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AshDyson
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Apr 1, 2021
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -18,3 +18,4 @@ frontend/.eslintcache | |
| admin/.eslintcache | ||
| /logs | ||
| api/.DS_Store | ||
| api/imdb_dump.txt | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,63 +1,109 @@ | ||
| // https://www.imdb.com/title/tt6475714/ | ||
| const axios = require("axios"); | ||
| const cheerio = require("cheerio"); | ||
| const logger = require("../util/logger"); | ||
|
|
||
| const cacheManager = require("cache-manager"); | ||
| const memoryCache = cacheManager.caching({ | ||
| store: "memory", | ||
| max: 1000, | ||
| ttl: 604800 /*seconds*/, | ||
| }); | ||
| const zlib = require("zlib"); | ||
| const fs = require("fs"); | ||
| const path = require("path"); | ||
| const lineReader = require("line-reader"); | ||
| const Imdb = require("../models/imdb"); | ||
|
|
||
| async function lookup(imdb_id) { | ||
| return false; | ||
| if (!imdb_id) { | ||
| return false; | ||
| } | ||
|
|
||
| try { | ||
| let data = await getRaw(imdb_id); | ||
| return data; | ||
| } catch (err) { | ||
| return { | ||
| rating: false, | ||
| description: false, | ||
| }; | ||
| } | ||
| let data = await Imdb.findOne({ id: imdb_id }); | ||
| if (!data) return false; | ||
| return { | ||
| rating: { ratingValue: data.rating }, | ||
| description: false, | ||
| }; | ||
| } | ||
|
|
||
| async function getRaw(id) { | ||
| let data = false; | ||
| async function storeCache() { | ||
| const unzip = zlib.createGunzip(); | ||
| let project_folder, tempFile; | ||
| if (process.pkg) { | ||
| project_folder = path.dirname(process.execPath); | ||
| tempFile = path.join(project_folder, "./imdb_dump.txt"); | ||
| } else { | ||
| project_folder = __dirname; | ||
| tempFile = path.join(project_folder, "../imdb_dump.txt"); | ||
| } | ||
| logger.info("IMDB: Rebuilding Cache"); | ||
| try { | ||
| data = await memoryCache.wrap(`imdb_${id}`, function () { | ||
| return crawl(id); | ||
| logger.info("IMDB: Cache Downloading latest cache"); | ||
| const res = await axios({ | ||
| url: "https://datasets.imdbws.com/title.ratings.tsv.gz", | ||
| method: "GET", | ||
| responseType: "stream", | ||
| }); | ||
| } catch (err) { | ||
| logger.log("warn", `Error crawling imdb - ${id}`); | ||
| logger.log({ level: "error", message: err }); | ||
| logger.info("IMDB: Cache Storing to temp"); | ||
| const fileStream = fs.createWriteStream(tempFile); | ||
| res.data.pipe(unzip).pipe(fileStream); | ||
| fileStream.on("close", async () => { | ||
| logger.info("IMDB: Cache Download complete"); | ||
| try { | ||
| await parseData(tempFile); | ||
| logger.info("IMDB: Cache Finished"); | ||
| } catch (e) { | ||
| console.log(e); | ||
| logger.error("IMDB: Cache failed - db write issue"); | ||
| } | ||
| }); | ||
| } catch (e) { | ||
| logger.log({ level: "error", message: e }); | ||
| } | ||
| return data; | ||
| } | ||
|
|
||
| async function crawl(id) { | ||
| async function parseData(file) { | ||
| logger.info("IMDB: Cache Emptying old cache"); | ||
| await Imdb.deleteMany({}); | ||
| logger.info("IMDB: Cache cleared"); | ||
| logger.info("IMDB: Cache parsing download, updating local cache"); | ||
| return new Promise((resolve, reject) => { | ||
| let buffer = []; | ||
| lineReader.eachLine(file, async (line, last, cb) => { | ||
| let data = line.split("\t"); | ||
| if (data[0] === "tconst" || (parseInt(data[2]) < 1000 && !last)) { | ||
| cb(); | ||
| return; | ||
| } | ||
| if (buffer.length < 50000) { | ||
| buffer.push({ | ||
| insertOne: { | ||
| document: { | ||
| id: data[0], | ||
| rating: data[1], | ||
| }, | ||
| }, | ||
| }); | ||
| if (!last) { | ||
| cb(); | ||
| return; | ||
| } | ||
| } | ||
| try { | ||
| await processBuffer(buffer); | ||
| buffer = []; | ||
| if (last) { | ||
| resolve(); | ||
| } | ||
| cb(); | ||
| } catch { | ||
| cb(false); | ||
| reject(); | ||
| } | ||
| }); | ||
| }); | ||
| } | ||
|
|
||
| async function processBuffer(data) { | ||
| try { | ||
| let res = await axios.get(`https://www.imdb.com/title/${id}`); | ||
| let raw = cheerio.load(res.data); | ||
| let meta = JSON.parse(raw(`script[type='application/ld+json']`).html()); | ||
| let rating = meta.aggregateRating; | ||
| delete rating["@type"]; | ||
| let description = meta.description; | ||
| return { | ||
| rating: rating, | ||
| description: description, | ||
| }; | ||
| } catch (err) { | ||
| return { | ||
| rating: false, | ||
| description: false, | ||
| }; | ||
| await Imdb.bulkWrite(data); | ||
| } catch { | ||
| throw "IMDB: Error cannot write to Db"; | ||
| } | ||
| } | ||
|
|
||
| module.exports = lookup; | ||
| module.exports = { lookup, storeCache }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| const mongoose = require("mongoose"); | ||
|
|
||
| const ImdbSchema = mongoose.Schema({ | ||
| id: String, | ||
| rating: String, | ||
| }); | ||
|
|
||
| module.exports = mongoose.model("Imdb", ImdbSchema); |
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