import { Difficulty, GameType, Gold, MutableTile, Player, PlayerInfo, PlayerType, TerrainType, TerraNullius, Tick, Tile, Unit, UnitInfo, UnitType } from "../game/Game";
import { GameConfig } from "../Schemas";
import { assertNever, distSort, manhattanDist, simpleHash, within } from "../Util";
import { Config, ServerConfig, Theme } from "./Config";
import { pastelTheme } from "./PastelTheme";

export abstract class DefaultServerConfig implements ServerConfig {
    turnIntervalMs(): number {
        return 100
    }
    gameCreationRate(): number {
        return 1 * 60 * 1000
    }
    lobbyLifetime(): number {
        return 2 * 60 * 1000
    }
}


export class DefaultConfig implements Config {

    constructor(private _serverConfig: ServerConfig, private _gameConfig: GameConfig) {

    }

    gameConfig(): GameConfig {
        return this._gameConfig
    }

    serverConfig(): ServerConfig {
        return this._serverConfig
    }

    difficultyModifier(difficulty: Difficulty): number {
        switch (difficulty) {
            case Difficulty.Easy:
                return 1
            case Difficulty.Medium:
                return 3
            case Difficulty.Hard:
                return 9
            case Difficulty.Impossible:
                return 18
        }
    }


    cityPopulationIncrease(): number {
        return 250_000
    }

    falloutDefenseModifier(): number {
        return 5
    }

    defensePostRange(): number {
        return 40
    }
    defensePostDefenseBonus(): number {
        return 5
    }
    spawnNPCs(): boolean {
        return true
    }
    tradeShipGold(src: Unit, dst: Unit): Gold {
        const dist = manhattanDist(src.tile().cell(), dst.tile().cell())
        return 10000 + 100 * Math.pow(dist, 1.1)
    }
    tradeShipSpawnRate(): number {
        return 500
    }

    unitInfo(type: UnitType): UnitInfo {
        switch (type) {
            case UnitType.TransportShip:
                return {
                    cost: () => 0,
                    territoryBound: false,
                }
            case UnitType.Destroyer:
                return {
                    cost: (p: Player) => (p.units(UnitType.Destroyer).length + 1) * 250_000,
                    territoryBound: false,
                    maxHealth: 1000,
                }
            case UnitType.Battleship:
                return {
                    cost: (p: Player) => (p.units(UnitType.Battleship).length + 1) * 500_000,
                    territoryBound: false,
                    maxHealth: 5000
                }
            case UnitType.Shell:
                return {
                    cost: () => 0,
                    territoryBound: false,
                    damage: 250
                }
            case UnitType.Port:
                return {
                    cost: (p: Player) =>
                        Math.min(
                            1_000_000,
                            Math.pow(2, p.units(UnitType.Port).length) * 250_000
                        ),
                    territoryBound: true
                }
            case UnitType.AtomBomb:
                return {
                    cost: () => 750_000,
                    territoryBound: false
                }
            case UnitType.HydrogenBomb:
                return {
                    cost: () => 5_000_000,
                    territoryBound: false
                }
            case UnitType.TradeShip:
                return {
                    cost: () => 0,
                    territoryBound: false
                }
            case UnitType.MissileSilo:
                return {
                    cost: () => 1_000_000,
                    territoryBound: true
                }
            case UnitType.DefensePost:
                return {
                    cost: (p: Player) =>
                        Math.min(
                            250_000,
                            (p.units(UnitType.DefensePost).length + 1) * 50_000
                        ),
                    territoryBound: true
                }
            case UnitType.City:
                return {
                    cost: (p: Player) => Math.min(
                        1_000_000,
                        Math.pow(2, p.units(UnitType.City).length) * 125_000,
                    ),
                    territoryBound: true
                }
            default:
                assertNever(type)
        }
    }
    defaultDonationAmount(sender: Player): number {
        return Math.floor(sender.troops() / 3)
    }
    donateCooldown(): Tick {
        return 10 * 10
    }
    emojiMessageDuration(): Tick {
        return 5 * 10
    }
    emojiMessageCooldown(): Tick {
        return 15 * 10
    }
    targetDuration(): Tick {
        return 10 * 10
    }
    targetCooldown(): Tick {
        return 15 * 10
    }
    allianceRequestCooldown(): Tick {
        return 30 * 10
    }
    allianceDuration(): Tick {
        return 600 * 10
    }
    percentageTilesOwnedToWin(): number {
        return 95
    }
    boatMaxNumber(): number {
        return 3
    }
    boatMaxDistance(): number {
        return 500
    }
    numSpawnPhaseTurns(gameType: GameType): number {
        return gameType == GameType.Singleplayer ? 100 : 300
    }
    numBots(): number {
        return 400
    }
    theme(): Theme { return pastelTheme; }

