Class: SalesforceCertificationCalculator

Inherits:
Object
  • Object
show all
Defined in:
lib/salesforce_certification_calculator.rb

Defined Under Namespace

Classes: Exam, FileReader, Section, UI

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SalesforceCertificationCalculator

Creates SalesforceCertificationCalculator object

Examples:

Create Calculator Object

>> calculator = SalesforceCertificationCalculator.new


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# File 'lib/salesforce_certification_calculator.rb', line 14

def initialize
    @exams = []
    @exam = Exam.new
    @reader = FileReader.new
    @ui = UI.new
end

Instance Attribute Details

#exam ⇒ Exam

Returns object being used for calculations.

Returns:

  • (Exam) —

    object being used for calculations



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# File 'lib/salesforce_certification_calculator.rb', line 7

def exam
  @exam
end

#exams ⇒ Array (readonly)

Returns collection of Exam objects used for temporary storage.

Returns:

  • (Array) —

    collection of Exam objects used for temporary storage



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# File 'lib/salesforce_certification_calculator.rb', line 7

attr_accessor :exam

Instance Method Details

#calculate_total ⇒ Number

Determines cumulative score for the exam based on its sections’ weights and scores; shortcut for Exam method that returns total value of exam after calculating total

Examples:

Calculate Total

>> calculator = SalesforceCertificationCalculator.new
>> total = calculator.calculate_total
=> 87

Returns:

  • (Number) —

    cumulative score on exam; if sections’ weights do not sum to 100, it will return an error message as a string



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# File 'lib/salesforce_certification_calculator.rb', line 51

def calculate_total
    @exam.calculate_total

    return @exam.total
end

#determine_percentage_manually ⇒ Number

Determines cumulative score manually; shortcut that combines all of UI’s methods

Examples:

Calculate Total

>> calculator = SalesforceCertificationCalculator.new
>> total = calculator.determine_percentage_manually
=> 87

Returns:

  • (Number) —

    cumulative score on exam



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# File 'lib/salesforce_certification_calculator.rb', line 65

def determine_percentage_manually
    choice = @ui.select_list_or_new

    if choice == "LIST"
        # Get list of exams, prompt user to select one, then require user to provide their scores for all the exam's sections
        @exams = @reader.generate_exams_list
        @exam = @ui.select_specific_exam(@exams)

        # Only proceed if user did not end up entering data manually after not finding their exam listed
        if @exam.sections.length == 0
            @exam = @reader.extract_initial_exam_data(@exam)

            puts "You selected: #{@exam.title}"
            puts "Enter your scores for each of the exam's #{@exam.sections.length} sections in the order you are prompted"
            
            @exam = @ui.provide_scores(@exam)
        end
    else
        # Allow user to manually enter all data themselves without the aid of the data already stored in the module's XML files
        @exam = @ui.provide_all_details_manually
    end

    @exam.calculate_total

    puts "Your cumulative score is: #{@exam.total}%"

    return @exam.total
end

#extract_initial_exam_data ⇒ Object

Gets all details about an exam’s sections, including names and weights; shortcut for FileReader method to modify exam attribute on object

Examples:

Retrieve Exam Data

>> calculator = SalesforceCertificationCalculator.new
>> calculator.generate_exams_list
>> calculator.exam = calculator.exams[1]
>> calculator.extract_exam_data
=> <SalesforceCertificationCalculator::Exam 0x000987>


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# File 'lib/salesforce_certification_calculator.rb', line 39

def extract_initial_exam_data
    @exam = @reader.extract_initial_exam_data(@exam)
end

#generate_exams_list ⇒ Object

Gets list of all exams in the database, including their names and file paths; shortcut for FileReader method to modify exams attribute on object

Examples:

Retrieve Exams

>> calculator = SalesforceCertificationCalculator.new
>> exams = calculator.generate_exams_list
=> [<SalesforceCertificationCalculator::Exam 0x000987>, <SalesforceCertificationCalculator::Exam 0x000988>]


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# File 'lib/salesforce_certification_calculator.rb', line 27

def generate_exams_list
    @exams = @reader.generate_exams_list
end