DependencyInjection.stencil

import Dispatch

public typealias Provider<E> = () -> E

class Container {

    {% for type in types.all %}
    {% if type|annotated:"singleton" %}
    private let {{type.name|lowerFirstWord}}Queue = DispatchQueue(label: "singleton:{{type.name|lowerFirstWord}}")
    private var __{{type.name|lowerFirstWord}}: {{type.name}}?

    public func {{type.name|lowerFirstWord}}() -> {{type.name}} {
    	return {{type.name|lowerFirstWord}}Queue.sync {
    		let res = __{{type.name|lowerFirstWord}} ?? _{{type.name|lowerFirstWord}}()
    		self.__{{type.name|lowerFirstWord}} = res
    		return res
    	}
    }
    {% else %}
    public func {{type.name|lowerFirstWord}}() -> {{type.name}} {
    	return _{{type.name|lowerFirstWord}}()
    }
    {% endif %}

    private func _{{type.name|lowerFirstWord}}() -> {{type.name}} {
    	{% for ini in type.initializers|annotated:"inject" %}
    	return {{type.name}}(
    		{% for param in ini.parameters %}
    		{% if param.typeName.name|hasPrefix:"Provider<" %}
    		{{param.argumentLabel}}: {{param.typeName.name|replace:"Provider<",""|replace:">",""|lowerFirstWord}}
    		{% else %}
    		{{param.argumentLabel}}: {{param.typeName.name|lowerFirstWord}}(){% if not forloop.last%},{% endif %}
    		{% endif %}
    		{% endfor %}
    	)
    	{% endfor %}
    }

    {% endfor %}
}