From 0dcaa96a98b7cc73c6d742fb608b76b58e9b0b5b Mon Sep 17 00:00:00 2001
From: Aditya Rana <62557376+Kingslayer4515@users.noreply.github.com>
Date: Wed, 25 Dec 2024 11:59:58 +0530
Subject: [PATCH 1/3] Add files via upload

---
 books_scraper/__init__.py                     |   0
 .../__pycache__/__init__.cpython-39.pyc       | Bin 0 -> 159 bytes
 .../__pycache__/pipelines.cpython-39.pyc      | Bin 0 -> 1434 bytes
 .../__pycache__/settings.cpython-39.pyc       | Bin 0 -> 358 bytes
 books_scraper/items.py                        |  12 ++
 books_scraper/middlewares.py                  | 103 ++++++++++++++++++
 books_scraper/pipelines.py                    |  39 +++++++
 books_scraper/readme.md                       |  34 ++++++
 books_scraper/settings.py                     |  91 ++++++++++++++++
 books_scraper/spiders/__init__.py             |   4 +
 .../__pycache__/__init__.cpython-39.pyc       | Bin 0 -> 167 bytes
 .../__pycache__/books_spider.cpython-39.pyc   | Bin 0 -> 1024 bytes
 books_scraper/spiders/books_spider.py         |  28 +++++
 13 files changed, 311 insertions(+)
 create mode 100644 books_scraper/__init__.py
 create mode 100644 books_scraper/__pycache__/__init__.cpython-39.pyc
 create mode 100644 books_scraper/__pycache__/pipelines.cpython-39.pyc
 create mode 100644 books_scraper/__pycache__/settings.cpython-39.pyc
 create mode 100644 books_scraper/items.py
 create mode 100644 books_scraper/middlewares.py
 create mode 100644 books_scraper/pipelines.py
 create mode 100644 books_scraper/readme.md
 create mode 100644 books_scraper/settings.py
 create mode 100644 books_scraper/spiders/__init__.py
 create mode 100644 books_scraper/spiders/__pycache__/__init__.cpython-39.pyc
 create mode 100644 books_scraper/spiders/__pycache__/books_spider.cpython-39.pyc
 create mode 100644 books_scraper/spiders/books_spider.py

diff --git a/books_scraper/__init__.py b/books_scraper/__init__.py
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diff --git a/books_scraper/items.py b/books_scraper/items.py
new file mode 100644
index 0000000..42c4bad
--- /dev/null
+++ b/books_scraper/items.py
@@ -0,0 +1,12 @@
+# Define here the models for your scraped items
+#
+# See documentation in:
+# https://docs.scrapy.org/en/latest/topics/items.html
+
+import scrapy
+
+
+class BooksScraperItem(scrapy.Item):
+    # define the fields for your item here like:
+    # name = scrapy.Field()
+    pass
diff --git a/books_scraper/middlewares.py b/books_scraper/middlewares.py
new file mode 100644
index 0000000..b11eee6
--- /dev/null
+++ b/books_scraper/middlewares.py
@@ -0,0 +1,103 @@
+# Define here the models for your spider middleware
+#
+# See documentation in:
+# https://docs.scrapy.org/en/latest/topics/spider-middleware.html
+
+from scrapy import signals
+
+# useful for handling different item types with a single interface
+from itemadapter import is_item, ItemAdapter
+
+
+class BooksScraperSpiderMiddleware:
+    # Not all methods need to be defined. If a method is not defined,
+    # scrapy acts as if the spider middleware does not modify the
+    # passed objects.
+
+    @classmethod
+    def from_crawler(cls, crawler):
+        # This method is used by Scrapy to create your spiders.
+        s = cls()
+        crawler.signals.connect(s.spider_opened, signal=signals.spider_opened)
+        return s
+
+    def process_spider_input(self, response, spider):
+        # Called for each response that goes through the spider
+        # middleware and into the spider.
+
+        # Should return None or raise an exception.
+        return None
+
+    def process_spider_output(self, response, result, spider):
+        # Called with the results returned from the Spider, after
+        # it has processed the response.
+
+        # Must return an iterable of Request, or item objects.
