using UnityEngine;
using System.Collections.Generic;
using Mirror;

/// <summary>
/// CablageReseau.cs - v6.7 Multijoueur
/// 
/// v6.7 : sync longueur toron
///   - CmdSyncLongueurToron : met à jour la SyncVar longueur sur le serveur
///     après consommation ou restitution de câble. Propage automatiquement
///     à tous les clients via le hook de ToronNetworkSync.
///
/// v6.4 : sync câbles RJ45 + alimentation + interrupteur prise
/// 
/// SETUP : Ajouter sur le prefab PlayerCapsule.
/// </summary>
public class CablageReseau : NetworkBehaviour
{
    // ════════════════════════════════════════════════════════════
    // CÂBLES RJ45
    // ════════════════════════════════════════════════════════════

    [Command]
    public void CmdCreerCableRJ45(uint equipSourceNetId, int portSourceIndex,
                                   uint equipDestNetId, int portDestIndex,
                                   Color couleur, float longueur)
    {
        Debug.Log($"[Serveur] Câble RJ45 créé : equip {equipSourceNetId} port {portSourceIndex} → equip {equipDestNetId} port {portDestIndex}");
        RpcCreerCableRJ45(equipSourceNetId, portSourceIndex, equipDestNetId, portDestIndex, couleur, longueur);
    }

    [ClientRpc]
    void RpcCreerCableRJ45(uint equipSourceNetId, int portSourceIndex,
                           uint equipDestNetId, int portDestIndex,
                           Color couleur, float longueur)
    {
        if (isLocalPlayer) return;

        PortRJ45 portSource = TrouverPortRJ45(equipSourceNetId, portSourceIndex);
        PortRJ45 portDest = TrouverPortRJ45(equipDestNetId, portDestIndex);

        if (portSource == null || portDest == null)
        {
            Debug.LogWarning($"[CablageReseau] Ports introuvables pour câble RJ45 distant");
            return;
        }

        List<PointAccroche> chemin = ConstruireCheminAutoLocal(
            portSource.GetPointConnexion(), portDest.GetPointConnexion());

        string nom = "Cable_" + portSource.nomPort + "_vers_" + portDest.nomPort + "_distant";
        GameObject cableObj = new GameObject(nom);
        CableRJ45 cable = cableObj.AddComponent<CableRJ45>();
        cable.Initialiser(portSource, portDest, chemin, couleur, longueur, null);

        portSource.Connecter(portDest, cable);
        portDest.Connecter(portSource, cable);

        Debug.Log($"[CablageReseau] Câble RJ45 distant créé : {portSource.nomPort} → {portDest.nomPort}");
    }

    [Command]
    public void CmdSupprimerCableRJ45(uint equipSourceNetId, int portSourceIndex,
                                       uint equipDestNetId, int portDestIndex)
    {
        Debug.Log($"[Serveur] Câble RJ45 supprimé");
        RpcSupprimerCableRJ45(equipSourceNetId, portSourceIndex, equipDestNetId, portDestIndex);
    }

    [ClientRpc]
    void RpcSupprimerCableRJ45(uint equipSourceNetId, int portSourceIndex,
                               uint equipDestNetId, int portDestIndex)
    {
        if (isLocalPlayer) return;

        PortRJ45 portSource = TrouverPortRJ45(equipSourceNetId, portSourceIndex);
        PortRJ45 portDest = TrouverPortRJ45(equipDestNetId, portDestIndex);

        if (portSource != null && portSource.cable != null)
        {
            portSource.cable.SupprimerComplet();
        }
        else if (portDest != null && portDest.cable != null)
        {
            portDest.cable.SupprimerComplet();
        }

        Debug.Log("[CablageReseau] Câble RJ45 distant supprimé");
    }

    // ════════════════════════════════════════════════════════════
    // SYNC LONGUEUR TORON (v6.7)
    // ════════════════════════════════════════════════════════════

