Mapping two kind of responses with Alamofire and AlamofireObjectMapper (iOS - swift) - ios

Question

So, I'm making an iOS app the search a movie on imdb database (using omdb api) and the user could save the favorites.
To search by imdbTitle the request url is "https://www.omdbapi.com/?s=(imdbTitle)&type=movie", if imdbTitle = "arq", for example, the response is:
{
Response = True;
Search = (
{
Poster = "https://images-na.ssl-images-amazon.com/images/M/MV5BMjAxODQ2MzkyMV5BMl5BanBnXkFtZTgwNjU3MTE5OTE#._V1_SX300.jpg";
Title = ARQ;
Type = movie;
Year = 2016;
imdbID = tt5640450;
},
{
Poster = "N/A";
Title = Arq;
Type = movie;
Year = 2011;
imdbID = tt2141601;
},
{
Poster = "N/A";
Title = "A.R.Q.";
Type = movie;
Year = 2015;
imdbID = tt3829612;
}
);
totalResults = 3;
}
But for save the movie I have to search by imdbID, url: "https://www.omdbapi.com/?i=(imdbID)", if imdbID is the one from the movie searched, imdbID = tt3829612, and the response is:
{
Actors = "Robbie Amell, Rachael Taylor, Shaun Benson, Gray Powell";
Awards = "N/A";
BoxOffice = "N/A";
Country = "USA, Canada";
DVD = "16 Sep 2016";
Director = "Tony Elliott";
Genre = "Sci-Fi, Thriller";
Language = English;
Metascore = "N/A";
Plot = "Trapped in a lab and stuck in a time loop, a disoriented couple fends off masked raiders while harboring a new energy source that could save humanity.";
Poster = "https://images-na.ssl-images-amazon.com/images/M/MV5BMjAxODQ2MzkyMV5BMl5BanBnXkFtZTgwNjU3MTE5OTE#._V1_SX300.jpg";
Production = Netflix;
Rated = "N/A";
Ratings = (
{
Source = "Internet Movie Database";
Value = "6.4/10";
},
{
Source = "Rotten Tomatoes";
Value = "60%";
}
);
Released = "16 Sep 2016";
Response = True;
Runtime = "88 min";
Title = ARQ;
Type = movie;
Website = "N/A";
Writer = "Tony Elliott";
Year = 2016;
imdbID = tt5640450;
imdbRating = "6.4";
imdbVotes = "17,481";
}
So, my Movie class has to have the following attributes: poster, title, runtime, genre, director, actors, plot, released, imdbID and imdbRating (to show this on my UI View, except the imdbID, of course)
I'm a beginner and I'm too confused by all those things (never worked with API data before).
Anyways, after a lot of search I found that there is a way to get this response as an Array using AlamofireObjectMapper.
I already have my request functions:
func searchMoviesOnJson(imdbTitle: String, completionHandler: #escaping (Dictionary<String, Any>?) -> ()) {
let urlByName: String = "https://www.omdbapi.com/?s=\(imdbTitle)&type=movie"
//returns a list of movies that contains the title searched
//------------------------------------------------
Alamofire.request(urlByName).responseJSON {
response in
switch response.result {
case .success(let value):
let moviesJSON = value
completionHandler(moviesJSON as? Dictionary<String, Any>)
case .failure(_):
completionHandler(nil)
}
}
//------------------------------------------------
}
func getMovieFromJson(imdbID: String, completionHandler: #escaping (Dictionary<String, String>) -> ()) {
let urlById: String = "https://www.omdbapi.com/?i=\(imdbID)"
//returns a single movie information
//------------------------------------------------
Alamofire.request(urlById).responseJSON {
response in
if let moviesJSON = response.result.value {
completionHandler(moviesJSON as! Dictionary<String, String>)
}
}
//------------------------------------------------
}
So, could anyone explain to me (like you'll explain to a child) how can I do this mapping? I created a Movie.swift and in this file I'll put my class Movie and class MovieDAO.
How can I implement this two classes using AlamofireObjectMapper and who I have to change in my request methods?
Update:
class Movie {
let poster: String?
let title: String?
let runtime: String?
let genre: String?
let director: String?
let actors: String?
let plot: String?
let released: String?
let imdbID: String?
let imdbRating: String?
init(poster: String?, title: String?, runtime: String?, genre: String?, director: String?, actors: String?, plot: String?, released: String?, imdbID: String?, imdbRating: String?) {
//checking if is nil
if let isPoster = poster {
self.poster = isPoster
} else {
self.poster = nil
}
if let isTitle = title {
self.title = isTitle
} else {
self.title = nil
}
if let isGenre = genre {
self.genre = isGenre
} else {
self.genre = nil
}
if let isRuntime = runtime {
self.runtime = isRuntime
} else {
self.runtime = nil
}
if let isDirector = director {
self.director = isDirector
} else {
self.director = nil
}
if let isActors = actors {
self.actors = isActors
} else {
self.actors = nil
}
if let isPlot = plot {
self.plot = isPlot
} else {
self.plot = nil
}
if let isReleased = released {
self.released = isReleased
} else {
self.released = nil
}
if let isImdbID = imdbID {
self.imdbID = isImdbID
} else {
self.imdbID = nil
}
if let isImdbRating = imdbRating {
self.imdbRating = isImdbRating
} else {
self.imdbRating = nil
}
}
}
UPDATE 2
I declare the variable movieDetail as you said to do, but the xcode showed an error and suggesting that I could add the parameters, so I did and its not solved.

Answer 1

You will have to parse the JSON received:
For e.g. if json received is:
{
Response = True;
Search = (
{
Poster = "https://images-na.ssl-images-amazon.com/images/M/MV5BMjAxODQ2MzkyMV5BMl5BanBnXkFtZTgwNjU3MTE5OTE#._V1_SX300.jpg";
Title = ARQ;
Type = movie;
Year = 2016;
imdbID = tt5640450;
},
{
Poster = "N/A";
Title = Arq;
Type = movie;
Year = 2011;
imdbID = tt2141601;
},
{
Poster = "N/A";
Title = "A.R.Q.";
Type = movie;
Year = 2015;
imdbID = tt3829612;
}
);
totalResults = 3;
}
As you have mentioned, if you have stored the json response in NSDictionary
You can access the values of Search results as
var moviesArray = [Movie]() //array of your Movie class
var imdbIdArray = [String]()
if let searchResults = moviesJSON["Search"] as? NSArray {
for searchResult in searchResults {
let movieResult = searchResult as! Dictionary<String,String>
let movieDetail = Movie()
movieDetail.title = movieResult["Title"]
movieDetail.type = movieResult["Type"]
//similarly you can do it for other params as well
moviesArray.append(movieDetail)
let imdbId = movieResult["imdbId"]
imdbIdArray.append(imdbId)
}
}
class Movie: NSObject {
var title = String()
var type = String()
}
Now moviesArray consist of list of movies returned in the result set.