92 lines
1.4 KiB
Go
92 lines
1.4 KiB
Go
// For more tutorials: https://blog.learngoprogramming.com
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//
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// Copyright © 2018 Inanc Gumus
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// Learn Go Programming Course
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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//
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package main
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import (
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"encoding/json"
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"fmt"
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"strconv"
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"strings"
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)
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func runCmd(input string, games []game, byID map[int]game) bool {
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fmt.Println()
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cmd := strings.Fields(input)
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if len(cmd) == 0 {
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return true
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}
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switch cmd[0] {
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case "quit":
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return cmdQuit()
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case "list":
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return cmdList(games)
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case "id":
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return cmdByID(cmd, games, byID)
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case "save":
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return cmdSave(games)
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}
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return true
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}
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func cmdQuit() bool {
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fmt.Println("bye!")
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return false
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}
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func cmdList(games []game) bool {
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for _, g := range games {
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printGame(g)
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}
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return true
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}
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func cmdByID(cmd []string, games []game, byID map[int]game) bool {
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if len(cmd) != 2 {
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fmt.Println("wrong id")
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return true
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}
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id, err := strconv.Atoi(cmd[1])
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if err != nil {
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fmt.Println("wrong id")
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return true
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}
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g, ok := byID[id]
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if !ok {
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fmt.Println("sorry. i don't have the game")
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return true
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}
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printGame(g)
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return true
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}
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func cmdSave(games []game) bool {
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// load the data into encodable game values
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var jg []jsonGame
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for _, g := range games {
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jg = append(jg, jsonGame{g.id, g.name, g.genre, g.price})
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}
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out, err := json.MarshalIndent(jg, "", "\t")
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if err != nil {
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fmt.Println("sorry, can't save:", err)
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return true
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}
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fmt.Println(string(out))
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return false
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}
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