using UnityEngine;

/// <summary>
/// Describes a weapon's attack characteristics.
/// All combat goes through this so we can easily add more weapon types later.
/// </summary>
[System.Serializable]
public class Weapon
{
    public string Name;

    /// <summary>Number of dice to roll for damage.</summary>
    public int DamageDiceCount;

    /// <summary>Faces on each damage die (e.g. 4 for d4).</summary>
    public int DamageDiceFaces;

    /// <summary>Flat bonus added on top of the dice roll.</summary>
    public int DamageBonus;

    /// <summary>
    /// Base hit-chance (0-1). Multiplied by attacker advantage when attacking.
    /// Default fists: 0.65 base. Can be tuned per weapon in the future.
    /// </summary>
    public float BaseHitChance;

    /// <summary>Melee reach in world-units.</summary>
    public float MeleeRange;

    public Weapon(string name, int diceCount, int diceFaces, int damageBonus = 0,
                  float baseHitChance = 0.65f, float meleeRange = 1.5f)
    {
        Name = name;
        DamageDiceCount = diceCount;
        DamageDiceFaces = diceFaces;
        DamageBonus = damageBonus;
        BaseHitChance = baseHitChance;
        MeleeRange = meleeRange;
    }

    /// <summary>Roll the damage dice and return the result.</summary>
    public int RollDamage()
    {
        int total = DamageBonus;
        for (int i = 0; i < DamageDiceCount; i++)
            total += Random.Range(1, DamageDiceFaces + 1);
        return Mathf.Max(1, total); // Always deal at least 1 damage
    }

    /// <summary>
    /// Attempt to hit a target.
    /// <paramref name="attackerAdvantage"/> is a 0-1 multiplier on top of BaseHitChance.
    /// 1.0 = full chance, 0.5 = halved, 1.5 = boosted (capped at 0.95 to never guarantee a hit).
    /// </summary>
    public bool TryHit(float attackerAdvantage = 1f)
    {
        float chance = Mathf.Clamp(BaseHitChance * attackerAdvantage, 0.05f, 0.95f);
        return Random.value <= chance;
    }

    // ---- Preset factories ----

    /// <summary>Default unarmed fists: 1d4 damage, 65 % base hit chance.</summary>
    public static Weapon Fists() => new Weapon("Fists", 1, 4, 0, 0.65f, 1.5f);
}