/*
Copyright (C) 2024 filifa

This program is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with
this program. If not, see <https://www.gnu.org/licenses/>.
*/

package main

import (
	"flag"
	"fmt"
	"log"
	"os"

	"gonum.org/v1/gonum/graph/encoding/dot"
)

func main() {
	f := flag.String("f", "", "graphviz file")
	flag.Parse()

	if *f == "" {
		log.Fatal("-f is required")
	}

	contents, err := os.ReadFile(*f)
	if err != nil {
		log.Fatal(err)
	}

	g := newProjectNetwork()
	err = dot.Unmarshal(contents, g)
	if err != nil {
		log.Fatal(err)
	}

	err = g.calculateTimes()
	if err != nil {
		log.Fatal(err)
	}

	data, err := dot.Marshal(g, "", "", "\t")
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(string(data))
}