Add env and restore commands (#11)

Add env and restore commands

Signed-off-by: jolheiser <john.olheiser@gmail.com>

Check for existance

Signed-off-by: jolheiser <john.olheiser@gmail.com>

Co-authored-by: jolheiser <john.olheiser@gmail.com>
Reviewed-on: https://gitea.com/jolheiser/tmpl/pulls/11
Co-Authored-By: John Olheiser <john.olheiser@gmail.com>
Co-Committed-By: John Olheiser <john.olheiser@gmail.com>

CLI.md

@@ -32,6 +32,10 @@ Download a template
 
 **--branch, -b**="": Branch to clone (default: main)
 
+## env
+
+Show tmpl environment variables
+
 ## init
 
 Initialize a template
@@ -44,6 +48,10 @@ List templates in the registry
 
 Remove a template
 
+## restore
+
+Restore missing templates
+
 ## save
 
 Save a local template

DOCS.md

@@ -108,4 +108,11 @@ I realize that many users will be using GitHub, and most will likely still be us
    1. `tmpl source add https://github.com github`
    2. Set the env variable `TMPL_SOURCE` to `github`
 2. Set the env variable `TMPL_BRANCH` to `master`
-3. Happy templating! `tmpl download user/repo repo`
+3. Happy templating! `tmpl download user/repo repo`
+
+## Backup and Restore
+
+1. The simplest solution is to make a copy of your `registry.toml` (default: `~/.tmpl/registry.toml`).
+   * Once in the new location, you will need to use `tmpl restore`.
+   
+2. Alternatively, you can copy/paste the entire registry (default: `~/.tmpl`) and skip the restore step.

cmd/app.go

@@ -51,9 +51,11 @@ func NewApp() *cli.App {
 
 	app.Commands = []*cli.Command{
 		Download,
+		Env,
 		Init,
 		List,
 		Remove,
+		Restore,
 		Save,
 		Source,
 		Test,

cmd/env.go

@@ -0,0 +1,34 @@
+package cmd
+
+import (
+	"os"
+
+	"github.com/urfave/cli/v2"
+	"go.jolheiser.com/beaver"
+	"go.jolheiser.com/beaver/color"
+)
+
+var Env = &cli.Command{
+	Name:        "env",
+	Usage:       "Show tmpl environment variables",
+	Description: "Show tmpl environment variables and their configuration",
+	Action:      runEnv,
+}
+
+func runEnv(_ *cli.Context) error {
+
+	// Source
+	beaver.Infof("TMPL_SOURCE: %s", getEnv("TMPL_SOURCE"))
+
+	// Registry Path
+	beaver.Infof("TMPL_REGISTRY: %s", getEnv("TMPL_REGISTRY"))
+
+	// Branch
+	beaver.Infof("TMPL_BRANCH: %s", getEnv("TMPL_BRANCH"))
+
+	return nil
+}
+
+func getEnv(key string) string {
+	return color.FgHiBlue.Format(os.Getenv(key))
+}

cmd/list.go

@@ -25,7 +25,7 @@ func runList(_ *cli.Context) error {
 	}
 
 	wr := tabwriter.NewWriter(os.Stdout, 0, 8, 1, '\t', 0)
-	if _, err := fmt.Fprintf(wr, "NAME\tURL\tLOCAL\tUPDATED\n"); err != nil {
+	if _, err := fmt.Fprintf(wr, "NAME\tURL\tLOCAL\tLAST UPDATED\n"); err != nil {
 		return err
 	}
 	for _, t := range reg.Templates {
@@ -35,7 +35,7 @@ func runList(_ *cli.Context) error {
 			u = t.Path
 			local = true
 		}
-		if _, err := fmt.Fprintf(wr, "%s\t%s\t%t\t%s\n", t.Name, u, local, t.Created.Format("01/02/2006")); err != nil {
+		if _, err := fmt.Fprintf(wr, "%s\t%s\t%t\t%s\n", t.Name, u, local, t.LastUpdate.Format("01/02/2006")); err != nil {
 			return err
 		}
 	}

cmd/restore.go

@@ -0,0 +1,39 @@
+package cmd
+
+import (
+	"os"
+
+	"go.jolheiser.com/tmpl/cmd/flags"
+	"go.jolheiser.com/tmpl/registry"
+
+	"github.com/urfave/cli/v2"
+	"go.jolheiser.com/beaver"
+)
+
+var Restore = &cli.Command{
+	Name:        "restore",
+	Usage:       "Restore missing templates",
+	Description: "Restore templates that are listed in the registry, but are missing archives",
+	Action:      runRestore,
+}
+
+func runRestore(_ *cli.Context) error {
+	reg, err := registry.Open(flags.Registry)
+	if err != nil {
+		return err
+	}
+
+	var num int
+	for _, tmpl := range reg.Templates {
+		if _, err := os.Lstat(tmpl.ArchivePath()); os.IsNotExist(err) {
+			beaver.Infof("Restoring %s...", tmpl.Name)
+			if err := reg.UpdateTemplate(tmpl.Name); err != nil {
+				return err
+			}
+			num++
+		}
+	}
+
+	beaver.Infof("Restored %d templates.", num)
+	return nil
+}

