weaviate.service.copy.ts

import weaviate, { WeaviateClient, ApiKey } from 'weaviate-ts-client';
import { OpenAI } from 'openai';
import * as dotenv from 'dotenv';

dotenv.config();

export class EmbeddingService {
  private openai: OpenAI;

  constructor() {
    this.openai = new OpenAI({
      apiKey: process.env.OPENAI_API_KEY,
    });
  }

  /**
   * Generates embeddings for a given text using OpenAI's API
   * @param text The text to generate embeddings for
   * @returns Promise containing the embedding vector
   */
  async generateEmbedding(text: string): Promise<number[]> {
    try {
      const response = await this.openai.embeddings.create({
        model: 'text-embedding-ada-002',
        input: text,
      });

      return response.data[0].embedding;
    } catch (error) {
      throw new Error(`Failed to generate embedding: ${error.message}`);
    }
  }

  /**
   * Generates embeddings for multiple texts in batch
   * @param texts Array of texts to generate embeddings for
   * @returns Promise containing array of embedding vectors
   */
  async generateEmbeddings(texts: string[]): Promise<number[][]> {
    try {
      const response = await this.openai.embeddings.create({
        model: 'text-embedding-ada-002',
        input: texts,
      });

      return response.data.map((item) => item.embedding);
    } catch (error) {
      throw new Error(`Failed to generate embeddings: ${error.message}`);
    }
  }
}

// Initialize the client
const client: WeaviateClient = weaviate.client({
  scheme: 'http',
  host: 'localhost:8080', // or your Weaviate instance URL
  apiKey: new ApiKey('WVF5YThaHlkYwhGUSmCRgsX3tD5ngdN8pkih'),
});

export async function quickstart() {
  try {
    // 1. Create schema class for your data
    const schemaConfig = {
      class: 'Article',
      vectorizer: 'none', // Set to 'none' for custom vectors
      properties: [
        {
          name: 'title',
          dataType: ['text'],
        },
        {
          name: 'content',
          dataType: ['text'],
        },
      ],
    };

    // Create the schema class
    const classExists = await client.schema.exists(schemaConfig.class);
    if (!classExists) {
      await client.schema.classCreator().withClass(schemaConfig).do();
    }

