From 49ea48934fb33b03ee5c4d7ccf326192c44d295e Mon Sep 17 00:00:00 2001
From: Jan De Dobbeleer <jan.de.dobbeleer@gmail.com>
Date: Sun, 13 Oct 2024 12:48:11 +0200
Subject: [PATCH] feat(init): clean cache files > 1 week automatically

---
 src/cache/clear.go         | 57 ++++++++++++++++++++++++++++++++++++++
 src/cli/cache.go           | 34 ++++++-----------------
 src/cli/init.go            |  1 +
 src/runtime/environment.go |  1 +
 src/runtime/terminal.go    | 17 ++++++++++++
 5 files changed, 85 insertions(+), 25 deletions(-)
 create mode 100644 src/cache/clear.go

diff --git a/src/cache/clear.go b/src/cache/clear.go
new file mode 100644
index 00000000..16b06d35
--- /dev/null
+++ b/src/cache/clear.go
@@ -0,0 +1,57 @@
+package cache
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+func Clear(cachePath string, force bool) ([]string, error) {
+	// get all files in the cache directory that start with omp.cache and delete them
+	files, err := os.ReadDir(cachePath)
+	if err != nil {
+		return []string{}, err
+	}
+
+	var removed []string
+
+	deleteFile := func(file string) {
+		path := filepath.Join(cachePath, file)
+		if err := os.Remove(path); err == nil {
+			removed = append(removed, path)
+		}
+	}
+
+	for _, file := range files {
+		if file.IsDir() {
+			continue
+		}
+
+		if !strings.HasPrefix(file.Name(), FileName) {
+			continue
+		}
+
+		if force {
+			deleteFile(file.Name())
+			continue
+		}
+
+		// don't delete the system cache file unless forced
+		if file.Name() == FileName {
+			continue
+		}
+
+		info, err := file.Info()
+		if err != nil {
+			continue
+		}
+
+		if info.ModTime().AddDate(0, 0, 7).After(info.ModTime()) {
+			continue
+		}
+
+		deleteFile(file.Name())
+	}
+
+	return removed, nil
+}
diff --git a/src/cli/cache.go b/src/cli/cache.go
index 1ea50543..91bc206c 100644
--- a/src/cli/cache.go
+++ b/src/cli/cache.go
@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
-	"strings"
 
 	"github.com/jandedobbeleer/oh-my-posh/src/cache"
 	"github.com/jandedobbeleer/oh-my-posh/src/runtime"
@@ -46,7 +45,15 @@ You can do the following:
 		case "path":
 			fmt.Println(env.CachePath())
 		case "clear":
-			clear(env.CachePath())
+			deletedFiles, err := cache.Clear(env.CachePath(), true)
+			if err != nil {
+				fmt.Println(err)
+				return
+			}
+
+			for _, file := range deletedFiles {
+				fmt.Println("removed cache file:", file)
+			}
 		case "edit":
 			cacheFilePath := filepath.Join(env.CachePath(), cache.FileName)
 			os.Exit(editFileWithEditor(cacheFilePath))
@@ -57,26 +64,3 @@ You can do the following:
 func init() {
 	RootCmd.AddCommand(getCache)
 }
-
-func clear(cachePath string) {
-	// get all files in the cache directory that start with omp.cache and delete them
-	files, err := os.ReadDir(cachePath)
-	if err != nil {
-		return
-	}
-
-	for _, file := range files {
-		if file.IsDir() {
-			continue
-		}
-
-		if !strings.HasPrefix(file.Name(), cache.FileName) {
-			continue
-		}
-
-		path := filepath.Join(cachePath, file.Name())
-		if err := os.Remove(path); err == nil {
-			fmt.Println("removed cache file:", path)
-		}
-	}
-}
diff --git a/src/cli/init.go b/src/cli/init.go
index e8754ea8..1f4cf395 100644
--- a/src/cli/init.go
+++ b/src/cli/init.go
@@ -82,6 +82,7 @@ func runInit(shellName string) {
 			Config: configFlag,
 			Strict: strict,
 			Debug:  debug,
+			Init:   true,
 		},
 	}
 
diff --git a/src/runtime/environment.go b/src/runtime/environment.go
index d1e6e79c..98b79fda 100644
--- a/src/runtime/environment.go
+++ b/src/runtime/environment.go
@@ -100,6 +100,7 @@ type Flags struct {
 	Column        int
 	JobCount      int
 	SaveCache     bool
+	Init          bool
 }
 
 type CommandError struct {
diff --git a/src/runtime/terminal.go b/src/runtime/terminal.go
index c9bf444f..7eee0b5c 100644
--- a/src/runtime/terminal.go
+++ b/src/runtime/terminal.go
@@ -596,10 +596,27 @@ func (term *Terminal) saveTemplateCache() {
 func (term *Terminal) Close() {
 	defer term.Trace(time.Now())
 	term.saveTemplateCache()
+	term.clearCacheFiles()
 	term.deviceCache.Close()
 	term.sessionCache.Close()
 }
 
+func (term *Terminal) clearCacheFiles() {
+	if !term.CmdFlags.Init {
+		return
+	}
+
+	deletedFiles, err := cache.Clear(term.CachePath(), false)
+	if err != nil {
+		term.Error(err)
+		return
+	}
+
+	for _, file := range deletedFiles {
+		term.DebugF("removed cache file: %s", file)
+	}
+}
+
 func (term *Terminal) LoadTemplateCache() {
 	defer term.Trace(time.Now())