# frozen_string_literal: true

require "json"
require "net/http"
require "securerandom"

class Electrum
	def initialize(rpc_uri:, rpc_username:, rpc_password:)
		@rpc_uri = URI(rpc_uri)
		@rpc_username = rpc_username
		@rpc_password = rpc_password
	end

	def getaddresshistory(address)
		rpc_call(:getaddresshistory, address: address)["result"]
	end

protected

	def rpc_call(method, params)
		JSON.parse(post_json(
			jsonrpc: "2.0",
			id: SecureRandom.hex,
			method: method.to_s,
			params: params
		).body)
	end

	def post_json(data)
		req = Net::HTTP::Post.new(@rpc_uri, "Content-Type" => "application/json")
		req.basic_auth(@rpc_username, @rpc_password)
		req.body = data.to_json
		Net::HTTP.start(
			@rpc_uri.hostname,
			@rpc_uri.port,
			use_ssl: @rpc_uri.scheme == "https"
		) do |http|
			http.request(req)
		end
	end
end