From b1601208936d1e6bb915f9fba09f519b8904ba37 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stig-=C3=98rjan=20Smelror?= <smelror@gmail.com>
Date: Fri, 15 Mar 2024 22:55:52 +0100
Subject: [PATCH] Update zrep script to handle cases where installed.json is
 empty or contains no packages. Add checks to handle empty JSON objects or
 arrays.

---
 zrep | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/zrep b/zrep
index a582388..da9fe70 100755
--- a/zrep
+++ b/zrep
@@ -299,9 +299,21 @@ end' "$installed_json" > "$installed_json.tmp" && mv "$installed_json.tmp" "$ins
 function zrep_list_installed_packages() {
     zrep_installed_json
 
+    # Check if installed.json exists and is not empty
+    if [[ ! -s "${installed_json}" ]]; then
+        zrep_msg info "No packages installed."
+        return
+    fi
+
     # Parse installed.json and list packages
     zrep_msg sub "\nInstalled packages:"
 
+    # Check if the JSON file is effectively empty ({} or [])
+    if jq -e 'if type == "object" then . == {} elif type == "array" then . == [] else false end' "${installed_json}" >/dev/null; then
+        zrep_msg info "No packages installed."
+        return
+    fi
+
     # Iterate through each author and their packages
     jq -r 'to_entries | .[] | .key as $author | .value[] | "\($author)/\(.script) (\(.version))"' "${installed_json}" | while IFS= read -r package_info; do
         local package_name=$(echo "${package_info}" | cut -d ' ' -f1)  # Extract package name before the version