Building and Running

• Install

  npm install

• Lint and run tests

  npm run build

• Run CLI

  npm start
  

Third party libraries

• mocha : for organizing tests
• eslint : for linting

About Solution

Assumptions

• names of family members are unique, or else are appended with I, II etc.

Models

• Person

  • has gender
  • has name
  • has ID (lowercase of name)

• Family

  • has wife
  • has husband
  • has children

• Family Tree

  • is a tree structure
  • each node has a family
  • each node can have child nodes (containing family of children)

• Relationships

  • has a family tree
  • runs functions on family tree to get a relation

Command Interpreter Design

• CLI
  • listens to console
  • invokes CommandRunner for every input
• Command Runner
  • contains list of commands
  • for every input, finds a relevant command
  • invokes command and returns output
• Command
  • Is super class of all commands
  • appliesTo(input) : returns true if command applies to user input
  • execute(input) : runs user command on relationships and returns output
  • usage() : returns sample usage for a command
• FindRelation Command
  • command to find persons of a particular relation
  • e.g Person= ; Relative =
• FindRelative Comamnd
  • command to find relation to a relative
  • e.g. Person= ; Relation =
• AddChild Command
  • adds a child to a mother in family tree
  • e.g. Mother= ; Son/Daughter =
• MostGirlChildren Command
  • returns mothers with most number of girl children
  • e.g Most Girl Children