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BikeCsvImporter: refactor by splitting into parts

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This commit is contained in:
Ilya Konanykhin 2017-03-20 00:48:37 +06:00
parent cfe81d6e65
commit b5e8aa554f
4 changed files with 124 additions and 125 deletions
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130
app/models/bike_csv_importer.rb
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@ -1,6 +1,11 @@
require 'csv'
class BikeCsvImporter
include BikeCsvImporter::Cache
include BikeCsvImporter::Cleaner
include BikeCsvImporter::BikeAttrs
attr_reader :file, :dry_run
def initialize(file, dry_run)
@ -11,10 +16,6 @@ class BikeCsvImporter
def run
result = {imported: {}, skipped: {}}
@bike_purpose_cache = {}
@bike_brand_cache = {}
@bike_model_cache = {}
fetch do |bike_hash|
bike = import_bike bike_hash
check_method = dry_run ? :valid? : :persisted?
@ -25,12 +26,6 @@ class BikeCsvImporter
end
end
missing_brands = @bike_brand_cache.select { |_, v| v.nil? }.map(&:first)
result[:missing_brands] = missing_brands if missing_brands.any?
missing_models = @bike_model_cache.select { |_, v| v.nil? }.map(&:first)
result[:missing_models] = missing_models if missing_models.any?
result
end
@ -70,9 +65,6 @@ class BikeCsvImporter
@header.zip(row).to_h
end
# + Velocipede Number -> Bikes.shop_id
# + Program -> Bikes.bike_purpose_id
#
# Gone -> If "Yes", set 'gone' to true, then create a Log entry like the following:
# 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
# 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
@ -80,123 +72,11 @@ class BikeCsvImporter
#
# Date In -> Create a bike log entry with start_date & end_date with same value as "Date In". Set action_id to "AQUIRED"
# Date Out -> Should be the start_date & end_date value for "Gone" column mentioned above.
# + Price -> Bikes.value
# + Make -> Bikes.bike_brand_id
# + Model -> Bikes.bike_model_id
# + to Whom -> ignore
# + Zip Code -> ignore
# Comment -> Create a bike log entry with action_id "NOTE". The log 'description' should be the value of 'Comment'.
#
# 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.
#
# 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.
def import_bike(bike_hash)
bike = Bike.new bike_attrs(bike_hash)
#bike.save unless dry_run
raise 'TODO save' unless dry_run
bike
end
def bike_attrs(bike_hash)
%i{ shop_id bike_purpose_id value bike_brand_id bike_model_id model bike_style_id bike_condition_id seat_tube_height bike_wheel_size_id serial_number }.each_with_object({}) do |field, memo|
memo[field] = send :"bike_attr_#{ field }", bike_hash
end
end
def bike_attr_shop_id(bike_hash)
bike_hash['velocipede number'].to_i
end
def bike_attr_bike_purpose_id(bike_hash)
map = {
'SALE' => /shop|as(-|\s+)is|safety\s*check/,
'BUILDBIKE' => /build|bikes.*world/,
'STORAGE' => nil,
'PARTS' => /part|frame/,
'SCRAP' => /scrap|strip/,
}
default = 'UNDETERMINED'
test_value = clean_value(bike_hash['program']).try :downcase
value = map.find { |_, regexp| regexp.try :match, test_value }.try :first
cached_bike_purpose(value || default).id
end
def bike_attr_gone(bike_hash)
%w{ yes yeah y }.include? clean_value(bike_hash['gone']).try :downcase
end
def bike_attr_value(bike_hash)
clean_value(bike_hash['price']).try(:gsub, /[$]/, '').try :to_i
end
def bike_attr_bike_brand_id(bike_hash)
brand = clean_value(bike_hash['make'])
return unless brand
cached_bike_brand(brand).try :id
end
def bike_attr_bike_model_id(bike_hash)
model = clean_value(bike_hash['model'])
return unless model
cached_bike_model(model).try :id
end
def bike_attr_model(bike_hash)
model = clean_value bike_hash['model']
model unless model =~ /unknown/i
end
def bike_attr_bike_style_id(_)
@bike_style_other_cache ||= BikeStyle.find_by_style('OTHER').id
end
def bike_attr_bike_condition_id(_)
@bike_condition_undertermined_cache ||= BikeCondition.find_by_condition('UNDETERMINED').id
end
def bike_attr_seat_tube_height(_)
0
end
def bike_attr_bike_wheel_size_id(_)
@bike_condition_wheel_size_undertermined_cache ||= BikeWheelSize.find_by_description('UNDETERMINED').id
end
def bike_attr_serial_number(_)
'UNDETERMINED'
end
def clean_value(value)
value_or_nil strip_value(value)
end
def strip_value(value)
value.try(:strip).try(:gsub, /\n|\r/, '')
end
def value_or_nil(value)
return value unless ['?', 'n/a', 'missing', 'unknown', ''].include? value.try(:downcase)
end
def cached_bike_purpose(purpose)
@bike_purpose_cache[purpose] ||= BikePurpose.find_by_purpose purpose
end
def cached_bike_brand(brand)
if @bike_brand_cache.has_key? brand
@bike_brand_cache[brand]
else
@bike_brand_cache[brand] = BikeBrand.where('lower(brand) = ?', brand.downcase).first
end
end
def cached_bike_model(model)
if @bike_model_cache.has_key? model
@bike_model_cache[model]
else
@bike_model_cache[model] = BikeModel.where('lower(model) = ?', model.downcase).first
end
end
end

