Task Done By Shadi

Create and implement a backend system that is called from the sample UI that we have provided for you in the index.html file. It must meet the following requirements:

• The user identifier specified in the input field must be passed to the backend
• The backend must return appropriate data to the client so that an image will be displayed
• These rules must be applied in the following order of precedence to determine which data to return to the client:
  • If the last character of the user identifier is [6, 7, 8, 9], retrieve the image URL from https://my-json-server.typicode.com/ck-pacificdev/tech-test/images/{lastDigitOfUserIdentifier} where {lastDigitOfUserIdentifier} is the last digit of the identifier
  • If the user last character of the user identifier is [1, 2, 3, 4, 5], retrieve the image URL from the data.db Sqlite database where the images.id value matches the last digit of the identifier
  • If the user identifier contains at least one vowel character (aeiou), display the image from https://api.dicebear.com/8.x/pixel-art/png?seed=vowel&size=150
  • If the user identifier contains a non-alphanumeric character, pick a random number between 1-5 and display the image with the appropriate seed (e.g. https://api.dicebear.com/8.x/pixel-art/png?seed={randomNumber}&size=150)
  • If none of the above conditions are met, display the image from https://api.dicebear.com/8.x/pixel-art/png?seed=default&size=150

Once you are happy with your solution, please answer the following questions. There is no need for an essay - bullet pointing the key bits is completely fine!

1. How did you verify that everything works correctly? I tested my API using Swagger to ensure it met the requirements and debugged it line by line in my IDE to examine the rules and scenarios. Additionally, I ran the index.html file to verify that the email signature and the return type matched the request. Alongside these steps, I ensured that for each bullet point, representing a scenario, the URL was returned based on the condition. While I still need to add unit tests, for this purpose, I focused on implementing the main code and project.
2. How long did it take you to complete the task? I didn’t complete the project all at once since I was managing other tasks as well. Overall, it took me around 16 hours, which is equivalent to two working days. While this is sufficient to reach this stage, it’s not fully optimized or production-ready.
3. What else could be done to your solution to make it ready for production? Several improvements are needed to make the solution production-ready. Currently, there is no middleware for exception handling, which should be added to manage errors effectively. The results could be enhanced by implementing a result pattern, and the code could be cleaner by adhering to clean code principles. Regarding the CORS policy, I allowed all URLs during development, which is not secure or acceptable in a production environment and needs to be properly restricted. Additionally, the database is incomplete and only contains some sample records. Logging is another area to improve—I could integrate Serilog with various sinks to log essential and useful information.