// Main file for nsscash

// Copyright (C) 2019  Simon Ruderich
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

package main

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

func main() {
	flag.Usage = func() {
		fmt.Fprintf(os.Stderr,
			"usage: %[1]s [options] fetch <config>\n"+
				"",
			os.Args[0])
		flag.PrintDefaults()
	}
	flag.Parse()

	args := flag.Args()
	if len(args) == 0 {
		flag.Usage()
		os.Exit(1)
	}

	switch args[0] {
	case "fetch":
		if len(args) != 2 {
			break
		}

	cfg, err := LoadConfig(args[1])
	if err != nil {
		log.Fatal(err)
	}
	state, err := LoadState(cfg.StatePath)
	if err != nil {
		log.Fatal(err)
	}

	err = handleFiles(cfg, state)
	if err != nil {
		log.Fatal(err)
	}

	err = WriteStateIfChanged(cfg.StatePath, state)
	if err != nil {
		log.Fatal(err)
	}

		return
	}

	flag.Usage()
	os.Exit(1)
}