Internal changes in gen-config.

Most data are now read from service files instead of the process’
environment. Some environment variables are still being used to identify
the target service, however.

src/gen-config.cr

@@ -8,10 +8,16 @@ def sanitize_path(path)
 end
 
 module GenConfig
+	alias Variables =
+		String |
+		Array(String) | Array(Variables) |
+		Hash(String, String) | Hash(String, Variables) |
+		Crinja::Callable::Instance
+
 	def self.parse_options(unparsed : Array(String))
 		options = ARGV.map(&.split '=')
 
-		hash = Hash(String, String | Array(String) | Crinja::Callable::Instance | Hash(String, String)).new
+		hash = Hash(String, Variables).new
 
 		options.each do |entry|
 			key, value = entry
@@ -41,7 +47,10 @@ class GenConfig::Context
 	def initialize(@root)
 	end
 
-	def generate(template, target : String, options : Hash(String, String | Array(String) | Crinja::Callable::Instance | Hash(String, String)))
+	def generate(template, target : String, options : Hash(String, Variables))
+		ServiceDefinition.load SERVICES_DIRECTORY
+		Service.load RC_DIRECTORY
+
 		target_file = File.open target, "w"
 
 		sources = [
@@ -65,12 +74,37 @@ class GenConfig::Context
 			raise Exception.new "Could not find template to generate file ('#{target}')."
 		end
 
-		options["id"] = ENV["SERVICE_ID"]? || ""
-		options["environment"] = ENV["ENVIRONMENT"]? || ""
+		pp ENV["SERVICE_ID"]?
+		if service_id = ENV["SERVICE_ID"]?
+			if service = Service.get_by_id service_id
+				environment = service.environment
+
+				options["id"] = service.full_id
+				options["name"] = service.name
+
+				options["environment"] = environment.name
+
+				providers = Hash(String, Variables).new
+				service.providers.each do |token, provider|
+					provider = Service.get_by_id provider
+
+					next unless provider
+
+					providers[token] = Hash(String, String).new.tap do |entry|
+						entry["name"] = provider.name
+						entry["id"] = provider.full_id
+						entry["environment"] = provider.environment.name
+					end
+				end
+				options["providers"] = providers
+			end
+		end
+
 		options["port"] = Crinja.function do
 			service = (arguments.varargs[0]? || "").to_s.gsub /\//, ':'
 			`get-port #{service}`.chomp
 		end
+
 		options["random_password"] = Crinja.function do
 			id = (arguments.varargs[0]? || options["id"]).to_s
 			password_id = arguments.varargs[1]? || "main"