@inherits OwningComponentBase
@inject UserService UserService
@inject MediaService MediaService
@inject IMessageService MessageService

<InputFile id="@("AvatarUpload")" OnChange="(e) => UploadAvatar(e)" hidden accept=".jpg,jpeg,.png" />

<label for="AvatarUpload" style="cursor: pointer;">
    @if (String.IsNullOrWhiteSpace(AvatarUrl))
    {
        <div class="ant-upload ant-upload-select-picture-card ant-upload-select">
            <span class="ant-upload" tabindex="0" style="display: grid;">
                <div>
                    <Icon Type="@IconType.Outline.Plus" />
                    <div class="ant-upload-text">Upload</div>
                </div>
            </span>
        </div>
    }
    else
    {
        <Image Width="@Width" Src="@AvatarUrl" Preview="false" />
    }
</label>

@code {
    [Parameter] public Guid UserId { get; set; }
    [Parameter] public string Width { get; set; } = "104px";

    Settings Settings = SettingService.GetSettings();

    string AvatarUrl;

    User User = new User();
    ICollection<Media> Media = new List<Media>();

    string[] ValidMimeTypes = new string[]
    {
        "image/png",
        "image/jpeg"
    };

    protected override async Task OnParametersSetAsync()
    {
        await LoadUser();
    }

    protected async Task LoadUser()
    {
        User = await UserService.Include(u => u.Media!).GetAsync(UserId);

        await LoadAvatar();
    }

    async Task LoadAvatar()
    {
        var avatar = await MediaService.FirstOrDefaultAsync(m => m.Type == SDK.Enums.MediaType.Avatar && m.UserId == UserId);

        if (avatar != null)
            AvatarUrl = $"/api/Media/{avatar.Id}/Download?fileId={avatar.FileId}";
        else
            AvatarUrl = String.Empty;
    }

    async Task UploadAvatar(InputFileChangeEventArgs e)
    {
        var media = User.Media?.FirstOrDefault(m => m.Type == SDK.Enums.MediaType.Avatar);

        if (media == null)
            media = new Media
            {
                Type = SDK.Enums.MediaType.Avatar,
                UserId = User.Id
            };

        if (!ValidMimeTypes.Contains(e.File.ContentType))
        {
            MessageService.Error("Unsupported file type");
            return;
        }

        if ((e.File.Size / 1024) > 512)
        {
            MessageService.Error($"File size must be smaller than 512KB");
            return;
        }

        media.SourceUrl = "";
        media.MimeType = e.File.ContentType;
        
        if (media.Id == Guid.Empty)
        {
            media = await MediaService.WriteToFileAsync(media, e.File.OpenReadStream(maxAllowedSize: Settings.Media.MaxSize * 1024 * 1024));
        }
        else if (media.Id != Guid.Empty)
        {
            MediaService.DeleteLocalMediaFile(media);
            
            media = await MediaService.WriteToFileAsync(media, e.File.OpenReadStream(maxAllowedSize: Settings.Media.MaxSize * 1024 * 1024));
            
            await MediaService.UpdateAsync(media);
        }

    }

    async Task OnAvatarUploaded()
    {
        // reload full user in order to get related media
        await LoadUser();
    }
}