require 'net/http'
require 'uri'
require 'json'

def fetch_data
  # API configuration
  base_url = 'https://exchangegrid.api.mapwale.com/v1'
  params = {
    'region' => 'YOUR_REGION'  # Replace with actual region value
  }
  headers = {
    'Content-Type' => 'application/json',
  }
  query_params = {"show":"all","list":"USD,INR,JPY,BTC,DOGE"}
  
  begin
    # Build URL
    url = base_url
    ["region"].each do |param|
      url += "/#{URI.encode_www_form_component(params[param])}"
    end
    
    # Add query parameters
    uri = URI(url)
    uri.query = URI.encode_www_form(query_params)
    
    # Create HTTP client
    http = Net::HTTP.new(uri.host, uri.port)
    http.use_ssl = uri.scheme == 'https'
    
    # Create request
    request = case 'GET'
             when 'POST'
               Net::HTTP::Post.new(uri)
             when 'PUT'
               Net::HTTP::Put.new(uri)
             when 'DELETE'
               Net::HTTP::Delete.new(uri)
             else
               Net::HTTP::Get.new(uri)
             end
    
    # Set body for POST/PUT requests
    if ['POST', 'PUT'].include?('GET')
      request.body = {}.to_json
    end
    
    # Send request
    response = http.request(request)
    
    # Check for errors
    unless response.is_a?(Net::HTTPSuccess)
      raise "HTTP error! status: #{response.code}"
    end
    
    JSON.parse(response.body)
  rescue StandardError => e
    puts "Error: #{e.message}"
    nil
  end
end

# Example usage
result = fetch_data
puts JSON.pretty_generate(result) if result