package cmd

import (
	"fmt"
	"os"

	"jxs.me/proto/mps"
)

func readDb() (*mps.TransactionLog, error) {
	source := "txnlog.dat"
	sourceFile, err := os.Open(source)
	if err != nil {
		return nil, err
	}
	defer sourceFile.Close()

	return mps.Parse(sourceFile)
}

func Root(args []string) error {
	if len(args) == 0 {
		return fmt.Errorf(`
Missing Command. Supported options:
balance
users
    `)
	}
	switch args[0] {
	case "users":
		return users(args[1:])
	case "balance":
		return balance(args[1:])
	default:
		return fmt.Errorf("Unknown command: %s", args[0])
	}
}