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learngo/25-functions/exercises/refactor-to-funcs-3/main.go

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2019-06-21 12:18:33 +03:00
// For more tutorials: https://blog.learngoprogramming.com
//
// Copyright © 2018 Inanc Gumus
// Learn Go Programming Course
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
//
// ---------------------------------------------------------
// EXERCISE: Refactor the game store to funcs - step #3
//
// Let's continue from the previous exercise. This time,
// you're going to add json encoding and decoding using
// funcs.
//
// 1- Create a new command in a func that encodes the
// game store data to json and terminates the program.
// Lastly, add it to runCmd func.
//
// For more information, see: "Encode" exercise from
// the structs section.
//
// Name : cmdSave
// Inputs: []game
// Output: bool
//
// 2- Refactor the load() to load the games from the
// `data` constant (it's in the games.go as well).
//
// For more information, see: "Decode" exercise from
// the structs section.
//
// ---------------------------------------------------------
package main
import (
"bufio"
"fmt"
"os"
)
func main() {
games := load()
byID := indexByID(games)
fmt.Printf("Inanc's game store has %d games.\n", len(games))
in := bufio.NewScanner(os.Stdin)
for {
fmt.Printf(`
> list : lists all the games
> id N : queries a game by id
> quit : quits
`)
if !in.Scan() || !runCmd(in.Text(), games, byID) {
break
}
}
}