const request = require('request');
const utils = require('../utils.js');
const { db } = require('../../src/databases/databases.js');
const getHash = require('../../src/utils/getHash.js');

function dbSponsorTimesAdd(db, videoID, startTime, endTime, UUID, category) {
  const votes = 0,
    userID = 0,
    timeSubmitted = 0,
    views = 0,
    shadowHidden = 0,
    hashedVideoID = `hash_${UUID}`;
  db.exec(`INSERT INTO
    sponsorTimes (videoID, startTime, endTime, votes, UUID,
    userID, timeSubmitted, views, category, shadowHidden, hashedVideoID)
  VALUES
    ('${videoID}', ${startTime}, ${endTime}, ${votes}, '${UUID}',
    '${userID}', ${timeSubmitted}, ${views}, '${category}', ${shadowHidden}, '${hashedVideoID}')
  `);
}

function dbSponsorTimesSetByUUID(db, UUID, startTime, endTime) {
  db.prepare('run', `UPDATE sponsorTimes SET startTime = ?, endTime = ? WHERE UUID = ?`, [startTime, endTime, UUID]);
}

function dbSponsorTimesCompareExpect(db, expect) {
  for (let i=0, len=expect.length; i<len; i++) {
    const expectSeg = expect[i];
    let seg = db.prepare('get', "SELECT startTime, endTime FROM sponsorTimes WHERE UUID = ?", [expectSeg.UUID]);
    if ('removed' in expect) {
      if (expect.removed === true && seg.votes === -2) {
        return;
      }
      else {
        return `${expectSeg.UUID} doesnt got removed`;
      }
    }
    if (seg.startTime !== expectSeg.startTime) {
      return `${expectSeg.UUID} startTime is incorrect. seg.startTime is ${seg.startTime} expected ${expectSeg.startTime}`;
    }
    if (seg.endTime !== expectSeg.endTime) {
      return `${expectSeg.UUID} endTime is incorrect. seg.endTime is ${seg.endTime} expected ${expectSeg.endTime}`;
    }
  }
  return;
}

describe('segmentShift', function() {
  const privateVipUserID = 'VIPUser-segmentShift';
  const vipUserID = getHash(privateVipUserID);
  const baseURL = utils.getbaseURL();
  
  before(function(done) {
    // startTime and endTime get set in beforeEach for consistency
    dbSponsorTimesAdd(db, 'vsegshift01', 0, 0, 'vsegshifttest01uuid01', 'intro');
    dbSponsorTimesAdd(db, 'vsegshift01', 0, 0, 'vsegshifttest01uuid02', 'sponsor');
    dbSponsorTimesAdd(db, 'vsegshift01', 0, 0, 'vsegshifttest01uuid03', 'interaction');
    dbSponsorTimesAdd(db, 'vsegshift01', 0, 0, 'vsegshifttest01uuid04', 'outro');
    db.exec(`INSERT INTO vipUsers (userID) VALUES ('${vipUserID}')`);
    done();
  });
  
  beforeEach(function(done) {
    // resetting startTime and endTime to reuse them
    dbSponsorTimesSetByUUID(db, 'vsegshifttest01uuid01',   0,  10);
    dbSponsorTimesSetByUUID(db, 'vsegshifttest01uuid02',  60,  90);
    dbSponsorTimesSetByUUID(db, 'vsegshifttest01uuid03',  40,  45);
    dbSponsorTimesSetByUUID(db, 'vsegshifttest01uuid04', 120, 140);
    done();
  });
  
  it('Reject none VIP user', function(done) {
    request.post(`${baseURL}/api/segmentShift`, {
      json: {
        videoID: 'vsegshift01',
        userID: 'segshift_randomuser001',
        startTime: 20,
        endTime: 30,
      }
    }, (err, res, body) => {
      if (err) return done(err);
      return done(res.statusCode === 403 ? undefined : res.statusCode);
    });
  });
  
