// Hack for SAP Application Studio
process.env['http_proxy'] = ''
process.env['https_proxy'] = ''
process.env['HTTP_PROXY'] = ''
process.env['HTTPS_PROXY'] = ''

const diff = (obj1, obj2) => Object.keys(obj1).reduce((res, curr) => (obj1[curr] === obj2[curr] ? res : (res[curr] = obj2[curr]) && res), {})

const queriesToUpdateDifferences = (entity, ownEntries, otherEntries) =>
  ownEntries
    .map(ownEntry => {
      const otherEntry = otherEntries.find(otherEntry => Object.keys(entity.keys).reduce((res, curr) => res && otherEntry[curr] === ownEntry[curr], true))
      if (otherEntry) {
        const differences = diff(ownEntry, otherEntry)
        if (Object.keys(differences).length) {
          return UPDATE(entity)
            .set(differences)
            .where(Object.keys(entity.keys).reduce((res, curr) => (res[curr] = ownEntry[curr]) && res, {}))
        }
      }
    })
    .filter(el => el)

module.exports = { diff, queriesToUpdateDifferences }