convertNDJSON.rb

require 'json'
require 'pry'

# FHIR_SERVER_BASE = "http://localhost:8080/plan-net"
FHIR_SERVER_BASE = "http://davinci-plan-net-ri.logicahealth.org/plan-net"
#FHIR_SERVER_BASE = "https://plan-net-ri.davinci.hl7.org"
    
ndouts = []
FileUtils.mkdir_p("export/")
Dir.glob("output/*") do |typedir|
    puts "working on input directory: #{typedir}..."
    resourceType = File.basename(typedir)
    url = "#{FHIR_SERVER_BASE}/resources/#{resourceType}.ndjson"
    ndouts << {
        "type" => resourceType,
        "url" => url
    }
    outfile = "export/#{resourceType}.ndjson"
    puts "writing to #{outfile}"
    o = File.open(outfile,"w")
    Dir.glob("#{typedir}/*.json") do |jsonfile|
        puts "working on: #{jsonfile}"
        s = File.read(jsonfile)
        h = JSON.parse(s)
        o.puts(JSON.generate(h))
    end
    o.close
end
output = {
    "transactionTime" => Time.now.strftime("%d/%m/%Y %H:%M"),
    "request" => "#{FHIR_SERVER_BASE}/fhir/$export",
    "requiresAccessToken" => false,
    "output" => ndouts,
    "error" => { "type" => "OperationOutcome",
                "url" =>  "http://serverpath2/err_file_1.ndjson"}
}
export = File.open("export/export.json","w")
export.write(JSON.pretty_generate(output))
puts("Files written to /export")