using System;
using System.Linq;

namespace Socer;

// Compatibility helpers for old saves and tools. Player levels, XP and their
// growth plan are retired: upgrade cards change a skill slot, never these stats.
public static class CardDevelopment
{
    public const int MaxTrainingLevel=10;
    public const int TrainingStatCount=10;
    public static readonly string[] TrainingStatNames={"Pace","Shooting","Passing","Defending","Stamina","Goalkeeping","Dribbling","Physical","Aggression","Composure"};

    public static void Initialize(PlayerCard card)
    {
        if(card==null)return;
        // Retain every already-earned attribute. No level-dependent endpoint,
        // free skill or latent stat increase is applied during save loading.
        card.Potential=Math.Clamp(Math.Max(card.Overall,card.Potential),card.Overall,99);
        if(card.StatCaps?.Length!=6)card.StatCaps=Stats(card);
        if(string.IsNullOrEmpty(card.Edition))card.Edition=card.Overall>=CardRatings.Elite?"ELITE":
            card.Overall>=CardRatings.Gold?"GOLD":card.Overall>=CardRatings.Silver?"SILVER":"BRONZE";
    }

    public static int[] Stats(PlayerCard p)=>new[]{p.Pace,p.Shooting,p.Passing,p.Defence,p.Endurance,p.Keeping};
    public static int[] TrainingStats(PlayerCard p)=>new[]{p.Pace,p.Shooting,p.Passing,p.Defence,p.Endurance,p.Keeping,
        PlayerCardDetails.Dribbling(p),PlayerCardDetails.Physical(p),p.Aggression,p.Composure};
    public static int Cap(PlayerCard p,int stat)=>p.TrainingTargets?.Length==TrainingStatCount?p.TrainingTargets[stat]:
        p.StatCaps?.Length==6 && stat<6?p.StatCaps[stat]:99;

    // Kept as an explicit data-editing helper for existing verification tools;
    // no career upgrade or match reward calls it.
    public static void Add(PlayerCard p,int stat,int amount)
    {
        switch(stat)
        {
            case 0:p.Pace+=amount;break;
            case 1:p.Shooting+=amount;break;
            case 2:p.Passing+=amount;break;
            case 3:p.Defence+=amount;break;
            case 4:p.Endurance+=amount;break;
            case 5:p.Keeping+=amount;break;
            case 6:p.Dribbling=PlayerCardDetails.Dribbling(p)+amount;break;
            case 7:p.Physical=PlayerCardDetails.Physical(p)+amount;break;
            case 8:p.Aggression+=amount;break;
            case 9:p.Composure+=amount;break;
        }
    }
    public static void ApplySupportingStats(PlayerCard p,int[] gains) { }
    public static bool Fits(PlayerCard p,int[] gains)=>gains!=null && gains.All(g=>g==0);
    public static int[] TrainingPlan(PlayerCard player,TrainingCardItem item)=>new int[TrainingStatCount];
}