module Tangany
  class Resource
    def initialize(client)
      @client = client
    end

    def delete_request(url, headers: {})
      handle_response(client.connection.delete do |request|
        request.url(url)
        request.headers = default_headers.merge(headers)
      end)
    end

    def get_request(url, params: {}, headers: {})
      handle_response(client.connection.get do |request|
        request.url(url)
        request.params = params
        request.headers = default_headers.merge(headers)
      end)
    end

    def patch_request(url, body:, headers: {})
      handle_response(client.connection.patch do |request|
        request.url(url)
        request.body = body
        request.headers = default_headers.merge({"Content-Type" => "application/json-patch+json"}.merge(headers))
      end)
    end

    def post_request(url, body:, headers: {})
      handle_response(client.connection.post do |request|
        request.url(url)
        request.body = body
        request.headers = default_headers.merge(headers)
      end)
    end

    def put_request(url, body:, headers: {})
      handle_response(client.connection.put do |request|
        request.url(url)
        request.body = body
        request.headers = default_headers.merge({"Content-Type" => "application/json-patch+json"}.merge(headers))
      end)
    end

    private

    attr_reader :client

    def build_update_body_json(resource_hash, safe_params)
      merged_hash = resource_hash.deep_merge(safe_params)
      JsonPatch.new(resource_hash, merged_hash).generate.to_json
    end

    def handle_response(response)
      if response.status >= 400
        raise RequestError.new(
          response.body[:message],
          activity_id: response.headers["tangany-activity-id"],
          details: response.body[:details],
          error_code: response.body[:errorCode],
          status_code: response.body[:statusCode],
          validation_errors: response.body[:validationErrors]
        )
      end

      response
    end

    def sanitize_params!(params)
      root_name = self.class.name.split("::")[0...-1].join("::")
      resource_name = self.class.name.split("::").last.gsub("Resource", "")
      action_name = caller_locations(1..1).first.label.camelcase

      contract = "#{root_name}::Contracts::#{resource_name}::#{action_name.camelcase}".constantize

      contract.new.to_safe_params!(params)
    end
  end
end