using System.Diagnostics;
using FNAF_Server.Enemies;
using FNAF_Server.Map;
using GlobalClassLib;
using PacketLib;

namespace FNAF_Server;

public class GameLogic {
    
    public const int START_CAMERA = 12;
    
    private static MovementOpportunity secondCycleTimer = new(1000);
    private static MovementOpportunity gamePhaseTimer = new(60_000);
    public static bool NSecondUpdate{ get; private set; } = false;

    public static MapTile P1Office;
    public static MapTile P2Office;
    public static MapTile[] Offices =>[P1Office, P2Office];

    public static int OfficeDoorUsage{ get; set; } = 10;
    public static int RemoteDoorUsage{ get; set; } = 3;
    public static int LightUsage{ get; set; } = 2;
    public static int PhaseCounter{ get; private set; } = 1;

    private static List<List<Enemy>> spawnOrder;

    private static int[] defaultSpawnPoints = [2, 22];
    
    private static Random random = new();
    
    private static bool unlimitedPower = false; // Debug

    // public const int POWER_MAX = 1000;
    // public static int P1Power{ get; set; } = Power.MAX_POWER_VALUE;
    // public static int P2Power{ get; set; } = Power.MAX_POWER_VALUE;
    // public static int[] PowerValues =>[P1Power, P2Power];
    
    public static Dictionary<object, (int usage, int pid)> PowerConsumers{ get; set; } = new();
    
    public static void Init() {
        // Create map
        MapManager.InitMap();
        P1Office = MapManager.Get(10);
        P2Office = MapManager.Get(14);
        //
        // foreach (var player in Server.Players.Values){
        //     player.state.power = Power.MAX_POWER_VALUE;
        // }
        
        //Send map to client
        TileConnector[] connectors = MapManager.GetAllConnectors();
        int[] connectorsConverted = new int[connectors.Length * 4];
        for (int i = 0; i < connectors.Length; i++){
            connectorsConverted[i * 4] = connectors[i].Tiles.tile1.Id;
            connectorsConverted[i * 4 + 1] = connectors[i].Tiles.tile2.Id;
            connectorsConverted[i * 4 + 2] = (int)connectors[i].Type;
            connectorsConverted[i * 4 + 3] = connectors[i].Owner == null ? -1 : connectors[i].Owner.state.pid;
        }

        List<int> p1Tiles = new();
        List<int> p2Tiles = new();
        List<int> neutralTiles = new();
        foreach (var tile in MapManager.GetAllTiles()){
            if(tile.Owner == null) neutralTiles.Add(tile.Id);
            else if(tile.Owner == Server.P1) p1Tiles.Add(tile.Id);
            else if(tile.Owner == Server.P2) p2Tiles.Add(tile.Id);
        }
        
        Server.SendPacket(new MapInitPacket{Connectors = connectorsConverted, UpsideDown = false, YourTiles = p1Tiles.ToArray(), OpponentTiles = p2Tiles.ToArray(), LitTiles = neutralTiles.ToArray()}, Server.P1.peer);
        Server.SendPacket(new MapInitPacket{Connectors = connectorsConverted, UpsideDown = true, YourTiles = p2Tiles.ToArray(), OpponentTiles = p1Tiles.ToArray(), LitTiles = neutralTiles.ToArray()}, Server.P2.peer);
        
        spawnOrder = [[new SpotEnemy(3), new MareEnemy(3)], [new DashEnemy(6)], [new LurkEnemy(3), new NekoEnemy(3)]];

        Thread.Sleep(3000);
        secondCycleTimer.Start();
        gamePhaseTimer.Start();
        Server.SendUpdateToAll([GameEvent.GAME_START()]);
        
        // EnemyManager.AddEnemy(new SpotEnemy(10)).Spawn(MapManager.Get(12));
        // EnemyManager.AddEnemy(new LurkEnemy(10)).Spawn(MapManager.Get(12));
        // EnemyManager.AddEnemy(new NekoEnemy(10)).Spawn(MapManager.Get(2));
        // EnemyManager.AddEnemy(new DashEnemy(10)).Spawn(MapManager.Get(12));
        // EnemyManager.AddEnemy(new MareEnemy(10)).Spawn(MapManager.Get(22));
        
        EnemyManager.AddEnemy(new LurkEnemy(4)).Spawn(MapManager.Get(2));
        EnemyManager.AddEnemy(new NekoEnemy(4)).Spawn(MapManager.Get(0));

