import uuid
from fasthtml.common import *
from starlette.staticfiles import StaticFiles
from starlette.responses import FileResponse, Response, HTMLResponse, RedirectResponse
from starlette.middleware.base import BaseHTTPMiddleware

from modules.theme import get_theme_hdrs
from modules.database import nettoyer_vieilles_discussions, HISTORY_FILE, load_history, save_history
from modules.ui_components import render_main_page, render_sidebar, render_login_page
from modules.chat_handler import handle_chat_request
from modules.security import verifier_et_bloquer_vpn, journaliser_ip
from modules.auth_manager import IDENTIFIANTS_ADMIN, verifier_mot_de_passe

# --- MIDDLEWARE DE SÉCURITÉ ---
class SecurityMiddleware(BaseHTTPMiddleware):
    async def dispatch(self, request, call_next):
        ip = request.headers.get("X-Forwarded-For", request.client.host).split(",")[0].strip()
        utilisateur = request.cookies.get("aethas_user", "visiteur")
        
        if not request.url.path.startswith("/Logo") and not request.url.path.startswith("/login"):
            if verifier_et_bloquer_vpn(ip, utilisateur):
                return HTMLResponse("<h1 style='color:red; text-align:center;'>Accès refusé</h1><p style='text-align:center;'>VPN ou Proxy strictement interdit.</p>", status_code=403)
            journaliser_ip(ip, f"Accès à {request.url.path}")
            
        return await call_next(request)

nettoyer_vieilles_discussions()

app, rt = fast_app(
    hdrs=get_theme_hdrs(), 
    secret_key="super_secret_aethas",
    middleware=[Middleware(SecurityMiddleware)]
)

app.mount("/Logo", StaticFiles(directory="Logo"), name="Logo")

# --- ROUTES D'AUTHENTIFICATION ---
@rt('/login')
def get():
    return render_login_page()

@rt('/login')
async def post(request, session):
    form = await request.form()
    if form.get("email") == IDENTIFIANTS_ADMIN["email"] and verifier_mot_de_passe(form.get("password"), IDENTIFIANTS_ADMIN["mot_de_passe_hash"]):
        session['user'] = "xavier"
        resp = RedirectResponse('/', status_code=303)
        resp.set_cookie("aethas_user", "xavier", max_age=86400) # Utilisé par le Middleware
        return resp
    return render_login_page(error="Accès refusé. Identifiants incorrects.")

@rt('/logout')
def get(session):
    session.clear()
    resp = RedirectResponse('/login', status_code=303)
    resp.delete_cookie("aethas_user")
    return resp

# --- ROUTES PROTÉGÉES ---
@rt('/')
def get(session):
    if 'user' not in session:
        return RedirectResponse('/login', status_code=303)
    if 'current_chat_id' not in session or not session['current_chat_id']:
        session['current_chat_id'] = str(uuid.uuid4())
    return render_main_page(session['current_chat_id'], utilisateur_nom=session['user'])

@rt('/chat')
async def post(request, session: dict):
    if 'user' not in session: return HTMLResponse("Non autorisé", status_code=401)
    return await handle_chat_request(request, session)

@rt('/favicon.ico')
def favicon_get(): return Response(status_code=204)

@rt('/ping')
def get(): return Response(status_code=204)

@rt('/new_chat')
def get(session): 
    if 'user' in session: session['current_chat_id'] = str(uuid.uuid4())
    return RedirectResponse('/', status_code=303)

@rt('/load_chat/{cid}')
def get(cid: str, session):
    if cid and cid != "null" and 'user' in session: session['current_chat_id'] = cid
    return RedirectResponse('/', status_code=303)

@rt('/rename/{cid}')
def post(cid: str, req):
    h = load_history()
    if cid in h and (nom := req.headers.get("HX-Prompt")): h[cid]['title'] = nom; save_history(h)
    return render_sidebar()

@rt('/pin/{cid}')
def post(cid: str):
    h = load_history()
    if cid in h: h[cid]['pinned'] = not h[cid].get('pinned', False); save_history(h)
    return render_sidebar()

@rt('/delete/{cid}')
def post(cid: str):
    h, cid_str = load_history(), str(cid)
    if cid_str in h: del h[cid_str]; save_history(h)
    return render_sidebar()

if __name__ == '__main__':
    serve(port=5001)