package serve

import "github.com/google/uuid"

// Game is the JSON DTO for a game.
type Game struct {
	// Players is the players in the game.
	// The dealer is always the first player.
	Players [2]Player `json:"players"`
	// Action indicates the previous action taken in the game.
	Action string `json:"action"`
	// Winner indicates the winner of the match, if any.
	Winner Winner `json:"winner,omitempty"`
	// Round is the current round.
	Round int8 `json:"round"`
	// Dealer indicates whether the current player is the dealer.
	Dealer bool `json:"dealer"`
	// Damage is the damage a live shell will deal this turn.
	Damage int8 `json:"damage"`
	// Adrenaline indicates whether the current player has adrenaline.
	Adrenaline bool `json:"adrenaline"`
	// Shell gives whether the current shell is live if it is revealed.
	// Undefined if this game state is not for the current player or if the
	// current player hasn't revealed it.
	Shell *bool `json:"shell,omitempty"`
	// Previous gives whether the previously discharged shell was live.
	Previous *bool `json:"previous"`
	// Deadline is the deadline on the current player's move in milliseconds
	// since the Unix epoch.
	Deadline int64 `json:"deadline"`
	// Live is the number of live shells this round, if it is the first turn
	// of the round.
	Live int `json:"live,omitempty"`
	// Blank is the number of blank shells this round, if it is the first turn
	// of the round.
	Blank int `json:"blank,omitempty"`
}

// Player is the JSON DTO for a player.
type Player struct {
	// HP is the player's current health.
	HP int8 `json:"hp"`
	// Items is the player's items.
	Items [8]string `json:"items"`
	// Cuffs is whether the player is currently wearing cuffs.
	Cuffs bool `json:"cuffs,omitempty"`
}

type GameID struct{ uuid.UUID }

// GameStart is the JSON DTO given to each player when their game starts.
// Observers do not receive it.
type GameStart struct {
	ID     GameID `json:"id"`
	Dealer bool   `json:"dealer"`
}

// Winner is a round winner.
type Winner int8

const (
	NoWinner Winner = iota
	DealerWins
	ChallengerWins
)

var winners = [...][]byte{
	NoWinner:       []byte("null"),
	DealerWins:     []byte("0"),
	ChallengerWins: []byte("1"),
}

func (w *Winner) MarshalJSON() ([]byte, error) {
	return winners[*w], nil
}