    const embeddingService = new EmbeddingService();
    const embeddings = [
      [
        0.003552304, -0.0060118423, -0.0055779982, -0.01628384, 0.015200861,
        0.01869771, -0.013856921, 0.004824479, -0.01692319, -0.021007197,
        0.011462623, 0.027374597, -0.016048977, -0.018136648, 0.017484251,
        -0.001654643, 0.027139734, 0.0072350875, 0.010699318, -0.00814192,
        -0.021711787, 0.025012918, -0.0072807553, 0.0008693196, -0.013687299,
        -0.0052876812, 0.023016581, -0.030349528, 0.006824077, -0.013354575,
        0.01666223, -0.006406543, -0.010327452, -0.020302609, 0.00020397613,
        0.012943565, 0.006064034, -0.016427368, 0.011573531, -0.026957063,
        0.021763979, 0.014939901, -0.0043025613, -0.020824526, -0.026278568,
        0.020472232, -0.0013928686, -0.0064489488, -0.0059890086, 0.003061375,
        0.011175568, 0.0010479135, -0.04115323, -0.012728274, -0.013856921,
        0.0006552517, -0.017027574, 0.021985793, 0.032802545, -0.0067718853,
        0.010836322, 0.0016057132, 0.00076615927, 0.004543948, -0.010914609,
        0.0012640201, -0.002754748, 0.0213073, -0.0015257945, -0.0065141884,
        0.020198224, 0.0034218247, -0.009949061, -0.012408599, 0.034785833,
        0.006429377, -0.012167213, -0.0025981728, -0.0021855314, -0.00040203994,
        -0.00092395785, 0.013622059, 0.0032717732, 0.027948707, 0.015057333,
        0.02207713, 0.00070744345, 0.01902391, 0.00166606, -0.015383531,
        0.0057541453, 0.0044297785, 0.008742126, 0.0049973642, -0.03194138,
        0.032280624, 0.01373949, 0.007385139, 0.0054964484, -0.04287556,
        0.0011563745, -0.0038230491, -0.030610489, -0.011625722, -0.023642883,
        0.0050887, 0.020889767, 0.010236116, 0.018423704, 0.011841014,
        -0.00871603, 0.0037675952, 0.004403683, -0.030453913, -0.003350061,
        -0.010399215, 0.016101168, -0.01590545, 0.0032685113, -0.0194023,
        0.030949734, 0.034759738, 0.009792485, -0.01615336, 0.0047755493,
        0.03141946, -0.021020245, -0.033115692, 0.00052028697, -0.023003533,
        0.01570973, -0.0011433265, 0.0093358075, 0.023107918, -0.010477503,
        -0.0026944014, -0.0349946, -0.009922965, -0.009179232, -0.0057802415,
        0.007828769, 0.020328704, -0.018227985, -0.020537471, 0.011782298,
        0.030036379, -0.0015649383, -0.004837527, 0.00912704, 0.019324012,
        -0.007150276, -0.015018189, -0.00039266172, 0.02716583, -0.0010014301,
        0.0023796197, 0.0037512854, 0.0044428264, -0.006344565, 0.008089729,
        0.014470175, 0.013413291, -0.0070980843, -0.019128293, 0.021268157,
        0.026161138, 0.02818357, -0.0013830826, -0.0033794187, -0.02227285,
        -0.00814192, 0.038334873, -0.01692319, 0.005114796, -0.008820414,
        0.010014301, 0.016805759, -0.0034740164, -0.029905898, -0.009655482,
        0.0060346765, 0.0070132725, 0.03332446, -0.0033598468, 0.009113993,
        0.003849145, 0.0040024584, -0.008461595, -0.009296663, 0.00032293674,
        0.020720143, 0.029279597, 0.0007127442, -0.017823499, -0.6684725,
        -0.03721275, 0.019167436, 0.004658118, 0.008128872, 0.0037088795,
        0.015305244, -0.022338089, 0.012852229, 0.027818227, -0.0235385,
        -0.020615758, -0.0021871624, -0.0054442566, 0.0067457897,
        -0.00050560804, 0.015918497, -0.03212405, 0.0032603561, 0.021098534,
        -0.012167213, 0.019924218, -0.017145004, -0.025730556, -0.012349884,
        -0.004145986, -0.012963138, -0.0065794284, -0.014587607, 0.02010689,
        -0.0029472054, 0.006941509, 0.0053985887, 0.014404936, 0.03358542,
        -0.015383531, 0.015879354, 0.0067588375, -0.008866081, 0.01933706,
        -0.02760946, -0.008168016, -0.01616641, -0.007894009, 0.0007070357,
        0.00043262105, 0.0025883869, -0.010816749, 0.00963591, 0.014039593,
        -0.014548463, 0.007365567, -0.014626751, -0.008246304, 0.0051832977,
        -0.00031743213, 0.025182541, -0.00061039935, 0.018554183, -0.0050593424,
        -0.012362932, -0.00459614, -0.04611145, -0.0049288627, -0.016244696,
        0.02055052, 0.010947229, 0.008768221, -0.0047168336, -0.036377683,
        0.0067262175, 0.01597069, -0.023682028, 0.006403281, -0.0012713595,
        0.014209216, 0.0029455745, -0.0072350875, -0.012160689, -0.003284821,
        0.0144962715, -0.015409628, -0.009805534, -0.019676307, 0.013517675,
        -0.0116648665, -0.02995809, -0.016192505, -0.0021137677, 0.0008383307,
        0.017732162, 0.0010772713, -0.0046679038, -0.022090178, 0.0026128518,
        0.0010495444, 0.000513763, -0.0012338466, 0.012643462, -0.00456352,
        -0.00018746233, 0.003113567, 0.024660623, 0.009903393, 0.030245146,
        -0.009949061, 0.0047233575, 0.008128872, 0.013178429, -0.028522816,
        -0.0063347793, 0.0066772876, -0.016375177, 0.015853258, -0.0148616135,
        -0.027322404, -0.0015192706, 0.009531527, 0.00769829, 0.015474867,
        0.03282864, -0.02150302, 0.0013398612, 0.0011123377, -0.010164352,
        0.006112964, -0.0067914575, -0.01539658, -0.051826455, -0.023447163,
        0.0017565801, -0.011482195, 0.005098486, -0.011612674, 0.0153704835,
