From 7d00c7b5fb340d0720ef163dffa5b1b837ca5a37 Mon Sep 17 00:00:00 2001
From: Arsen Musayelyan <moussaelianarsen@gmail.com>
Date: Wed, 30 Nov 2022 21:42:04 -0800
Subject: [PATCH] Add --installed/-I flag to ls command

---
 list.go | 20 ++++++++++++++++++++
 main.go |  6 ++++++
 2 files changed, 26 insertions(+)

diff --git a/list.go b/list.go
index cedfd7e..a86e79e 100644
--- a/list.go
+++ b/list.go
@@ -26,6 +26,7 @@ import (
 	"github.com/urfave/cli/v2"
 	"go.arsenm.dev/logger/log"
 	"go.arsenm.dev/lure/internal/db"
+	"go.arsenm.dev/lure/manager"
 )
 
 func listCmd(c *cli.Context) error {
@@ -35,6 +36,19 @@ func listCmd(c *cli.Context) error {
 	}
 	defer result.Close()
 
+	var installed map[string]string
+	if c.Bool("installed") {
+		mgr := manager.Detect()
+		if mgr == nil {
+			log.Fatal("Unable to detect supported package manager on system").Send()
+		}
+
+		installed, err = mgr.ListInstalled(nil)
+		if err != nil {
+			log.Fatal("Error listing installed packages").Err(err).Send()
+		}
+	}
+
 	err = result.Iterate(func(d types.Document) error {
 		var pkg db.Package
 		err := document.StructScan(d, &pkg)
@@ -42,6 +56,12 @@ func listCmd(c *cli.Context) error {
 			return err
 		}
 
+		if c.Bool("installed") {
+			if _, ok := installed[pkg.Name]; !ok {
+				return nil
+			}
+		}
+
 		fmt.Printf("%s/%s %s\n", pkg.Repository, pkg.Name, pkg.Version)
 		return nil
 	})
diff --git a/main.go b/main.go
index 08e273a..f59932c 100644
--- a/main.go
+++ b/main.go
@@ -77,6 +77,12 @@ func main() {
 				Action: infoCmd,
 			},
 			{
+				Flags: []cli.Flag{
+					&cli.BoolFlag{
+						Name:    "installed",
+						Aliases: []string{"I"},
+					},
+				},
 				Name:    "list",
 				Usage:   "List LURE repo packages",
 				Aliases: []string{"ls"},