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<h1><a href="../../index.html">All files</a> / <a href="index.html">src/services</a> news.service.ts</h1>
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<div class='fl pad1y space-right2'>
<span class="strong">48.86% </span>
<span class="quiet">Statements</span>
<span class='fraction'>43/88</span>
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<div class='fl pad1y space-right2'>
<span class="strong">13.04% </span>
<span class="quiet">Branches</span>
<span class='fraction'>3/23</span>
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<div class='fl pad1y space-right2'>
<span class="strong">60% </span>
<span class="quiet">Functions</span>
<span class='fraction'>3/5</span>
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<div class='fl pad1y space-right2'>
<span class="strong">48.86% </span>
<span class="quiet">Lines</span>
<span class='fraction'>43/88</span>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">/**
* News service for interacting with The News API
*/
import axios, { AxiosResponse } from 'axios';
import { NewsApiParams, NewsApiResponse, SingleArticleResponse, SourcesApiParams, SourcesApiResponse } from '../models/news.model';
import { newsApiConfig } from '../config/api.config';
import { logger } from '../utils/logger';
import { cacheService } from '../utils/cache';
/**
* Service for fetching news data from The News API
*/
export class NewsService {
/**
* Fetch top news articles based on provided parameters
* @param params Query parameters for the API request
* @returns Promise with the news API response
*/
async getTopNews(params: Omit<NewsApiParams, 'api_token'>): Promise<NewsApiResponse> {
try {
// Generate cache key based on params
const cacheKey = `top_news_${JSON.stringify(params)}`;
// Check if data is in cache
const cachedData = cacheService.get<NewsApiResponse>(cacheKey);
<span class="missing-if-branch" title="if path not taken" >I</span>if (cachedData) {
<span class="cstat-no" title="statement not covered" > logger.info('Returning cached top news');</span>
<span class="cstat-no" title="statement not covered" > return cachedData;</span>
}
// Combine parameters with API token and ensure English language
const queryParams: NewsApiParams = {
...params,
language: 'en', // Default to English language
api_token: newsApiConfig.apiToken
};
// Make request to external API
const url = `${newsApiConfig.baseUrl}${newsApiConfig.endpoints.top}`;
logger.info(`Fetching top news from: ${url}`);
const response: AxiosResponse<NewsApiResponse> = await axios.get(url, {
params: queryParams
});
// Cache the response data
const ttl = cacheService.getTTL('top');
cacheService.set(cacheKey, response.data, ttl);
logger.debug(`Cached top news data with TTL: ${ttl}s`);
return response.data;
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error('Error fetching top news:', error);</span>
<span class="cstat-no" title="statement not covered" > throw new Error(`Failed to fetch top news: ${error instanceof Error ? error.message : String(error)}`);</span>
}
}
/**
* Fetch all news articles based on provided parameters
* @param params Query parameters for the API request
* @returns Promise with the news API response
*/
async getAllNews(params: Omit<NewsApiParams, 'api_token'>): Promise<NewsApiResponse> {
try {
// Generate cache key based on params
const cacheKey = `all_news_${JSON.stringify(params)}`;
// Check if data is in cache
const cachedData = cacheService.get<NewsApiResponse>(cacheKey);
<span class="missing-if-branch" title="if path not taken" >I</span>if (cachedData) {
<span class="cstat-no" title="statement not covered" > logger.info('Returning cached all news');</span>
<span class="cstat-no" title="statement not covered" > return cachedData;</span>
}
// Combine parameters with API token and ensure English language
const queryParams: NewsApiParams = {
...params,
language: 'en', // Default to English language
api_token: newsApiConfig.apiToken
};
// Make request to external API
const url = `${newsApiConfig.baseUrl}${newsApiConfig.endpoints.all}`;
logger.info(`Fetching all news from: ${url}`);
const response: AxiosResponse<NewsApiResponse> = await axios.get(url, {
params: queryParams
});
// Cache the response data
const ttl = cacheService.getTTL('all');
cacheService.set(cacheKey, response.data, ttl);
logger.debug(`Cached all news data with TTL: ${ttl}s`);
return response.data;
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error('Error fetching all news:', error);</span>
<span class="cstat-no" title="statement not covered" > throw new Error(`Failed to fetch all news: ${error instanceof Error ? error.message : String(error)}`);</span>
}
}
/**
* Fetch similar news articles to a specific article by UUID
* @param uuid UUID of the article to find similar news for
* @param params Query parameters for the API request
* @returns Promise with the news API response
*/
<span class="fstat-no" title="function not covered" > async </span>getSimilarNews(uuid: string, params: Omit<NewsApiParams, 'api_token'>): Promise<NewsApiResponse> {
<span class="cstat-no" title="statement not covered" > try {</span>
// Validate UUID format
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (!uuid || !/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i.test(uuid)) {</span>
<span class="cstat-no" title="statement not covered" > throw new Error('Invalid UUID format');</span>
}
// Generate cache key based on UUID and params
const cacheKey = <span class="cstat-no" title="statement not covered" >`similar_news_${uuid}_${JSON.stringify(params)}`;</span>
// Check if data is in cache
const cachedData = <span class="cstat-no" title="statement not covered" >cacheService.get<NewsApiResponse>(cacheKey);</span>
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (cachedData) {</span>
<span class="cstat-no" title="statement not covered" > logger.info(`Returning cached similar news for UUID ${uuid}`);</span>
<span class="cstat-no" title="statement not covered" > return cachedData;</span>