    /// <summary>
    /// v6.7 : Met à jour la SyncVar longueur du toron côté serveur.
    /// Appelé par CableManager après consommation ou restitution de câble.
    /// La SyncVar de ToronNetworkSync propage automatiquement la nouvelle
    /// longueur à TOUS les clients via le hook.
    /// </summary>
    [Command]
    public void CmdSyncLongueurToron(uint toronNetId, float longueurRestante, float longueurTotale)
    {
        if (!NetworkServer.spawned.ContainsKey(toronNetId)) return;
        var obj = NetworkServer.spawned[toronNetId];
        if (obj == null) return;

        ToronNetworkSync sync = obj.GetComponent<ToronNetworkSync>();
        if (sync != null)
        {
            sync.ServerSetLongueur(longueurTotale, longueurRestante);
            Debug.Log($"[Serveur] Longueur toron sync : {obj.name} → {longueurRestante:F1}m / {longueurTotale:F1}m");
        }
    }

    // ════════════════════════════════════════════════════════════
    // CÂBLES ALIMENTATION
    // ════════════════════════════════════════════════════════════

    [Command]
    public void CmdCreerCableAlim(uint pduNetId, int indexPrise,
                                   uint equipNetId, int indexPortAlim,
                                   Color couleur)
    {
        Debug.Log($"[Serveur] Câble alim créé : PDU {pduNetId} prise {indexPrise} → equip {equipNetId} port {indexPortAlim}");

        PriseC13 prise = TrouverPriseC13(pduNetId, indexPrise);
        PortAlimentation port = TrouverPortAlimentation(equipNetId, indexPortAlim);
        if (prise != null && port != null && !prise.estConnectee)
        {
            GameObject cableObj = new GameObject("CableAlim_serveur");
            CableAlimentation cable = cableObj.AddComponent<CableAlimentation>();
            cable.couleurCable = couleur;
            cable.Initialiser(prise, port);
            prise.Connecter(cable, port);
            port.Connecter(cable, prise);
        }

        RpcCreerCableAlim(pduNetId, indexPrise, equipNetId, indexPortAlim, couleur);
    }

    [ClientRpc]
    void RpcCreerCableAlim(uint pduNetId, int indexPrise,
                           uint equipNetId, int indexPortAlim,
                           Color couleur)
    {
        if (isLocalPlayer) return;

        PriseC13 prise = TrouverPriseC13(pduNetId, indexPrise);
        PortAlimentation port = TrouverPortAlimentation(equipNetId, indexPortAlim);

        if (prise == null || port == null)
        {
            Debug.LogWarning("[CablageReseau] Prise/Port introuvables pour câble alim distant");
            return;
        }

        GameObject cableObj = new GameObject("CableAlim_distant");
        CableAlimentation cable = cableObj.AddComponent<CableAlimentation>();
        cable.couleurCable = couleur;
        cable.Initialiser(prise, port);

        prise.Connecter(cable, port);
        port.Connecter(cable, prise);

        Debug.Log($"[CablageReseau] Câble alim distant créé : PDU prise #{indexPrise} → {port.nomPort}");
    }

    [Command]
    public void CmdSupprimerCableAlim(uint pduNetId, int indexPrise,
                                       uint equipNetId, int indexPortAlim)
    {
        Debug.Log($"[Serveur] Câble alim supprimé");

        PriseC13 prise = TrouverPriseC13(pduNetId, indexPrise);
        if (prise != null && prise.cableBranche != null)
            prise.cableBranche.Supprimer();

        RpcSupprimerCableAlim(pduNetId, indexPrise, equipNetId, indexPortAlim);
    }

    [ClientRpc]
    void RpcSupprimerCableAlim(uint pduNetId, int indexPrise,
                               uint equipNetId, int indexPortAlim)
    {
        if (isLocalPlayer) return;

        PriseC13 prise = TrouverPriseC13(pduNetId, indexPrise);

        if (prise != null && prise.cableBranche != null)
        {
            prise.cableBranche.Supprimer();
        }
        else
        {
            PortAlimentation port = TrouverPortAlimentation(equipNetId, indexPortAlim);
            if (port != null && port.cableBranche != null)
                port.cableBranche.Supprimer();
        }

