/// <summary>
/// Extract placeholders from the given template.
/// </summary>
/// <param name="template">the template to parse.</param>
/// <returns>placeholders extracted from the template.</returns>
public static IList <AckEmailPlaceholder> GetPlaceholders(string template)
{
var regex = new Regex(_pattern);
var matches = regex.Matches(template);
var placeholders = new List <AckEmailPlaceholder>(matches.Count);
foreach (Match match in matches)
{
var text = match.Groups[0].Value;
var field = match.Groups[1].Value;
var defaultValue = match.Groups[3].Value;
var placeholder = new AckEmailPlaceholder(text, field, defaultValue);
placeholders.Add(placeholder);
}
return(placeholders);
}
/// <summary>
/// Produce text content by applying replacements on the template.
/// </summary>
/// <param name="workItemFields">work item for which the content is generated</param>
/// <param name="config">the instance config</param>
/// <returns>text content produced by applying replacements for placeholders</returns>
public string Apply(IWorkItemFields workItemFields, Config.InstanceConfig config)
{
var bodyBuilder = new StringBuilder(_text);
var placeholders = AckEmailPlaceholder.GetPlaceholders(_text);
var specialReplacements = GetSpecialReplacements(workItemFields, config);
foreach (var placeholder in placeholders)
{
var fieldNameUpper = placeholder.Field.ToUpper();
var fieldValue = specialReplacements.ContainsKey(fieldNameUpper)
? specialReplacements[fieldNameUpper]
: workItemFields.GetFieldValue(placeholder.Field);
var value = string.IsNullOrWhiteSpace(fieldValue) ? placeholder.DefaultValue : fieldValue;
Logger.DebugFormat("Replacing placeholder {0} with value '{1}'", placeholder.Text, value);
bodyBuilder.Replace(placeholder.Text, value);
}
return(bodyBuilder.ToString());
}
