//
//  PlayerNotableFinishes.swift
//  TournamentStats
//
//  Created by Laurent Morvillier on 28/08/2019.
//  Copyright © 2019 Stax River. All rights reserved.
//

import Foundation
import UIKit

struct PlayerNotableFinishes {
    
    var player: Player
    var wins: [Result] = []
    var runnerUps: [Result] = []
    var finalTables: [Result] = []
    
}

class PlayerNotableFinishesDataSource : NSObject, UICollectionViewDataSource, UICollectionViewDelegate, UICollectionViewDelegateFlowLayout {
    
    let notableFinishes: [PlayerNotableFinishes]
    let mostWins: [Player]
    let mostWinsCount: Int
    let mostRunnerUps: [Player]
    let mostRunnerUpsCount: Int
    let mostFinalTables: [Player]
    let mostFinalTablesCount: Int
    
    init(notableFinishes: [PlayerNotableFinishes]) {
        self.notableFinishes = notableFinishes
        
        ///////
        var nWins = notableFinishes
        nWins.sort { (p1, p2) -> Bool in
            return p1.wins.count > p2.wins.count
        }
        let winsTopCount = nWins.first?.wins.count ?? 0
        self.mostWins = nWins.filter { $0.wins.count == winsTopCount}.map { $0.player }
        
        ///////
        var nRunnerups = notableFinishes
        nRunnerups.sort { (p1, p2) -> Bool in
            return p1.runnerUps.count > p2.runnerUps.count
        }
        let runnerUpsTopCount = nRunnerups.first?.runnerUps.count ?? 0
        self.mostRunnerUps = nRunnerups.filter { $0.runnerUps.count == runnerUpsTopCount}.map { $0.player }
        
        ///////
        var nFinalTables = notableFinishes
        nFinalTables.sort { (p1, p2) -> Bool in
            return p1.finalTables.count > p2.finalTables.count
        }
        let finalTablesTopCount = nFinalTables.first?.finalTables.count ?? 0
        self.mostFinalTables = nFinalTables.filter { $0.finalTables.count == finalTablesTopCount}.map { $0.player }
        
        self.mostWinsCount = winsTopCount
        self.mostRunnerUpsCount = runnerUpsTopCount
        self.mostFinalTablesCount = finalTablesTopCount
        
    }
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return 3
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Stat", for: indexPath) as! StatCollectionViewCell
        
        let name: String
        let value: String
        switch indexPath.row {
        case 0:
            name = "Most Wins"
            value = self.mostWins.map { $0.formattedName }.joined(separator: ", ") + " (\(self.mostWinsCount))"
        case 1:
            name = "Most Runner-up"
            value = self.mostRunnerUps.map { $0.formattedName }.joined(separator: ", ") + " (\(self.mostRunnerUpsCount))"
        case 2:
            name = "Most final tables"
            value = self.mostFinalTables.map { $0.formattedName }.joined(separator: ", ") + " (\(self.mostFinalTablesCount))"
        default:
            name = ""
            value = ""
        }
        
        cell.nameLabel.text = name.uppercased()
        cell.valueLabel.text = value
        
        cell.nameLabel.textColor = UIColor.white
        cell.valueLabel.textColor = UIColor.white
        
        cell.nameLabel.font = Fonts.regular
        cell.valueLabel.font = Fonts.bigNumbers
        
        return cell
    }
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        return CGSize(width: 800.0, height: 90.0)
    }
    
}