chrome-web-store-scraper

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chrome-web-store-scraper

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A node js package for scraping the chrome web store. `npm i chrome-web-store-scraper`

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# NOTICE
It has been a very long time since i looked at this repo. i would guess it no longer functions. It might not take too much effort to fix up though.

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# chrome-web-store-scraper
A node js package for scraping the chrome web store.

# Requirements

This project requires selenium, a Web Browser Automation tool. The latest version of the Selenium Standalone Server can be downloaded from [seleniumhq](https://www.seleniumhq.org/download/).

Selenium Server must also be installed as `selenium` on the system PATH. For linux, a `selenium` bash script is included that can be paired with the `selenium.jar` for ease of use.

The [selenium-webdriver](https://www.npmjs.com/package/selenium-webdriver) npm package has some details on what is required.

# Selenium Setup

The Selenium server must be on the system path as '`selenium`' the easiest way to set it up to work with the chrome web store scraper is to make the `selenium` bash script (that is included this project) an executable with `chmod +x selenium` and then copy that file, along with the selenium server `.jar` file to `/bin/` or somewhere similar.

When copying the selenium server `.jar` make sure it is renamed from `selenium-server-standalone-3.14.0.jar` or whatever it is currently called, to just `selenium.jar`.

## chromedriver

As well as selenium, you're going to need the latest [chromedriver](http://chromedriver.chromium.org/) installed.

## chrome-browser-stable

A chrome browser is also required. you can get the latest [chrome-broswer-stable](https://www.chromium.org/getting-involved/dev-channel) from chromium.

# How To Use

You can use this to scrape search results for chrome extensions, or to scrape store information for a specific extension.

To include the scraper in your project:
```js
const ChromeWebScraper = require('chrome-web-store-scraper');
const scraper = new ChromeWebScraper();
```

## Search

The most basic search just requires you to provide a search term.
```js
    scraper.search('some-search-term').then(
        (res) => console.log(res),
        (err) => console.log(err)
    );
```

Example Response
```json
[
  {
    "title": "Data Scraper - Easy Web Scraping",
    "description": "Data Scraper extracts data out of HTML web pages and imports it into Microsoft Excel spreadsheets",
    "author": "",
    "category": "Productivity",
    "rating": 4.107231920199501,
    "numberOfRatings": 401,
    "storeURL": "https://chrome.google.com/webstore/detail/data-scraper-easy-web-scr/nndknepjnldbdbepjfgmncbggmopgden"
  },
  ...
]
```

there are additional options than can be used to perform a more directed search

### Search categories
You can provide as a category which the scraper will then use when building a search request, only one category can be provided.

Valid Categories
```json
all
accessibility
blogging
byGoogle
developerTools
fun
newsAndWeather
photos
productivity
searchTools
shopping
socialAndCommunication
sports
```

Categories can be provided in an options JSON object as demonstrated below:
```js
const options =  {searchCategory : 'newsAndWeather'}

scraper.search('searchString', options).then(
    (res) => console.log(res),
    (err) => console.log(err)
);
```

### Search Features

Search features can be provided as a means of specifying select features that a chrome extension must have.

Passed as an array of strings in an options JSON object, the features can be any combination of the following:
```json
offline
byGoogle
free
android
googleDrive
```

features can be provided in an options JSON object as demonstrated below:
```js
const options =  {
    searchFeatures : ['free', 'offline','byGoogle']
}

scraper.search('searchString', options).then(
    (res) => console.log(res),
    (err) => console.log(err)
);
```

### Features and Categories

Searching can be performed with categories and features together in the same options JSON object.

```js
const options =  {
    searchCategory : 'newsAndWeather',
    searchFeatures : ['free', 'byGoogle']
}

scraper.search('searchString', options).then(
    (res) => console.log(res),
    (err) => console.log(err)
);

```

## Search Options

As well as the categories and feature filters, additional options in the form of `locale` and `scrollAttempts` can also be used.

The `scrollAttempts` option is used to specify how many attempts are made to retrieve additional search results, by scrolling down the page loaded by selenium. the larger the number, the more the page will be scrolled down. It is worth noting that each scroll attempt is paired with a 50ms wait, so a number excessively large will result in longer processing times.

The `locale` option can be set by passing a locale string as an option. The locale string is used as the `hl` url option by the chrome extension store, to scrape search results in french, danish, or italian, locale strings  `'fr'`, `'da'`, or `'it'` could be used.

### Example Search with locale and scrollAttempts
```js
scraper.search('scraper',{scrollAttempts:200, locale:'da'}).then(
    (res) => console.log(res[0]),
    (err) => console.log(err)
);
```

## Extension Scraping

In order to scrape the store page for a specific chrome extension, this scraper requires a direct url to that page. These urls are to be passed as a parameter to the `scrapeApp` function.

```js
scraper.scrapeApp('url-to-some-app').then(
    (res) => console.log(res),
    (err) => console.log(err)
);
```

Example Response

```json
{
    "header": {
        "title": "Autosave webpage",
        "offeredBy": "offered by mtcutler1",
        "userCount": "48",
        "rating": "3.5",
        "ratingCount": 4,
        "imgURL": "https://lh3.googleusercontent.com/4jyS9mGYDUFs2KL52Xfg_I9EzkUIzlCboTp5Dvqv-vKrUWhoz9tNCWR4lPfNFneM2JFmgNrkCkc=w26-h26-e365"
    },
    "overview": {
        "summary": "Save ... a scheduled…",
        "description": "Save ... stay updated",
        "version": "0.1",
        "lastUpdatedDate": "January 24, 2018",
        "size": "178KiB",
        "language": "English (United States)",
        "screenshotURLs": [
            "https://lh3.googleusercontent.com/nBXzgn-La5s3HyynhHWmnJwAasC1KUMK8GfqCVnOqL-CEGhLOcVNGaNPYUQBv180-ypWPQN2xc8=w640-h400-e365",
            "https://lh3.googleusercontent.com/nBXzgn-La5s3HyynhHWmnJwAasC1KUMK8GfqCVnOqL-CEGhLOcVNGaNPYUQBv180-ypWPQN2xc8=w640-h400-e365",
            "https://lh3.googleusercontent.com/nBXzgn-La5s3HyynhHWmnJwAasC1KUMK8GfqCVnOqL-CEGhLOcVNGaNPYUQBv180-ypWPQN2xc8=w120-h90-e365"
        ],
        "additionalInfo": []
    },
    "reviews": [
    {
        "displayName": "Jeffrey",
        "profileImageURL": "//www.gstatic.com/s2/contacts/images/NoPicture.gif",
        "displayNameURL": "https://plus.google.com/110338040265199312388",
        "timestamp": "Modified Mar 21, 2018",
        "ratingString": "4 stars (Liked it)",
        "rating": 4,
        "comment": "Seemed to only work with one tab...would be perfect if it works on multiple tabs simultaneously"
    }
    ]
}
}
```

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