        Debug.Log("[CablageReseau] Câble alim distant supprimé");
    }

    // ════════════════════════════════════════════════════════════
    // INTERRUPTEUR PRISE
    // ════════════════════════════════════════════════════════════

    [Command]
    public void CmdBasculerPrise(uint pduNetId, int indexPrise)
    {
        PriseC13 prise = TrouverPriseC13(pduNetId, indexPrise);
        if (prise != null)
            prise.BasculerInterrupteur();

        RpcBasculerPrise(pduNetId, indexPrise);
    }

    [ClientRpc]
    void RpcBasculerPrise(uint pduNetId, int indexPrise)
    {
        if (isLocalPlayer) return;

        PriseC13 prise = TrouverPriseC13(pduNetId, indexPrise);
        if (prise != null)
            prise.BasculerInterrupteur();
    }

    // ════════════════════════════════════════════════════════════
    // HELPERS — Recherche de composants par netId + index
    // ════════════════════════════════════════════════════════════
    // ════════════════════════════════════════════════════════════
    // HELPER UNIVERSEL : trouver un NetworkIdentity spawned
    // Utilise NetworkServer.spawned cote serveur (dedicated inclus),
    // NetworkClient.spawned cote client. Les deux sont remplis en mode Host.
    // Sans ce helper, les [Command] executees sur un dedicated server ne
    // trouvaient aucun objet car NetworkClient.spawned est vide sans client local.
    // ════════════════════════════════════════════════════════════
    private static GameObject TrouverGameObjectNetId(uint netId)
    {
        if (Mirror.NetworkServer.active &&
            Mirror.NetworkServer.spawned.TryGetValue(netId, out var ni1) &&
            ni1 != null)
            return ni1.gameObject;

        if (Mirror.NetworkClient.active &&
            Mirror.NetworkClient.spawned.TryGetValue(netId, out var ni2) &&
            ni2 != null)
            return ni2.gameObject;

        return null;
    }



    private PortRJ45 TrouverPortRJ45(uint equipNetId, int portIndex)
    {
        GameObject equipGO = TrouverGameObjectNetId(equipNetId);
        if (equipGO == null) return null;

        PortRJ45[] ports = equipGO.GetComponentsInChildren<PortRJ45>();

        foreach (var port in ports)
        {
            if (port.numeroPort == portIndex)
                return port;
        }

        if (portIndex >= 0 && portIndex < ports.Length)
            return ports[portIndex];

        return null;
    }

    private PriseC13 TrouverPriseC13(uint pduNetId, int indexPrise)
    {
        GameObject pduGO = TrouverGameObjectNetId(pduNetId);
        if (pduGO == null) return null;

        PDU pdu = pduGO.GetComponent<PDU>();

        if (pdu != null && indexPrise >= 0 && indexPrise < pdu.prises.Count)
            return pdu.prises[indexPrise];

        PriseC13[] prises = pduGO.GetComponentsInChildren<PriseC13>();
        foreach (var p in prises)
            if (p.indexPrise == indexPrise) return p;

        return null;
    }

    private PortAlimentation TrouverPortAlimentation(uint equipNetId, int indexPort)
    {
        GameObject equipGO = TrouverGameObjectNetId(equipNetId);
        if (equipGO == null) return null;

        PortAlimentation[] ports = equipGO.GetComponentsInChildren<PortAlimentation>();

        if (indexPort >= 0 && indexPort < ports.Length)
            return ports[indexPort];

        return null;
    }

    private List<PointAccroche> ConstruireCheminAutoLocal(Vector3 posSource, Vector3 posDest)
    {
        List<PointAccroche> chemin = new List<PointAccroche>();
        PointAccroche[] tousPoints = FindObjectsOfType<PointAccroche>();

        if (tousPoints.Length == 0) return chemin;

