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Ombi/Old/Ombi.Core/Notification/NotificationMessageResolver.cs

173 lines
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#region Copyright
// /************************************************************************
// Copyright (c) 2016 Jamie Rees
// File: CustomNotificationService.cs
// Created By: Jamie Rees
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// ************************************************************************/
#endregion
using System;
using System.Collections.Generic;
using System.Linq;
using Ombi.Core.Models;
using Ombi.Core.SettingModels;
namespace Ombi.Core.Notification
{
public class NotificationMessageResolver
{
/// <summary>
/// The start character '{'
/// </summary>
private const char StartChar = (char)123;
/// <summary>
/// The end character '}'
/// </summary>
private const char EndChar = (char)125;
/// <summary>
/// Parses the message.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="notification">The notification.</param>
/// <param name="type">The type.</param>
/// <param name="c">The c.</param>
/// <param name="transportType">Type of the transport.</param>
/// <returns></returns>
public NotificationMessageContent ParseMessage(NotificationSettingsV2 notification, NotificationType type, NotificationMessageCurlys c, TransportType transportType)
{
IEnumerable<NotificationMessage> content = null;
switch (transportType)
{
case TransportType.Email:
content = notification.EmailNotification;
break;
case TransportType.Pushbullet:
content = notification.PushbulletNotification;
break;
case TransportType.Pushover:
content = notification.PushoverNotification;
break;
case TransportType.Slack:
content = notification.SlackNotification;
break;
default:
throw new ArgumentOutOfRangeException(nameof(transportType), transportType, null);
}
if (content == null)
{
return new NotificationMessageContent();
}
var message = content.FirstOrDefault(x => x.NotificationType == type) ?? new NotificationMessage();
return Resolve(message.Body, message.Subject, c.Curlys);
}
/// <summary>
/// Resolves the specified message curly fields.
/// </summary>
/// <param name="body">The body.</param>
/// <param name="subject">The subject.</param>
/// <param name="parameters">The parameters.</param>
/// <returns></returns>
private NotificationMessageContent Resolve(string body, string subject, IReadOnlyDictionary<string, string> parameters)
{
// Find the fields
var bodyFields = FindCurlyFields(body);
var subjectFields = FindCurlyFields(subject);
body = ReplaceFields(bodyFields, parameters, body);
subject = ReplaceFields(subjectFields, parameters, subject);
return new NotificationMessageContent {Body = body ?? string.Empty, Subject = subject ?? string.Empty};
}
/// <summary>
/// Finds the curly fields.
/// </summary>
/// <param name="message">The message.</param>
/// <returns></returns>
private IEnumerable<string> FindCurlyFields(string message)
{
if (string.IsNullOrEmpty(message))
{
return new List<string>();
}
var insideCurly = false;
var fields = new List<string>();
var currentWord = string.Empty;
var chars = message.ToCharArray();
foreach (var c in chars)
{
if (char.IsWhiteSpace(c))
{
currentWord = string.Empty;
continue;
}
if (c == StartChar) // Start of curly '{'
{
insideCurly = true;
continue;
}
if (c == EndChar) // End of curly '}'
{
fields.Add(currentWord); // We have finished the curly, add the word into the list
currentWord = string.Empty;
insideCurly = false;
continue;
}
if (insideCurly)
{
currentWord += c.ToString(); // Add the character onto the word.
}
}
return fields;
}
/// <summary>
/// Replaces the fields.
/// </summary>
/// <param name="fields">The fields.</param>
/// <param name="parameters">The parameters.</param>
/// <param name="mainText">The main text.</param>
/// <returns></returns>
private string ReplaceFields(IEnumerable<string> fields, IReadOnlyDictionary<string, string> parameters, string mainText)
{
foreach (var field in fields)
{
string outString;
if (parameters.TryGetValue(field, out outString))
{
mainText = mainText.Replace($"{{{field}}}", outString);
}
}
return mainText;
}
}
}