CleanAuLait MVVM Framework

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namespace CleanAuLait.Core.Resource
{
    public class CaptionFormatter : ICaptionFormatter
    {
        public const string MSG_KEY_CAPTION = "Caption";

        public const string MSG_KEY_PREFIX_CAPTION_FORMAT = "Caption.Format.";

        public const string MSG_KEY_CAPTION_FORMAT_INFO = MSG_KEY_PREFIX_CAPTION_FORMAT + "Info";
        public const string MSG_KEY_CAPTION_FORMAT_WARN = MSG_KEY_PREFIX_CAPTION_FORMAT + "Warn";
        public const string MSG_KEY_CAPTION_FORMAT_ERROR = MSG_KEY_PREFIX_CAPTION_FORMAT + "Error";
        public const string MSG_KEY_CAPTION_FORMAT_CONFIRM = MSG_KEY_PREFIX_CAPTION_FORMAT + "Confirm";
        public const string MSG_KEY_CAPTION_FORMAT_EXCEPTION = MSG_KEY_PREFIX_CAPTION_FORMAT + "Exception";
        
        protected readonly IMessageRepository repo;

        public CaptionFormatter(IMessageRepository repo)
        {
            this.repo = repo;
        }

        public string GetDefaultCaption()
        {
            return GetCaption(MSG_KEY_CAPTION);
        }

        public string GetCaption(string captionKey)
        {
            return this.repo.Get(captionKey);
        }

        public string GetInfoCaption()
        {
            return FormatDefaultCaption(MSG_KEY_CAPTION_FORMAT_INFO);
        }

        public string FormatInfoCaption(string captionKey)
        {
            return FormatCaption(MSG_KEY_CAPTION_FORMAT_INFO, captionKey);
        }

        public string GetWarnCaption()
        {
            return FormatDefaultCaption(MSG_KEY_CAPTION_FORMAT_WARN);
        }

        public string FormatWarnCaption(string captionKey)
        {
            return FormatCaption(MSG_KEY_CAPTION_FORMAT_WARN, captionKey);
        }

        public string GetErrorCaption()
        {
            return FormatDefaultCaption(MSG_KEY_CAPTION_FORMAT_ERROR);
        }

        public string FormatErrorCaption(string captionKey)
        {
            return FormatCaption(MSG_KEY_CAPTION_FORMAT_ERROR, captionKey);
        }

        public string GetConfirmCaption()
        {
            return FormatDefaultCaption(MSG_KEY_CAPTION_FORMAT_ERROR);
        }

        public string FormatConfirmCaption(string captionKey)
        {
            return FormatCaption(MSG_KEY_CAPTION_FORMAT_CONFIRM, captionKey);
        }

        public string GetExceptionCaption(Exception e)
        {
            return FormatExceptionCaption(e, null);
        }

        public string FormatExceptionCaption(Exception e, string captionKey)
        {
            string caption;

            if (string.IsNullOrEmpty(captionKey))
            {
                caption = GetDefaultCaption();
            }
            else
            {
                caption = GetCaption(captionKey);
            }

            string format = GetCaption(MSG_KEY_CAPTION_FORMAT_EXCEPTION);

            return string.Format(format, caption, e.GetType().Name);
        }

        protected string FormatDefaultCaption(string captionFormatKey)
        {
            return FormatCaption(captionFormatKey, null);
        }

        protected string FormatCaption(string captionFormatKey, string captionKey)
        {
            string caption;

            if (string.IsNullOrEmpty(captionKey))
            {
                caption = GetDefaultCaption();
            }
            else
            {
                caption = GetCaption(captionKey);
            }

            string format = GetCaption(captionFormatKey);

            return string.Format(format, caption);
        }

    }
}