package main

import (
	"fmt"
	"git.chromaticdragon.app/kistaro/auctionsim/auctionsim"
	"log"
	"math"
	"os"
	"strconv"
)

func deltaStr(delta float64) string {
	if delta > 0 {
		return fmt.Sprintf("gained ¤%f", delta)
	}
	if delta < 0 {
		return fmt.Sprintf("lost ¤%f", -delta)
	}
	return "broken even"
}

func main() {
	num := int64(1000)
	if len(os.Args) > 1 {
		n, err := strconv.ParseInt(os.Args[1], 0, 64)
		if err != nil {
			log.Fatalf("can't parse %q as a number of bidders: %v", os.Args[1], err)
		}
		num = n
	}
	if num <= 1 {
		log.Fatalf("can't run an auction with %d bidders", num)
	}

	result := auctionSim.Summarize(auctionsim.RunAuctionVerbosely(
		&auctionsim.CappedBidderGenerator{
			G:   auctionsim.NormalestBidderGenerator(),
			Lim: num,
		},
	))
	fmt.Printf("The auction winner paid ¤%f. They have %s.\n", summary.Price, deltaStr(summary.WinnerProfit))
	fmt.Printf("The item was worth ¤%f to them.\n", summary.WinnerValue)
	fmt.Printf("They would have paid up to ¤%f for it.\n", summary.WinnerMaxBid)

	fmt.Println()
	if summary.LosersWithRegrets < 1 {
		fmt.Println("The item was not worth that to anybody.")
	} else {
		fmt.Printf("The item was worth that to %d bidders, who stopped bidding too soon.\n", summary.LosersWithRegrets)
	}

	fmt.Println()
	if summary.HighestValueRank > summary.Bidders {
		fmt.Println("Wow! It was infinitely beyond worthless to everybody.")
	} else {
		fmt.Printf("The bidder who would have gotten the most value was outbid by %d bidders.\n", summary.HighestValueRank-1)
		fmt.Printf("The item was worth at most ¤%f to them. Their maximum bid was ¤%f.\n", summary.HighestValue, summary.HighestValuatorBid)
		fmt.Printf("If they had paid the winning bid, they would have %s.\n", deltaStr(summary.MissedProfit))
		fmt.Printf("They valued it ¤%f more than the winning bidder.\n", summary.ValueDelta)
	}
}