package main

import (
	"fmt"
	"net/http"
	"os"
	"strconv"

	"darjeeling.systemec.nl/rhouben/fibonacci/functions"
)

func MyFibonacci(count int) (fibonaccivalue int) {
	fibonaccivalue = 1
	var prev_fibonacci int = 0

	for i := 1; i < count; i++ {
		fibonaccivalue += prev_fibonacci
		prev_fibonacci = fibonaccivalue - prev_fibonacci
	}
	return
}

func main() {
	var port_number int
	var error error
	var bind_socket string
	fmt.Println("Hello, world. I'm teaching myself Go.")

	if len(os.Args) <= 1 {
		port_number = 8088
	} else {
		port_number, error = strconv.Atoi(os.Args[1])

		if error != nil {
			fmt.Printf("I had an error trying to parse %s into a number: %s\n",
				os.Args[1],
				error)
			os.Exit(0)
		}
	}
	bind_socket = fmt.Sprintf(":%d", port_number)
	http.HandleFunc("/fibonacci", functions.HttFibonacci)
	fmt.Printf("Listening on port %d...", port_number)
	http.ListenAndServe(bind_socket, nil)
}