require "commands/status"
require "db/mongo/models/project"
require "workers/project_test_worker"
require "app/api2/parsers/project"
require "lib/project/type/types_factory"
require "lib/executors/server_executor"
require "workers/delete_server_worker"
require_relative "../helpers/version_2.rb"
require_relative "request_handler"

module Devops
  module API2_0
    module Handler
      class Project < RequestHandler

        set_parser Devops::API2_0::Parser::ProjectParser

        include Devops::API2_0::Helpers

        extend StatusCommands

        def project_types
          Devops::TypesFactory.types_names
        end

        def projects
          Devops::Db.connector.projects(nil, nil, parser.projects, parser.archived_projects)
        end

        def project id
          Devops::Db.connector.project(id)
        end

        def project_deploy_envs(id)
          project = Devops::Db.connector.project(id)
          project.deploy_envs
        end

        def project_deploy_env(project_id, env)
          project = Devops::Db.connector.project(project_id)
          project.deploy_env(env)
        end

        def project_servers id
          Devops::Db.connector.project(id)
          Devops::Db.connector.servers(id, parser.project_servers)
        end

        def project_stacks id
          # check if project exists
          Devops::Db.connector.project(id)
          options = {project: id}
          deploy_env = parser.project_stacks
          options[:deploy_env] = deploy_env if deploy_env
          Devops::Db.connector.stacks(options)
        end

        def create_project
          p = parser.create_project
          raise InvalidRecord.new("Project '#{p.id}' already exist") if Devops::Db.connector.is_project_exists?(p)

          p.deploy_envs.each do |env|
            env.add_users [parser.current_user]
          end
          res = p.create
          info = if p.multi?
            "Project '#{p.id}' with type 'multi' created"
          else
            "Project '#{p.id}' created."
          end
#          info << " " + res[:before] if res[:before]
#          info << " " + res[:after] if res[:after]
          info
        end

        def set_project_components id
          body = parser.set_project_components
          project = Devops::Db.connector.project(id)
          project.components = body["components"]
          project.validate_components
          Devops::Db.connector.project_update_field id, "components", body["components"]
          "Updated project '#{project.id}' with components '#{body["components"].inspect}'"
        end

        def add_deploy_env id
          project = Devops::Db.connector.project(id)
          env = parser.add_deploy_env
          env.add_users [parser.current_user]
          env.validate!
          begin
            db_env = project.deploy_env(env.identifier)
            raise InvalidRecord.new("Can not add new environment for project '#{id}'. Environment '#{env.identifier}' already exist")
          rescue RecordNotFound => e
            res = project.add_deploy_env env
            return "Deploy environment '#{env.identifier}' has been added to project '#{project.id}'." + res, env
          end
        end

        def update_deploy_env_field id, deploy_env, field
          project = Devops::Db.connector.project(id)
          db_env = project.deploy_env(deploy_env)
          value = parser.update_deploy_env_field
          if db_env.respond_to?(field + "=")
            if field == "identifier"
              db_env.rename id, value
              "Environment '#{deploy_env}' has been renamed to '#{value}'"
            else
              db_env.update_field(id, field, value)
              "Environment's field '#{field}' has been updated"
            end
          else
            raise RecordNotFound.new("Field '#{field}' does not exist")
          end
        end

        def update_deploy_env id, deploy_env
          project = Devops::Db.connector.project(id)
          db_env = project.deploy_env(deploy_env)
          env = parser.update_deploy_env
          env.identifier = deploy_env if env.identifier.nil?
          begin
            unless env.identifier == deploy_env
              servers = Devops::Db.connector.servers_by_project_and_deploy_env(id, deploy_env)
              raise InvalidRecord.new("Environment '#{deploy_env}' can't be updated: it has #{servers.size} running servers.") unless servers.empty?
            end
            begin
              project.deploy_env(env.identifier)
              raise InvalidRecord.new("Environment '#{deploy_env}' can't be renamed to '#{env.identifier}', environment '#{env.identifier}' already exists") unless deploy_env == env.identifier
            rescue RecordNotFound => e
            end
            env.validate!
            project.delete_deploy_env(deploy_env)
            project.add_deploy_env(env)
            "Deploy environment '#{deploy_env}' has been updated in project '#{project.id}'"
          rescue RecordNotFound => e
            env.identifier = deploy_env
            res = project.add_deploy_env env
            "Deploy environment '#{env.identifier}' has been added to project '#{project.id}'." + res
          end
        end

        def delete_deploy_env id, deploy_env
          project = Devops::Db.connector.project(id)
          servers = Devops::Db.connector.servers_by_project_and_deploy_env(id, deploy_env)
          raise InvalidRecord.new("Can not delete environment '#{deploy_env}', there are #{servers.size} servers on it") unless servers.empty?
          project.delete_deploy_env(deploy_env)
        end

        def update_project id
          body = parser.update
          old_project = Devops::Db.connector.project id
          Devops::Db.connector.project_update id, body
        end

        # TODO: multi project
        def update_project_users id
          deploy_env, users = parser.project_users
          project = Devops::Db.connector.project(id)
          Validators::Helpers::Users.new(users).validate!
          project.add_authorized_user users, deploy_env
          info = "Users '#{users.join("', '")}' has been added to '#{id}' project's authorized users."
          info
        end

