feat: new configuration system (and schema) (#2819)

script/generate_tls_certificate.rb

@@ -3,21 +3,24 @@
 require File.expand_path("../lib/postal/config", __dir__)
 require "openssl"
 
-unless File.exist?(Postal.smtp_private_key_path)
+key_path = Postal::Config.smtp_server.tls_private_key_path
+cert_path = Postal::Config.smtp_server.tls_certificate_path
+
+unless File.exist?(key_path)
   key = OpenSSL::PKey::RSA.new(2048).to_s
-  File.write(Postal.smtp_private_key_path, key)
-  puts "Created new private key for encrypting SMTP connections"
+  File.write(key_path, key)
+  puts "Created new private key for encrypting SMTP connections at #{key_path}"
 end
 
-unless File.exist?(Postal.smtp_certificate_path)
+unless File.exist?(cert_path)
   cert = OpenSSL::X509::Certificate.new
   cert.subject = cert.issuer = OpenSSL::X509::Name.parse("/C=GB/O=Test/OU=Test/CN=Test")
   cert.not_before = Time.now
   cert.not_after = Time.now + (365 * 24 * 60 * 60)
-  cert.public_key = Postal.smtp_private_key.public_key
+  cert.public_key = SMTPServer::Server.tls_private_key.public_key
   cert.serial = 0x0
   cert.version = 2
-  cert.sign Postal.smtp_private_key, OpenSSL::Digest.new("SHA256")
-  File.write(Postal.smtp_certificate_path, cert.to_pem)
-  puts "Created new self signed certificate for encrypting SMTP connections"
+  cert.sign SMTPServer::Server.tls_private_key, OpenSSL::Digest.new("SHA256")
+  File.write(cert_path, cert.to_pem)
+  puts "Created new self signed certificate for encrypting SMTP connections at #{cert_path}"
 end