+        for i in result:
+            yield i
+
+    def process_spider_exception(self, response, exception, spider):
+        # Called when a spider or process_spider_input() method
+        # (from other spider middleware) raises an exception.
+
+        # Should return either None or an iterable of Request or item objects.
+        pass
+
+    def process_start_requests(self, start_requests, spider):
+        # Called with the start requests of the spider, and works
+        # similarly to the process_spider_output() method, except
+        # that it doesn’t have a response associated.
+
+        # Must return only requests (not items).
+        for r in start_requests:
+            yield r
+
+    def spider_opened(self, spider):
+        spider.logger.info('Spider opened: %s' % spider.name)
+
+
+class BooksScraperDownloaderMiddleware:
+    # Not all methods need to be defined. If a method is not defined,
+    # scrapy acts as if the downloader middleware does not modify the
+    # passed objects.
+
+    @classmethod
+    def from_crawler(cls, crawler):
+        # This method is used by Scrapy to create your spiders.
+        s = cls()
+        crawler.signals.connect(s.spider_opened, signal=signals.spider_opened)
+        return s
+
+    def process_request(self, request, spider):
+        # Called for each request that goes through the downloader
+        # middleware.
+
+        # Must either:
+        # - return None: continue processing this request
+        # - or return a Response object
+        # - or return a Request object
+        # - or raise IgnoreRequest: process_exception() methods of
+        #   installed downloader middleware will be called
+        return None
+
+    def process_response(self, request, response, spider):
+        # Called with the response returned from the downloader.
+
+        # Must either;
+        # - return a Response object
+        # - return a Request object
+        # - or raise IgnoreRequest
+        return response
+
+    def process_exception(self, request, exception, spider):
+        # Called when a download handler or a process_request()
+        # (from other downloader middleware) raises an exception.
+
+        # Must either:
+        # - return None: continue processing this exception
+        # - return a Response object: stops process_exception() chain
+        # - return a Request object: stops process_exception() chain
+        pass
+
+    def spider_opened(self, spider):
+        spider.logger.info('Spider opened: %s' % spider.name)
diff --git a/books_scraper/pipelines.py b/books_scraper/pipelines.py
new file mode 100644
index 0000000..9bdde01
--- /dev/null
+++ b/books_scraper/pipelines.py
@@ -0,0 +1,39 @@
+import pymongo
+
+class BooksScraperPipeline:
+    def __init__(self):
+        # MongoDB setup
+        self.client = pymongo.MongoClient("mongodb://localhost:27017/")
+        self.db = self.client["books_database"]
+        self.collection = self.db["products"]
+
+    def process_item(self, item, spider):
+        # Clean and process the product_name
+        item['product_name'] = item['product_name'].strip() if item['product_name'] else "Unknown Product"
+
+        # Clean and convert the price to float
+        if item['price']:
+            item['price'] = float(item['price'].replace('£', '').strip())
+        else:
+            item['price'] = 0.0  # Default to 0.0 if the price is missing
+
+        # Convert rating to float
+        rating_map = {'One': 1.0, 'Two': 2.0, 'Three': 3.0, 'Four': 4.0, 'Five': 5.0}
+        item['rating'] = rating_map.get(item['rating'], 0.0)  # Default to 0.0 if rating is missing
+
+        # Clean and standardize availability
+        raw_availability = item['availability'].lower() if item['availability'] else ''
+        item['availability'] = 'In Stock' if 'in stock' in raw_availability else 'Out of Stock'
+
+        # Insert the cleaned and processed item into MongoDB
+        self.collection.insert_one({
+            "product_name": item['product_name'],
+            "price": item['price'],
+            "rating": item['rating'],
+            "availability": item['availability']
+        })
+        return item
+
+    def close_spider(self, spider):
+        # Close the MongoDB connection
+        self.client.close()
diff --git a/books_scraper/readme.md b/books_scraper/readme.md
new file mode 100644
index 0000000..617e83f
--- /dev/null
+++ b/books_scraper/readme.md
@@ -0,0 +1,34 @@
+# Books Web Scraper
+
+This project is a web scraper built using the Scrapy framework. It crawls the [Books to Scrape](http://books.toscrape.com/) website to extract product details such as name, price, rating, and availability. The extracted and cleaned data is stored in a MongoDB database.
