using System.Collections.Generic;
using UnityEngine;

[System.Serializable]
public class FsaEntry
{
    public string fsa;
    public double lat;
    public double lon;
}

[System.Serializable]
public class FsaTable
{
    public FsaEntry[] entries;
}

public class FsaLocator : MonoBehaviour
{
    [Header("FSA JSON (FSA_Canada.json dans Resources)")]
    public TextAsset fsaJson;

    private Dictionary<string, Vector2> fsaLookup;

    private void Awake()
    {
        fsaLookup = new Dictionary<string, Vector2>();

        if (fsaJson == null)
        {
            Debug.LogError("FsaLocator: fsaJson n'est pas assigné.");
            return;
        }

        FsaTable table = JsonUtility.FromJson<FsaTable>(fsaJson.text);
        if (table == null || table.entries == null)
        {
            Debug.LogError("FsaLocator: JSON FSA invalide.");
            return;
        }

        foreach (var e in table.entries)
        {
            if (string.IsNullOrEmpty(e.fsa)) continue;

            string key = e.fsa.ToUpper();
            if (!fsaLookup.ContainsKey(key))
            {
                fsaLookup[key] = new Vector2((float)e.lat, (float)e.lon);
            }
        }

        Debug.Log("FsaLocator: " + fsaLookup.Count + " FSA chargés.");
    }

    public bool TryGetLatLonFromPostal(string postalCode, out double lat, out double lon)
    {
        lat = 0;
        lon = 0;

        if (string.IsNullOrWhiteSpace(postalCode)) return false;

        string pc = postalCode.ToUpper().Trim().Replace(" ", "");
        if (pc.Length < 3) return false;

        string fsa = pc.Substring(0, 3);

        if (fsaLookup != null && fsaLookup.TryGetValue(fsa, out Vector2 pos))
        {
            lat = pos.x;
            lon = pos.y;
            return true;
        }

        return false;
    }
}