@page "/fetchdata/{Service}/{CreatorId}"

@using Microsoft.AspNetCore.Components.Rendering;
@using Sve.Blazor.InfiniteScroll.Components
@using VeloeKemonoPartyApp.Data
@using VeloeKemonoPartyApp.Services;
@inject WeatherForecastService ForecastService
@inject KemonoHttpClient HttpClient 
@inject IJSRuntime JSRuntime

<div id="image-menu" onclick="@(()=>CloseOverlay())"
    style="
    opacity: 1;
    background-color:#ccc;
    position:fixed;
    width:100%;
    height:100%;
    top:0px;
    left:0px;
    justify-content:center;
    pointer-events:none;
    display:@OverlayVisibility;
    z-index:900;">
    <div style="pointer-events:all;">
        <div  style="position:fixed; top:0px; left:0px;opacity:1; background-color:red; align-items:center; height:@(Application.Current.MainPage.Height - 80)px; text-align: center;">

            <div id="panzoom_block" style="position: absolute;top: 50%;transform: translateY(-50%);height:@(Application.Current.MainPage.Height - 80)px;width:@(Application.Current.MainPage.Width)px;">
            <Panzoom @ref="_panzoom">
                <img id="panzoom" @ref="@context.ElementReference" alt="image" src="@ImageContextMenuLink" style="max-height:@(Application.Current.MainPage.Height - 80)px;max-width:@(Application.Current.MainPage.Width)px; display:block; margin-top:auto; margin-bottom:auto" />
            </Panzoom>
        </div>
        
        
        </div>
        <div style="position:fixed; bottom:10px; left:10px;">
            <h3>@ImageContextMenuName</h3>
            <button id="reload-image-button" style="z-index:1000;" @onclick=@(() => JSRuntime.InvokeVoidAsync("SwitchPic",ImageContextMenuId,ImageContextMenuLink))>Reload image</button>
        </div>
    </div>
    
    
</div>

<p>@Message</p>
    <InfiniteScroll ObserverTargetId="observerTarget" ObservableTargetReached="(e) => GetPosts()" >
	    <div>
    		@foreach (var post in posts)
            {
                <div>
                    <h2>@post.Title</h2>
                @{
                    int i = 0;
                    foreach (var images in post.Attachments)
                    {
                        /*
                        string toImage = System.IO.Path.Combine(FileSystem.CacheDirectory, System.IO.Path.GetFileName(new Uri(images.Path).LocalPath));
                        string toFolder = FileSystem.CacheDirectory;

                        for (int tries = 0; tries < 5; tries++)
                        {
                            try
                            {
                                if (!System.IO.File.Exists(toImage))
                                {
                                    Task.Run(() =>
                                    {
                                        using (var s = new HttpClient().GetStreamAsync(images.Link).GetAwaiter().GetResult())
                                        {
                                            if (!Directory.Exists(toFolder))
                                                Directory.CreateDirectory(toFolder);

                                            using (var fs = new FileStream(toImage, FileMode.CreateNew))
                                            {
                                                s.CopyToAsync(fs).GetAwaiter();
                                                
                                            }
                                        }
                                    }).GetAwaiter();
                                    
                                }

                                toImage = Convert.ToBase64String(System.IO.File.ReadAllBytes(toImage));
                                    //DependencyService.Get<KemonoHttpClient>().GetImageAsync($"https://kemono.party/data{images.Path}", toFolder, toImage).GetAwaiter();
                                break;
                            }
                            catch (Exception ex)
                            {
                                if (tries == 4)
                                    toImage = "logo_vivelapub.png";
                                //await Task.Delay(500);
                            }
                        }

                        */
                        if (System.IO.Path.GetExtension(images.Path) is (".png" or ".jpg" or ".jpeg" or ".gif")){
                        //if (System.IO.Path.GetExtension(toImage) is (".png" or ".jpg" or ".jpeg" or ".gif")){
                        
                        string link = images.Link;
                        string imageId = $"{images.Path}_{i}";
                            <img 
                                id="@imageId" 
                                src="@link" 
                                onerror="@(
                                    ()=>{
                                    Task.Delay(1000).GetAwaiter();
                                    JSRuntime.InvokeVoidAsync("SwitchPic",imageId,link);
                                    }
                                )"
                                @onclick=@(()=>Task.Run(()=>OpenOverlay(imageId,link,images.Name))) style="margin-bottom:10px; width:@(Application.Current.MainPage.Width - 50)px; height:contain;" />
                        }
                        //else
                        //{
                        //    string link = "data:image/png;base64," + toImage;
                        //string imageId = $"{images.Path}_{i}";
                        //    <img id="@imageId" src="@link"  @onclick=@(()=>OpenOverlay(imageId,link,images.Name)) style="margin-bottom:10px; width:@(Application.Current.MainPage.Width - 50)px; height:contain;" />
                        //}
                    }
                }
                    
                    @if(post.Content.Contains("<a>"))
                    {
                        post.Content.Replace("<a>","<a style:\"word-break:break-all;\">");
                    }
                    <div style="word-break:break-word;">@((MarkupString)post.Content)</div>
                    @foreach (var attachment in post.Attachments)
                    {
                        string link = "https://kemono.party" + attachment.Path;
                    <p onclick="@(async () => await OpenLink(link))" style="color:dodgerblue; word-break:break-all;" >@attachment.Name</p>
                    }
                    <p >@post.Published</p>
                </div>
            }
		    

        	
        	<p class="list-group-item" id="observerTarget">End</p>
    	</div>
        
    </InfiniteScroll>    
   
@code {

    [Parameter]
    public string CreatorId { get; set; }

    [Parameter]
    public string Service { get; set; }

    string OverlayVisibility { get; set; }
    string ImageContextMenuName { get; set; }
    string ImageContextMenuId { get; set; }
    string ImageContextMenuLink { get; set; }

    string Message { get; set; }

    private WeatherForecast[] forecasts;

    private List<Post> postsCache = new List<Post>();
    private List<Post> posts = new List<Post>();
    private int loadedPos = 0;

    private Panzoom _panzoom;

    protected override async Task OnInitializedAsync()
    {

        //await GetPosts();
        OverlayVisibility = "none";
    }

    private async Task GetPosts()
    { // Just to make it async
        int i = 0;
        do
        {
            try
            {
                if (postsCache.Count == posts.Count)
                {
                    var postsNew = await HttpClient.GetPostsList(CreatorId, Service, loadedPos);

                    postsCache.AddRange(postsNew);
                }
                posts.AddRange(postsCache.Skip(posts.Count).Take(1));
                //loadedPos += postsNew.Count;
                loadedPos += 1;

                return;
            }
            catch (Exception ex)
            {
                await Task.Delay(1000);
            }
            i++;
        }
        while (i<5);

        Message = "LoadFailed";
    }

    private async Task OpenLink(string link)
    {
        await Browser.Default.OpenAsync(link);
    }

    void CloseOverlay()
    {
        OverlayVisibility = "none";
    }

    async void OpenOverlay(string id, string link, string name)
    {
        JSRuntime.InvokeVoidAsync("SetOverlayImage", id);
        ImageContextMenuName = name;
        ImageContextMenuLink = link;
        ImageContextMenuId = id;
        OverlayVisibility = "block";
        await _panzoom.ResetAsync();
        await JSRuntime.InvokeVoidAsync("SetPanzoom");
        JSRuntime.InvokeVoidAsync("PanzoomCenter");
        ShouldRender();
    }

}