fix zsh/bash embedded plugin

pkg/cmd/cli/profile/scripts/plugin.sh

@@ -1,68 +1,106 @@
 #!/bin/bash
-
 # Force encoding
 export LANG=C.UTF-8
 export LC_ALL=C.UTF-8
 
-C8Y_SHELL=bash
-if [ -n "$BASH_VERSION" ]; then
-    C8Y_SHELL=bash
-elif [ -n "$ZSH_VERSION" ]; then
-    C8Y_SHELL=zsh
-fi
-
-install_bash_dependencies() {
+__setup_bash() {
+    #
+    # Install bash dependencies
+    #
     if [ ! -d "$HOME/.bash_completion.d" ]; then
         mkdir -p "$HOME/.bash_completion.d"
     fi
 
     if [ ! -f "$HOME/.bash_completion.d/complete_alias" ]; then
-        echo "Installing bash completion for aliases"
-        curl -sfL https://raw.githubusercontent.com/cykerway/complete-alias/master/complete_alias \
-                > "$HOME/.bash_completion.d/complete_alias"
+        if command -V curl >/dev/null 2>&1; then
+            echo "Installing bash completion for aliases"
+            curl -sfL https://raw.githubusercontent.com/cykerway/complete-alias/master/complete_alias > "$HOME/.bash_completion.d/complete_alias"
+        elif command -V curl >/dev/null 2>&1; then
+            echo "Installing bash completion for aliases"
+            wget -O - https://raw.githubusercontent.com/cykerway/complete-alias/master/complete_alias > "$HOME/.bash_completion.d/complete_alias"
+        fi
     fi
 
     # Enable completion for aliases
+    # shellcheck disable=SC1091
     [ -f /usr/share/bash-completion/bash_completion ] && source /usr/share/bash-completion/bash_completion
+    # shellcheck disable=SC1091
     [ -f "$HOME/.bash_completion.d/complete_alias" ] && source "$HOME/.bash_completion.d/complete_alias"
 
-    if [ -f "$(brew --prefix)/etc/bash_completion" ]; then
-        . "$(brew --prefix)/etc/bash_completion"
+    if [ -f /etc/bash_completion ]; then
+        # shellcheck disable=SC1091
+        . "/etc/bash_completion"
+    elif command -v brew >/dev/null 2>&1; then
+        if [ -f "$(brew --prefix)/etc/bash_completion" ]; then
+            # shellcheck disable=SC1091
+            . "$(brew --prefix)/etc/bash_completion"
+        fi
     fi
-}
 
-init-c8y() {
-    if command -v c8y >/dev/null 2>&1; then
-        if [ "$C8Y_SHELL" = "zsh" ]; then
+    # shellcheck disable=SC1090
+    source <(c8y completion bash)
+}
 
-            # homebrew only: Add completions folder to the fpath so zsh can find it
-            if command -v brew >/dev/null 2>&1; then
-                FPATH="$(brew --prefix)/share/zsh/site-functions:$FPATH"
-                chmod -R go-w "$(brew --prefix)/share"
-            fi
+__setup_zsh() {
+    # homebrew only: Add completions folder to the fpath so zsh can find it
+    if command -v brew >/dev/null 2>&1; then
+        FPATH="$(brew --prefix)/share/zsh/site-functions:$FPATH"
+        # TODO: Check if this line is really required
+        # chmod -R go-w "$(brew --prefix)/share"
+    fi
 
-            # init completions
-            autoload -U compinit; compinit
+    # init completions
+    autoload -U compinit; compinit
 
-            if [ -n "$ZSH_CUSTOM" ]; then
-                mkdir -p "$ZSH_CUSTOM/plugins/c8y"
+    IMPORT_LOCAL=1
 
-                if [ ! -f "$ZSH_CUSTOM/plugins/c8y/_c8y" ]; then
-                    c8y completion zsh > "$ZSH_CUSTOM/plugins/c8y/_c8y"
-                    echo "Updated c8y completions"
-                    source "$HOME/.zshrc"
+    if [ -n "$ZSH_CUSTOM" ]; then
+        # oh-my-zsh
+        mkdir -p "$ZSH_CUSTOM/plugins/c8y"
+        if [ ! -f "$ZSH_CUSTOM/plugins/c8y/_c8y" ]; then
+            echo "Updating c8y completions: $ZSH_CUSTOM/plugins/c8y/_c8y"
+            c8y completion zsh > "$ZSH_CUSTOM/plugins/c8y/_c8y"
+            IMPORT_LOCAL=0
+        fi
+    else
+        # zsh (vanilla)
+        if [ ! -f "/usr/share/zsh/site-functions/_c8y" ]; then
+            if [ "$EUID" = "0" ]; then
+                if [ -d /usr/share/zsh/site-functions ]; then
+                    echo "Updating c8y completions: /usr/share/zsh/site-functions/_c8y"
+                    c8y completion zsh > "/usr/share/zsh/site-functions/_c8y"
+                    IMPORT_LOCAL=0
                 fi
             fi
         fi
+    fi
 
-        if [ "$C8Y_SHELL" = "bash" ]; then
-            install_bash_dependencies
-            source <(c8y completion bash)
-        fi
+    if [ "$IMPORT_LOCAL" = 1 ]; then
+        # shellcheck disable=SC1090
+        source <(c8y completion zsh)
     fi
 }
 
-init-c8y
+
+#
+# init
+#
+C8Y_SHELL=bash
+if [ -n "$BASH_VERSION" ]; then
+    C8Y_SHELL=bash
+elif [ -n "$ZSH_VERSION" ]; then
+    C8Y_SHELL=zsh
+fi
+if command -v c8y >/dev/null 2>&1; then
+    case "$C8Y_SHELL" in
+        bash)
+            __setup_bash
+            ;;
+        zsh)
+            __setup_zsh
+            ;;
+    esac
+fi
 
 ########################################################################
 # c8y helpers