import os
import json
import time
import requests
from datetime import datetime
import tiktoken
from modules.logger import log_event

# FORCAGE DES CHEMINS ABSOLUS
BASE_DIR = "/DATA/AppData/MULTI-IA-AETHAS38"
os.makedirs(BASE_DIR, exist_ok=True)
BALANCES_FILE = os.path.join(BASE_DIR, "aethas_balances.json")
AUDIT_FILE = os.path.join(BASE_DIR, "aethas_financial_audit.json")
TARIFS_FILE = os.path.join(BASE_DIR, "tarifs_openrouter.json")

VIP_ADMIN_USERS = ["xavier", "céline", "celine", "anaëlle", "anaelle", "renan", "audric"]

def obtenir_tarifs_dynamiques() -> dict:
    maintenant = time.time()
    
    if os.path.exists(TARIFS_FILE):
        if maintenant - os.path.getmtime(TARIFS_FILE) < 7200:
            try:
                with open(TARIFS_FILE, "r", encoding="utf-8") as f:
                    return json.load(f)
            except Exception:
                pass
                
    tarifs = {}
    try:
        resp = requests.get("https://openrouter.ai/api/v1/models", timeout=10)
        if resp.status_code == 200:
            data = resp.json().get("data", [])
            for m in data:
                pricing = m.get("pricing", {})
                p_prompt = float(pricing.get("prompt", 0.0))
                p_comp = float(pricing.get("completion", 0.0))
                tarifs[m["id"]] = max(p_prompt, p_comp)
            
            with open(TARIFS_FILE, "w", encoding="utf-8") as f:
                json.dump(tarifs, f, indent=4)
            log_event("INFO", "BILLING", "Tarifs OpenRouter mis à jour dynamiquement.")
            return tarifs
    except Exception as e:
        log_event("ERROR", "BILLING", f"Échec récupération des tarifs : {e}")
        
    if os.path.exists(TARIFS_FILE):
        try:
            with open(TARIFS_FILE, "r", encoding="utf-8") as f:
                return json.load(f)
        except Exception:
            pass
    return {}

def charger_soldes() -> dict:
    if os.path.exists(BALANCES_FILE):
        try:
            with open(BALANCES_FILE, "r", encoding="utf-8") as f:
                return json.load(f)
        except Exception:
            pass
    soldes = {"cagnotte_commune_vip": 35.00}
    sauvegarder_soldes(soldes)
    return soldes

def sauvegarder_soldes(soldes: dict):
    with open(BALANCES_FILE, "w", encoding="utf-8") as f:
        json.dump(soldes, f, indent=4)

def enregistrer_transaction_audit(utilisateur: str, rang: str, modele: str, tokens: int, cout_brut: float, prix_facture: float, type_op: str = "DEBIT_REQUETE"):
    entree = {
        "timestamp": time.time(),
        "date": datetime.now().strftime("%Y-%m-%d %H:%M:%S"),
        "utilisateur": utilisateur,
        "rang": rang,
        "type_operation": type_op,
        "modele": modele,
        "tokens": tokens,
        "cout_brut_api": cout_brut,
        "prix_facture_client": prix_facture
    }
    audits = []
    if os.path.exists(AUDIT_FILE):
        try:
            with open(AUDIT_FILE, "r", encoding="utf-8") as f:
                audits = json.load(f)
        except Exception:
            audits = []
    audits.append(entree)
    with open(AUDIT_FILE, "w", encoding="utf-8") as f:
        json.dump(audits, f, indent=4)

def compter_tokens(texte: str, modele: str = "cl100k_base") -> int:
    try:
        enc = tiktoken.get_encoding(modele)
        return len(enc.encode(texte))
    except Exception as e:
        log_event("ERROR", "BILLING", f"Erreur comptage tokens : {e}")
        return 0

def estimer_cout_facture(prompt: str, modele_id: str, rang_utilisateur: str = "standard", multi_ia: bool = False) -> tuple[float, float, int]:
    tokens = compter_tokens(prompt)
    tarifs = obtenir_tarifs_dynamiques()
    cout_unitaire = tarifs.get(modele_id, 0.0)
    cout_brut = tokens * cout_unitaire
    
