joaomarceloods / fountain-coding-challenge

Fountain Programming Task

HOW TO RUN

Make sure you have a file input.txt on the same folder as main.rb (I included one for your convenience). Then run on Terminal:

ruby main.rb

Run tests using:

ruby test.rb

You should see a thumbs up emoji if all pass. Otherwise, you'll see an error message specifying which example failed.

Overview

Your task is to write a simple script that simulates a hiring process. This script will read a text file input.txt as input where each line is a special command, and write responses to another file output.txt. In the following sections, we provide you with command descriptions and the expected output.

Command Descriptions

• DEFINE:
  • COMMAND: DEFINE [STAGE_NAMES]
  • Define the stages in the hiring process. The available stages are ManualReview PhoneInterview BackgroundCheck DocumentSigning. The stages can be in any order, and an applicant must be in the last stage in order to be hired.
  • Output: DEFINE [STAGE_NAMES]
• CREATE:
  • COMMAND: CREATE [EMAIL]
  • Create an applicant with the specified email address. Check if the applicant is already in the system before creating a new one.
  • Output: if the applicant with the same email exists, Duplicate applicant. Otherwise, CREATE [EMAIL].
• ADVANCE:
  • COMMAND: ADVANCE [STAGE_NAME] or ADVANCE
  • Advance the applicant to the specified stage. If STAGE_NAME parameter is omitted, advance the applicant to the next stage.
  • Output: if the applicant is already in [STAGE_NAME] or the last stage, Already in [STAGE_NAME]. Otherwise, ADVANCE [STAGE_NAME].
• DECIDE:
  • COMMAND: DECIDE [EMAIL] 1 or DECIDE [EMAIL] 0
  • Decide if the applicant should be hired (1) or rejected (0). An applicant can be rejected (0) from any stage, but has to be in the last stage in order to be hired (1).
  • Output: if successfully hired, Hired [EMAIL]. If successfully rejected, Rejected [EMAIL]. Otherwise, Failed to decide for [EMAIL].
• STATS:
  • COMMAND: STATS
  • Print the number of applicants for all stages, including the hired and rejected.
  • Output: [STAGE_1] 0 [STAGE_2] 1 [STAGE_3] 1 Hired 2 Rejected 0

EXAMPLES

Example 1

input.txt

DEFINE ManualReview BackgroundCheck DocumentSigning
STATS
CREATE [e-mail]
ADVANCE [e-mail]
DECIDE [e-mail] 0
STATS

output.txt

DEFINE ManualReview BackgroundCheck DocumentSigning
ManualReview 0 BackgroundCheck 0 DocumentSigning 0 Hired 0 Rejected 0
CREATE [e-mail]
ADVANCE [e-mail]
Rejected [e-mail]
ManualReview 0 BackgroundCheck 0 DocumentSigning 0 Hired 0 Rejected 1

EXAMPLE 2

input.txt

DEFINE ManualReview BackgroundCheck
CREATE [e-mail]
CREATE [e-mail]
CREATE [e-mail]
ADVANCE [e-mail]
ADVANCE [e-mail] BackgroundCheck
DECIDE [e-mail] 1
DECIDE [e-mail] 1
ADVANCE [e-mail]
DECIDE [e-mail] 1

output.txt

DEFINE ManualReview BackgroundCheck
CREATE [e-mail]
CREATE [e-mail]
Duplicate applicant
ADVANCE [e-mail]
Already in BackgroundCheck
Hired [e-mail]
Failed to decide for [e-mail]
ADVANCE [e-mail]
Hired [e-mail]

Submission

When you are done, please zip everything and email it to [e-mail]. We will review your submission and get back to you ASAP!