Class: Arweave::Transaction

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attributes) ⇒ Transaction

Returns a new instance of Transaction.



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# File 'lib/arweave/transaction.rb', line 7

def initialize(attributes)
  @attributes =
    {
      id: '',
      last_tx: '',
      owner: '',
      tags: [],
      target: '',
      quantity: '0',
      data: '',
      reward: '0',
      signature: ''
    }.merge(attributes).transform_keys!(&:to_sym).yield_self do |hash|
      if hash[:data]
        hash[:data] = Base64.urlsafe_encode64(hash[:data], padding: false)
      end
      hash
    end
end

Instance Attribute Details

#attributes ⇒ Object (readonly)

Returns the value of attribute attributes.



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# File 'lib/arweave/transaction.rb', line 5

def attributes
  @attributes
end

Class Method Details

.anchor ⇒ Object 



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# File 'lib/arweave/transaction.rb', line 75

def anchor
  Api.instance.get_transaction_anchor.body
end

.create_status_object(status, data) ⇒ Object 



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# File 'lib/arweave/transaction.rb', line 110

def create_status_object(status, data)
  status_object = OpenStruct.new(status: status, data: data)

  status_object.instance_eval do
    def accepted?
      status == :accepted
    end

    def pending?
      status == :pending
    end

    def to_s
      status.to_s
    end

    def to_sym
      status
    end
  end

  status_object
end

.data(id) ⇒ Object

Raises:



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# File 'lib/arweave/transaction.rb', line 91

def data(id)
  res = Api.instance.get_transaction_data(id)
  raise TransactionNotFound if res.not_found?

  Base64.urlsafe_decode64(res.body)
end

.find(id) ⇒ Object

Raises:



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# File 'lib/arweave/transaction.rb', line 79

def find(id)
  res = Api.instance.get_transaction(id)
  raise TransactionNotFound if res.not_found?
  data =
    JSON.parse(res.body).transform_keys!(&:to_sym).yield_self do |hash|
      hash[:data] = Base64.urlsafe_decode64(hash[:data]) if hash[:data]
      hash
    end

  new(data)
end

.status(id) ⇒ Object 



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# File 'lib/arweave/transaction.rb', line 98

def status(id)
  res = Api.instance.get_transaction_status(id)
  raise TransactionNotFound if res.not_found?

  create_status_object(
    :accepted,
    JSON.parse(res.body).transform_keys!(&:to_sym)
  )
rescue JSON::ParserError
  create_status_object(:pending, {})
end

Instance Method Details

#add_tag(name:, value:) ⇒ Object 



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# File 'lib/arweave/transaction.rb', line 53

def add_tag(name:, value:)
  attributes[:tags].push(
    {
      name: Base64.urlsafe_encode64(name, padding: false),
      value: Base64.urlsafe_encode64(value, padding: false)
    }
  )

  self
end

#commit ⇒ Object

Raises:



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# File 'lib/arweave/transaction.rb', line 46

def commit
  raise Arweave::TransactionNotSigned if @attributes[:signature].empty?

  Api.instance.commit(self)
  self
end

#sign(wallet) ⇒ Object 



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# File 'lib/arweave/transaction.rb', line 27

def sign(wallet)
  @attributes[:last_tx] = self.class.anchor
  @attributes[:reward] =
    Api.instance.reward(
      @attributes.fetch(:data, '').length,
      @attributes.fetch(:target, nil)
    ).body
  @attributes[:owner] = wallet.owner

  signature = wallet.sign(get_signature_data)
  @attributes[:signature] =
    Base64.urlsafe_encode64 signature, padding: false
  @attributes[:id] =
    Base64.urlsafe_encode64 Digest::SHA256.digest(signature), padding: false

  # TODO: verify signature
  self
end

#tags ⇒ Object 



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# File 'lib/arweave/transaction.rb', line 64

def tags
  attributes[:tags].map do |tag|
    tag.transform_keys!(&:to_sym)
    {
      name: Base64.urlsafe_decode64(tag[:name]),
      value: Base64.urlsafe_decode64(tag[:value])
    }
  end
end