79 lines
1.9 KiB
Ruby
79 lines
1.9 KiB
Ruby
# frozen_string_literal: true
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module EmailOperation
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class MetadataMapping < Base
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attr_accessor :metadata_mapping_class
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def initialize(operation:, metadata_mapping_class: ::MetadataMapping)
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@metadata_mapping_class = metadata_mapping_class
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super(operation: operation)
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end
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def process(email)
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metadata_inputs = metadata_inputs(email)
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metadata = metadata_mapping_class.where(input: metadata_inputs).all
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email.organisations = metadata.filter_map(&:organisation).uniq
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email.servers = metadata.filter_map(&:server).uniq
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email
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rescue => ex
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byebug
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end
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private
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def metadata_inputs(email)
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inputs = []
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# add mail addresses and hostnames from headers
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inputs << ["To", "Delivered-To", "X-Original-To", "From", "Subject"].filter_map { |header_name|
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email.header_values(header_name)
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}.flatten.filter_map() { |header_value|
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keep_email_and_hostnames(header_value)
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}.flatten.filter_map() { |value|
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clean_subdomains(value)
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}.flatten
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# add other values from headers
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inputs << ["X-Client-Id", "X-Organisation-Id"].filter_map { |header_name|
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email.header_values(header_name)
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}.flatten.uniq
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inputs.flatten.uniq
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end
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def keep_email_and_hostnames(string)
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results = string.scan(email_and_hostnames_pattern)
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if results.present?
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results.map(&:first)
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end
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end
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def clean_subdomains(value)
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clean_subdomains_patterns.filter_map { |pattern|
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if value.match?(pattern[:search])
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value.gsub!(pattern[:search], pattern[:replace])
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else
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value
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end
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}
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end
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def email_and_hostnames_pattern
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/\b((?:([-a-zA-Z0-9\._]+)@)?((?:[-a-zA-Z0-9\._]*)(?:\.[a-z]{2,})))\b/
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end
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def clean_subdomains_patterns
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[{
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search: /[-a-zA-Z0-9\._]+@([-a-zA-Z0-9]+).evolix.net/,
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replace: '@\1'
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}]
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end
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end
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end
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