#  Licensed under the Apache License, Version 2.0 (the "License"); you may
#  not use this file except in compliance with the License. You may obtain
#  a copy of the License at
#
#       http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#  License for the specific language governing permissions and limitations
#  under the License.

Namespaces:
  =: com.example
  std: io.murano
  sys: io.murano.system
  db: com.example.databases
  srv: com.example.apache
  conf: io.murano.configuration

Name: WordPress

Extends: std:Application

Properties:
  server:
    Contract: $.class(srv:ApacheHttpServer).notNull()
  database:
    Contract: $.class(db:MySql).notNull()
  dbName:
    Contract: $.string().notNull()
  dbUser:
    Contract: $.string().notNull()
  dbPassword:
    Contract: $.string().notNull()
  monitoring:
    Contract: $.class(ZabbixAgent)

Methods:
  .init:
    Body:
      - $._environment: $.find(std:Environment).require()

  deploy:
    Body:
      - If: not $.getAttr(deployed, false)
        Then:
          - $._environment.reporter.report($this, 'Ensuring Apache is deployed.')
          - $.server.deploy()

          # NOTE(ddovbii) This also can be done using the mechanism of contract checks as following:
          # Contract: $.class(srv:ApacheHttpServer).notNull().check($.enablePHP = true)
          # Due to the fact that in case of contract conflicts we can't write a custom error messages
          # to the deployment logs and can't show them to user it is done in this way. As soon as we implement
          # this opportunity this check will be deleted and contract check will be used
          - If: not $.server.enablePHP
            Then:
              - $msg: 'Unable to install WordPress. PHP is not installed on the server'
              - $._environment.reporter.report_error($this, $msg)
              - Throw: DependencyMissingError
                Message: $msg

          # Deploy Wordpress
          - $file: sys:Resources.string('deployWordPress.sh')
          - conf:Linux.runCommand($.server.instance.agent, $file)

          # Configure access to MySql
          - $._environment.reporter.report($this, 'Ensuring Database is deployed.')
          - $.database.createDatabase($.dbName)
          - $.database.createUser($.dbUser, $.dbPassword)
          - $.database.assignUser($.dbUser, $.dbName)
          - $._environment.reporter.report($this, 'Configure access to MySql.')
          - $replacements:
              "%DATABASE%": $.dbName
              "%USERNAME%": $.dbUser
              "%HOST%": $.database.instance.ipAddresses.first()
              "%PASSWORD%": $.dbPassword

          - $file: sys:Resources.string('configureAccessToMySql.sh').replace($replacements)
          - conf:Linux.runCommand($.server.instance.agent, $file)

          - If: $.monitoring != null
            Then:
              - $.monitoring.setUpAgent($.server.instance)

          - $._environment.reporter.report($this, 'Application is installed')
          - If: $.server.instance.assignFloatingIp
            Then:
              - $address: $.server.instance.floatingIpAddress + '/wordpress'
              - $._environment.reporter.report($this, format('Running at http://{0}', $address))
          - $.setAttr(deployed, true)