/// <summary>
/// ActionResult for the index view.
/// </summary>
/// <param name="sortOrder">send what you want to sort by, "SortMessage" or "SortDate".
/// It will toggle between Descending and Ascending if you press link.</param>
/// <param name="searchString">Send the Message that you want to search for.</param>
/// <returns>Returns a view with the choosen data.</returns>
public async Task <ActionResult> Index(string sortOrder, string searchString)
{
/*Load all the notes from database to an IQuerable collection
* so we can do querys and return a temporary list to the view.*/
var notes = from n in db.Notes select n;
var notesToSend = new List <Note>();
#region GetMaxTemps
foreach (var item in notes)//For every item in Notes we Gets and set the max temp for that day.
{
item.MaxTemp = await weather.GetMaxTemp(item.Date);
}
#endregion
#region SearchNotes
//If the searchString isn't null we search for message containing that text.
if (!String.IsNullOrEmpty(searchString))
{
var arrayWithSearchWords = new string[Regex.Split(searchString, "[^a-zA-Z0-9]").Length];
arrayWithSearchWords = Regex.Split(searchString.ToLower(), "[^a-zA-Z0-9]");
foreach (var item in notes)
{
var allWordsInMessage = new string[Regex.Split(item.Message, "[^a-zA-Z0-9]").Length];
allWordsInMessage = Regex.Split(item.Message.ToLower(), "[^a-zA-Z0-9]");
/*Using an Linq method "Intersect" with which you can compare 2 arrays.
* the new array will consist of the words that they have common. And
* then i check if the length is the same as the array with SearchWords.
* If it's true we have find a message with the same words as we have searched
* for in the view.*/
var both = allWordsInMessage.Intersect(arrayWithSearchWords);
if (both.Count() == arrayWithSearchWords.Length)
{
notesToSend.Add(item);
}
}
notes = notesToSend.AsQueryable();
}
#endregion
#region SortNotes
//Toggle message sort by descending and ascending.
ViewBag.SortMessage = sortOrder == "Message_Descending" ? "Message_Ascending" : "Message_Descending";
//Toggle date sort by descending and ascending.
ViewBag.SortDate = sortOrder == "Date_Descending" ? "Date_Ascending" : "Date_Descending";
/*Switching the choosen sortOrder and sort the temporary list by the case result
* and then return it to the view.*/
switch (sortOrder)
{
case "Message_Ascending":
{
notes = notes.OrderBy(n => n.Message);
break;
}
case "Message_Descending":
{
notes = notes.OrderByDescending(n => n.Message);
break;
}
case "Date_Descending":
{
notes = notes.OrderByDescending(n => n.Date);
break;
}
default:
{
notes = notes.OrderBy(n => n.Date); //order by date ascending default.
break;
}
}
#endregion
return(View(notes.ToList()));
}