/// <summary>
/// I may move this to a utility that strictly maps movies versus this generic "fuzzy" logic.
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public override bool Equals(object obj)
{
bool result = false;
bool contains = false;
var compareTo = obj as IMovie;
if (compareTo != null)
{
if (Id != 0 && Id == compareTo.Id)
{
result = true;
}
else if (Identifier != null && compareTo.Identifier != null)
{
// The Identifier will trump all other equalities if they are set.
result = Identifier == compareTo.Identifier;
if (result && Day.HasValue && compareTo.Day.HasValue)
{
// If both days have values then they HAVE TO MATCH.
result = Day.Value == compareTo.Day.Value;
}
}
else
{
// Make all the tests case insensitive.
var movieName = MovieName.ToLower().Replace(" ", string.Empty);
var testMovieName = compareTo.MovieName.ToLower().Replace(" ", string.Empty);
result = movieName.Equals(testMovieName);
if (!result)
{
// Not an exact match so try starts with (limited contains)
result = movieName.StartsWith(testMovieName) || testMovieName.StartsWith(movieName);
contains = result;
}
if (!result)
{
// Not an exact match so try ends with (limited contains)
result = movieName.EndsWith(testMovieName) || testMovieName.EndsWith(movieName);
contains = result;
}
if (!result)
{
// Not an exact match so try "contains"
result = movieName.IndexOf(testMovieName) > 1 || testMovieName.IndexOf(movieName) > 1;
contains = result;
}
if (result)
{
// Fail if there is a lot of noise.
if (movieName.Length > testMovieName.Length * 2 || testMovieName.Length > movieName.Length * 2)
{
// Try to remove some of the noise.
var thisYear = $" {DateTime.Now.Year}";
movieName = movieName.Replace(thisYear, string.Empty);
testMovieName = testMovieName.Replace(thisYear, string.Empty);
if (movieName.Length > testMovieName.Length * 2 || testMovieName.Length > movieName.Length * 2)
{
result = false;
}
if (contains)
{
var tokens1 = MovieName.Split();
var tokens2 = compareTo.MovieName.Split();
var index = 0;
if (tokens1.Length == 1 || tokens2.Length == 1)
{
// If either are a single word then the first words need to match exactly. This may need to progress to other words.
result = tokens1[0].ToLower().Equals(tokens2[0].ToLower());
}
// Basically just "starts with".
else if (tokens1.Length >= tokens2.Length)
{
result = true;
foreach (var token in tokens2)
{
if (token.ToLower() != tokens1[index++].ToLower())
{
result = false;
break;
}
}
}
else if (tokens2.Length > tokens1.Length)
{
result = true;
foreach (var token in tokens1)
{
if (token.ToLower() != tokens2[index++].ToLower())
{
result = false;
break;
}
}
}
}
}
}
if (!result)
{
// Try to compare the names without the word "the"
result = movieName.Replace("the ", string.Empty).Replace(" the", string.Empty).Equals(testMovieName.Replace("the ", string.Empty).Replace(" the", string.Empty));
}
if (result && Day.HasValue && compareTo.Day.HasValue)
{
// If both days have values then they HAVE TO MATCH.
result = Day.Value == compareTo.Day.Value;
}
}
}
return(result);
}
