61 lines
2.4 KiB
Ruby
61 lines
2.4 KiB
Ruby
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namespace :nc_mall do
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desc "Sync our NCMallRecord table with the live NC Mall"
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task :sync => :environment do
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# Log to STDOUT.
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Rails.logger = Logger.new(STDOUT)
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# First, load all records of what's being sold in the live NC Mall.
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# TODO: Load from other pages, too!
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live_item_records = NCMall.load_home_page[:items]
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# Then, get the existing NC Mall records in our database. (We include the
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# items, to be able to output the item name during logging.)
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existing_records = NCMallRecord.includes(:item).all
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existing_records_by_item_id = existing_records.to_h { |r| [r.item_id, r] }
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# Additionally, check which of the item IDs in the live records are items
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# we've seen before. (We'll skip records for items we don't know.)
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live_item_ids = live_item_records.map { |r| r[:id] }
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recognized_item_ids = Item.where(id: live_item_ids).pluck(:id).to_set
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Rails.logger.debug "We recognize #{recognized_item_ids.size} of these items"
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# For each record in the live NC Mall, check if there's an existing record.
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# If so, update it, and remove it from the existing records hash. If not,
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# create it.
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live_item_records.each do |record_data|
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# If we don't recognize this item ID in our database already, skip it.
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next unless recognized_item_ids.include?(record_data[:id])
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record = existing_records_by_item_id.delete(record_data[:id]) ||
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NCMallRecord.new
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record.item_id = record_data[:id]
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record.price = record_data[:price]
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record.discount_price = record_data.dig(:discount, :price)
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record.discount_begins_at = record_data.dig(:discount, :begins_at)
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record.discount_ends_at = record_data.dig(:discount, :ends_at)
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if record.save
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Rails.logger.info "Saved record for item #{record_data[:name]}"
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else
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Rails.logger.error "Failed to save record for item " +
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"#{record_data[:name]}: " +
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"#{record.errors.full_messages.join("; ")}: " +
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"#{record.inspect}"
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end
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end
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# For each existing record remaining in the existing records hash, this
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# means there was no live record corresponding to it during this sync.
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# Delete it!
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existing_records_by_item_id.values.each do |record|
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item_name = record.item&.name || "<item not found>"
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if record.destroy
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Rails.logger.info "Destroyed record #{record.id} for item " +
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"#{item_name}"
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else
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Rails.logger.error "Failed to destroy record #{record.id} for " +
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"item #{item_name}: #{record.inspect}"
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end
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end
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end
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end
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