AlbumsViewController.swift

//
//  AlbumsViewController.swift
//  Project2 P2
//
//  Created by Noah Pilkington on 3/15/23.
//
import Nuke
import UIKit

class AlbumsViewController: UIViewController, UICollectionViewDataSource
{
    // Tells the collection view how many items to display
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int
    {
        // the number of items shown should be the number of albums we have.
        albums.count
    }
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell
    {
        // Get a collection view cell (based in the identifier you set in storyboard) and cast it to our custom AlbumCell
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "AlbumCell", for: indexPath) as! AlbumCell
        // Use the indexPath.item to index into the albums array to get the corresponding album
        let album = albums[indexPath.item] // CHECK
        // Get the artwork image url
        //let imageUrl = album.poster_path
        
        // Set the image on the image view of the cell
        //Nuke.loadImage(with: imageUrl, into: cell.albumImageView)
        
        let imageURL = URL(string:"https://image.tmdb.org/t/p/w500\(album.poster_path.absoluteString)")!
        Nuke.loadImage(with: imageURL, into: cell.albumImageView)
        return cell
    }
    
    
    @IBOutlet weak var collectionView: UICollectionView!

    
    var albums: [Album] = []

    override func viewDidLoad() {
        super.viewDidLoad()
        
        collectionView.dataSource = self
        
        // Network request
        let url = URL(string: "https://api.themoviedb.org/3/movie/now_playing?api_key=6c5a3b1cd6cf7316fd2e85091f58bff9")!
        let request = URLRequest(url: url)
        let task = URLSession.shared.dataTask(with: request) { [weak self] data, response, error in

            // Handle any errors
            if let error = error {
                print("❌ Network error: \(error.localizedDescription)")
            }
            // Make sure we have data
            guard let data = data else {
                print("❌ Data is nil")
                return
            }
            // Create a JSON Decoder
            let decoder = JSONDecoder()
            do {
                // Try to parse the response into our custom model
                let response = try decoder.decode(AlbumSearchResponse.self, from: data)
                let albums = response.results
//                DispatchQueue.main.async {
//                    self?.albums = albums
//                    self?.collectionView.reloadData()
//                }
        
                print(albums)
                self?.albums = albums
            } catch {
                print(error.localizedDescription)
            }
        }
        

        // Initiate the network request
        task.resume()

        // Do any additional setup after loading the view.
        
        // Get a reference to the collection view's layout
        // We want to dynamically size the cells for the available space and desired number of columns.
        // NOTE: This collection view scrolls vertically, but collection views can alternatively scroll horizontally.
        let layout = collectionView.collectionViewLayout as! UICollectionViewFlowLayout

        // The minimum spacing between adjacent cells (left / right, in vertical scrolling collection)
        // Set this to taste.
        layout.minimumInteritemSpacing = 4

        // The minimum spacing between adjacent cells (top / bottom, in vertical scrolling collection)
        // Set this to taste.
        layout.minimumLineSpacing = 4

        // Set this to however many columns you want to show in the collection.
        let numberOfColumns: CGFloat = 3

        // Calculate the width each cell need to be to fit the number of columns, taking into account the spacing between cells.
        let width = (collectionView.bounds.width - layout.minimumInteritemSpacing * (numberOfColumns - 1)) / numberOfColumns

        // Set the size that each tem/cell should display at
        layout.itemSize = CGSize(width: width, height: width)
    }
    
   
    /*
    // MARK: - Navigation

    // In a storyboard-based application, you will often want to do a little preparation before navigation
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // Get the new view controller using segue.destination.
        // Pass the selected object to the new view controller.
    }
    */

}