using System;
using System.Collections.Generic;
using System.Linq;

namespace Babushka.scripts.CSharp.Common.Fight;

public static class FightUtils
{
    public static int GetEnteredAmount(this FightWorld.FighterGroup self)
    {
        return self.enemies.Count(e => e.IsAlive() && e.entered);
    }

    public static IEnumerable<FightWorld.Fighter> GetUptoUnenteredFighters(
        this FightWorld.FighterGroup self,
        int maxFighters)
    {
        if (maxFighters <= self.enemies.Count)
            return self.enemies
                .Where(e => !e.entered && e.IsAlive());

        return self.enemies
            .Where(e => !e.entered && e.IsAlive())
            .Take(maxFighters);
    }

    public static bool IsAlive(this FightWorld.Fighter self)
    {
        return self.GetHealth() > 0;
    }

    public static bool IsDead(this FightWorld.Fighter self)
    {
        return !self.IsAlive();
    }

    public static int GetHealth(this FightWorld.Fighter self)
    {
        return Math.Max(self.health ?? self.maxHealth, 0);
    }

    public static void AddHealth(this FightWorld.Fighter self, int addHealth)
    {
        self.health = self.GetHealth() + addHealth;
    }

    public static bool AreAllDead(this FightWorld.FighterGroup self)
    {
        return self.enemies.All(e => e.IsDead());
    }
}