// Copyright 2017 Pulumi, Inc. All rights reserved.

package cmd

import (
	"github.com/spf13/cobra"
)

func newPlanCmd() *cobra.Command {
	var analyzers []string
	var showConfig bool
	var showReplaceSteps bool
	var showUnchanged bool
	var summary bool
	var output string
	var cmd = &cobra.Command{
		Use:     "plan <env> [<package>] [-- [<args>]]",
		Aliases: []string{"dryrun"},
		Short:   "Show a plan to update, create, and delete an environment's resources",
		Long: "Show a plan to update, create, and delete an environment's resources\n" +
			"\n" +
			"This command displays a plan to update an existing environment whose state is represented by\n" +
			"an existing snapshot file.  The new desired state is computed by compiling and evaluating an\n" +
			"executable package, and extracting all resource allocations from its resulting object graph.\n" +
			"This graph is compared against the existing state to determine what operations must take\n" +
			"place to achieve the desired state.  No changes to the environment will actually take place.\n" +
			"\n" +
			"By default, the package to execute is loaded from the current directory.  Optionally, an\n" +
			"explicit path can be provided using the [package] argument.",
		Run: runFunc(func(cmd *cobra.Command, args []string) error {
			info, err := initEnvCmd(cmd, args)
			if err != nil {
				return err
			}
			defer info.Close()
			apply(cmd, info, applyOptions{
				Delete:           false,
				DryRun:           true,
				Analyzers:        analyzers,
				ShowConfig:       showConfig,
				ShowReplaceSteps: showReplaceSteps,
				ShowUnchanged:    showUnchanged,
				Summary:          summary,
				Output:           output,
			})
			return nil
		}),
	}

	cmd.PersistentFlags().StringSliceVar(
		&analyzers, "analyzer", []string{},
		"Run one or more analyzers as part of this deployment")
	cmd.PersistentFlags().BoolVar(
		&showConfig, "show-config", false,
		"Show configuration keys and variables")
	cmd.PersistentFlags().BoolVar(
		&showReplaceSteps, "show-replace-steps", false,
		"Show detailed resource replacement creates and deletes; normally shows as a single step")
	cmd.PersistentFlags().BoolVar(
		&showUnchanged, "show-unchanged", false,
		"Show resources that needn't be updated because they haven't changed, alongside those that do")
	cmd.PersistentFlags().BoolVarP(
		&summary, "summary", "s", false,
		"Only display summarization of resources and plan operations")
	cmd.PersistentFlags().StringVarP(
		&output, "output", "o", "",
		"Serialize the resulting plan to a file instead of simply printing it")

	return cmd
}