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114 lines
3.6 KiB
114 lines
3.6 KiB
8 years ago
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require 'csv'
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class BikeCsvImporter
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attr_reader :file
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def initialize(file)
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@file = file
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end
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def run
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result = {imported_count: 0, skipped_shop_ids: []}
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fetch do |bike_hash|
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bike = import_bike bike_hash
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if bike.try :persisted?
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result[:imported_count] += 1
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else
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result[:skipped_shop_ids].push bike.try(:shop_id) || bike_hash.values.first
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end
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end
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result
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end
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def analyze(fields = [])
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fields = fields.map &:downcase
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grouped = {}
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fetch do |bike_hash|
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bike_hash.each do |key, value|
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next if fields.any? && !fields.include?(key)
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grouped[key] ||= {}
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grouped[key][value] ||= 0
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grouped[key][value] += 1
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end
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end
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grouped
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end
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private
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def fetch
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CSV.foreach(file).each_with_index do |row, i|
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if i.zero?
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parse_header row
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else
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yield parse_bike(row)
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end
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end
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end
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def parse_header(row)
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@header = row.map(&:downcase)
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end
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def parse_bike(row)
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@header.zip(row).to_h
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end
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# + Velocipede Number -> Bikes.shop_id
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# Program -> Bikes.bike_purpose_id
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#
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# Gone -> If "Yes", set 'gone' to true, then create a Log entry like the following:
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# id | loggable_id | loggable_type | logger_id | logger_type | context | start_date | end_date | description | log_action_id | log_action_type | created_at | updated_at
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# 18 | 1 | Bike | 4 | User | | 2017-02-03 23:27:00 | 2017-02-03 23:27:00 | Gone | 5 | ActsAsLoggable::BikeAction | 2017-02-03 23:27:36.8387 | 2017-02-03 23:27:36.8387
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# See https://github.com/spacemunkay/BikeShed/blob/master/app/components/bike_logs.rb#L12-L18 for example. Use user_id 1 for current_user_id (1 should be the admin ID I think). Use "Date Out" column for start_date & end_date. Set action_id to "COMPLETED".
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#
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# Date In -> Create a bike log entry with start_date & end_date with same value as "Date In". Set action_id to "AQUIRED"
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# Date Out -> Should be the start_date & end_date value for "Gone" column mentioned above.
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# Price -> Bikes.value
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# Make -> Bikes.bike_brand_id
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# Model -> Bikes.bike_model_id
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# to Whom -> ignore
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# Zip Code -> ignore
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# Comment -> Create a bike log entry with action_id "NOTE". The log 'description' should be the value of 'Comment'.
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#
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# Data at the end of the CSV seems to be missing a lot of fields. If any field is empty, the the value can be "UNDETERMINED" if applicable, or ignored. Any other dates beside "Date In/Out" can be current date.
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#
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# I realize the log entry stuff is likely complicated and time consuming. At a minimum, the most important columns to import are the following: Velocipede Number, Program, Gone, Make, Model. To avoid creating the log entry for "Gone", we would instead just set 'gone' to true.
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def import_bike(bike_hash)
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bike = Bike.new bike_attrs(bike_hash)
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bike.save
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end
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def bike_attrs(bike_hash)
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%i{ shop_id bike_purpose gone }.each_with_object({}) do |field, memo|
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memo[field] = send :"bike_attr_#{ field }", bike_hash
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end
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end
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def bike_attr_shop_id(bike_hash)
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bike_hash['velocipede number'].to_i
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end
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def bike_attr_bike_purpose(bike_hash)
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# TODO bike_hash['program']
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end
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def bike_attr_gone(bike_hash)
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%w{ yes yeah y }.include? clean_value(bike_hash['gone']).try :downcase
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end
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def clean_value(value)
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value_or_nil strip_value(value)
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end
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def strip_value(value)
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value.try(:strip).try(:gsub, /\n|\r/, '')
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end
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def value_or_nil(value)
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return value unless ['?', 'n/a', 'missing', 'unknown', ''].include? value.try(:downcase)
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end
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end
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