# encoding: UTF-8
#
# Copyright (c) 2010-2017 GoodData Corporation. All rights reserved.
# This source code is licensed under the BSD-style license found in the
# LICENSE file in the root directory of this source tree.

require_relative 'base_action'

module GoodData
  module LCM2
    class SynchronizeSchedules < BaseAction
      DESCRIPTION = 'Synchronize ETL (CC/Ruby) Processes Schedules'

      PARAMS = define_params(self) do
        description 'Client Used for Connecting to GD'
        param :gdc_gd_client, instance_of(Type::GdClientType), required: true

        description 'Client used to connecting to development domain'
        param :development_client, instance_of(Type::GdClientType), required: true

        description 'Synchronization Info'
        param :synchronize, array_of(instance_of(Type::SynchronizationInfoType)), required: true, generated: true

        description 'Schedule Additional Parameters'
        param :additional_params, instance_of(Type::HashType), required: false, deprecated: true, replacement: :schedule_additional_params

        description 'Schedule Additional Secure Parameters'
        param :additional_hidden_params, instance_of(Type::HashType), required: false, deprecated: true, replacement: :schedule_additional_hidden_params

        description 'Schedule Additional Parameters'
        param :schedule_additional_params, instance_of(Type::HashType), required: false

        description 'Schedule Additional Secure Parameters'
        param :schedule_additional_hidden_params, instance_of(Type::HashType), required: false

        description 'Logger'
        param :gdc_logger, instance_of(Type::GdLogger), required: true
      end

      RESULT_HEADER = [
        :from,
        :to,
        :process_name,
        :schedule_name,
        :type,
        :state
      ]

      class << self
        def call(params)
          results = []

          client = params.gdc_gd_client
          development_client = params.development_client

          schedule_additional_params = params.schedule_additional_params || params.additional_params
          schedule_additional_hidden_params = params.schedule_additional_hidden_params || params.additional_hidden_params

          params.synchronize.peach do |info|
            from_project = info.from
            to_projects = info.to

            from = development_client.projects(from_project) || fail("Invalid 'from' project specified - '#{from_project}'")
            has_cycle_trigger = exist_cycle_trigger(from)
            to_projects.peach do |entry|
              pid = entry[:pid]
              to_project = client.projects(pid) || fail("Invalid 'to' project specified - '#{pid}'")

              params.gdc_logger.info "Transferring Schedules, from project: '#{from.title}', PID: '#{from.pid}', to project: '#{to_project.title}', PID: '#{to_project.pid}'"
              res = GoodData::Project.transfer_schedules(from, to_project, has_cycle_trigger).sort_by do |item|
                item[:status]
              end

              results += res.map do |item|
                schedule = item[:schedule]

                # TODO: Review this and remove if not required or duplicate (GOODOT_CUSTOM_PROJECT_ID vs CLIENT_ID)
                # s.update_params('GOODOT_CUSTOM_PROJECT_ID' => c.id)
                # s.update_params('CLIENT_ID' => c.id)
                # s.update_params('SEGMENT_ID' => segment.id)
                schedule.update_params(schedule_additional_params || {})
                schedule.update_hidden_params(schedule_additional_hidden_params || {})
                schedule.disable
                schedule.save

                {
                  from: from.pid,
                  to: to_project.pid,
                  process_name: item[:process].name,
                  schedule_name: schedule.name,
                  type: item[:process].type,
                  state: item[:state]
                }
              end
            end
          end

          # Return results
          results
        end

        private

        def exist_cycle_trigger(project)
          schedules = project.schedules
          triggers = {}
          schedules.each do |schedule|
            triggers[schedule.obj_id] = schedule.trigger_id if schedule.trigger_id
          end

          triggers.each do |schedule_id, trigger_id|
            checking_id = trigger_id
            if checking_id == schedule_id
              return true
            else
              max_step = triggers.length
              count = 1
              loop do
                checking_id = triggers[checking_id]
                count += 1
                break if !checking_id || count > max_step

                return true if checking_id == schedule_id
              end
            end
          end

          false
        end
      end
    end
  end
end