+
+---
+
+## Overview
+
+The scraper performs the following tasks:
+1. Crawls the website to extract:
+   - Product Name
+   - Price
+   - Rating
+   - Availability
+2. Cleans and processes the extracted data:
+   - Converts price to float
+   - Maps ratings to numerical values
+   - Standardizes availability to "In Stock" or "Out of Stock"
+3. Stores the processed data into a MongoDB database with the schema:
+   - `product_name` (string)
+   - `price` (float)
+   - `rating` (float)
+   - `availability` (string)
+
+---
+
+## Setup and Running the Scraper
+
+### Prerequisites
+- Python 3.7 or above
+- MongoDB installed and running locally
+- pip (Python package manager)
+
+
diff --git a/books_scraper/settings.py b/books_scraper/settings.py
new file mode 100644
index 0000000..d2e5c6a
--- /dev/null
+++ b/books_scraper/settings.py
@@ -0,0 +1,91 @@
+# Scrapy settings for books_scraper project
+#
+# For simplicity, this file contains only settings considered important or
+# commonly used. You can find more settings consulting the documentation:
+#
+#     https://docs.scrapy.org/en/latest/topics/settings.html
+#     https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
+#     https://docs.scrapy.org/en/latest/topics/spider-middleware.html
+
+BOT_NAME = 'books_scraper'
+
+SPIDER_MODULES = ['books_scraper.spiders']
+NEWSPIDER_MODULE = 'books_scraper.spiders'
+
+
+# Crawl responsibly by identifying yourself (and your website) on the user-agent
+#USER_AGENT = 'books_scraper (+http://www.yourdomain.com)'
+
+# Obey robots.txt rules
+ROBOTSTXT_OBEY = True
+
+# Configure maximum concurrent requests performed by Scrapy (default: 16)
+#CONCURRENT_REQUESTS = 32
+
+# Configure a delay for requests for the same website (default: 0)
+# See https://docs.scrapy.org/en/latest/topics/settings.html#download-delay
+# See also autothrottle settings and docs
+#DOWNLOAD_DELAY = 3
+# The download delay setting will honor only one of:
+#CONCURRENT_REQUESTS_PER_DOMAIN = 16
+#CONCURRENT_REQUESTS_PER_IP = 16
+
+# Disable cookies (enabled by default)
+#COOKIES_ENABLED = False
+
+# Disable Telnet Console (enabled by default)
+#TELNETCONSOLE_ENABLED = False
+
+# Override the default request headers:
+#DEFAULT_REQUEST_HEADERS = {
+#   'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
+#   'Accept-Language': 'en',
+#}
+
+# Enable or disable spider middlewares
+# See https://docs.scrapy.org/en/latest/topics/spider-middleware.html
+#SPIDER_MIDDLEWARES = {
+#    'books_scraper.middlewares.BooksScraperSpiderMiddleware': 543,
+#}
+
+# Enable or disable downloader middlewares
+# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
+#DOWNLOADER_MIDDLEWARES = {
+#    'books_scraper.middlewares.BooksScraperDownloaderMiddleware': 543,
+#}
+
+# Enable or disable extensions
+# See https://docs.scrapy.org/en/latest/topics/extensions.html
+#EXTENSIONS = {
+#    'scrapy.extensions.telnet.TelnetConsole': None,
+#}
+
+# Configure item pipelines
+# See https://docs.scrapy.org/en/latest/topics/item-pipeline.html
+#ITEM_PIPELINES = {
+#    'books_scraper.pipelines.BooksScraperPipeline': 300,
+#}
+
+# Enable and configure the AutoThrottle extension (disabled by default)
+# See https://docs.scrapy.org/en/latest/topics/autothrottle.html
+#AUTOTHROTTLE_ENABLED = True
+# The initial download delay
+#AUTOTHROTTLE_START_DELAY = 5
+# The maximum download delay to be set in case of high latencies
+#AUTOTHROTTLE_MAX_DELAY = 60
+# The average number of requests Scrapy should be sending in parallel to
+# each remote server
+#AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0
+# Enable showing throttling stats for every response received:
+#AUTOTHROTTLE_DEBUG = False
+
+# Enable and configure HTTP caching (disabled by default)
+# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
+#HTTPCACHE_ENABLED = True
+#HTTPCACHE_EXPIRATION_SECS = 0
+#HTTPCACHE_DIR = 'httpcache'
+#HTTPCACHE_IGNORE_HTTP_CODES = []
+#HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'
+ITEM_PIPELINES = {
+   'books_scraper.pipelines.BooksScraperPipeline': 300,
+}
diff --git a/books_scraper/spiders/__init__.py b/books_scraper/spiders/__init__.py
new file mode 100644
index 0000000..ebd689a
--- /dev/null
+++ b/books_scraper/spiders/__init__.py
@@ -0,0 +1,4 @@
+# This package will contain the spiders of your Scrapy project
+#
+# Please refer to the documentation for information on how to create and manage
+# your spiders.