cmd/update.go

@@ -31,16 +31,7 @@ func runUpdate(ctx *cli.Context) error {
 		return err
 	}
 
-	if err := reg.RemoveTemplate(tmpl.Name); err != nil {
-		return err
-	}
-
-	if tmpl.Path != "" {
-		_, err = reg.SaveTemplate(tmpl.Name, tmpl.Path)
-	} else {
-		_, err = reg.DownloadTemplate(tmpl.Name, tmpl.Repository, tmpl.Branch)
-	}
-	if err != nil {
+	if err := reg.UpdateTemplate(tmpl.Name); err != nil {
 		return err
 	}
 

registry/error.go

@@ -2,6 +2,19 @@ package registry
 
 import "fmt"
 
+type ErrTemplateExists struct {
+	Name string
+}
+
+func (e ErrTemplateExists) Error() string {
+	return fmt.Sprintf("template %s already exists", e.Name)
+}
+
+func IsErrTemplateExists(err error) bool {
+	_, ok := err.(ErrTemplateExists)
+	return ok
+}
+
 type ErrTemplateNotFound struct {
 	Name string
 }

registry/registry.go

@@ -50,12 +50,16 @@ func (r *Registry) GetTemplate(name string) (*Template, error) {
 
 // DownloadTemplate downloads and adds a new Template to the Registry
 func (r *Registry) DownloadTemplate(name, repo, branch string) (*Template, error) {
+	if _, err := r.GetTemplate(name); err == nil {
+		return nil, ErrTemplateExists{Name: name}
+	}
+
 	t := &Template{
 		reg:        r,
 		Name:       name,
 		Repository: repo,
 		Branch:     branch,
-		Created:    time.Now(),
+		LastUpdate: time.Now(),
 	}
 	r.Templates = append(r.Templates, t)
 
@@ -68,11 +72,15 @@ func (r *Registry) DownloadTemplate(name, repo, branch string) (*Template, error
 
 // SaveTemplate saves a local Template to the Registry
 func (r *Registry) SaveTemplate(name, path string) (*Template, error) {
+	if _, err := r.GetTemplate(name); err == nil {
+		return nil, ErrTemplateExists{Name: name}
+	}
+
 	t := &Template{
-		reg:     r,
-		Name:    name,
-		Path:    path,
-		Created: time.Now(),
+		reg:        r,
+		Name:       name,
+		Path:       path,
+		LastUpdate: time.Now(),
 	}
 	r.Templates = append(r.Templates, t)
 
@@ -89,16 +97,48 @@ func (r *Registry) RemoveTemplate(name string) error {
 	if err != nil {
 		return err
 	}
+
 	for idx, t := range r.Templates {
 		if strings.EqualFold(name, t.Name) {
 			r.Templates = append(r.Templates[:idx], r.Templates[idx+1:]...)
 			if err := os.Remove(t.ArchivePath()); err != nil {
 				return err
 			}
+			return r.save()
 		}
 	}
 
-	return r.save()
+	return nil
+}
+
+// RemoveTemplate updates the Template on disk and in meta
+func (r *Registry) UpdateTemplate(name string) error {
+	_, err := r.GetTemplate(name)
+	if err != nil {
+		return err
+	}
+
+	for idx, t := range r.Templates {
+		if strings.EqualFold(name, t.Name) {
+			// If the path doesn't exist, we are replacing it regardless
+			if err := os.Remove(t.ArchivePath()); err != nil && !os.IsNotExist(err) {
+				return err
+			}
+
+			// Cut it out of the template list so we don't get a duplicate
+			r.Templates = append(r.Templates[:idx], r.Templates[idx+1:]...)
+
+			// If path exists, it is local
+			if t.Path != "" {
+				_, err = r.SaveTemplate(t.Name, t.Path)
+			} else {
+				_, err = r.DownloadTemplate(t.Name, t.Repository, t.Branch)
+			}
+			return err
+		}
+	}
+
+	return nil
 }
 
 // GetSource retrieves a Source from the Registry
@@ -159,7 +199,16 @@ func Open(dir string) (*Registry, error) {
 	if err != nil {
 		return nil, err
 	}
-	return &reg, tree.Unmarshal(&reg)
+
+	if err := tree.Unmarshal(&reg); err != nil {
+		return nil, err
+	}
+
+	for _, tmpl := range reg.Templates {
+		tmpl.reg = &reg
+	}
+
+	return &reg, nil
 }
 
 func create(regFile string) error {
@@ -191,7 +240,7 @@ func download(cloneURL, branch, dest string) error {
 		return err
 	}
 
-	// RemoveTemplate .git
+	// Remove .git
 	if err := os.RemoveAll(filepath.Join(tmp, ".git")); err != nil {
 		return err
 	}

registry/template.go

@@ -20,7 +20,7 @@ type Template struct {
 	Path       string    `toml:"path"`
 	Repository string    `toml:"repository"`
 	Branch     string    `toml:"branch"`
-	Created    time.Time `toml:"created"`
+	LastUpdate time.Time `toml:"last_update"`
 }
 
 // ArchiveName is the name given to the archive for this Template