import Foundation
import WebSocketKit
import CloudKit

private let encoder = JSONEncoder()

final class Player {
    
    let name: PlayerName
    
    /// The player is the first to play a card in a new game
    var playsFirstCard = false
    
    /// The player is the next to perform an action (e.g. play a card)
    var isNextActor = false
    
    /// The player must select the game to play after winning the auction
    var selectsGame = false
    
    /// The players plays/played the first card for the current trick
    var startedCurrentTrick = false
    
    /// The action available to the player
    var actions: [Action] = []
    
    /// Indicates if the player doubled ("legen")
    var didDoubleAfterFourCards: Bool? = nil
    
    /// Indicates if the player is still involved in the bidding process
    var isStillBidding = true
    
    /// Indicates that the player leads the game ("Spieler")
    var isGameLeader = false
    
    /// Indicates the number of raises ("Schuss") of the player
    var numberOfRaises = 0
    
    /// The remaining cards of the player
    var handCards: [PlayableCard] = []
    
    /// The card played for the current trick
    var playedCard: Card? = nil
    
    /// All tricks won by the player in this game
    var wonTricks: [Trick] = []
    
    var socket: WebSocket? = nil
    
    init(name: PlayerName) {
        self.name = name
    }
    
    var rawCards: [Card] {
        handCards.map { $0.card }
    }
    
    func connect(using socket: WebSocket) {
        _ = self.socket?.close()
        self.socket = socket
    }
    
    func send(_ info: TableInfo) {
        try? socket?.send(encodeJSON(info))
    }
    
    func disconnect() -> Bool {
        guard let socket = socket else {
            return false
        }
        do {
            try socket.close().wait()
        } catch {
            print("Failed to close socket for player: \(name): \(error)")
        }
        self.socket = nil
        return true
    }
    
    func prepareForFirstGame(isFirstPlayer: Bool) {
        playsFirstCard = isFirstPlayer
        isNextActor = isFirstPlayer
        selectsGame = false // Not relevant in this phase
        startedCurrentTrick = isFirstPlayer
        actions = [.deal]
        didDoubleAfterFourCards = nil // Not relevant in this phase
        isStillBidding = false // Not relevant in this phase
        isGameLeader = false // Not relevant in this phase
        numberOfRaises = 0 // Not relevant in this phase
        handCards = []
        playedCard = nil
        wonTricks = []
    }
    
    func assignFirstCards(_ cards: Hand) {
        selectsGame = false // Not relevant in this phase
        actions = [.initialDoubleCost, .noDoubleCost]
        didDoubleAfterFourCards = nil
        isStillBidding = false // Not relevant in this phase
        isGameLeader = false // Not relevant in this phase
        numberOfRaises = 0 // Not relevant in this phase
        handCards = cards.map { .init(card: $0, isPlayable: false) }
        playedCard = nil
        wonTricks = []
    }
    
    func didDouble(_ double: Bool) {
        selectsGame = false // Not relevant in this phase
        actions = []
        didDoubleAfterFourCards = double
        isStillBidding = false // Not relevant in this phase
        isGameLeader = false // Not relevant in this phase
        numberOfRaises = 0 // Not relevant in this phase
        playedCard = nil
        wonTricks = []
    }
    
    func assignRemainingCards(_ cards: Hand) {
        isStillBidding = true
        isGameLeader = false
        numberOfRaises = 0
        handCards = (rawCards + cards)
            .sorted(CardOrderType: .normal)
            .map { .init(card: $0, isPlayable: false) }
        playedCard = nil
        wonTricks = []
    }
    
    func startAuction() {
        selectsGame = false // Not relevant in this phase
        if playsFirstCard {
            actions = [.withdrawFromAuction, .increaseOrMatchGame]
        } else {
            
        }
        actions = []
        isStillBidding = true
        isGameLeader = false // Not relevant in this phase
        numberOfRaises = 0 // Not relevant in this phase
        playedCard = nil
        wonTricks = []
    }
    
    func info(masked: Bool) -> PlayerInfo {
        .init(player: self, isMasked: masked)
    }
}

extension Player {
    
    /// Indicate that the player is connected when at a table
    var isConnected: Bool {
        guard let socket = socket else {
            return false
        }
        guard !socket.isClosed else {
            self.socket = nil
            return false
        }
        return true
    }
}

extension Player {
    
    enum Action: String, Codable {
        /// The player can request cards to be dealt
        case deal = "deal"
        
        /// The player doubles on the initial four cards
        case initialDoubleCost = "double"
        
        /// The player does not double on the initial four cards
        case noDoubleCost = "skip"
        
        /// The player offers a wedding (one trump card)
        case offerWedding = "wedding"
        
        /// The player can choose to accept the wedding
        case acceptWedding = "accept"

        /// The player matches or increases the game during auction
        case increaseOrMatchGame = "bid"
        
        /// The player does not want to play
        case withdrawFromAuction = "out"
        
        /// The player claims to win and doubles the game cost ("schießen")
        case doubleDuringGame = "raise"

        /// The url path for the client to call (e.g. /player/deal)
        var path: String {
            rawValue
        }
    }
}