    attackLogic(attackTroops: number, attacker: Player, defender: Player | TerraNullius, tileToConquer: MutableTile): { attackerTroopLoss: number; defenderTroopLoss: number; tilesPerTickUsed: number } {
        let mag = 0
        let speed = 0
        switch (tileToConquer.terrain().type()) {
            case TerrainType.Plains:
                mag = 80
                speed = 15
                break
            case TerrainType.Highland:
                mag = 100
                speed = 20
                break
            case TerrainType.Mountain:
                mag = 120
                speed = 25
                break
        }
        mag *= tileToConquer.defenseBonus(attacker)
        speed *= tileToConquer.defenseBonus(attacker)
        if (tileToConquer.hasFallout()) {
            mag *= this.falloutDefenseModifier()
            speed *= this.falloutDefenseModifier()
        }

        if (attacker.isPlayer() && defender.isPlayer()) {
            if (attacker.type() == PlayerType.Human && defender.type() == PlayerType.Bot) {
                mag *= .8
            }
            if (attacker.type() == PlayerType.FakeHuman && defender.type() == PlayerType.Bot) {
                mag *= .8
            }
        }

        if (defender.isPlayer()) {
            return {
                attackerTroopLoss: within(defender.troops() / (2.5 * attackTroops), .1, 10) * mag,
                defenderTroopLoss: defender.troops() / defender.numTilesOwned(),
                tilesPerTickUsed: within(defender.troops() / (5 * attackTroops), .2, 1.5) * speed
            }
        } else {
            return {
                attackerTroopLoss: attacker.type() == PlayerType.Bot ? mag / 10 : mag / 5,
                defenderTroopLoss: 0,
                tilesPerTickUsed: within(2000 * Math.max(10, speed) / attackTroops, 5, 100)
            }
        }
    }

    attackTilesPerTick(attackTroops: number, attacker: Player, defender: Player | TerraNullius, numAdjacentTilesWithEnemy: number): number {
        if (defender.isPlayer()) {
            return within((5 * attackTroops) / defender.troops() * 2, .01, .5) * numAdjacentTilesWithEnemy * 3
        } else {
            return numAdjacentTilesWithEnemy * 2
        }
    }

    boatAttackAmount(attacker: Player, defender: Player | TerraNullius): number {
        return Math.floor(attacker.troops() / 5)
    }

    attackAmount(attacker: Player, defender: Player | TerraNullius) {
        if (attacker.type() == PlayerType.Bot) {
            return attacker.troops() / 20
        } else {
            return attacker.troops() / 5
        }
    }

    startManpower(playerInfo: PlayerInfo): number {
        if (playerInfo.playerType == PlayerType.Bot) {
            return 10000
        }
        if (playerInfo.playerType == PlayerType.FakeHuman) {
            // start troops * strength * difficulty
            switch (this._gameConfig.difficulty) {
                case Difficulty.Easy:
                case Difficulty.Medium:
                    return 1000
                case Difficulty.Hard:
                case Difficulty.Impossible:
                    return 2000
            }
        }
        return 25000
    }

    maxPopulation(player: Player): number {
        let maxPop = Math.pow(player.numTilesOwned(), .6) * 1000 + 50000
        if (player.type() == PlayerType.Bot) {
            return maxPop
        }
        return maxPop * 2 + player.units(UnitType.City).length * this.cityPopulationIncrease()
    }

    populationIncreaseRate(player: Player): number {
        let max = this.maxPopulation(player)

        // const thing = Math.sqrt(player.population() + player.population() * player.workers())

        let toAdd = 10 + Math.pow(player.population(), .73) / 4

        const ratio = 1 - (player.population() / max)
        toAdd *= ratio

        if (player.type() == PlayerType.FakeHuman) {
            toAdd *= 1.0
        }
        if (player.type() == PlayerType.Bot) {
            toAdd *= .7
        }
        let difficultyMultiplier = 1
        switch (this._gameConfig.difficulty) {
            case Difficulty.Easy:
                difficultyMultiplier = 1
                break
            case Difficulty.Medium:
                difficultyMultiplier = 1.2
                break
            case Difficulty.Hard:
                difficultyMultiplier = 1.5
                break
            case Difficulty.Impossible:
                difficultyMultiplier = 1.7
                break
        }
        if (player.type() == PlayerType.FakeHuman) {
            toAdd *= difficultyMultiplier
        }

        return Math.min(player.population() + toAdd, max) - player.population()
    }

    goldAdditionRate(player: Player): number {
        return Math.sqrt(player.workers() * player.numTilesOwned()) / 200
    }

    troopAdjustmentRate(player: Player): number {
        const maxDiff = this.maxPopulation(player) / 1000
        const target = player.population() * player.targetTroopRatio()
        const diff = target - player.troops()
        if (Math.abs(diff) < maxDiff) {
            return diff
        }
        const adjustment = maxDiff * Math.sign(diff)
        // Can ramp down troops much faster
        if (adjustment < 0) {
            return adjustment * 5
        }
        return adjustment
    }
}