configure: Better detection and choice between predefined configs

system_setup/configure.sh

@@ -5,15 +5,9 @@
 # SPDX-License-Identifier: AGPL-3.0-or-later
 
 SCRIPTDIR="$(cd "$(dirname "$0")" && pwd)"
-CONF_FILE="${SCRIPTDIR}/../config.d/configure.conf"
-
-CONF_EXISTING="${SCRIPTDIR}/../config/setup_system.conf"
-if [[ -f "$CONF_EXISTING" ]]; then
-    echo "Found existing config in $CONF_EXISTING . Will try to use it."
-    CONF_DIST="$CONF_EXISTING"
-else
-    CONF_DIST="${SCRIPTDIR}/config.dist/setup_system.conf.dist"
-fi
+CONF_DIST="${SCRIPTDIR}/config.dist/setup_system.conf.dist"
+CONF_FILE="${SCRIPTDIR}/../config/setup_system.conf"
+CONF_PRE="${SCRIPTDIR}/../config.d/configure.conf"
 
 # Prompt for a single value; returns the old value unchanged if the user presses Enter.
 prompt_value() {
@@ -26,38 +20,66 @@ prompt_value() {
 # Replace the first matching simple export line in configure.conf.
 set_conf_var() {
     local varname="$1" value="$2"
-    sed -i "s|^[[:space:]]*export ${varname}=.*|export ${varname}=\"${value}\"|" "$CONF_FILE"
+    sed -i "s|^[[:space:]]*export ${varname}=.*|export ${varname}=\"${value}\"|" "$CONF_PRE"
 }
 
 # Update an existing bare "export VAR=…" line at the top level, or append one.
 override_conf_var() {
     local varname="$1" value="$2"
-    if grep -q "^export ${varname}=" "$CONF_FILE"; then
-        sed -i "s|^export ${varname}=.*|export ${varname}=\"${value}\"|" "$CONF_FILE"
+    if grep -q "^export ${varname}=" "$CONF_PRE"; then
+        sed -i "s|^export ${varname}=.*|export ${varname}=\"${value}\"|" "$CONF_PRE"
     else
-        printf 'export %s="%s"\n' "$varname" "$value" >> "$CONF_FILE"
+        printf 'export %s="%s"\n' "$varname" "$value" >> "$CONF_PRE"
     fi
 }
 
 do_configure() {
-    if [[ -f "$CONF_FILE" ]]; then
-        echo "Existing preconfig found: $CONF_FILE"
+    # Possibilities:
+    # 1 Found CONF_FILE="${SCRIPTDIR}/../config/setup_system.conf": This is a preinstalled company-value filled complete conf file
+    # 2 Found CONF_PRE="${SCRIPTDIR}/../config.d/configure.conf": This a a configure file from a previous configure run
+    # 3 Found none of these: use CONF_DIST="${SCRIPTDIR}/config.dist/setup_system.conf.dist"
+    # -> if 1 or 2 found, ask the user if to use one of them
+    # -> either choice, the CONF_PRE="${SCRIPTDIR}/../config.d/configure.conf" is written from it and used for further setup
+
+    if [ -f "$CONF_FILE" ] || [ -f "$CONF_PRE" ]; then
+        echo "Some alternatives found for configure source:"
+        if [[ -f "$CONF_PRE" ]]; then
+            echo "  Choice (p): Another config run result was found in $CONF_PRE ."
+            echo "    Hint: May contain Values that already were setup different for your details"
+        else
+            unset CONF_PRE
+        fi
+        if [[ -f "$CONF_FILE" ]]; then
+            echo "  Choice (c): Found companys full config in $CONF_FILE ."
+            echo "    This may be a full config, that is valid for your company."
+        else
+            unset CONF_FILE
+        fi
+        # Always possible: Use new dist
+        echo "  Choice (d): You may discard all, and use distributed defaults from the maintainers."
+        echo "    Hint: Will always start from scratch which guaranties to have a valid config for your current version"
+
         while true; do
-            read -r -p "  Do you want to use it (1) or start with a new config (2): " CHOICE
+            read -r -p "  Please make a coice: " CHOICE
             case "${CHOICE}" in
-                1)
-                    echo "Using the existing File"
-                    break
+                "p")
+                    if [[ -f "$CONF_PRE" ]]; then
+                        echo "Using the existing config run file."
+                        break
+                    fi
                     ;;
-                2)
-                    rm "$CONF_FILE"
-                    cp "${CONF_DIST}" "$CONF_FILE"
-                    break
+                "c")
+                    if [[ -f "$CONF_FILE" ]]; then
+                        rm "$CONF_PRE" >/dev/null 2>&1
+                        cp "$CONF_FILE" "$CONF_PRE" && break
+                    fi
                     ;;
-                *)
-                    echo "  Please enter 1 or 2."
+                "d")
+                    rm "$CONF_PRE" >/dev/null 2>&1
+                    cp "$CONF_DIST" "$CONF_PRE" && break
                     ;;
             esac
+            echo "Invalid choice or error in selection made."
         done
     else
         cp "${CONF_DIST}" "$CONF_FILE"
@@ -79,7 +101,7 @@ do_configure() {
         set_conf_var "REPO_BRANCH" "$REPO_BRANCH"
     fi
 
-    source "$CONF_FILE"
+    source "$CONF_PRE"
     VARS=("TLDOMAIN" "SERVERFQDN_IPA" "DOMAIN" "SERVERFQDN_NC" "IPAVAULTUSE" "IPAVAULTNAME" "DISTCONFIGPATH_SRC" "CLIENTADMINGROUP" )
     for ELE in "${VARS[@]}"
     do
@@ -87,7 +109,7 @@ do_configure() {
             echo ""
             new_ELE=$(prompt_value "${ELE}" "${!ELE}")
             set_conf_var "${ELE}" "${new_ELE}"
-            source "$CONF_FILE"
+            source "$CONF_PRE"
             REPEAT_TEST=1
             case ${ELE} in
                 "SERVERFQDN_NC") echo "=== Testing: Nextcloud server ==="
@@ -159,7 +181,7 @@ do_configure() {
     done
 
     echo ""
-    echo "Configuration written to: ${CONF_FILE}"
+    echo "Configuration written to: ${CONF_PRE}"
 }
 
 while true; do