diff --git a/books_scraper/spiders/__pycache__/__init__.cpython-39.pyc b/books_scraper/spiders/__pycache__/__init__.cpython-39.pyc
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diff --git a/books_scraper/spiders/books_spider.py b/books_scraper/spiders/books_spider.py
new file mode 100644
index 0000000..c62d79e
--- /dev/null
+++ b/books_scraper/spiders/books_spider.py
@@ -0,0 +1,28 @@
+import scrapy
+
+class BooksSpider(scrapy.Spider):
+    name = "books_spider"
+    start_urls = ['http://books.toscrape.com/']
+
+    def parse(self, response):
+        for book in response.css('article.product_pod'):
+            # Extract data
+            product_name = book.css('h3 a::attr(title)').get()
+            price = book.css('p.price_color::text').get()
+            rating = book.css('p::attr(class)').re_first('star-rating (\w+)')
+            availability_raw = book.css('p.instock.availability::text').getall()
+
+            # Clean and process availability
+            availability = ''.join(availability_raw).strip()  # Combine all text and strip spaces
+
+            yield {
+                'product_name': product_name,
+                'price': price,
+                'rating': rating,
+                'availability': availability,
+            }
+
+        # Handle pagination
+        next_page = response.css('li.next a::attr(href)').get()
+        if next_page:
+            yield response.follow(next_page, self.parse)

From f5ff86bfffc664a88febf39db4f34a2af5802b91 Mon Sep 17 00:00:00 2001
From: Aditya Rana <62557376+Kingslayer4515@users.noreply.github.com>
Date: Wed, 25 Dec 2024 21:43:36 +0530
Subject: [PATCH 2/3] Add files via upload

---
 readme.md | 88 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 readme.md

diff --git a/readme.md b/readme.md
new file mode 100644
index 0000000..3015bbb
--- /dev/null
+++ b/readme.md
@@ -0,0 +1,88 @@
+
+# Books Web Scraper
+
+This project is a web scraper built using the Scrapy framework. It crawls the [Books to Scrape](http://books.toscrape.com/) website to extract product details such as name, price, rating, and availability. The extracted and cleaned data is stored in a MongoDB database.
+
+---
+
+## Overview
+
+The scraper performs the following tasks:
+1. Crawls the website to extract:
+   - Product Name
+   - Price
+   - Rating
+   - Availability
+2. Cleans and processes the extracted data:
+   - Converts price to float
+   - Maps ratings to numerical values
+   - Standardizes availability to "In Stock" or "Out of Stock"
+3. Stores the processed data into a MongoDB database with the schema:
+   - `product_name` (string)
+   - `price` (float)
+   - `rating` (float)
+   - `availability` (string)
+
+---
+
+## Setup and Running the Scraper
+
+### Prerequisites
+- Python 3.7 or above
+- MongoDB installed and running locally
+- pip (Python package manager)
+- **Scrapy**: For web scraping.
+- **pymongo**: To interact with MongoDB.
+- **Rust Compiler**: Required for building certain Python packages (e.g., cryptography).
