Class: Zold::Wallet

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

Overview

A single wallet

Constant Summary collapse

MAIN_NETWORK =

The name of the main production network. All other networks must have different names.

'zold'.freeze

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ Wallet

Returns a new instance of Wallet.



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# File 'lib/zold/wallet.rb', line 46

def initialize(file)
  @file = file
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/zold/wallet.rb', line 50

def ==(other)
  to_s == other.to_s
end

#add(txn) ⇒ Object 



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# File 'lib/zold/wallet.rb', line 117

def add(txn)
  raise 'The txn has to be of type Txn' unless txn.is_a?(Txn)
  dup = txns.find { |t| t.bnf == txn.bnf && t.id == txn.id }
  raise "The transaction with the same ID and BNF already exists: #{dup}" unless dup.nil?
  raise "The tax payment already exists: #{txn}" if Tax.new(self).exists?(txn)
  File.open(@file, 'a') { |f| f.print "#{txn}\n" }
end

#age ⇒ Object

Age of wallet in hours



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# File 'lib/zold/wallet.rb', line 142

def age
  list = txns
  list.empty? ? 0 : (Time.now - list.min_by(&:date).date) / 60
end

#balance ⇒ Object 



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# File 'lib/zold/wallet.rb', line 92

def balance
  txns.inject(Amount::ZERO) { |sum, t| sum + t.amount }
end

#exists? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/zold/wallet.rb', line 70

def exists?
  File.exist?(@file)
end

#has?(id, bnf) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/zold/wallet.rb', line 125

def has?(id, bnf)
  raise 'The txn ID has to be of type Integer' unless id.is_a?(Integer)
  raise 'The bnf has to be of type Id' unless bnf.is_a?(Id)
  !txns.find { |t| t.id == id && t.bnf == bnf }.nil?
end

#id ⇒ Object 



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# File 'lib/zold/wallet.rb', line 88

def id
  Id.new(lines[2].strip)
end

#income ⇒ Object 



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# File 'lib/zold/wallet.rb', line 135

def income
  txns.each do |t|
    yield t unless t.amount.negative?
  end
end

#init(id, pubkey, overwrite: false, network: 'test') ⇒ Object 



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# File 'lib/zold/wallet.rb', line 78

def init(id, pubkey, overwrite: false, network: 'test')
  raise "File '#{@file}' already exists" if File.exist?(@file) && !overwrite
  raise "Invalid network name '#{network}'" unless network =~ /^[a-z]{4,16}$/
  File.write(@file, "#{network}\n#{VERSION}\n#{id}\n#{pubkey.to_pub}\n\n")
end

#key ⇒ Object 



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# File 'lib/zold/wallet.rb', line 131

def key
  Key.new(text: lines[3].strip)
end

#network ⇒ Object 



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# File 'lib/zold/wallet.rb', line 58

def network
  n = lines[0].strip
  raise "Invalid network name '#{n}'" unless n =~ /^[a-z]{4,16}$/
  n
end

#path ⇒ Object 



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# File 'lib/zold/wallet.rb', line 74

def path
  @file
end

#root? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/zold/wallet.rb', line 84

def root?
  id == Id::ROOT
end

#sub(amount, invoice, pvt, details = '-') ⇒ Object 



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# File 'lib/zold/wallet.rb', line 96

def sub(amount, invoice, pvt, details = '-')
  raise 'The amount has to be of type Amount' unless amount.is_a?(Amount)
  raise "The amount can't be negative: #{amount}" if amount.negative?
  raise 'The pvt has to be of type Key' unless pvt.is_a?(Key)
  prefix, target = invoice.split('@')
  tid = max + 1
  raise 'Too many transactions already, can\'t add more' if max > 0xffff
  txn = Txn.new(
    tid,
    Time.now,
    amount * -1,
    prefix,
    Id.new(target),
    details
  )
  txn = txn.signed(pvt, id)
  raise 'This is not the private right key for this wallet' unless Signature.new.valid?(key, id, txn)
  add(txn)
  txn
end

#to_s ⇒ Object 



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# File 'lib/zold/wallet.rb', line 54

def to_s
  id.to_s
end

#txns ⇒ Object 



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# File 'lib/zold/wallet.rb', line 147

def txns
  lines.drop(5)
    .each_with_index
    .map { |line, i| Txn.parse(line, i + 6) }
    .sort_by(&:date)
end

#version ⇒ Object 



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# File 'lib/zold/wallet.rb', line 64

def version
  v = lines[1].strip
  raise "Invalid version name '#{v}'" unless v =~ /^[0-9]+(\.[0-9]+){1,2}$/
  v
end