    if multi_ia and cout_brut > 0:
        cout_brut *= 2

    if cout_brut == 0.0:
        return 0.0, 0.0, tokens

    rang = rang_utilisateur.lower()
    if rang in ["super admin", "admin", "vip"] or rang in VIP_ADMIN_USERS:
        prix_facture = cout_brut
    elif rang == "famille":
        prix_facture = cout_brut / 0.925
    else:
        prix_facture = cout_brut / 0.85

    return round(cout_brut, 6), round(prix_facture, 6), tokens

def verifier_et_valider_budget(prompt: str, modele_id: str, utilisateur_nom: str = "xavier", rang_utilisateur: str = "super admin", multi_ia: bool = False):
    cout_brut, prix_facture, tokens = estimer_cout_facture(prompt, modele_id, rang_utilisateur, multi_ia)
    if prix_facture == 0.0:
        return True, 0.0

    soldes = charger_soldes()
    utilisateur_cle = utilisateur_nom.lower()
    
    if utilisateur_cle in VIP_ADMIN_USERS or rang_utilisateur.lower() in ["super admin", "admin", "vip"]:
        solde_disponible = soldes.get("cagnotte_commune_vip", 0.0)
        cle_compte = "cagnotte_commune_vip"
    else:
        solde_disponible = soldes.get(utilisateur_cle, 0.0)
        cle_compte = utilisateur_cle

    if solde_disponible < prix_facture:
        log_event("WARNING", "BILLING", f"Rejet : solde insuffisant pour {utilisateur_nom} ({solde_disponible} $ < {prix_facture} $)")
        raise Exception(f"SOLDE_INSUFFISANT|{prix_facture}|{solde_disponible}")

    soldes[cle_compte] = round(solde_disponible - prix_facture, 6)
    sauvegarder_soldes(soldes)
    
    enregistrer_transaction_audit(utilisateur_nom, rang_utilisateur, modele_id, tokens, cout_brut, prix_facture)
    log_event("INFO", "BILLING", f"Requête validée [{rang_utilisateur}] - Débit : {prix_facture} $ - Solde restant : {soldes[cle_compte]} $")
    return True, prix_facture

def obtenir_solde(utilisateur_nom: str) -> float:
    # --- SYNCHRONISATION DIRECTE POUR L'ADMINISTRATEUR PRINCIPAL ---
    if utilisateur_nom.lower() in ["xavier"]:
        api_key = os.getenv("OPENROUTER_API_KEY")
        if api_key:
            try:
                resp = requests.get("https://openrouter.ai/api/v1/auth/key", headers={"Authorization": f"Bearer {api_key}"}, timeout=3)
                if resp.status_code == 200:
                    data = resp.json().get("data", {})
                                                            
                    credit_total = data.get('usage', 0.0)
                    limite_restante = data.get('limit_remaining')
                    balance = data.get('balance', 0.0)
                    
                    vrai_solde = float(limite_restante) if limite_restante is not None else float(balance)
                    
                    if vrai_solde > 0 or limite_restante is not None:
                        soldes = charger_soldes()
                        soldes["cagnotte_commune_vip"] = vrai_solde
                        soldes["xavier"] = vrai_solde
                        sauvegarder_soldes(soldes)
                        return vrai_solde
            except Exception as e:
                log_event("WARNING", "BILLING", f"Échec de synchronisation OpenRouter : {e}")

    # --- COMPORTEMENT STANDARD POUR LES AUTRES UTILISATEURS ---
    soldes = charger_soldes()
    if utilisateur_nom.lower() in VIP_ADMIN_USERS:
        return soldes.get("cagnotte_commune_vip", 0.0)
    return soldes.get(utilisateur_nom.lower(), 0.0)

def generer_dossier_litige(utilisateur_nom: str, est_admin: bool = False) -> list:
    if not os.path.exists(AUDIT_FILE):
        return []
    try:
        with open(AUDIT_FILE, "r", encoding="utf-8") as f:
            tous_les_audits = json.load(f)
    except Exception:
        return []

    dossier = []
    for item in tous_les_audits:
        if item.get("utilisateur", "").lower() == utilisateur_nom.lower():
            if est_admin:
                dossier.append(item)
            else:
                dossier.append({
                    "date": item.get("date"),
                    "type_operation": item.get("type_operation"),
                    "modele": item.get("modele"),
                    "tokens": item.get("tokens"),
                    "montant_facture_ttc": item.get("prix_facture_client")
                })
    return dossier