From 14a35cdd9e401824d4e16c3e6b8b6deec6c81ebb Mon Sep 17 00:00:00 2001
From: Justin Hawkins <justin@hawkins.id.au>
Date: Sun, 21 Nov 2021 16:30:57 +1030
Subject: [PATCH] Check the chosen command for existence

---
 CHANGELOG.md     | 2 ++
 config/config.go | 7 +++++++
 2 files changed, 9 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc294e5..94141ee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+- Check the chosen command exists when configuring a profile
+
 ## [v0.5.3] - 2021-11-21
 
 - Add config option to limit number of simultaneous downloads
diff --git a/config/config.go b/config/config.go
index 199cdf0..8d3e1d0 100644
--- a/config/config.go
+++ b/config/config.go
@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"log"
 	"os"
+	"os/exec"
 	"strings"
 
 	"gopkg.in/yaml.v2"
@@ -147,6 +148,12 @@ func (c *Config) UpdateFromJSON(j []byte) error {
 			}
 		}
 
+		// check the command exists
+		_, err := exec.LookPath(newConfig.DownloadProfiles[i].Command)
+		if err != nil {
+			return fmt.Errorf("Could not find %s on the path", newConfig.DownloadProfiles[i].Command)
+		}
+
 	}
 
 	*c = newConfig