require 'fileutils'

module Mobilis
class DockerComposeProjector

def self.port_skip
  return 10
end

def self.project project
  projector = DockerComposeProjector.new project

  services = {}
  project.projects.each_with_index do |service, index|
    services[service.name] = projector.send "#{service.type}_service", service
    if service.links.count > 0 then
      services[service.name]["links"] = service.links.map(&:to_s)
      services[service.name]["depends_on"] = service.links.map(&:to_s)
      service.links.each do |link|
        linked_service = project.project_by_name link
        linked_service.child_env_vars.each do |var|
          services[service.name]["environment"] << var
        end
      end
    end
  end
  {"version" => "3.8", "services" => services}
end

def rails_service service
  attributes = @project.attributes
  keyname = "#{ service.name }_internal_port_no".to_sym
  vars = []
  vars << "RAILS_ENV=production"
  vars << "RAILS_MASTER_KEY=#{ service.rails_master_key }"
  vars << "RAILS_MIN_THREADS=5"
  vars << "RAILS_MAX_THREADS=5"

  database = service.database
  if database then
    vars << "DATABASE_URL=#{ database.url }"
  end

  #vars << "NEW_RELIC_APP_NAME=#{ service.name }"
  #vars << "NEW_RELIC_LICENSE_KEY=#{ attributes[:new_relic_license_key] }"
  #vars << "NEW_RELIC_DISTRIBUTED_TRACING_ENABLED=true"
  {
    "image" => service.docker_image_name,
    "ports" => ["#{ attributes[keyname] }:3000"],
    "environment" => vars,
    "build" => {
      "context" => "./#{ service.name }"
    }
  }
end

def rack_service service
  attributes = @project.attributes
  keyname = "#{ service.name }_internal_port_no".to_sym
  {
    "image" => service.docker_image_name,
    "ports" => ["#{ attributes[keyname] }:9292"],
    "environment" => [],
    "build" => {
      "context" => "./#{ service.name }"
    }
  }
end

def postgresql_service service
  attributes = @project.attributes
  keyname = "#{service.name}_internal_port_no".to_sym
  {
    "image" => "postgres:14.1-alpine",
    "restart" => "always",
    "environment" => service.env_vars,
    "ports" => ["#{ attributes[keyname] }:5432"],
    "volumes" => [
      "#{ service.data_dir }:/var/lib/postgresql/data"
    ],
  }
end

def mysql_service service
  attributes = @project.attributes
  keyname = "#{service.name}_internal_port_no".to_sym
  {
    "image" => "mysql:debian",
    "restart" => "always",
    "environment" => service.env_vars,
    "ports" => ["#{ attributes[keyname] }:3306"],
    "volumes" => [
      "#{ service.data_dir }:/var/lib/mysql"
    ],
  }
end

def redis_service service
  attributes = @project.attributes
  port_key = "#{service.name}_internal_port_no".to_sym
  {
    "image" => "redis:6.2-alpine",
    "restart" => "always",
    "command" => "redis-server --save 20 1 --loglevel warning --requirepass #{ service.password }",
    "environment" => [
    ],
    "ports" => [ "#{ attributes[port_key] }:6379" ],
    "volumes" => [
      "#{ service.data_dir }:/data"
    ],
  }
end

def get_cwd_path
  f = Dir.getwd
  if f[1] == ':' then
    f[1] = f[0].downcase
    f[0] = '/'
  end
  f
end

def initialize project
  @project = project
end


end
end