    }
    public static void Update() {
        if(secondCycleTimer.Check()) NSecondUpdate = true;

        if (NSecondUpdate){
            (int p1, int p2) powerUsage = CalculatePowerUsage();
            Server.P1.state.power -= powerUsage.p1;
            Server.P2.state.power -= powerUsage.p2;
            
            foreach (var player in Server.Players.Values){
                if (player.state.power < 0){
                    player.state.poweredOut = true;
                    player.state.power = 0;
                    PowerOut(player);
                }
                // Server.SendUpdateToAll([GameEvent.POWER_OUT(player.state.pid)]);
            }

            if (unlimitedPower){ // Debug
                Server.P1.state.power = Power.MAX_POWER_VALUE;
                Server.P2.state.power = Power.MAX_POWER_VALUE;
            }
            
            Server.SendUpdateToAll([GameEvent.POWER_TICK(Server.P1.state.pid, Server.P1.state.power), GameEvent.POWER_TICK(Server.P2.state.pid, Server.P2.state.power)]);

            if (gamePhaseTimer.Check()){
                NextPhase();
            }
        }
        
        EnemyManager.Update();
        
        NSecondUpdate = false;
    }

    public static void DeclareWinner(ServerPlayer player) {
        if (Server.Players.Count == 2){
            Server.SendUpdateToAll([GameEvent.PLAYER_WIN(player.state.pid)]);
            Console.WriteLine("Player " + player.state.pid + " won!");
        }
        Thread.Sleep(1000);
        Server.Stop();
        
        if (!Server.AutoStop){
            Program.Restart();
        }
    }

    private static (int p1Usage, int p2Usage) CalculatePowerUsage() {
        int p1Usage = 0;
        int p2Usage = 0;
        
        foreach (var consumer in PowerConsumers){
            if (consumer.Value.pid == Server.P1.state.pid){
                p1Usage += consumer.Value.usage;
            }
            else if (consumer.Value.pid == Server.P2.state.pid){
                p2Usage += consumer.Value.usage;
            }
        }
        
        return (p1Usage, p2Usage);
    }

    private static void PowerOut(ServerPlayer player) {
        foreach (var door in MapManager.GetDoors(player)){
            door.Blocked = false;
        }
        foreach (var tile in MapManager.GetAllTiles().Where(t => t.Owner == player)){
            tile.Lit = false;
        }
        PowerConsumers.Where(c => c.Value.pid == player.state.pid).ToList().ForEach(c => PowerConsumers.Remove(c.Key));
        Server.SendUpdateToAll([GameEvent.POWER_OUT(player.state.pid)]);
    }

    private static void NextPhase() {
        PhaseCounter++;
        Server.SendUpdateToAll([GameEvent.NEXT_PHASE()]);
        
        int roll = spawnOrder.Count > 0 ? random.Next(3) : random.Next(1,3);
        switch (roll){
            case 0:
                int spawnRoll = random.Next(spawnOrder[0].Count);
                SpawnNext(spawnOrder[0][spawnRoll]);
                spawnOrder[0].RemoveAt(spawnRoll);
                if (spawnOrder[0].Count == 0){
                    spawnOrder.RemoveAt(0);
                }
                break;
            case 1:
                Enemy[] allEnemies = EnemyManager.GetAll();
                for (int i = 0; i < 2; i++){
                    Enemy enemy = allEnemies[random.Next(allEnemies.Length)];
                    enemy.SetDifficulty(enemy.Difficulty + 2);
                }
                break;
            case 2:
                Enemy[] enemies = EnemyManager.GetAll();
                for (int i = 0; i < enemies.Length; i++){
                    enemies[i].SetDifficulty(enemies[i].Difficulty + 1);
                }
                break;
                
        }
    }

    private static void SpawnNext(Enemy enemy) {
        if ((EnemyType)enemy.TypeId == EnemyType.NEKO || (EnemyType)enemy.TypeId == EnemyType.LURK || (EnemyType)enemy.TypeId == EnemyType.MARE){
            MapTile[] spawnLocations = defaultSpawnPoints.Select(i => MapManager.Get(i)).Where(t => EnemyManager.GetByLocation(t).All(e => !e.BlocksTile)).ToArray();
            if (spawnLocations.Length == 0){
                return;
            }
            enemy.Spawn(spawnLocations[random.Next(spawnLocations.Length)]);
        }
        else if ((EnemyType)enemy.TypeId == EnemyType.SPOT || (EnemyType)enemy.TypeId == EnemyType.DASH){
            enemy.Spawn(MapManager.Get(12));
        }
    }
}