+
+---
+
+### Installation
+
+1. Clone the repository:
+   ```bash
+   git clone <your-forked-repo-url>
+   cd <your-repo-directory>
+   ```
+
+2. Create and activate a virtual environment:
+   ```bash
+   python -m venv venv
+   venv\Scripts\activate
+   ```
+
+3. Install dependencies:
+   ```bash
+   pip install scrapy pymongo
+   ```
+
+4. Ensure MongoDB is running locally 
+  
+  
+
+
+
+### Running the Crawler
+
+1. Navigate to the project directory:
+   ```bash
+   cd bookscraper
+   ```
+
+2. Run the Scrapy spider:
+   ```bash
+   scrapy crawl books_spider
+   ```
+
+3. Check MongoDB Compass to verify the scraped data in the `books_database` under the `products` collection.
+
+---
+
+## Dependencies
+- **Scrapy**: For web crawling and data extraction.
+- **pymongo**: To interact with MongoDB.
+- **Rust**: Required for certain Python dependencies (e.g., cryptography).
+
+
+
+

From 6ca26835f670cf719693dcc9865dc950884118dc Mon Sep 17 00:00:00 2001
From: Aditya Rana <62557376+Kingslayer4515@users.noreply.github.com>
Date: Wed, 25 Dec 2024 21:45:06 +0530
Subject: [PATCH 3/3] Delete README.md

---
 README.md | 73 -------------------------------------------------------
 1 file changed, 73 deletions(-)
 delete mode 100644 README.md

diff --git a/README.md b/README.md
deleted file mode 100644
index 3ae235b..0000000
--- a/README.md
+++ /dev/null
@@ -1,73 +0,0 @@
-# Data Engineering Internship Assignment
-
-Welcome to the Data Engineering Internship Assignment! This task is designed to evaluate your problem-solving skills, understanding of data pipelines, and ability to work with web crawling and data extraction. Please read the instructions carefully and submit your solution as per the guidelines provided.
-
-## Problem Statement
-
-You are tasked with building a basic web crawling pipeline to extract and process data from a target website. The goal is to:
-
-1. **Crawl** a given webpage to extract specific information.
-2. **Clean and process** the extracted data.
-3. **Store** the processed data into a MongoDB database.
-
-### Target Website
-
-You will be working with the Books to Scrape website (http://books.toscrape.com/) or any other publicly accessible e-commerce website containing product information. Ensure that your crawler abides by the website's `robots.txt` policy.
-
-### Tasks
-
-#### Step 1: Web Crawling
-
-1. Use the `Scrapy` framework to:
-   - Fetch the HTML content of the target webpage.
-   - Extract product details such as:
-     - `Product Name`
-     - `Price`
-     - `Rating`
-     - `Availability Status`
-
-#### Step 2: Data Transformation
-
-1. Clean the extracted data (e.g., remove extra whitespace, convert prices to float, handle missing ratings).
-2. Standardize the data (e.g., convert availability status to `In Stock` or `Out of Stock`).
-
-#### Step 3: Data Storage
-
-1. Store the processed data into a MongoDB database.
-2. Use a collection named `products` with the following schema:
-   - `product_name` (string)
-   - `price` (float)
-   - `rating` (float)
-   - `availability` (string)
-
-#### Step 4: Documentation
-
-Prepare a `README.md` file that includes:
-1. An overview of your solution.
-2. Steps to set up and run your crawler.
-3. Dependencies and setup instructions.
-
-#### Step 5: Git Guidelines
-
-1. Use meaningful commit messages.
-2. Follow a proper branch naming convention (e.g., `feature/<your_name>`).
-3. Ensure your code is clean, modular, and well-commented.
-
-## Submission Guidelines
-
-1. Fork this repository.
-2. Create a new branch named `submission/<your_name>`.
-3. Commit your code and push it to your forked repository.
-4. Create a Pull Request (PR) to the `main` branch of this repository.
-5. Include your `README.md` and ensure your code is well-documented.
-
-## Evaluation Criteria
-
-1. **Correctness**: Does your solution meet the requirements?
-2. **Code Quality**: Is your code clean, modular, and well-documented?
-3. **Efficiency**: Are the crawling and transformations optimized?
-4. **Git Practices**: Are proper git guidelines followed?
-
----
-
-Good luck! We look forward to reviewing your submission.