Class: Parsbank::DBSetup

Inherits:
Object
  • Object
show all
Defined in:
lib/db_setup.rb

Class Method Summary collapse

Class Method Details

.establish_connection ⇒ Object 



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# File 'lib/db_setup.rb', line 5

def self.establish_connection
  if Parsbank.configuration.database_url.present?
    setup_db
  else
    simulate_db
    puts("\033[31mParsBank ERROR: database_url not set, Transaction history not stored on database\033[0m")
  end
end

.setup_db ⇒ Object 



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# File 'lib/db_setup.rb', line 46

def self.setup_db
  database_url = Parsbank.configuration.database_url
  model = Parsbank.configuration.model
  raise 'DATABASE_URL environment variable is not set' if database_url.nil?

  supported_databases = {
    'postgresql' => 'pg',
    'mysql2' => 'mysql2',
    'sqlite3' => 'sqlite3',
    'nulldb' => 'nulldb'
  }.freeze

  uri = URI.parse(database_url)

  gem_name = supported_databases[uri.scheme]
  unless gem_name
    raise "Unsupported database adapter: #{uri.scheme}. Supported adapters: #{supported_databases.keys.join(', ')}"
  end

  begin
    require gem_name
  rescue LoadError
    raise "Missing required gem for #{uri.scheme}. Please add `gem '#{gem_name}'` to your Gemfile."
  end

  begin
    ActiveRecord::Base.establish_connection(database_url)
    unless ActiveRecord::Base.connection.table_exists?(model.tableize)
      puts 'Create Transaction Table'
      ActiveRecord::Base.connection.create_table model.tableize do |t|
        t.string :gateway
        t.string :amount
        t.string :unit
        t.string :track_id
        t.string :local_id
        t.string :ip
        t.integer :user_id
        t.integer :cart_id
        t.text :description
        t.string :callback_url
        t.text :gateway_verify_response
        t.text :gateway_response
        t.string :status
        t.timestamps
      end
    end

    unless Object.const_defined?(model)
      Object.const_set(model, Class.new(ActiveRecord::Base) do
        self.table_name = model.tableize
      end)
    end
  rescue StandardError => e
    raise "Failed to connect to the database: #{e.message}"
  end
end

.simulate_db ⇒ Object 



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# File 'lib/db_setup.rb', line 14

def self.simulate_db
  model_name = Parsbank.configuration.model || 'Transaction'
  simulated_model = Class.new do
    attr_accessor :description, :amount, :gateway, :callback_url, :status,
                  :user_id, :cart_id, :local_id, :ip, :gateway_verify_response, :gateway_response, :track_id, :unit, :created_at, :updated_at

    def initialize(attributes = {})
      build_attrs attributes.merge({created_at: Time.now})
    end

    def update!(attributes = {})
      build_attrs attributes.merge({updated_at: Time.now})
    end

    def build_attrs attributes = {}
      attributes.each do |key, value|
        send("#{key}=", value)
      end
    end
    def save
      # Simulate saving (e.g., print or log the data)
      @id = Time.now.to_i # Simulate an ID assignment
      true
    end

    attr_reader :id
  end

  # Set the simulated class as a constant
  Object.const_set(model_name.camelcase, simulated_model)
end