  it('Shift is outside segments', function(done) {
    request.post(`${baseURL}/api/segmentShift`, {
      json: {
        videoID: 'vsegshift01',
        userID: privateVipUserID,
        startTime: 20,
        endTime: 30,
      }
    }, (err, res, body) => {
      if (err) return done(err);
      if (res.statusCode !== 200) return done(`Status code was ${res.statusCode}`);
      const expect = [
        {
          UUID: 'vsegshifttest01uuid01',
          startTime: 0,
          endTime: 10,
        },
        {
          UUID: 'vsegshifttest01uuid02',
          startTime: 50,
          endTime: 80,
        },
        {
          UUID: 'vsegshifttest01uuid03',
          startTime: 30,
          endTime: 35,
        },
        {
          UUID: 'vsegshifttest01uuid04',
          startTime: 110,
          endTime: 130,
        },
      ];
      done(dbSponsorTimesCompareExpect(db, expect));
    });
  });
  
  it('Shift is inside segment', function(done) {
    request.post(`${baseURL}/api/segmentShift`, {
      json: {
        videoID: 'vsegshift01',
        userID: privateVipUserID,
        startTime: 65,
        endTime: 75,
      }
    }, (err, res, body) => {
      if (err) return done(err);
      if (res.statusCode !== 200) return done(`Status code was ${res.statusCode}`);
      const expect = [
        {
          UUID: 'vsegshifttest01uuid01',
          startTime: 0,
          endTime: 10,
        },
        {
          UUID: 'vsegshifttest01uuid02',
          startTime: 60,
          endTime: 80,
        },
        {
          UUID: 'vsegshifttest01uuid03',
          startTime: 40,
          endTime: 45,
        },
        {
          UUID: 'vsegshifttest01uuid04',
          startTime: 110,
          endTime: 130,
        },
      ];
      done(dbSponsorTimesCompareExpect(db, expect));
    });
  });
  
  it('Shift is overlaping startTime of segment', function(done) {
    request.post(`${baseURL}/api/segmentShift`, {
      json: {
        videoID: 'vsegshift01',
        userID: privateVipUserID,
        startTime: 32,
        endTime: 42,
      }
    }, (err, res, body) => {
      if (err) return done(err);
      if (res.statusCode !== 200) return done(`Status code was ${res.statusCode}`);
      const expect = [
        {
          UUID: 'vsegshifttest01uuid01',
          startTime: 0,
          endTime: 10,
        },
        {
          UUID: 'vsegshifttest01uuid02',
          startTime: 50,
          endTime: 80,
        },
        {
          UUID: 'vsegshifttest01uuid03',
          startTime: 32,
          endTime: 35,
        },
        {
          UUID: 'vsegshifttest01uuid04',
          startTime: 110,
          endTime: 130,
        },
      ];
      done(dbSponsorTimesCompareExpect(db, expect));
    });
  });

  it('Shift is overlaping endTime of segment', function(done) {
    request.post(`${baseURL}/api/segmentShift`, {
      json: {
        videoID: 'vsegshift01',
        userID: privateVipUserID,
        startTime: 85,
        endTime: 95,
      }
    }, (err, res, body) => {
      if (err) return done(err);
      if (res.statusCode !== 200) return done(`Status code was ${res.statusCode}`);
      const expect = [
        {
          UUID: 'vsegshifttest01uuid01',
          startTime: 0,
          endTime: 10,
        },
        {
          UUID: 'vsegshifttest01uuid02',
          startTime: 60,
          endTime: 85,
        },
        {
          UUID: 'vsegshifttest01uuid03',
          startTime: 40,
          endTime: 45,
        },
        {
          UUID: 'vsegshifttest01uuid04',
          startTime: 110,
          endTime: 130,
        },
      ];
      done(dbSponsorTimesCompareExpect(db, expect));
    });
  });
  
  it('Shift is overlaping segment', function(done) {
    request.post(`${baseURL}/api/segmentShift`, {
      json: {
        videoID: 'vsegshift01',
        userID: privateVipUserID,
        startTime: 35,
        endTime: 55,
      }
    }, (err, res, body) => {
      if (err) return done(err);
      if (res.statusCode !== 200) return done(`Status code was ${res.statusCode}`);
      const expect = [
        {
          UUID: 'vsegshifttest01uuid01',
          startTime: 0,
          endTime: 10,
        },
        {
          UUID: 'vsegshifttest01uuid02',
          startTime: 40,
          endTime: 70,
        },
        {
          UUID: 'vsegshifttest01uuid03',
          startTime: 40,
          endTime: 45,
          removed: true,
        },
        {
          UUID: 'vsegshifttest01uuid04',
          startTime: 100,
          endTime: 120,
        },
      ];
      done(dbSponsorTimesCompareExpect(db, expect));
    });
  });
  
  
});