package diego

import (
	"fmt"
	"net/http"
)

type Router struct {
	mux http.ServeMux
}

type InjectionContext struct{}

type InjectionFunction[T any] func(InjectionContext) T

type InjectionToken[T any] struct {
	Name          string
	InjectionFunc InjectionFunction[T]
}

var injectionTokens map[string]any = make(map[string]any)

func Inject[T any](token InjectionToken[T]) T {
	var value = injectionTokens[token.Name]

	if value == nil {
		value = token.InjectionFunc(InjectionContext{})
		injectionTokens[token.Name] = value
	}

	var injection, ok = value.(T)

	if !ok {
		panic(fmt.Sprintf("FATAL ERROR: Tried to inject a value with the wrong type, expected = %T, got = %T", *new(T), value))
	}
	return injection

}

func (r *Router) Start() {
}