        PointAccroche ptDepart = null;
        float bestDistDepart = 3f;
        foreach (var p in tousPoints)
        {
            float d = Vector3.Distance(posSource, p.GetPosition());
            if (d < bestDistDepart) { bestDistDepart = d; ptDepart = p; }
        }

        PointAccroche ptArrivee = null;
        float bestDistArrivee = 3f;
        foreach (var p in tousPoints)
        {
            float d = Vector3.Distance(posDest, p.GetPosition());
            if (d < bestDistArrivee) { bestDistArrivee = d; ptArrivee = p; }
        }

        if (ptDepart == null || ptArrivee == null) return chemin;
        if (ptDepart == ptArrivee) { chemin.Add(ptDepart); return chemin; }

        float distanceVoisinage = 1.5f;
        Dictionary<PointAccroche, float> gScore = new Dictionary<PointAccroche, float>();
        Dictionary<PointAccroche, PointAccroche> cameFrom = new Dictionary<PointAccroche, PointAccroche>();
        HashSet<PointAccroche> closedSet = new HashSet<PointAccroche>();
        List<PointAccroche> openSet = new List<PointAccroche>();

        gScore[ptDepart] = 0;
        openSet.Add(ptDepart);

        int maxIter = 500;
        int iter = 0;

        while (openSet.Count > 0 && iter < maxIter)
        {
            iter++;
            PointAccroche current = null;
            float bestF = float.MaxValue;
            foreach (var n in openSet)
            {
                float g = gScore.ContainsKey(n) ? gScore[n] : float.MaxValue;
                float f = g + Vector3.Distance(n.GetPosition(), ptArrivee.GetPosition());
                if (f < bestF) { bestF = f; current = n; }
            }
            if (current == null) break;
            if (current == ptArrivee)
            {
                List<PointAccroche> result = new List<PointAccroche> { current };
                while (cameFrom.ContainsKey(current))
                {
                    current = cameFrom[current];
                    result.Insert(0, current);
                }
                return result;
            }

            openSet.Remove(current);
            closedSet.Add(current);

            foreach (var autre in tousPoints)
            {
                if (autre == current || closedSet.Contains(autre)) continue;
                if (Vector3.Distance(current.GetPosition(), autre.GetPosition()) > distanceVoisinage) continue;

                float tentG = gScore[current] + Vector3.Distance(current.GetPosition(), autre.GetPosition());
                if (!openSet.Contains(autre)) openSet.Add(autre);
                else if (gScore.ContainsKey(autre) && tentG >= gScore[autre]) continue;

                cameFrom[autre] = current;
                gScore[autre] = tentG;
            }
        }

        chemin.Add(ptDepart);
        chemin.Add(ptArrivee);
        return chemin;
    }

    // ════════════════════════════════════════════════════════════
    // HELPERS PUBLICS
    // ════════════════════════════════════════════════════════════

    public static uint GetEquipNetId(PortRJ45 port)
    {
        if (port == null) return 0;
        NetworkIdentity netId = port.GetComponentInParent<NetworkIdentity>();
        return netId != null ? netId.netId : 0;
    }

    public static uint GetPDUNetId(PriseC13 prise)
    {
        if (prise == null || prise.pduParent == null) return 0;
        NetworkIdentity netId = prise.pduParent.GetComponent<NetworkIdentity>();
        return netId != null ? netId.netId : 0;
    }

    public static uint GetEquipNetIdFromPortAlim(PortAlimentation port)
    {
        if (port == null || port.equipement == null) return 0;
        NetworkIdentity netId = port.equipement.GetComponent<NetworkIdentity>();
        return netId != null ? netId.netId : 0;
    }

    public static int GetPortAlimIndex(PortAlimentation port)
    {
        if (port == null || port.equipement == null) return 0;
        PortAlimentation[] ports = port.equipement.GetComponentsInChildren<PortAlimentation>();
        for (int i = 0; i < ports.Length; i++)
            if (ports[i] == port) return i;
        return 0;
    }
}