Class: Alphavantage::Client

Inherits:
Object
  • Object
show all
Includes:
HelperFunctions
Defined in:
lib/Client.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from HelperFunctions

#check_argument, #method_missing, #recreate_metadata_key, #return_client, #return_int_val, #return_matype, #return_series, #return_value

Constructor Details

#initialize(key:, verbose: false) ⇒ Client

Returns a new instance of Client.



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

def initialize key:, verbose: false
  check_argument([true, false], verbose, "verbose")
  @apikey = key
  @base_uri = 'https://www.alphavantage.co'
  @verbose = verbose
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class HelperFunctions

Instance Attribute Details

#verbose ⇒ Object

Returns the value of attribute verbose.



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# File 'lib/Client.rb', line 12

def verbose
  @verbose
end

Instance Method Details

#crypto(symbol:, market:, datatype: "json") ⇒ Object 



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# File 'lib/Client.rb', line 62

def crypto(symbol:, market:, datatype: "json")
  Alphavantage::Crypto.new symbol: symbol, key: self, datatype: datatype, market: market
end

#download(url, file) ⇒ Object 



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# File 'lib/Client.rb', line 42

def download(url, file)
  send_url = "#{@base_uri}/query?#{url}&datatype=csv&apikey=#{@apikey}"
  begin
    puts send_url if @verbose
    uri = URI.parse(send_url)
    uri.open{|csv| IO.copy_stream(csv, file)}
  rescue Exception => e
    raise Alphavantage::Error.new message: "Failed to save the CSV file: #{e.message}"
  end
  return "CSV saved in #{file}"
end

#exchange(from:, to:) ⇒ Object 



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# File 'lib/Client.rb', line 58

def exchange(from:, to:)
  Alphavantage::Exchange.new from: from, to: to, key: self
end

#request(url) ⇒ Object 



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# File 'lib/Client.rb', line 19

def request(url)
  send_url = "#{@base_uri}/query?#{url}&apikey=#{@apikey}"
  puts "\n#{send_url}\n" if @verbose
  begin
    response = HTTParty.get(send_url)
  rescue Exception => e
    raise Alphavantage::Error.new message: "Failed request: #{e.message}"
  end
  data = response.body
  begin
    data = JSON.parse(data)
  rescue Exception => e
    raise Alphavantage::Error.new message: "Parsing failed",
      data: data
  end
  if !data["Error Message"].nil?
    raise Alphavantage::Error.new message:  data["Error Message"], data: data
  elsif !data["Information"].nil?
    raise Alphavantage::Error.new message: data["Information"], data: data
  end
  return data
end

#sector ⇒ Object 



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# File 'lib/Client.rb', line 66

def sector
  Alphavantage::Sector.new key: self
end

#stock(symbol:, datatype: "json") ⇒ Object 



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# File 'lib/Client.rb', line 54

def stock(symbol:, datatype: "json")
  Alphavantage::Stock.new symbol: symbol, key: self, datatype: datatype
end