/**
 * Simple Data Export Verification Test
 * 
 * Tests all data export API endpoints with real database data
 * Run: mocha tests/test_export_verify_endpoints.js --timeout 60000
 */

const path = require('path');
const crypto = require('crypto');

const args = process.argv.slice(2);
let envFile = './environment.env';
for (let i = 0; i < args.length; i++) {
  if (args[i] === '--env' && args[i + 1]) {
    envFile = args[i + 1];
    i++;
  }
}

require('dotenv').config({ path: path.resolve(process.cwd(), envFile) });

const { expect } = require('chai');
const axios = require('axios');
const bcrypt = require('bcryptjs');
const https = require('https');
const { ObjectId } = require('mongodb');
const moment = require('moment');

const { Job, App, AppFile, AppDetail, User, Pilot, Vehicle } = require('../model');
const ApiKey = require('../model/api_key');
const { ApiKeyServices, ExportUnits } = require('../helpers/constants');
const dbConnect = require('../helpers/db/connect');

const BASE_URL = `https://localhost:${process.env.AGM_PORT || process.env.PORT || 4100}`;
const httpClient = axios.create({
  baseURL: BASE_URL,
  httpsAgent: new https.Agent({ rejectUnauthorized: false })
});

describe('Data Export API - Endpoint Verification', function() {
  this.timeout(60000);

  let testUserId, testJobId, testAppId, testFileId, testApiKey;
  let testClientId;

  before(async function() {
    console.log('\n🔧 Setting up test data...');
    await dbConnect();

    // Create users
    const adminUser = new User({
      username: `admin_${Date.now()}`,
      email: `admin_${Date.now()}@test.com`,
      passwordHash: 'hash',
      status: 'active',
      role: 'admin',
      kind: 'REGULAR'
    });
    await adminUser.save();
    testUserId = adminUser._id;

    const clientUser = new User({
      username: `client_${Date.now()}`,
      email: `client_${Date.now()}@test.com`,
      passwordHash: 'hash',
      status: '3',
      role: 'client',
      kind: 'REGULAR'
    });
    await clientUser.save();
    testClientId = clientUser._id;

    // Create pilot and vehicle
    const pilot = new Pilot({ name: `Pilot${Date.now()}`, licenseNum: 'TEST001', active: true });
    await pilot.save();

    const vehicle = new Vehicle({ name: `Aircraft${Date.now()}`, tailNumber: `N${Math.random().toString().slice(2,7)}`, active: true });
    await vehicle.save();

    // Create Job
    const job = new Job({
      _id: Math.floor(Math.random() * 900000) + 100000,
      name: `Job_${Date.now()}`,
      orderNumber: String(Math.floor(Math.random() * 10000)),
      byPuid: testUserId,
      client: testClientId,
      operator: pilot._id,
      vehicle: vehicle._id,
      status: 0,
      swathWidth: 12,
      measureUnit: false,
      sprayAreas: [{
        properties: { name: 'Area1', appRate: 50, area: 10 },
        geometry: { type: 'Polygon', coordinates: [[[-50, -30], [-50, -20], [-40, -20], [-40, -30], [-50, -30]]] }
      }]
    });
    await job.save();
    testJobId = job._id;

    // Create App (session)
    const app = new App({
      jobId: testJobId,
      fileName: `session_${Date.now()}.log`,
      fileSize: 2048,
      status: 3,
      totalFlightTime: 3600,
      totalSprayTime: 2400,
      totalTurnTime: 1200,
      totalSprayed: 5.0,
      totalSprayMat: 250,
      totalSprayMatUnit: 1,
      avgSpraySpeed: 40,
      markedDelete: false
    });
    await app.save();
    testAppId = app._id;

