Class: Model

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

Overview

The model class processes data from user input and csv files and interacts with the controller

Constant Summary collapse

@@activities = 
[]

Class Method Summary collapse

Class Method Details

.add_activity(user, type, distance, duration, date) ⇒ Object

adds a new activity append it to the users file



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# File 'lib/Model.rb', line 49

def self.add_activity(user, type, distance, duration, date)
    activity = Activity.new(type, distance, duration, date)
    if is_in_past?(activity.date)
        activity.completed = true #checks activity completed if in the past
    end
    @@activities << activity
    #appends to file
    CSV.open("users/#{user}.csv", "a") do |file|
        file << [activity.type, activity.distance, activity.duration, activity.date, activity.completed]    
      end
    return @@activities
end

.add_user(user) ⇒ Object

create a file for a new user



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# File 'lib/Model.rb', line 12

def self.add_user(user)
    csv = CSV.open("users/#{user}.csv", 'wb') do |csv|
    end
end

.calculate_totals(user, type, month) ⇒ Object

calculates users total distance and time for a particular activity for a month (or all months) returns an array to send to display class



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# File 'lib/Model.rb', line 108

def self.calculate_totals(user, type, month)
    distance = 0
    duration = 0
    activities = self.get_activities(user)        
    activities.each do |activity|
        month_num = activity.date.to_s.split('-')[1].to_i
        if activity.type == type && ( month == 'All' || month == Date::MONTHNAMES[month_num] )
            distance += activity.distance.to_f
            duration += activity.duration.to_i
        end
    end
    minutes = duration % 60
    hours = (duration - minutes) / 60
    return [distance, "#{hours} hours #{minutes} mins"]
end

.delete_activity(user, activity) ⇒ Object

deletes an activity based on user selection updates the csv file to remove the deleted activity



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# File 'lib/Model.rb', line 76

def self.delete_activity(user, activity) 
    activities = self.get_activities(user)
    @@activities = activities.select do |a|
        a.type != activity.type || a.distance != activity.distance || a.duration != activity.duration
    end
    self.update_activities(user)      
end

.find_longest(user, type, month) ⇒ Object

finds the users longest activities by time and distance returns an array with longest distance and longest time to send to display



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# File 'lib/Model.rb', line 86

def self.find_longest(user, type, month)
    longest_distance = 0
    longest_duration = 0
    activities = self.get_activities(user)
    activities.each do |activity|
        month_num = activity.date.to_s.split('-')[1].to_i
        if month == 'All' || month == Date::MONTHNAMES[month_num]
            if activity.distance.to_f > longest_distance
                longest_distance = activity.distance.to_f
            end
            if activity.duration.to_i > longest_duration
                longest_duration = activity.duration.to_i
            end 
        end
    end
    minutes = longest_duration % 60
    hours = (longest_duration - minutes) / 60
    return [longest_distance, "#{hours} hours #{minutes} mins"]
end

.get_activities(user) ⇒ Object

parses activity data from users file uses to create new activity objects and add to activities array



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# File 'lib/Model.rb', line 19

def self.get_activities(user)
    activities = File.open("users/#{user}.csv", "r").read.split("\n")
    activities = activities.map do |activity|
        activity.split(",")
    end

    @@activities = []
    activities.each do |activity|
        new_activity = Activity.new(activity[0], activity[1], activity[2], activity[3])
        new_activity.completed = activity[4]
        @@activities << new_activity
    end

    # sort activities by date
    @@activities = @@activities.sort_by {|obj| obj.date.to_s.split('-').join('').to_i }
    return @@activities.reverse # sort from newest to oldest
end

.search_activities(user, date) ⇒ Object

search for activities by date returns array of activities that match date input



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# File 'lib/Model.rb', line 64

def self.search_activities(user, date)
    matched = []
    @@activities.each do |activity|
        if activity.date == date && activity.completed == 'false'
            matched << activity
        end
    end
    return matched  
end

.update_activities(user) ⇒ Object

iterates over activities array overwrites file with updated activities



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

def self.update_activities(user)
    CSV.open("users/#{user}.csv", "wb") do |file|
        @@activities.each do |activity|
          file << [activity.type, activity.distance, activity.duration, activity.date, activity.completed] 
        end   
      end
end