        # TODO: multi project
        def delete_project_users id
          deploy_env, users = parser.project_users
          project = Devops::Db.connector.project(id)
          project.remove_authorized_user users, deploy_env
          "Users '#{users.join("', '")}' have been removed from '#{id}' project's authorized users"
        end

        def set_project_run_list id
          list = parser.run_list
          project = Devops::Db.connector.project(id)
          Devops::Db.connector.set_project_run_list id, list
          "Updated project with run_list '#{list.inspect}'"
        end

        def set_project_env_run_list id, deploy_env
          list = parser.run_list
          project = Devops::Db.connector.project(id)
          env = project.deploy_env deploy_env
          Devops::Db.connector.set_project_env_run_list id, deploy_env, list
          "Updated environment '#{env.identifier}' with run_list '#{list.inspect}' in project '#{project.id}'"
        end

        def delete_project id
          deploy_env = parser.delete
          project = Devops::Db.connector.project(id)
          if deploy_env.nil?
            servers = Devops::Db.connector.servers id
            raise DependencyError.new "Deleting project #{id} is forbidden: Project has servers" unless servers.empty?
            project.delete
            "Project '#{id}' is deleted"
          else
            servers = Devops::Db.connector.servers id, deploy_env
            raise DependencyError.new "Deleting deploy_env #{deploy_env} is forbidden: Project has servers" unless servers.empty?
            project.delete_deploy_env(deploy_env)
            "Project '#{id}'. Deploy environment '#{deploy_env}' has been deleted"
          end
        end

        def deploy_project_stream out, id
          # check if project exist
          project = Devops::Db.connector.project(id)
          deploy_env, servers = parser.deploy
          keys = {}
          dbserver = Devops::Db.connector.servers(id, deploy_env, servers, true)
          out << (dbservers.empty? ? "No reserved servers to deploy\n" : "Deploy servers: '#{dbservers.map{|s| s.chef_node_name}.join("', '")}'\n")
          status = []
          deploy_info_buf = {}
          dbservers.each do |s|
            begin
              Devops::Db.connector.check_project_auth s.project, s.deploy_env, parser.current_user
            rescue InvalidPrivileges, RecordNotFound  => e
              out << e.message + "\n"
              status.push 2
              next
            end
            deploy_env_model = project.deploy_env(s.deploy_env)
            deploy_info = if deploy_info_buf[s.deploy_env]
              deploy_info_buf[s.deploy_env]
            else
              # мы не можем указать один build_number для всех окружений, поэтому nil
              deploy_info_buf[s.deploy_env] = project.deploy_info(deploy_env_model, nil)
            end
            status.push(Devops::Executor::ServerExecutor.new(s, out, current_user: parser.current_user).deploy_server(deploy_info))
          end
          status
        end

        def deploy_project id
          # check if project exist
          project_model = Devops::Db.connector.project(id)
          deploy_env, servers = parser.deploy
          files = []
          dbservers = Devops::Db.connector.servers(id, deploy_env, servers, true)
          #out << (dbservers.empty? ? "No reserved servers to deploy\n" : "Deploy servers: '#{dbservers.map{|s| s.chef_node_name}.join("', '")}'\n")
          deploy_info_buf = {}
          dbservers.each do |s|
            begin
              Devops::Db.connector.check_project_auth s.project, s.deploy_env, parser.current_user
            rescue InvalidPrivileges, RecordNotFound  => e
              next
            end

            deploy_env_model = project_model.deploy_env(s.deploy_env)
            deploy_info = if deploy_info_buf[s.deploy_env]
              deploy_info_buf[s.deploy_env]
            else
              # мы не можем указать один build_number для всех окружений, поэтому nil
              deploy_info_buf[s.deploy_env] = project_model.deploy_info(deploy_env_model, nil)
            end

            jid = Worker.start_async(DeployWorker,
              server_attrs: s.to_hash,
              owner: parser.current_user,
              tags: [],
              deploy_info: deploy_info
            )
            files.push jid
          end
          files
        end

        def archive_project id
          project = Devops::Db.connector.project(id)
          Devops::Db.connector.archive_project(id)
          msg = "Project '#{id}' has been archived"
          DevopsLogger.logger.info msg
          msg
        end

        def unarchive_project id
          project = Devops::Db.connector.project(id)
          Devops::Db.connector.unarchive_project(id)
          msg = "Project '#{id}' has been unarchived"
          DevopsLogger.logger.info msg
          msg
        end

        def test_project id, deploy_env
          project = Devops::Db.connector.project(id)
          env = project.deploy_env deploy_env
          DevopsLogger.logger.info "Test project '#{project.id}' and environment '#{env.identifier}'"
          if env.provider == ::Provider::Static::PROVIDER
            msg = "Can not test environment with provider '#{::Provider::Static::PROVIDER}'"
            Logger.warn msg
            raise InvalidRecord.new(msg)
          end

          jid = Worker.start_async(ProjectTestWorker,
            project: project.id,
            deploy_env: env.identifier,
            user: @request.env['REMOTE_USER']
          )

          sleep 1
          return [jid]
        end

        def delete_project_servers(project_id)
          env_id, dry_run = parser.delete_project_servers
          Devops::Db.connector.project(project_id)
          servers = Devops::Db.connector.servers(project_id, env_id)
          info = {to_delete: servers.map(&:id)}
          if !dry_run
            info.merge!(delete_chosen_servers!(servers))
          end
          info
        end

        private

        def delete_chosen_servers!(servers)
          current_user = parser.current_user
          reports = servers.map do |server|
            Worker.start_async(DeleteServerWorker, 'server_id' => server.id, 'current_user' => current_user)
          end
          {reports: reports}
        end

      end
    end
  end
end