#  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.databases
  std: io.murano
  res: io.murano.resources
  sys: io.murano.system
  conf: io.murano.configuration

Name: MySql

Extends:
  - SqlDatabase

Properties:
  instance:
    Contract: $.class(res:Instance).notNull()
  database:
    Contract: $.string()
  username:
    Contract: $.string()
  password:
    Contract: $.string()

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

  deploy:
    Body:
      - If: not $.getAttr(deployed, false)
        Then:
          - $._environment.reporter.report($this, 'Creating VM for MySql')
          - $securityGroupIngress:
              - ToPort: 3306
                FromPort: 3306
                IpProtocol: tcp
                External: true
          - $._environment.securityGroupManager.addGroupIngress($securityGroupIngress)
          - $.instance.deploy()
          # Deploy MySql
          - $._environment.reporter.report($this, 'Instance is created. Deploying MySql')
          - $file: sys:Resources.string('deployMySql.sh')
          - conf:Linux.runCommand($.instance.agent, $file)
          - $._environment.reporter.report($this, 'MySql application is installed.')
          - $.setAttr(deployed, true)
          - $._environment.reporter.report($this, 'Creating database and user.')
          - If: $.database != '' and $.database != null
            Then:
              - $.createDatabase($.database)
              - $._environment.reporter.report($this, format('Database {0} created.', $.database))
          - If: $.username != '' and $.username != null
            Then:
              - $.createUser($.username, $.password)
              - If: $.database != '' and $.database != null
                Then:
                  - $.assignUser($.username, $.database)
              - $._environment.reporter.report($this, format('User {0} created.', $.username))
          - If: $.instance.assignFloatingIp
            Then:
              - $host: $.instance.floatingIpAddress
            Else:
              - $host: $.instance.ipAddresses.first()
          - $._environment.reporter.report($this, format('MySQL is available at {0}', $host))

  createDatabase:
    Arguments:
      - database:
          Contract: $.string().notNull()
    Body:
      - $.deploy()
      - $._environment.reporter.report($this, format('Creating {0} database.', $database))

      # Creating Database on MySQL
      - $replacement:
          "%DATABASE%": $database
      - $file: sys:Resources.string('createMySqlDatabase.sh').replace($replacement)
      - conf:Linux.runCommand($.instance.agent, $file)

      - $._environment.reporter.report($this, format('Database {0} created.', $database))

  createUser:
    Arguments:
      - username:
          Contract: $.string().notNull()
      - password:
          Contract: $.string().notNull()
    Body:
      - $.deploy()
      - $._environment.reporter.report($this, format('Creating {0} user.', $username))

      # Creating user on MySQL
      - $replacements:
          "%USER_NAME%": $username
          "%PASSWORD%": $password
      - $file: sys:Resources.string('createMySqlUser.sh').replace($replacements)
      - conf:Linux.runCommand($.instance.agent, $file)

      - $._environment.reporter.report($this, format('User {0} created', $username))

  assignUser:
    Arguments:
      - username:
          Contract: $.string().notNull()
      - database:
          Contract: $.string().notNull()
    Body:
      - $.deploy()
      - $._environment.reporter.report($this, format('Assigning user {0} to database {1}.', $username, $database))

      # Assigning user to MySQL database
      - $replacements:
          "%USER_NAME%": $username
          "%DB_NAME%": $database
      - $file: sys:Resources.string('assignMySqlUser.sh').replace($replacements)
      - conf:Linux.runCommand($.instance.agent, $file)

      - $._environment.reporter.report($this, format('User {0} assigned to database {1}.', $username, $database))

  getConnectionString:
    Arguments:
      - username:
          Contract: $.string().notNull()
      - password:
          Contract: $.string().notNull()
    Body:
      - If: $.instance.assignFloatingIp
        Then:
          - $host: $.instance.floatingIpAddress
        Else:
          - $host: $.instance.ipAddresses.first()
      - Return: format('mysql://{0}@{1}:{2}', $username, $password, $host)