class Restforce::Concerns::CompositeAPI::Subrequests

def composite_api_path(path)
  "/services/data/v#{options[:api_version]}/sobjects/#{path}"
end

def create(sobject, reference_id, attrs)
  requests << {
    method: 'POST',
    url: composite_api_path(sobject),
    body: attrs,
    referenceId: reference_id
  }
end

def destroy(sobject, reference_id, id)
  requests << {
    method: 'DELETE',
    url: composite_api_path("#{sobject}/#{id}"),
    referenceId: reference_id
  }
end

def find(sobject, reference_id, id)
  requests << {
    method: 'GET',
    url: composite_api_path("#{sobject}/#{id}"),
    referenceId: reference_id
  }
end

def initialize(options)
  @options = options
  @requests = []
end

def update(sobject, reference_id, attrs)
  id = attrs.fetch(attrs.keys.find { |k, _v| k.to_s.casecmp?('id') }, nil)
  raise ArgumentError, 'Id field missing from attrs.' unless id
  attrs_without_id = attrs.reject { |k, _v| k.to_s.casecmp?('id') }
  requests << {
    method: 'PATCH',
    url: composite_api_path("#{sobject}/#{id}"),
    body: attrs_without_id,
    referenceId: reference_id
  }
end

def upsert(sobject, reference_id, ext_field, attrs)
  raise ArgumentError, 'External id field missing.' unless ext_field
  ext_id = attrs.fetch(attrs.keys.find do |k, _v|
    k.to_s.casecmp?(ext_field.to_s)
  end, nil)
  raise ArgumentError, 'External id missing from attrs.' unless ext_id
  attrs_without_ext_id = attrs.reject { |k, _v| k.to_s.casecmp?(ext_field) }
  requests << {
    method: 'PATCH',
    url: composite_api_path("#{sobject}/#{ext_field}/#{ext_id}"),
    body: attrs_without_ext_id,
    referenceId: reference_id
  }
end