78
app/models/bike_csv_importer/bike_attrs.rb Normal file
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@ -0,0 +1,78 @@
class BikeCsvImporter
module BikeAttrs
def bike_attr_fields
%i{ shop_id bike_purpose_id value bike_brand_id bike_model_id model bike_style_id bike_condition_id seat_tube_height bike_wheel_size_id serial_number }
end
def bike_attrs(bike_hash)
bike_attr_fields.each_with_object({}) do |field, memo|
memo[field] = send :"bike_attr_#{ field }", bike_hash
end
end
def bike_attr_shop_id(bike_hash)
bike_hash['velocipede number'].to_i
end
def bike_attr_bike_purpose_id(bike_hash)
map = {
'SALE' => /shop|as(-|\s+)is|safety\s*check/,
'BUILDBIKE' => /build|bikes.*world/,
'STORAGE' => nil,
'PARTS' => /part|frame/,
'SCRAP' => /scrap|strip/,
}
default = 'UNDETERMINED'
test_value = clean_value(bike_hash['program']).try :downcase
value = map.find { |_, regexp| regexp.try :match, test_value }.try :first
cached_bike_purpose(value || default).id
end
def bike_attr_gone(bike_hash)
%w{ yes yeah y }.include? clean_value(bike_hash['gone']).try :downcase
end
def bike_attr_value(bike_hash)
clean_value(bike_hash['price']).try(:gsub, /[$]/, '').try :to_i
end
def bike_attr_bike_brand_id(bike_hash)
brand = clean_value(bike_hash['make'])
return unless brand
cached_bike_brand(brand).try :id
end
def bike_attr_bike_model_id(bike_hash)
model = clean_value(bike_hash['model'])
return unless model
cached_bike_model(model).try :id
end
def bike_attr_model(bike_hash)
model = clean_value bike_hash['model']
model unless model =~ /unknown/i
end
def bike_attr_bike_style_id(_)
@bike_style_other_cache ||= BikeStyle.find_by_style('OTHER').id
end
def bike_attr_bike_condition_id(_)
@bike_condition_undertermined_cache ||= BikeCondition.find_by_condition('UNDETERMINED').id
end
def bike_attr_seat_tube_height(_)
0
end
def bike_attr_bike_wheel_size_id(_)
@bike_condition_wheel_size_undertermined_cache ||= BikeWheelSize.find_by_description('UNDETERMINED').id
end
def bike_attr_serial_number(_)
'UNDETERMINED'
end
end
end

26
app/models/bike_csv_importer/cache.rb Normal file
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@ -0,0 +1,26 @@
class BikeCsvImporter
module Cache
def cached_bike_purpose(purpose)
@bike_purpose_cache ||= {}
@bike_purpose_cache[purpose] ||= BikePurpose.find_by_purpose purpose
end
def cached_bike_brand(brand)
@bike_brand_cache ||= {}
if @bike_brand_cache.has_key? brand
@bike_brand_cache[brand]
else
@bike_brand_cache[brand] = BikeBrand.where('lower(brand) = ?', brand.downcase).first
end
end
def cached_bike_model(model)
@bike_model_cache ||= {}
if @bike_model_cache.has_key? model
@bike_model_cache[model]
else
@bike_model_cache[model] = BikeModel.where('lower(model) = ?', model.downcase).first
end
end
end
end

15
app/models/bike_csv_importer/cleaner.rb Normal file
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@ -0,0 +1,15 @@
class BikeCsvImporter
module Cleaner
def clean_value(value)
value_or_nil strip_value(value)
end
def strip_value(value)
value.try(:strip).try(:gsub, /\n|\r/, '')
end
def value_or_nil(value)
return value unless ['?', 'n/a', 'missing', 'unknown', ''].include? value.try(:downcase)
end
end
end