76 lines
1.3 KiB
Go
76 lines
1.3 KiB
Go
package main
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import (
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"fmt"
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"os"
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"strings"
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)
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var endpoint string = "http://127.0.0.1:8080"
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type Command struct {
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Names []string // aliases: short + long
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Description string
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Handler func(args []string)
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}
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var commands = []Command{
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{
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Names: []string{"login", "l"},
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Description: "Log into the system",
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Handler: func(args []string) {
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fmt.Println("Executing login with args:", args)
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},
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},
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{
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Names: []string{"auth", "authenticate"},
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Description: "Authenticate with a token",
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Handler: authenticateMain,
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},
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}
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func printMainUsage() {
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fmt.Println("Usage:")
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fmt.Println(" upc <command> [options]")
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fmt.Println("\nAvailable commands:")
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for _, cmd := range commands {
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fmt.Printf(" %-20s %s\n", formatNames(cmd.Names), cmd.Description)
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}
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}
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func formatNames(names []string) string {
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return strings.Join(names, ", ")
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}
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func findCommand(name string) *Command {
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for _, cmd := range commands {
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for _, n := range cmd.Names {
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if n == name {
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return &cmd
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}
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}
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}
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return nil
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}
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func main() {
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if len(os.Args) < 2 {
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fmt.Println("Error: missing subcommand")
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printMainUsage()
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os.Exit(1)
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}
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subcommand := os.Args[1]
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cmd := findCommand(subcommand)
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if cmd == nil {
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fmt.Println("Error: unknown command:", subcommand)
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printMainUsage()
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os.Exit(1)
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}
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cmd.Handler(os.Args[2:])
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}
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