNullOrEmpty(UserInput))
        {
            HtmlContent.Clear();
            var menu = await GetMenuList();
            await ChatGptService.ProcessUserIntent(sessionId, UserInput, SiteId, (int)SiteInfo.TemplateId!, collectionName, menu);
            UserInput = string.Empty;
        }
    }

    private async Task DisplayMenuContent(string input, bool forceUnmodified)
    {
        welcomeStage = false;
        if (!string.IsNullOrEmpty(UserInput))
        {
            HtmlContent.Clear();
            var menu = await GetMenuList();
            var menuItem = (await GetMenuItems()).Where(m => m.Name == input).FirstOrDefault();
            if (menuItem == null)
            {
                await ChatGptService.ProcessContentRequest(sessionId, input, SiteId, (int)SiteInfo.TemplateId!, collectionName, menu, forceUnmodified);
            }
            else
            {
                await ChatGptService.ProcessContentRequest(sessionId, menuItem, SiteId, (int)SiteInfo.TemplateId!, collectionName, menu, forceUnmodified);
            }
            UserInput = string.Empty;
        }
    }

    private async Task<string> GetMenuList()
    {
        List<MenuItem> menuItems = (await _contentEditorService.GetMenuItemsBySiteIdAsync(SiteId)).Where(m => m.ShowInMainMenu == true).OrderBy(m => m.SortOrder).ToList();
        string menuList = "";
        foreach (MenuItem item in menuItems)
        {
            menuList += item.Name + ",";
        }
        return menuList;
    }

    private async Task<List<MenuItem>> GetMenuItems()
    {
        List<MenuItem> menuItems = (await _contentEditorService.GetMenuItemsBySiteIdAsync(SiteId)).Where(m => m.ShowInMainMenu == true).OrderBy(m => m.SortOrder).ToList();
        return menuItems;
    }

    private async void HandleBrandNameChanged()
    {
        selectedBrandName = _scopedContentService.SelectedBrandName;
        //StateHasChanged();
        await InvokeAsync(() =>
        {
            StateHasChanged();
        });
    }

    public void Dispose()
    {
        dynamicallyLoadedCss = "";
        HtmlContent.Clear();
        _scopedContentService.OnBrandNameChanged -= HandleBrandNameChanged;
        AIService.OnContentReceived -= UpdateContent;
        AIService.OnContentReceiveFinished -= UpdateFinished;
        AIService.OnStatusChangeReceived -= UpdateStatus;
        AIService.OnTextContentAvailable -= UpdateTextContentForVoice;
    }

    public async ValueTask DisposeAsync()
    {
        await CssTemplateService.DeleteSessionCssFile(sessionId);
    }


}