LocalizationStep.cs

using System.Threading.Tasks;
using Waher.Persistence.Attributes;
using Waher.Runtime.Language;
 
namespace Waher.Things.SensorData
{
    [TypeName(TypeNameSerialization.None)]
    public class LocalizationStep
    {
        private int stringId;
        private string module;
        private string seed;
 
        public LocalizationStep()
        {
            this.stringId = 0;
            this.module = null;
            this.seed = null;
        }
 
        public LocalizationStep(int StringId)
        {
            this.stringId = StringId;
            this.module = null;
            this.seed = null;
        }
 
        public LocalizationStep(int StringId, string Module)
        {
            this.stringId = StringId;
            this.module = Module;
            this.seed = null;
        }
 
        public LocalizationStep(int StringId, string Module, string Seed)
        {
            this.stringId = StringId;
            this.module = Module;
            this.seed = Seed;
        }
 
        [ShortName("i")]
        public int StringId
        {
            get => this.stringId;
            set => this.stringId = value;
        }
 
        [DefaultValueNull]
        [ShortName("m")]
        public string Module
        {
            get => this.module;
            set => this.module = value;
        }
 
        [DefaultValueNull]
        [ShortName("s")]
        public string Seed
        {
            get => this.seed;
            set => this.seed = value;
        }
 
        public static async Task<string> TryGetLocalization(Language Language, Namespace BaseModule, params LocalizationStep[] Steps)
        {
            if (Steps is null || Steps.Length == 0)
                return null;
 
            string Result = Steps[0].seed ?? string.Empty;
 
            Namespace Namespace;
 
            foreach (LocalizationStep Step in Steps)
            {
                if (!string.IsNullOrEmpty(Step.module))
                    Namespace = await Language.GetNamespaceAsync(Step.module);
                else
                    Namespace = BaseModule;
 
                if (Namespace is null)
                    return null;
 
                LanguageString String = await BaseModule.GetStringAsync(Step.stringId);
                if (String is null)
                    return null;
 
                Result = String.Value.Replace("%0%", Result);
 
                if (!string.IsNullOrEmpty(Step.seed))
                    Result = Result.Replace("%1%", Step.seed);
            }
 
            return Result;
        }
    }
}