X402::Payments

gem 'x402-payments'

X402::Payments.configure do |config|
  config.default_pay_to = ENV['X402_PAY_TO']
  config.private_key = ENV['X402_PRIVATE_KEY']

  # Register Polygon Amoy testnet
  config.register_chain(
    name: "polygon-amoy",
    chain_id: 80002,
    standard: "eip155"
  )

  # Register the token for that chain
  config.register_token(
    chain: "polygon-amoy",
    symbol: "USDC",
    address: "0x41E94Eb019C0762f9Bfcf9Fb1E58725BfB0e7582",
    decimals: 6,
    name: "USD Coin",
    version: "2"
  )

  # Set the RPC URL for the custom chain
  config.rpc_urls["polygon-amoy"] = "https://bitter-attentive-pool.matic-amoy.quiknode.pro"

  config.chain = "polygon-amoy"
  config.currency = "USDC"
end

X402::Payments.configure do |config|
  config.default_pay_to = ENV['X402_PAY_TO']
  config.private_key = ENV['X402_PRIVATE_KEY']

  # Accept WETH on Base instead of USDC
  config.register_token(
    chain: "base",
    symbol: "WETH",
    address: "0x4200000000000000000000000000000000000006",
    decimals: 18,
    name: "Wrapped Ether",
    version: "1"
  )

  config.chain = "base"
  config.currency = "WETH"
end

X402::Payments.generate_header(
  amount: 0.001,
  resource: "http://example.com/api",
  network: "solana-devnet",
  fee_payer: "CustomFacilitatorFeePayer"  # use different facilitator
)

X402::Payments.configure do |config|
  config.private_key = ENV['X402_PRIVATE_KEY']
  config.default_pay_to = ENV['X402_PAY_TO']
  config.protocol_version = 2  # Default, can be omitted
end

X402::Payments.configure do |config|
  config.private_key = ENV['X402_PRIVATE_KEY']
  config.default_pay_to = ENV['X402_PAY_TO']
  config.protocol_version = 1
end

require 'x402/payments'

# Generate a signed payment header
header = X402::Payments.generate_header(
  amount: 0.001,                                    # Amount in USD
  resource: "http://localhost:3000/api/weather",   # Protected resource URL
  description: "Payment for weather API access",   # Optional description
  pay_to: "0xRecipientAddress"                     # Optional: override recipient (defaults to config)
)

# Use the header in an HTTP request (v2 uses PAYMENT-SIGNATURE, v1 uses X-PAYMENT)
# curl -H "PAYMENT-SIGNATURE: #{header}" http://localhost:3000/api/weather

# config/initializers/x402.rb
X402::Payments.configure do |config|
  config.default_pay_to = ENV['X402_PAY_TO']
  config.private_key = ENV['X402_PRIVATE_KEY']
  config.chain = Rails.env.production? ? 'base' : 'base-sepolia'

  # Optional: Override RPC URLs programmatically
  # config.rpc_urls = {
  #   'base' => 'https://your-custom-base-rpc.com',
  #   'base-sepolia' => 'https://your-sepolia-rpc.com'
  # }
end

# In your controller or service
class PaymentService
  def self.generate_payment_for(resource_url, amount)
    X402::Payments.generate_header(
      amount: amount,
      resource: resource_url,
      description: "Payment for #{resource_url}"
    )
  end
end

#!/usr/bin/env ruby
require 'x402/payments'

# Set environment variables or configure directly
X402::Payments.configure do |config|
  config.default_pay_to = "0xYourDefaultRecipient"
  config.private_key = "0xYourPrivateKeyHere"
  config.chain = "base-sepolia"
  # config.rpc_urls = { 'base-sepolia' => 'https://your-custom-rpc.com' }
end

# Generate payment
header = X402::Payments.generate_header(
  amount: 0.001,
  resource: "http://localhost:3000/api/data",
  # version: 1,                              # Override configured protocol version (1 or 2)
  # network: "avalanche",                    # Override default network
  # private_key: "0xDifferentKey",           # Override default key
  # pay_to: "0xRecipientWalletAddress",      # Override recipient address
)

puts "Payment Header:"
puts header

# v2 (default) uses PAYMENT-SIGNATURE, v1 uses X-PAYMENT
HTTParty.get("http://localhost:3000/api/data", headers: { "PAYMENT-SIGNATURE" => header })