        -0.021137677, 0.0011971493, -0.009205328, 0.008128872, 0.0203548,
        -0.026670007, -0.009622863, -0.0044819703, 0.016596992, -0.038204394,
        -0.026878774, -0.006595738, 0.006602262, -0.012910945, 0.01084937,
        -0.0038621929, -0.0016481191, -0.013021853, -0.0019082625, -0.00871603,
        0.0065370225, -0.016048977, -0.014130929, -0.02283391, 0.0023404758,
        -0.000042660675, 0.031315077, -0.008161492, 0.0011009207, -0.029540556,
        0.0098446775, -0.023747267, 0.025456548, -0.03783905, -0.027374597,
        0.020250417, 0.0032065334, -0.008663838, -0.009466287, -0.011984541,
        -0.0006250783, -0.025039013, 0.009531527, 0.010092588, -0.013687299,
        -0.016570896, 0.0071828957, 0.0042471075, -0.0024318115, 0.029723227,
        0.0118083935, 0.015553155, 0.042849462, -0.011717058, 0.010288307,
        0.004615712, 0.023551548, -0.009609815, 0.0060248906, -0.03269816,
        0.020981101, -0.027635556, 0.014300552, 0.009355379, 0.030245146,
        0.02557398, 0.020224322, 0.022377232, 0.00871603, 0.006435901,
        -0.03429001, 0.0010674853, -0.014809422, 0.018280176, -0.0032522012,
        0.01831932, -0.006367399, -0.00026727907, -0.015044285, 0.011841014,
        0.00034984812, -0.009538051, -0.013948257, -0.03739542, 0.012284644,
        0.0035914478, 0.009022657, -0.016179457, -0.0035066362, 0.015983738,
        0.027400693, 0.008011441, 0.022481617, 0.024765007, -0.030871447,
        -0.012349884, 0.007463427, -0.0037317134, 0.0044199927, 0.023486309,
        0.009387999, 0.031341173, -0.0075090947, 0.015735826, -0.0064750444,
        -0.02028956, 0.0061977757, 0.022246752, -0.018945621, 0.025078157,
        -0.0033728948, 0.043293096, 0.016022881, -0.01705367, 0.016518703,
        -0.02143778, -0.0073068514, -0.008592075, -0.006732742, 0.0049843164,
        -0.027792132, -0.0054573044, -0.010627555, 0.013530723, 0.020811478,
        0.0144962715, 0.01864552, 0.0036436396, -0.008128872, 0.006948033,
        -0.0072546597, -0.020119937, 0.008063632, 0.0015469975, -0.00052191794,
        -0.022468569, -0.0050560804, 0.011697486, -0.030845352, 0.03823049,
        0.024008226, 0.012526031, -0.011906253, 0.022037985, 0.028287953,
        -0.0023828817, -0.033820283, 0.007620002, 0.02042004, -0.0029162166,
        -0.023695076, -0.025730556, 0.005718264, -0.030401722, -0.01007954,
        0.0014042855, 0.017862642, 0.011619198, 0.004570044, -0.0078809615,
        0.024086514, 0.05221789, 0.0026242686, 0.0059759608, -0.02920131,
        0.009785961, -0.008122348, 0.008996561, -0.020850623, 0.020707095,
        -0.011854062, -0.014052641, 0.011919301, -0.014731134, -0.031158501,
        -0.0008375152, -0.003074423, -0.0037317134, 0.011390859, 0.0030010282,
        0.00072905415, -0.004276465, 0.009374951, 0.021424731, 0.012617366,
        0.0019098935, -0.027766036, -0.020054698, 0.018775998, 0.090239614,
        0.011045089, -0.011749678, 0.009283615, -0.014104833, -0.017066717,
        -0.0025965418, -0.013622059, 0.025091205, -0.0027889991, -0.02296439,
        0.013922161, 0.011136425, -0.018997813, 0.03569919, 0.00061039935,
        -0.008990036, -0.02747898, 0.0026161138, -0.025273876, 0.0012574961,
        0.01211502, -0.0002497459, 0.002554136, 0.015096477, -0.044519603,
        0.03543823, 0.02334278, -0.005868315, -0.009107469, 0.013100141,
        -0.010360071, 0.005134368, 0.002296439, -0.004142724, 0.04211878,
        0.0065141884, 0.038700216, -0.0055323304, -0.0011400646, 0.010966801,
        0.014665894, -0.00084648567, -0.025365213, -0.0047592395, -0.030271241,
        0.012871802, 0.0330635, -0.01889343, -0.045067616, -0.0041981777,
        -0.004866885, -0.029227406, 0.0013439388, 0.0057965512, 0.02626552,
        0.0075743343, 0.009883821, 0.008376783, 0.0023160109, 0.0029406815,
        -0.0049516964, -0.01971545, 0.007822245, -0.018136648, -0.030140761,
        0.002294808, 0.018227985, -0.013387196, 0.0057932893, 0.014639799,
        0.00054638286, -0.039535284, -0.02582189, 0.027061446, 0.01851504,
        0.03460316, 0.0016399641, -0.0060509862, 0.012304216, 0.007169848,
        -0.026043706, 0.001035681, -0.025430452, 0.018332368, -0.009309712,
        -0.01570973, 0.0027465932, -0.0026634126, 0.01933706, -0.0028705487,
        0.025482643, 0.02818357, 0.01424836, 0.012669559, 0.016101168,
        -0.008181064, 0.0020256941, -0.0003618767, -0.01851504, 0.00402203,
        -0.016505655, -0.00817454, -0.021516068, 0.0064946166, -0.0072481357,
        0.01838456, 0.0104253115, -0.00080244883, -0.010594934, 0.0016676909,
        0.0032929762, 0.012891374, -0.024882438, 0.0064652585, 0.004240583,
        0.014770278, 0.00052966515, -0.017732162, -0.007867913, -0.006070558,
        -0.026774392, 0.02201189, 0.0128261335, -0.010379643, 0.035125077,
        -0.002810202, -0.0021463875, -0.029618844, 0.0042112255, -0.010921133,
        0.008905225, -0.0086116465, -0.025404356, -0.015814114, -0.011149473,
        -0.016701374, -0.0062173475, -0.007195944, -0.02175093, -0.0007820614,
