Insert#

using System;
using UnityEngine;
using VisualScript.Icons;

namespace VisualScript.Runtime
{
    [Get]

    [Title("Insert")]
    [Category("Operations/Composing/Insert")]

    [Description("Inserts a text inside another one at the specified character index")]
    [Image(typeof(IconString), ColorTheme.Type.Yellow, typeof(BadgeIndex))]

    [Parameter("Text", "The text that receives the insertion")]
    [Parameter("Insert", "The text that is inserted")]
    [Parameter("Index", "The character index where the insertion starts. Clamped to the text length")]

    [Keywords("Add", "Splice", "Between", "Middle", "Text")]

    [Serializable]
    public class TypeStringInsert : TypeString
    {
        [SerializeField] private GetString m_Text = new GetString();
        [SerializeField] private GetString m_Insert = new GetString();
        [SerializeField] private GetInteger m_Index = new GetInteger(0);

        public override string GetPreview(GameObject source) => Insert(
            this.m_Text.GetPreview(source),
            this.m_Insert.GetPreview(source),
            (int) this.m_Index.GetPreview(source)
        );

        public override string Get(Args args) => Insert(
            this.m_Text.Get(args),
            this.m_Insert.Get(args),
            this.m_Index.GetInt(args)
        );

        private static string Insert(string text, string insert, int index)
        {
            text ??= string.Empty;
            if (string.IsNullOrEmpty(insert)) return text;

            return text.Insert(Mathf.Clamp(index, 0, text.Length), insert);
        }

        public override string ToString()
        {
            return $"Insert {this.m_Insert} in {this.m_Text}";
        }

        protected override SubscriptionMode Subscription => SubscriptionMode.OnChange;
    }
}