}
// Combine parameters with API token and ensure English language
const queryParams: NewsApiParams = <span class="cstat-no" title="statement not covered" >{</span>
...params,
language: 'en', // Default to English language
api_token: newsApiConfig.apiToken
};
// Make request to external API
const url = <span class="cstat-no" title="statement not covered" >`${newsApiConfig.baseUrl}${newsApiConfig.endpoints.similar.replace('{uuid}', uuid)}`;</span>
<span class="cstat-no" title="statement not covered" > logger.info(`Fetching similar news for UUID ${uuid} from: ${url}`);</span>
const response: AxiosResponse<NewsApiResponse> = <span class="cstat-no" title="statement not covered" >await axios.get(url, { </span>
params: queryParams
});
// Cache the response data with longer TTL as similar articles rarely change
const ttl = <span class="cstat-no" title="statement not covered" >cacheService.getTTL('similar');</span>
<span class="cstat-no" title="statement not covered" > cacheService.set(cacheKey, response.data, ttl);</span>
<span class="cstat-no" title="statement not covered" > logger.debug(`Cached similar news data for UUID ${uuid} with TTL: ${ttl}s`);</span>
<span class="cstat-no" title="statement not covered" > return response.data;</span>
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error(`Error fetching similar news for UUID ${uuid}:`, error);</span>
<span class="cstat-no" title="statement not covered" > throw new Error(`Failed to fetch similar news: ${error instanceof Error ? error.message : String(error)}`);</span>
}
}
/**
* Fetch a specific news article by UUID
* @param uuid UUID of the article to retrieve
* @returns Promise with the single article response
*/
async getNewsByUuid(uuid: string): Promise<SingleArticleResponse> {
try {
// Validate UUID format
<span class="missing-if-branch" title="if path not taken" >I</span>if (!uuid || !/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i.test(uuid)) {
<span class="cstat-no" title="statement not covered" > throw new Error('Invalid UUID format');</span>
}
// Generate cache key based on UUID
const cacheKey = `news_article_${uuid}`;
// Check if data is in cache
const cachedData = cacheService.get<SingleArticleResponse>(cacheKey);
<span class="missing-if-branch" title="if path not taken" >I</span>if (cachedData) {
<span class="cstat-no" title="statement not covered" > logger.info(`Returning cached news article with UUID ${uuid}`);</span>
<span class="cstat-no" title="statement not covered" > return cachedData;</span>
}
// Make request to external API
const url = `${newsApiConfig.baseUrl}${newsApiConfig.endpoints.uuid.replace('{uuid}', uuid)}`;
logger.info(`Fetching news article with UUID ${uuid} from: ${url}`);
const response: AxiosResponse<SingleArticleResponse> = await axios.get(url, {
params: {
api_token: newsApiConfig.apiToken
}
});
// Cache the response data with long TTL as specific article content doesn't change
const ttl = cacheService.getTTL('uuid');
cacheService.set(cacheKey, response.data, ttl);
logger.debug(`Cached news article with UUID ${uuid} with TTL: ${ttl}s`);
return response.data;
} catch (error) {
logger.error(`Error fetching news article with UUID ${uuid}:`, error);
throw new Error(`Failed to fetch news article: ${error instanceof Error ? error.message : <span class="branch-1 cbranch-no" title="branch not covered" >String(error)}</span>`);
}
}
/**
* Fetch available news sources with optional filtering
* @param params Query parameters for the API request
* @returns Promise with the sources API response
*/
<span class="fstat-no" title="function not covered" > async </span>getNewsSources(params: Omit<SourcesApiParams, 'api_token'>): Promise<SourcesApiResponse> {
<span class="cstat-no" title="statement not covered" > try {</span>
// Generate cache key based on params
const cacheKey = <span class="cstat-no" title="statement not covered" >`news_sources_${JSON.stringify(params)}`;</span>
// Check if data is in cache
const cachedData = <span class="cstat-no" title="statement not covered" >cacheService.get<SourcesApiResponse>(cacheKey);</span>
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (cachedData) {</span>
<span class="cstat-no" title="statement not covered" > logger.info('Returning cached news sources');</span>
<span class="cstat-no" title="statement not covered" > return cachedData;</span>
}
// Combine parameters with API token and ensure English language if not specified
const queryParams: SourcesApiParams = <span class="cstat-no" title="statement not covered" >{</span>
...params,
language: params.language || 'en', // Default to English language if not specified
api_token: newsApiConfig.apiToken
};
// Make request to external API
const url = <span class="cstat-no" title="statement not covered" >`${newsApiConfig.baseUrl}${newsApiConfig.endpoints.sources}`;</span>
<span class="cstat-no" title="statement not covered" > logger.info(`Fetching news sources from: ${url}`);</span>
const response: AxiosResponse<SourcesApiResponse> = <span class="cstat-no" title="statement not covered" >await axios.get(url, { </span>
params: queryParams
});
// Cache the response data with long TTL as sources don't change often
const ttl = <span class="cstat-no" title="statement not covered" >cacheService.getTTL('sources');</span>
<span class="cstat-no" title="statement not covered" > cacheService.set(cacheKey, response.data, ttl);</span>
<span class="cstat-no" title="statement not covered" > logger.debug(`Cached news sources data with TTL: ${ttl}s`);</span>
<span class="cstat-no" title="statement not covered" > return response.data;</span>
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error('Error fetching news sources:', error);</span>
<span class="cstat-no" title="statement not covered" > throw new Error(`Failed to fetch news sources: ${error instanceof Error ? error.message : String(error)}`);</span>
}
}
}
</pre></td></tr></table></pre>
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