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v1 endpoint implementation
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wyang14 committed May 1, 2024
1 parent e1ba9e9 commit b14ad05
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121 changes: 121 additions & 0 deletions apps/api/src/controllers/v1/scrape.ts
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import { Request, Response } from "express";
import { WebScraperDataProvider } from "../../scraper/WebScraper";
import { billTeam, checkTeamCredits } from "../../services/billing/credit_billing";
import { authenticateUser } from "../auth";
import { RateLimiterMode } from "../../types";
import { logJob } from "../../services/logging/log_job";
import { Document } from "../../lib/entities";
import { isUrlBlocked } from "../../scraper/WebScraper/utils/blocklist"; // Import the isUrlBlocked function

export async function scrapeHelper(
req: Request,
team_id: string,
crawlerOptions: any,
pageOptions: any
): Promise<{
success: boolean;
error?: string;
data?: Document;
returnCode: number;
}> {
const url = req.params.url;
if (!url) {
return { success: false, error: "Url is required", returnCode: 400 };
}

if (isUrlBlocked(url)) {
return { success: false, error: "Social media scraping is not support due to policy restrictions.", returnCode: 403 };
}

const a = new WebScraperDataProvider();
await a.setOptions({
mode: "single_urls",
urls: [url],
crawlerOptions: {
...crawlerOptions,
},
pageOptions: pageOptions,
});

const docs = await a.getDocuments(false);
// make sure doc.content is not empty
const filteredDocs = docs.filter(
(doc: { content?: string }) => doc.content && doc.content.trim().length > 0
);
if (filteredDocs.length === 0) {
return { success: true, error: "No page found", returnCode: 200 };
}

const billingResult = await billTeam(
team_id,
filteredDocs.length
);
if (!billingResult.success) {
return {
success: false,
error:
"Failed to bill team. Insufficient credits or subscription not found.",
returnCode: 402,
};
}

return {
success: true,
data: filteredDocs[0],
returnCode: 200,
};
}

export async function scrapeController(req: Request, res: Response) {
try {
// make sure to authenticate user first, Bearer <token>
const { success, team_id, error, status } = await authenticateUser(
req,
res,
RateLimiterMode.Scrape
);
if (!success) {
return res.status(status).json({ error });
}
const crawlerOptions = {};
const pageOptions = { onlyMainContent: false };
const origin = "api";

try {
const { success: creditsCheckSuccess, message: creditsCheckMessage } =
await checkTeamCredits(team_id, 1);
if (!creditsCheckSuccess) {
return res.status(402).json({ error: "Insufficient credits" });
}
} catch (error) {
console.error(error);
return res.status(500).json({ error: "Internal server error" });
}
const startTime = new Date().getTime();
const result = await scrapeHelper(
req,
team_id,
crawlerOptions,
pageOptions
);
const endTime = new Date().getTime();
const timeTakenInSeconds = (endTime - startTime) / 1000;
logJob({
success: result.success,
message: result.error,
num_docs: 1,
docs: [result.data],
time_taken: timeTakenInSeconds,
team_id: team_id,
mode: "scrape",
url: req.params.url,
crawlerOptions: crawlerOptions,
pageOptions: pageOptions,
origin: origin,
});
return res.status(result.returnCode).json(result);
} catch (error) {
console.error(error);
return res.status(500).json({ error: error.message });
}
}
6 changes: 6 additions & 0 deletions apps/api/src/routes/v1.ts
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import express from "express";
import { scrapeController } from "../../src/controllers/v1/scrape";

export const v1Router = express.Router();

v1Router.get("/v1/scrape/:url(*)", scrapeController);

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