Replicate iprice.my functionality (Web Application + Web Scrapping App)

Before I describe the project I would just like to explain what [login to view URL] is. this website basically scraps data from different e-commerce websites on a real time basis, categorizes them according to their own category templates and displays them. Once a user clicks on the product, it takes them back to the website which originally holds the inventory. We need to create something similar but for different websites. The project will have two parts. Part 1 - Web Crawler & Database Mapping Create a crawler which will extract data from these three websites and maintain a clean database. This crawler will not be crawling one-time, it will be a continuous process as we want to ensure that we have up-to-date inventory from all three websites. We will define three different websites from where we will be scraping data initially. based on the sitemaps of these websites, you will do entire data mapping and come up with a sitemap for our website. By Data mapping I mean, you will create a master category template (based on the three websites) and then show which category from each website will be accommodated under which of our category. for e.g there are cameras available on two different websites, one lists them under the category cameras, while the other lists them under the category of photography so you will have to map that under one category. The deliverable for this part will be a document which will show a master category template and then it will show where each category from the three defined websites will go. Part 3 - Website Development Create an e-commerce website which shows data which we have scrapped. It will be an exact replica of [login to view URL] with slight differences as we will be making it for some other region. The functionalities will be exactly the same as iprice.my. The function of this website will not be to offer a checkout, however, it will redirect the user to the original website who holds this inventory. Preferred Languages/Technologies fro the Project: Web App: AngularJS Web Scraping: NodeJS or Java API: NodeJS or Java