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require "csv"
class Csv::Import
attr_reader :user, :program
def initialize(user, program)
@user = user
@program = program
end
def can_parse?(directory)
database_file(directory).present?
end
def import_from(directory)
ActiveRecord::Base.transaction do
csv_rows_from(database_file(directory)) do |row|
import(row)
end
end
end
def import(row)
workout_row = Csv::Workout.map_from(row, user)
routine = program.routines.find_by(name: workout_row.workout)
workout = user.begin_workout(routine, workout_row.date, workout_row.body_weight_lb)
routine.exercises.each do |exercise|
exercise_row = workout_row.find(exercise)
next if exercise_row.nil?
exercise_row.sets.compact.each_with_index do |completed_reps, index|
next if completed_reps.blank?
workout.train(exercise, exercise_row.weight_lb, repetitions: completed_reps, set: index)
end
end
end
private
def database_file(dir)
Dir.glob("#{dir}/*csv*").first
end
def csv_rows_from(file)
previous = nil
::CSV.foreach(file).drop(1).each do |row|
duplicate = previous.present? && row == previous
next if duplicate
yield row
previous = row
end
end
end
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