import {Config} from "./configuration/Config"
import {GameEvent} from "./EventBus"
import {ClientID, GameID} from "./Schemas"

export type PlayerID = string

export class Cell {

    private strRepr: string

    constructor(
        public readonly x,
        public readonly y
    ) {
        this.strRepr = `Cell[${this.x},${this.y}]`
    }

    toString(): string {return this.strRepr}
}

export interface ExecutionView {
    isActive(): boolean
    owner(): Player
    activeDuringSpawnPhase(): boolean
}

export interface Execution extends ExecutionView {
    init(mg: MutableGame, ticks: number): void
    tick(ticks: number): void
    owner(): MutablePlayer
}

export class PlayerInfo {
    constructor(
        public readonly name: string,
        public readonly isBot: boolean,
        // null if bot.
        public readonly clientID: ClientID | null,
        public readonly id: PlayerID
    ) { }
}

export interface Tile {
    isLand(): boolean
    isShore(): boolean
    isOceanShore(): boolean
    isWater(): boolean
    isShorelineWater(): boolean
    isOcean(): boolean
    isLake(): boolean
    magnitude(): number
    owner(): Player | TerraNullius
    hasOwner(): boolean
    isBorder(): boolean
    borders(other: Player | TerraNullius): boolean
    isInterior(): boolean
    cell(): Cell
    game(): Game
    neighbors(): Tile[]
    neighborsWrapped(): Tile[]
    onShore(): boolean
}

export interface Boat {
    troops(): number
    tile(): Tile
    owner(): Player
    target(): Player | TerraNullius
    isActive(): boolean
}

export interface MutableBoat extends Boat {
    move(tile: Tile): void
    owner(): MutablePlayer
    target(): MutablePlayer | TerraNullius
    setTroops(troops: number): void
    delete(): void
}

export interface TerraNullius {
    ownsTile(cell: Cell): boolean
    isPlayer(): false
    id(): PlayerID // always zero, maybe make it TerraNulliusID?
}

export interface Player {
    name(): string
    clientID(): ClientID
    id(): PlayerID
    isBot(): boolean
    troops(): number
    boats(): Boat[]
    ownsTile(cell: Cell): boolean
    isAlive(): boolean
    executions(): ExecutionView[]
    borderTiles(): ReadonlySet<Tile>
    isPlayer(): this is Player
    neighbors(): (Player | TerraNullius)[]
    numTilesOwned(): number
    tiles(): ReadonlySet<Tile>
    sharesBorderWith(other: Player | TerraNullius): boolean
    toString(): string
}

export interface MutablePlayer extends Player {
    setName(name: string): void
    setTroops(troops: number): void
    addTroops(troops: number): void
    removeTroops(troops: number): void
    conquer(tile: Tile): void
    relinquish(tile: Tile): void
    executions(): Execution[]
    neighbors(): (MutablePlayer | TerraNullius)[]
    boats(): MutableBoat[]
    addBoat(troops: number, tile: Tile, target: Player | TerraNullius): MutableBoat
}

export interface Game {
    // Throws exception is player not found
    player(id: PlayerID): Player
    hasPlayer(id: PlayerID): boolean
    players(): Player[]
    tile(cell: Cell): Tile
    isOnMap(cell: Cell): boolean
    neighbors(cell: Cell | Tile): Tile[]
    width(): number
    height(): number
    forEachTile(fn: (tile: Tile) => void): void
    executions(): ExecutionView[]
    terraNullius(): TerraNullius
    tick(): void
    ticks(): number
    inSpawnPhase(): boolean
    addExecution(...exec: Execution[]): void
    config(): Config
}

export interface MutableGame extends Game {
    player(id: PlayerID): MutablePlayer
    players(): MutablePlayer[]
    addPlayer(playerInfo: PlayerInfo, troops: number): MutablePlayer
    executions(): Execution[]
    removeInactiveExecutions(): void
    removeExecution(exec: Execution)
}


export class TileEvent implements GameEvent {
    constructor(public readonly tile: Tile) { }
}

export class PlayerEvent implements GameEvent {
    constructor(public readonly player: Player) { }
}

export class BoatEvent implements GameEvent {
    constructor(public readonly boat: Boat, public oldTile: Tile) { }
}