add plugin functionality

functions/plugin

@@ -4,20 +4,50 @@ function plugin_help() {
   usage_general
   cat<<EOF
 commands:
-    fetch     [download-url]  [servername]
-    delete    [plugin-name]   [servername]
+    fetch     [servername]  [download-url]
+    delete    [servername]  [plugin-name]
     list      [servername]
 EOF
 }
 
 function plugin_fetch() {
+  checkPluginDir "${1}"
 
+  local plugin_dir="$(getValueByKey 'PODMAN_DIRECTORY')/${1}/data/plugins"
+  local plugin_name="$(echo ${2} | awk -F/ '{print $NF}')"
+
+  if [[ -f "${plugin_dir}/${plugin_name}" ]]; then
+    log e "Plugin '${plugin_name}' does already exist!"
+    exit 1
+  fi
+
+  curl -L "${2}" -o "${plugin_dir}/${plugin_name}"
 }
 
 function plugin_delete() {
+  checkPluginDir "${1}"
 
+  local plugin_dir="$(getValueByKey 'PODMAN_DIRECTORY')/${1}/data/plugins"
+  if [[ ! -f "${plugin_dir}/${2}" ]]; then
+    log e "Plugin '${2}' does not exist! Check again using '$(basename 0) plugin list'"
+    exit 1
+  fi
+  rm "${plugin_dir}/${2}"
 }
 
 function plugin_list {
+  checkPluginDir "${1}"
 
+  local plugin_dir="$(getValueByKey 'PODMAN_DIRECTORY')/${1}/data/plugins"
+  local found_plugins=($(find "$plugin_dir" -iname "*.jar" -maxdepth 1 -type f -print))
+
+  if [[ "${#found_plugins[@]}" -eq 0 ]]; then
+    log i "No plugins found for '$1'"
+    exit 0
+  fi
+
+  log i "Found ${#found_plugins[@]} plugins:"
+  for plugin in "${found_plugins[@]}"; do
+    echo "- $(basename ${plugin})"
+  done
 }

utils/helpers

@@ -129,3 +129,13 @@ function checkDatapackDir() {
     mkdir -p "$(getValueByKey 'PODMAN_DIRECTORY')/${1}/data/world/datapacks"
   fi
 }
+
+function checkPluginDir() {
+  if [[ -z "$1" ]]; then
+    log e "Parameters can't be empty!"
+    exit 1
+  fi
+  if [[ ! -d "$(getValueByKey 'PODMAN_DIRECTORY')/${1}/data/plugins" ]]; then
+    mkdir -p "$(getValueByKey 'PODMAN_DIRECTORY')/${1}/data/plugins"
+  fi
+}