SmartContractLink.cs

using System.Collections.Specialized;
using System.Web;
using NeuroAccessMaui.Resources.Languages;
using NeuroAccessMaui.Services;
using Waher.Persistence;
using Waher.Runtime.Inventory;
 
namespace NeuroAccessMaui.Links
{
    public class SmartContractLink : ILinkOpener
    {
        public SmartContractLink()
        {
        }
 
        public Grade Supports(Uri Link)
        {
            return string.Compare(Link.Scheme, Constants.UriSchemes.IotSc, StringComparison.OrdinalIgnoreCase) == 0 ? Grade.Ok : Grade.NotAtAll;
        }
 
        public async Task<bool> TryOpenLink(Uri Link, bool ShowErrorIfUnable)
        {
            Dictionary<CaseInsensitiveString, object> Parameters = [];
            string s = Link.OriginalString.Replace("%40", "@"); // Android has problems with URIs containg @
 
            string? ContractId = Constants.UriSchemes.RemoveScheme(s) ?? string.Empty;
            if (ContractId is null)
                return false;
 
            int i = ContractId.IndexOf('?');
 
            if (i > 0)
            {
                NameValueCollection QueryParameters = HttpUtility.ParseQueryString(ContractId[i..]);
 
                foreach (string? Key in QueryParameters.AllKeys)
                {
                    if (Key is null)
                        continue;
 
                    string? Value = QueryParameters[Key];
                    if (Value is null)
                        continue;
 
                    Parameters[Key] = Value;
                }
 
                ContractId = ContractId[..i];
            }
 
            await ServiceRef.ContractOrchestratorService.OpenContract(ContractId,
                ServiceRef.Localizer[nameof(AppResources.ScannedQrCode)], Parameters);
 
            return true;
        }
    }
}