add-2016-term-to-romanian-P39s

#!/bin/env ruby

require 'csv'
require 'rest-client'

#-----------------------------------------------------------------------
# Find all Memberships of the Romanian Chamber of Deputies with a start
# time after December 2016 and add a 2016-20 term qualifier if missing.
#
# The output of this can then be passed to PositionStatements
#   https://github.com/everypolitician/position_statements
#-----------------------------------------------------------------------

WIKIDATA_SPARQL_URL = 'https://query.wikidata.org/sparql'

def sparql(query)
  result = RestClient.get WIKIDATA_SPARQL_URL, accept: 'text/csv', params: { query: query }
  CSV.parse(result.body, headers: true, header_converters: :symbol)
rescue RestClient::Exception => e
  raise "Wikidata query #{query} failed: #{e.message}"
end

memberships_query = <<SPARQL
  SELECT ?item ?ps
  {
    ?item p:P39 ?ps .
    ?ps ps:P39/wdt:P279* wd:Q17556530 ; pq:P580 ?start .
    FILTER (?start >= "2016-12-19T00:00:00Z"^^xsd:dateTime)
    FILTER NOT EXISTS { ?ps pq:P2937 wd:Q28726607 }
    SERVICE wikibase:label { bd:serviceParam wikibase:language "en" . }
  }
SPARQL

sparql(memberships_query).map(&:to_h).each do |row|
  puts [row[:item].split('/').last, "P39", row[:ps].split('/').last, 'P2937', 'Q28726607'].join("\t")
end