        0.0035294702, 0.007378615, -0.009642434, -0.0050887, -0.03632549,
        -0.0032407844, -0.0012632045, -0.016257744, 0.017510347, -0.010086064,
        0.0074699507, -0.021398636, -0.01661004, -0.012447744, -0.022285897,
        0.024164801, 0.011919301, 0.044858847, 0.020511376, 0.0604381,
        0.0010495444, 0.02805309, 0.025417404, -0.00025341564, -0.0022034724,
        0.019063054, 0.0067588375, -0.007365567, 0.0020697308, 0.019154388,
        0.0047331434, 0.04712919, -0.0010984741, 0.02652648, 0.015748873,
        0.00804406, -0.0037154034, -0.027870419, -0.034316104, -0.025587028,
        0.014705039, 0.009414095, 0.021268157, -0.0114430515, 0.00075433456,
        0.030506104, 0.0054409946, 0.02283391, 0.008161492, 0.019324012,
        -0.010216544, -0.00022568874, 0.01736682, -0.0042536315, -0.030427817,
        -0.014665894, -0.035125077, 0.015057333, 0.022090178, 0.018632472,
        0.016375177, 0.0072742314, 0.009642434, 0.0019278345, 0.016636135,
        -0.01488771, -0.011821441, -0.0031217218, -0.027844323, -0.011964969,
        -0.035386037, -0.007717862, -0.02582189, 0.016884046, -0.011677914,
        -0.020472232, 0.022625143, -0.0017565801, -0.05313125, 0.013361099,
        0.009564146, 0.03168042, -0.0022524022, 0.017014526, 0.030480009,
        0.011508291, -0.03194138, 0.023107918, 0.017953977, -0.0006915413,
        0.012049781, 0.023134014, -0.023003533, -0.010947229, 0.010105636,
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        -0.00612275, -0.022064082, 0.016505655, 0.009564146, 0.015344388,
        -0.018997813, -0.0074308068, -0.002307856, -0.0029684084, -0.002813464,
        0.015996786, -0.0153704835, 0.0150834285, 0.003539256, 0.0026634126,
        0.000288482, -0.02169874, 0.0028999066, 0.028809872, -0.015761923,
        -0.005852005, -0.011188616, 0.001538027, 0.0023698336, -0.0072155157,
        -0.0038915507, 0.005127844, -0.016375177, -0.0072285635, 0.017379869,
        -0.00028623937, -0.02150302, 0.00033231496, -0.008148444, -0.01692319,
        0.0076852418, 0.011045089, -0.01820189, -0.014117881, -0.004615712,
        0.0028999066, 0.0032652493, -0.0024171325, 0.03663864, -0.01736682,
        0.01539658, 0.0375259, -0.0073198993, -0.01173663, 0.01533134,
        -0.0046972614, -0.019050006, 0.01126038, -0.0026944014, 0.0086116465,
        0.011332144, -0.005626928, -0.016322983, -0.021007197, 0.00082691375,
        0.023042677, -0.014183121, 0.002072993, -0.0031902236, -0.0077309096,
        -0.020393943, 0.012167213, -0.013341527, 0.00020703425, -0.0076917657,
        -0.033037405, 0.027687747, -0.004097056, 0.00970115, -0.013517675,
        0.0065565943, -0.006373923, -0.038908985, -0.008839985, -0.003816525,
        0.016766615, 0.007463427, -0.015174764, -0.002030587, 0.013622059,
        -0.026748296, -0.015748873, -0.009968633, -0.015070381, -0.024399664,
        0.00966853, -0.0026210067, -0.014130929, -0.003849145, 0.0021039818,
        -0.016114216, -0.0022377232, -0.025743604, 0.011710534, 0.005346397,
        0.024099562, 0.02462148, -0.0140656885, -0.030714871, -0.02092891,
        -0.02634381, -0.0131197125, -0.006344565, 0.013002281, -0.017601684,
        0.0031722826, 0.018436752, 0.016009834, 0.008194112, -0.019310964,
        -0.009596766, -0.0115931025, 0.0032261054, -0.012304216, -0.013400244,
        0.010164352, 0.0033370128, -0.01653175, -0.0059596505, -0.005871577,
        0.0009223269, 0.030062474, -0.0077896253, 0.005835695, 0.0027677962,
        -0.0012110127, 0.0024040847, 0.016466511, 0.015683634, -0.0051474157,
        -0.013106665, 0.009922965, -0.007587382, -0.012088925, 0.017901786,
        0.014678942, 0.01730158, -0.0018185579, -0.017862642, -0.005365969,
        -0.008957417, -0.0037773813, 0.030323433, -0.021659596, -0.00019582117,
        0.01781045, 0.011834489, 0.00020244709, -0.029905898, 0.012382504,
        0.004589616, -0.021476924, 0.012010637, -0.011182092, 0.018580278,
        0.0018707496, -0.0018821666, -0.009016133, -0.0032049024, -0.0050201984,
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        0.022025617, -0.011985908, 0.007596892, 0.034011524, 0.020200215,
        -0.012938876, 0.00908003, -0.025797218, 0.005939266, 0.0024679832,
        -0.014281083, -0.0019646555, -0.023166493, -0.019435158, -0.007999553,
        0.0117711555, -0.010596724, 0.07790169, 0.0104960585, -0.0015032719,
        0.0019713666, -0.016428614, 0.004546726, 0.030333878, 0.015341426,
        -0.015985684, -0.021918241, -0.011784578, 0.018079529, -0.03519267,
        -0.01251608, -0.013482469, 0.018965384, -0.004040043, 0.023300713,
        -0.016428614, -0.013462336, 0.001063699, 0.0046406807, 0.016737321,
        0.0071808076, -0.017556068, 0.010677257, 0.0038353566, -0.0072680507,
        0.010724233, -0.025273757, 0.020146526, -0.0011098374, -0.051245462,
        -0.021180026, 0.005117164, 0.0015116606, 0.0061473083, -0.024656342,
        -0.015435381, -0.009583358, 0.014039485, 0.028374257, -0.024065772,
        -0.027246801, -0.024871096, -0.006553326, 0.00060860696, -0.0051641413,
        -0.0022884628,
      ],
    ];

