const axios = require('axios');
const polylineLib = require('@mapbox/polyline');
require('dotenv').config({ path: '.env' });
const { _distKm } = require('./src/travel.js'); // Not exported, I'll copy the logic

function distKm(lat1, lng1, lat2, lng2) {
  const dLat = (lat2 - lat1) * Math.PI / 180;
  const dLng = (lng2 - lng1) * Math.PI / 180;
  const a = Math.sin(dLat/2)**2 + Math.cos(lat1*Math.PI/180) * Math.cos(lat2*Math.PI/180) * Math.sin(dLng/2)**2;
  return 6371 * 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
}

async function bulkRateTest() {
  const apiKey = process.env.API_MAPS;
  const origin = "25 Impasse du Puits du Suc, Saint-Martin-en-Haut, France";
  const destination = "Toulouse, France";
  
  const routesUrl = 'https://routes.googleapis.com/directions/v2:computeRoutes';
  const resToll = await axios.post(routesUrl, {
      travelMode: 'DRIVE', routingPreference: 'TRAFFIC_UNAWARE',
      origin: { address: origin }, destination: { address: destination },
  }, { headers: { 'Content-Type': 'application/json', 'X-Goog-Api-Key': apiKey, 'X-Goog-FieldMask': 'routes.polyline.encodedPolyline' } });

  const poly = resToll.data.routes[0].polyline.encodedPolyline;
  const polylineCoords = polylineLib.decode(poly, 5);
  
  const fs = require('fs');
  const path = require('path');
  const csvPath = path.join(__dirname, 'travel', 'gares_peage_export.csv');
  const rawCsv = fs.readFileSync(csvPath, 'utf8');
  const stations = [];
  const lines = rawCsv.split('\n');
  for (let i = 1; i < lines.length; i++) {
    const l = lines[i].trim();
    if (!l) continue;
    const parts = l.split(',');
    if (parts.length >= 4) {
      const idStr = String(parts[0]).padStart(5, '0');
      stations.push({
        id: idStr,
        operatorId: idStr.substring(0, 2),
        tollId: idStr.substring(2, 5),
        name: parts[1],
        lat: parseFloat(parts[2]),
        lon: parseFloat(parts[3]),
      });
    }
  }

  const candidates = [];
  stations.forEach(s => {
    let minDist = Infinity;
    let minIndex = -1;
    for (let i = 0; i < polylineCoords.length; i++) {
      const d = distKm(s.lat, s.lon, polylineCoords[i][0], polylineCoords[i][1]);
      if (d < minDist) { minDist = d; minIndex = i; }
    }
    if (minDist < 2) {
      candidates.push({ ...s, polyIndex: minIndex });
    }
  });
  candidates.sort((a, b) => a.polyIndex - b.polyIndex);
  
  const passages = candidates.map(c => ({
    toll: { operatorId: c.operatorId, tollId: c.tollId },
    passageDate: new Date().toISOString()
  }));

  try {
      console.log(`Sending ${passages.length} passages to Ulys...`);
      const res = await axios.post('https://api-ulys.azure-api.net/tollstation/v1/rate', {
        vehicleCategory: "2", paymentOption: 2, tollPassages: passages
      });
      console.log(JSON.stringify(res.data, null, 2));
  } catch(e) {
      console.log(e.response ? e.response.data : e.message);
  }
}
bulkRateTest();