Schafkopf-Server/Sources/App/Model/Game.swift

import Foundation

typealias Hand = [Card]

/// The number of tricks ("Stich") per game
let tricksPerGame = 8

struct Game: Codable {
    
    let type: GameType
    
    let numberOfDoubles: Int
    
    /// The player(s) leading the game, i.e. they lose on 60-60
    let leaders: [Int]
    
    /// The remaining cards for all players
    var cards: [Hand]
    
    /// The total number of consecutive trump cards for one party (starts counting at 3)
    let consecutiveTrumps: Int
    
    var lastTrickWinner: Int
    
    var currentActor: Int
    
    /// The finished tricks, with each trick sorted according to the player order of the table
    var completedTricks: [Trick]
    
    init(type: GameType, doubles: Int, cards: [Hand], leaders: [Int], starter: Int) {
        self.type = type
        self.numberOfDoubles = doubles
        self.cards = cards
        self.leaders = leaders
        self.consecutiveTrumps = Array(leaders.map { cards[$0] }.joined())
            .consecutiveTrumps(for: type)
        self.currentActor = starter
        self.lastTrickWinner = starter
        self.completedTricks = []
    }
    
    var isAtEnd: Bool {
        completedTricks.count == tricksPerGame
    }
    
    var hasNotStarted: Bool {
        !cards.contains { !$0.isEmpty }
    }
    
    var pointsOfLeaders: Int {
        leaders.map(pointsOfPlayer).reduce(0, +)
    }
    
    func pointsOfPlayer(index: Int) -> Int {
        completedTricks
            .filter { $0.winnerIndex(forGameType: type) == index }
            .map { $0.points }
            .reduce(0, +)
    }
    
    /// The cost of the game, in cents
    var cost: Int {
        // TODO: Add läufer and schwarz, schneider
        type.basicCost * costMultiplier
    }
    
    var costMultiplier: Int {
        2 ^^ numberOfDoubles
    }
}