railpack

1package cli2 3import (4	"context"5	"encoding/json"6	"os"7	"path/filepath"8 9	"github.com/charmbracelet/log"10	"github.com/urfave/cli/v3"11)12 13var PlanCommand = &cli.Command{14	Name:                  "plan",15	Aliases:               []string{"p"},16	Usage:                 "generate a build plan for a directory",17	ArgsUsage:             "DIRECTORY",18	EnableShellCompletion: true,19	Flags: append([]cli.Flag{20		&cli.StringFlag{21			Name:    "out",22			Aliases: []string{"o"},23			Usage:   "output file name",24		},25	}, commonPlanFlags()...),26	Action: func(ctx context.Context, cmd *cli.Command) error {27		buildResult, _, _, err := GenerateBuildResultForCommand(cmd)28		if err != nil {29			return cli.Exit(err, exitCodeForError(err))30		}31 32		// Include $schema in the generated plan JSON for editor support33		planMap, err := addSchemaToPlanMap(buildResult.Plan)34		if err != nil {35			return cli.Exit(err, ExitCodeFailure)36		}37		serializedPlan, err := json.MarshalIndent(planMap, "", "  ")38		if err != nil {39			return cli.Exit(err, ExitCodeFailure)40		}41		buildResultString := serializedPlan42 43		output := cmd.String("out")44		if output == "" {45			// Write to stdout if no output file specified46			_, _ = os.Stdout.Write([]byte(buildResultString))47			_, _ = os.Stdout.Write([]byte("\n"))48			return nil49		} else {50			if err := os.MkdirAll(filepath.Dir(output), 0755); err != nil {51				return cli.Exit(err, ExitCodeFailure)52			}53 54			err = os.WriteFile(output, []byte(buildResultString), 0644)55			if err != nil {56				return cli.Exit(err, ExitCodeFailure)57			}58 59			log.Infof("Plan written to %s", output)60		}61 62		return nil63	},64}65