    // 2. Add data with custom vectors
    const articles = [
      {
        title: 'First Article',
        content: 'This is the content of my first article about AI.',
        vector: embeddings[0],
      },
      {
        title: 'Second Article',
        content: 'Another article discussing machine learning concepts.',
        vector: embeddings[1],
      },
    ];

    // Import data
    for (const article of articles) {
      await client.data
        .creator()
        .withClassName('Article')
        .withProperties({
          title: article.title,
          content: article.content,
        })
        .withVector(article.vector)
        .do();
    }

    // 3. Search using vector
    // const searchQuery = 'machine learning';
    // const searchVector = await embeddingService.generateEmbedding(searchQuery);
    const searchVector = embeddings[0];
    const vectorResult = await client.graphql
      .get()
      .withClassName('Article')
      .withFields('title content')
      .withNearVector({
        vector: searchVector,
      })
      .withLimit(5)
      .do();

    console.log('Vector Search Results:', vectorResult.data.Get.Article);
  } catch (error) {
    console.error('Error:', error);
  } finally {
    // 4. Clean up by deleting the class
    try {
      // await client.schema.classDeleter().withClassName('Article').do();
      console.log('Successfully deleted Article class');
    } catch (deleteError) {
      console.error('Error deleting class:', deleteError);
    }
  }
}