# frozen_string_literal: true
require 'nokogiri'
require 'date'
require 'active_support/core_ext/hash/conversions'
require 'active_support/inflector/inflections'

class RIXML
  class << self
    def parse(data)
      RIXML.new(Nokogiri::XML(data).root)
    end

    def parse_from_file(filename)
      parse File.read(filename)
    end
  end

  def initialize(document)
    @attrs = Hash.from_xml(document.to_s)
  end

  def product_id
    @attrs.dig('Research', 'Product', 'productID')
  end

  def status
    @attrs.dig('Research', 'Product', 'StatusInfo', 'statusType')&.downcase&.to_sym || :published
  end

  def publication_date
    time_str = @attrs.dig('Research', 'Product', 'StatusInfo', 'statusDateTime') || DateTime.now.to_s
    DateTime.strptime(time_str)
  end

  def authors
    org = @attrs.dig('Research', 'Product', 'Source', 'Organization') || {}
    if org.is_a? Array
      org = org.find { |v| v['primaryIndicator'] == 'Yes' } || org.first
    end
    authors = org.dig('PersonGroup', 'PersonGroupMember') || []
    authors = [authors] unless authors.is_a? Array

    authors.map { |author| parse_info_from_author(author) }
  end

  def report_info
    content = @attrs.dig('Research', 'Product', 'Content')
    {
      title: content['Title'],
      abstract: content['Abstract'],
      synopsis: content['Synopsis'],
      file_name: content['Resource']&.dig('Name'),
      pages: content['Resource']&.dig('Length').to_i
    }
  end

  def context
    context = @attrs.dig('Research', 'Product', 'Context')
    {
      companies: parse_companies_from_context(context),
      sectors: parse_sectors_from_context(context),
      countries: parse_countries_from_context(context)
    }
  end

  private

  def parse_info_from_author(author)
    person = author&.dig('Person')
    {
      name: person['DisplayName'],
      first_name: person['GivenName'],
      middle_name: person['MiddleName'],
      last_name: person['FamilyName'],
      job_title: person['JobTitle'],
      email: person['ContactInfo']&.dig('Email')&.downcase
    }
  end

  def parse_sectors_from_context(context)
    list = context['ProductClassifications'].try(:[], 'SectorIndustry')
    return [] if list.nil?
    list = [list] unless list.is_a? Array
    list.select { |s| s['classificationType'] == 'GICS' }.map do |v|
      { code: v['code'].to_i, focus: v['focusLevel'].try(:downcase) == 'yes' }
    end
  end

  def parse_countries_from_context(context)
    [context['ProductClassifications']&.dig('Country')].flatten.map do |country|
      { code: country['code'].upcase }
    end
  end

  def parse_companies_from_context(context)
    companies = []
    list = context['IssuerDetails'].try(:[], 'Issuer')
    return [] if list.nil?
    list = [list] unless list.is_a? Array
    list.select { |c| c['issuerType'] == 'Corporate' }.each do |company|
      companies << parse_company_info(company)
    end
    companies
  end

  def parse_company_info(company)
    security_ids = company.dig('SecurityDetails', 'Security', 'SecurityID')
    security_ids = [security_ids] unless security_ids.is_a? Array
    ids = security_ids.map do |security_id|
      { security_id['idType'].underscore.to_sym => security_id['idValue'] }
    end.reduce({}, :merge)
    info = { name: (company.dig('IssuerName') || [])['NameValue'] }
    info.merge(ids)
  end
end