# -*- coding: utf-8 -*-
import sys
import os
import math
import socket
import time
from flask import Flask, render_template, request, Response

# Percorso per le librerie installate sul NAS Synology
sys.path.append('/var/services/homes/Francesco/.local/lib/python3.8/site-packages')

app = Flask(__name__)

# CONFIGURAZIONE STAMPA CUPS
CUPS_IP = "192.168.1.14"
CUPS_PORT = 6310 
OUTPUT_DIR = "/volume1/docker/cups-pdf/output"

def calcola_dati(d):
    try:
        def to_m(v, u):
            val = float(v.replace(',', '.')) if v else 0
            if u == "mm": return val / 1000
            if u == "cm": return val / 100
            return val

        # Calcolo Volume base
        vol = to_m(d.get('l','0'), d.get('ul','m')) * to_m(d.get('p','0'), d.get('up','m')) * to_m(d.get('a','0'), d.get('ua','m'))
        peso_tot = vol * 2400
        
        mats = ['cem', 'sab', 'ghi']
        p = {m: float(d.get(f'p_{m}', '0').replace(',','.')) for m in mats}
        w = {m: float(d.get(f'w_{m}', '25').replace(',','.')) for m in mats}
        
        somma_p = sum(p.values())
        res = {"vol": f"{vol:.3f}", "peso": f"{peso_tot:.0f}"}
        
        tot_s = 0
        for m in mats:
            # Correzione BUG Ghiaia a 0
            if p[m] <= 0:
                res[f's_{m}'] = 0
                continue
            kg = (p[m]/somma_p)*peso_tot if somma_p > 0 else 0
            res[f's_{m}'] = math.ceil(kg/w[m])
            tot_s += res[f's_{m}']
        
        res["tot_sacc"] = tot_s
        return res
    except:
        return None

@app.route('/', methods=['GET', 'POST'])
def index():
    res = None
    if request.method == 'POST':
        res = calcola_dati(request.form)
    return render_template('index.html', res=res, form=request.form)

@app.route('/stampa_pdf', methods=['POST'])
def stampa_pdf():
    f = request.form
    # Creazione stringa semplice per il report
    testo = f"REPORT CALCOLO CEMENTO\n"
    testo += f"Volume: {f.get('res_vol')} m3\n"
    testo += f"Totale Sacchetti: {f.get('res_tot_s')}\n"
    
    try:
        # Invio diretto alla porta 6310
        with socket.create_connection((CUPS_IP, CUPS_PORT), timeout=5) as s:
            s.sendall(testo.encode('utf-8'))
        return "OK - Report inviato a Virtual_PDF"
    except Exception as e:
        return f"Errore connessione porta 6310: {str(e)}"

@app.route('/download', methods=['POST'])
def download():
    f = request.form
    report = f"REPORT TECNICO\nVolume: {f.get('res_vol')} m3\nSacchetti: {f.get('res_tot_s')}"
    return Response(report, mimetype="text/plain", headers={"Content-disposition":"attachment;filename=Report.txt"})

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=5000)