module SimpleCsv

# File lib/simple_csv.rb, line 54
def self.converters_initialized?
  @converters_initialized
end

# File lib/simple_csv.rb, line 27
def self.csv_manually_set_headers!
  raise HeadersNotSet,
        ['CSV does not contain headers',
         'please add headers in them manually or in the file'].join(', ')
end

# File lib/simple_csv.rb, line 23
def self.csv_not_enough_headers!
  raise NotEnoughHeaders, 'Not enough headers defined!'
end

# File lib/simple_csv.rb, line 38
def self.generate(path, **options, &block)
  initialize_converters unless converters_initialized?
  Writer.new path, options, &block
end

# File lib/simple_csv.rb, line 48
def self.initialize_converters
  CSV::Converters[:blank_to_nil] = ->(f) { f && f.empty? ? nil : f }
  CSV::Converters[:null_to_nil] = ->(f) { f && f == 'NULL' ? nil : f }
  @converters_initialized = true
end

# File lib/simple_csv.rb, line 33
def self.read(path, **options, &block)
  initialize_converters unless converters_initialized?
  Reader.new path, options, &block
end

# File lib/simple_csv.rb, line 18
def self.row_not_complete!(mtd, value)
  raise RowNotComplete,
        "Row not complete! #{mtd} called twice with value #{value}"
end

# File lib/simple_csv.rb, line 43
def self.transform(path, **options, &block)
  initialize_converters unless converters_initialized?
  Transformer.new path, options, &block
end