api.service.ts 3 KB
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import { Injectable } from '@angular/core';

export interface RawData {
  index: string[];
  values: number[];
}

@Injectable({
  providedIn: 'root'
})
export class ApiService {

  constructor() { }

  // Read input data
  async readFile(): Promise<RawData> {
    const response = await fetch('http://127.0.0.1:5000/read-data');
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    const temp = await response.json();
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    const index = temp.index;
    const values = temp.values;
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    return {index, values};
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  }

// Split data into windows and normalize
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  async createWindows(parameters): Promise<any> {
    const postData = {parameters};
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    const response = await fetch('http://127.0.0.1:5000/create-windows', {
      method: 'POST',
      headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json'
      },
      body: JSON.stringify(postData)
    });
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    return await response.json();
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  }

// Generate LSH-tables by hashing each window
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  async initialize(query): Promise<any> {
    const response = await fetch('http://127.0.0.1:5000/initialize', {
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      method: 'POST',
      headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json'
      },
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      body: new Blob( [ JSON.stringify({query}) ], { type: 'text/plain' } )
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    });
    return await response.json();
  }

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  // Update
  async update(query, hashFunctions, parameters): Promise<any> {
    const response = await fetch('http://127.0.0.1:5000/update', {
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      method: 'POST',
      headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json'
      },
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      body: new Blob( [ JSON.stringify({query, hash_functions: hashFunctions, parameters}) ], { type: 'text/plain' } )
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    });
    return await response.json();
  }

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  async getQueryWindow(window) {
    const response = await fetch('http://127.0.0.1:5000/query', {
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      method: 'POST',
      headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json'
      },
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      body: JSON.stringify({window})
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    });
    return await response.json();
  }

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  async getWindow(indices: number[]) {
    const response = await fetch('http://127.0.0.1:5000/window', {
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      method: 'POST',
      headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json'
      },
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      body: JSON.stringify({indices})
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    });
    return await response.json();
  }

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  async getAverageProgressWindows(windows): Promise<number[][]> {
    const response = await fetch('http://127.0.0.1:5000/average-progress', {
      method: 'POST',
      headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({windows})
    });
    return await response.json();
  }

  async getAverageTableWindows(windows): Promise<number[][]> {
    const response = await fetch('http://127.0.0.1:5000/average-table', {
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      method: 'POST',
      headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({windows})
    });
    return await response.json();
  }
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}