    // Create AppFile
    const appFile = new AppFile({
      appId: testAppId,
      name: `file_${Date.now()}.log`,
      agn: 1,
      meta: {
        areaOrZone: 'Main Area',
        sprCoverage: [100, 5.0],
        appRate: 50,
        appRateUnitStr: 'L/ha',
        fcName: 'Controller1',
        sprOnLag: 0.5,
        sprOffLag: 0.3,
        pulsesPerLit: 10,
        operator: 'Test Pilot',
        matType: 'wet'
      }
    });
    await appFile.save();
    testFileId = appFile._id;

    // Create AppDetail records
    const baseTime = moment().unix();
    const records = [];
    for (let i = 0; i < 10; i++) {
      records.push({
        fileId: testFileId,
        gpsTime: baseTime + (i * 10),
        lat: 40.71 + (i * 0.0001),
        lon: -74.00 + (i * 0.0001),
        utmX: 583960 + (i * 10),
        utmY: 4506721 + (i * 10),
        alt: 100 + (i * 2),
        grSpeed: 35 + (i * 0.5),
        head: 45,
        xTrack: 0.5,
        llnum: 1,
        stdHdop: 0.8,
        satsIn: 12,
        tslu: 0,
        calcodeFreq: 0,
        sprayStat: i === 0 ? 3 : (i % 2 === 0 ? 0 : 1),
        lminApp: i % 2 === 0 ? 0 : 45,
        lminReq: 45,
        lhaReq: 50,
        swath: 12,
        psi: 2.5,
        rpm: 1800,
        windSpd: 2.5,
        windDir: 180,
        temp: 22,
        humid: 65
      });
    }
    await AppDetail.insertMany(records);

    // Create API key
    const plainApiKey = crypto.randomBytes(32).toString('hex');
    const prefix = plainApiKey.substring(0, 8);
    const keyHash = await bcrypt.hash(plainApiKey, 10);

    const apiKey = new ApiKey({
      owner: testUserId,
      label: `key_${Date.now()}`,
      prefix,
      keyHash,
      service: ApiKeyServices.DATA_EXPORT,
      active: true
    });
    await apiKey.save();
    testApiKey = plainApiKey;

    console.log('✅ Test data ready\n');
  });

  after(async function() {
    console.log('\n🧹 Cleaning up...');
    try {
      await AppDetail.deleteMany({ fileId: testFileId });
      await AppFile.deleteOne({ _id: testFileId });
      await App.deleteOne({ _id: testAppId });
      await Job.deleteOne({ _id: testJobId });
      await User.deleteMany({ _id: { $in: [testUserId, testClientId] } });
      console.log('✅ Cleaned up\n');
    } catch (err) {
      console.error('Cleanup error:', err.message);
    }
  });

  it('✅ GET /api/v1/jobs/:jobId/sessions - returns session summary', async function() {
    const res = await httpClient.get(`/api/v1/jobs/${testJobId}/sessions`, {
      headers: { 'X-API-Key': testApiKey }
    });

    expect(res.status).to.equal(200);
    expect(res.data.data).to.be.an('array').with.length.greaterThan(0);
    
    const session = res.data.data[0];
    expect(session.totalFlightTime_s).to.exist;
    expect(session.totalSprayed_ha).to.exist;
    expect(session.avgSpraySpeed_ms).to.exist;
    
    console.log(`  ✅ Sessions endpoint: ${res.data.data.length} session(s)`);
    console.log(`     - totalFlightTime_s: ${session.totalFlightTime_s}s`);
    console.log(`     - avgSpraySpeed_ms: ${session.avgSpraySpeed_ms} m/s`);
  });

  it('✅ GET /api/v1/jobs/:jobId/sessions/:fileId/records - returns GPS trace', async function() {
    const res = await httpClient.get(
      `/api/v1/jobs/${testJobId}/sessions/${testFileId}/records`,
      { headers: { 'X-API-Key': testApiKey }, params: { limit: 100 } }
    );

    expect(res.status).to.equal(200);
    expect(res.data.data).to.be.an('array').with.length.greaterThan(0);

    const record = res.data.data[0];
    expect(record.gpsTime).to.exist;
    expect(record.lat).to.exist;
    expect(record.lon).to.exist;
    
