require 'captivus/util'
require 'json-schema'

module Captivus
  class Payload
    SCHEMA = {
      'type' => 'object',
      'properties' => {
        'notifier' => {
          'type' => 'object',
          'required' => true,
          'properties' => {
            'name' => {'type' => 'string', 'required' => true},
            'version' => {'type' => 'string', 'required' => true},
            'language' => {'type' => 'string', 'required' => true}
          }
        },
        'event' => {
          'type' => 'object',
          'required' => true,
          'properties' => {
            'type' => {'type' => 'string', 'required' => true},
            'message' => {'type' => 'string', 'required' => true},
            'timestamp' => {'type' => 'string', 'required' => true, 'format' => 'date-time'}
          }
        },
        'backtrace' => {
          'type' => 'array',
          'required' => true,
          'items' => {
            'type' => 'object',
            'properties' => {
              'file' => {'type' => 'string', 'required' => true},
              'number' => { 'type' => 'integer', 'required' => true},
              'method' => {'type' => 'string'}
            }
          }
        },
        'context' => {
          'type' => 'object',
          'properties' => {
            'controller' => {'type' => 'string'},
            'action' => {'type' => 'string'},
            'params' => {'type' => 'object'}
          }
        },
        'environment' => {
          'type' => 'object',
          'required' => true,
          'properties' => {
            'name' => {'type' => 'string', 'required' => true}
          }
        }
      }
    }

    def initialize(json)
      JSON::Validator.validate! SCHEMA, json
      @json = json
    end

    def as_json(*)
      Captivus::Util.json_to_hash json
    end

    def to_json(*)
      json.dup
    end

    def ==(other)
      other.is_a?(Payload) && json == other.json
    end

    protected

    attr_reader :json
  end
end