github.com/JarrahG/buffalocli@v0.0.0-20230801092127-b85bfd5d395a/internal/plugins/events.go

package plugins

import (
	"encoding/json"
	"fmt"
	"os"
	"os/exec"
	"strings"
	"sync"

	"github.com/gobuffalo/envy"
	"github.com/gobuffalo/events"
)

const (
	EvtSetupStarted  = "buffalo-plugins:setup:started"
	EvtSetupErr      = "buffalo-plugins:setup:err"
	EvtSetupFinished = "buffalo-plugins:setup:finished"
)

var loadPluginsOnce sync.Once

// Load will add listeners for any plugins that support "events"
func Load() error {
	var errResult error
	loadPluginsOnce.Do(func() {
		// don't send plugins events during testing
		if envy.Get("GO_ENV", "development") == "test" {
			return
		}

		plugs, err := Available()
		if err != nil {
			errResult = err
			return
		}

		for _, cmds := range plugs {
			for _, c := range cmds {
				if c.BuffaloCommand != "events" {
					continue
				}

				err := func(c Command) error {
					n := fmt.Sprintf("[PLUGIN] %s %s", c.Binary, c.Name)
					fn := func(e events.Event) {
						b, err := json.Marshal(e)
						if err != nil {
							fmt.Println("error trying to marshal event", e, err)
							return
						}
						cmd := exec.Command(c.Binary, c.UseCommand, string(b))
						cmd.Stderr = os.Stderr
						cmd.Stdout = os.Stdout
						cmd.Stdin = os.Stdin
						if err := cmd.Run(); err != nil {
							fmt.Println("error trying to send event", strings.Join(cmd.Args, " "), err)
						}
					}
					events.NamedListen(n, events.Filter(c.ListenFor, fn))
					return nil
				}(c)
				if err != nil {
					errResult = err
					return
				}
			}
		}
	})
	return errResult
}