﻿/*
    Copyright (C) 2014 Omega software d.o.o.

    This file is part of Rhetos.

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as
    published by the Free Software Foundation, either version 3 of the
    License, or (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

using Rhetos.Dsl;
using Rhetos.Dsl.DefaultConcepts;
using Rhetos.Extensibility;
using Rhetos.MvcModelGenerator;
using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.Linq;
using System.Text;

namespace Rhetos.MvcModelGenerator.DefaultConcepts
{
    [Export(typeof(ICaptionsValuePlugin))]
    public class CamelCaseCaption : ICaptionsValuePlugin
    {
        public double Order
        {
            get { return 0; }
        }

        public void UpdateCaption(IDslModel dslModel, IDictionary<string, string> captionsValue)
        {
            var captionsKeys = captionsValue.Keys.ToList();
            foreach (var captionKey in captionsKeys)
            {
                StringBuilder sb = new StringBuilder();
                string caption = captionsValue[captionKey];

                if (caption.All(c => char.IsUpper(c)))
                    continue;

                bool lastWasLetter = false;
                foreach (char c in caption)
                {
                    if (lastWasLetter && char.IsUpper(c))
                    {
                        sb.Append(' ');
                        sb.Append(char.ToLower(c));
                    }
                    else if (c == '_')
                    {
                        if (lastWasLetter)
                            sb.Append(' ');
                    }
                    else
                        sb.Append(c);

                    lastWasLetter = char.IsLetter(c);
                }

                captionsValue[captionKey] = sb.ToString();
            }
        }
    }
}