    // Verify sprayStat=3 is excluded
    const hasSprying3 = res.data.data.some(r => r.sprayStat === 3);
    expect(hasSprying3).to.be.false;

    console.log(`  ✅ Records endpoint: ${res.data.data.length} records`);
    console.log(`     - sprayStat=3 properly filtered`);
  });

  it('✅ GET /api/v1/jobs/:jobId/areas - returns GeoJSON areas', async function() {
    const res = await httpClient.get(`/api/v1/jobs/${testJobId}/areas`, {
      headers: { 'X-API-Key': testApiKey }
    });

    expect(res.status).to.equal(200);
    expect(res.data.type).to.equal('FeatureCollection');
    expect(res.data.features).to.be.an('array').with.length.greaterThan(0);

    const feature = res.data.features[0];
    expect(feature.type).to.equal('Feature');
    expect(feature.properties).to.exist;

    console.log(`  ✅ Areas endpoint: ${res.data.features.length} features`);
  });

  it('✅ POST /api/v1/jobs/:jobId/export - triggers export', async function() {
    const res = await httpClient.post(
      `/api/v1/jobs/${testJobId}/export`,
      { format: 'csv', interval: null, units: ExportUnits.METRIC },
      { headers: { 'X-API-Key': testApiKey } }
    );

    expect(res.status).to.equal(202);
    expect(res.data.exportId).to.exist;
    expect(res.data.status).to.equal('pending');
    expect(res.data.units).to.equal(ExportUnits.METRIC);

    this.exportId = res.data.exportId;
    console.log(`  ✅ Export triggered: ${res.data.exportId}`);
  });

  it('✅ GET /api/v1/exports/:exportId - polls status', async function() {
    const exportId = this.exportId;
    if (!exportId) { console.log('  ⏭️ Skipping (no exportId)'); this.skip(); }

    let status = 'pending';
    for (let i = 0; i < 30 && ['pending', 'processing'].includes(status); i++) {
      const res = await httpClient.get(
        `/api/v1/exports/${exportId}`,
        { headers: { 'X-API-Key': testApiKey } }
      );

      expect(res.data.status).to.be.oneOf(['pending', 'processing', 'ready', 'error']);
      status = res.data.status;
      if (['pending', 'processing'].includes(status)) await new Promise(r => setTimeout(r, 1000));
    }

    expect(status).to.be.oneOf(['ready', 'error']);
    this.exportId = exportId;
    console.log(`  ✅ Export status: ${status}`);
  });

  it('✅ GET /api/v1/exports/:exportId/download - downloads file', async function() {
    const exportId = this.exportId;
    if (!exportId) { console.log('  ⏭️ Skipping'); this.skip(); }

    try {
      const res = await httpClient.get(
        `/api/v1/exports/${exportId}/download`,
        { headers: { 'X-API-Key': testApiKey }, responseType: 'text' }
      );

      expect(res.status).to.equal(200);
      expect(res.data).to.be.a('string').with.length.greaterThan(0);

      const lines = res.data.split('\n');
      const headers = lines[0].split(',');
      expect(headers.length).to.be.greaterThan(0);

      console.log(`  ✅ Downloaded: ${lines.length} lines, ${headers.length} columns`);
    } catch (err) {
      if (err.response?.status === 404) {
        console.log('  ℹ️  Export not ready');
        this.skip();
      } else {
        throw err;
      }
    }
  });

  it('✅ Authorization - rejects invalid key', async function() {
    try {
      await httpClient.get(`/api/v1/jobs/${testJobId}/sessions`, {
        headers: { 'X-API-Key': 'invalid' }
      });
      expect.fail('Should reject invalid key');
    } catch (err) {
      expect(err.response.status).to.equal(401);
      console.log(`  ✅ Invalid key rejected (401)`);
    }
  });
});