ask for confirmation on reinstall and uninstall

docker/my-dojo/dojo.sh

@@ -152,6 +152,30 @@ install() {
     launchInstall=$?
   fi
 
+  # Detection of past install
+  if [ $launchInstall -eq 0 ]; then
+    pastInstallsfound=$(docker image ls | grep samouraiwallet/dojo-db | wc -l)
+    if [ $pastInstallsfound -ne 0 ]; then
+      # Past installation found. Ask confirmation forreinstall
+      echo -e "\nWarning: Found traces of a previous installation of Dojo on this machine."
+      echo "A new installation requires to remove these elements first."
+      get_confirmation_reinstall
+      launchReinstall=$?
+
+      if [ $launchReinstall -eq 0 ]; then
+        # Uninstall
+        echo ""
+        uninstall
+        launchReinstall=$?
+      fi
+
+      if [ $launchReinstall -eq 1 ]; then
+        launchInstall=1
+        echo -e "\nInstallation was cancelled."
+      fi
+    fi
+  fi
+
   # Installation
   if [ $launchInstall -eq 0 ]; then
     # Initialize the config files
@@ -167,6 +191,12 @@ install() {
 
 # Delete everything
 uninstall() {
+  source "$DIR/install/uninstall-scripts.sh"
+
+  get_confirmation
+  launchUninstall=$?
+
+  if [ $launchUninstall -eq 0 ]; then
     docker-compose rm
 
     yamlFiles=$(select_yaml_files)
@@ -181,6 +211,10 @@ uninstall() {
     docker image rm samouraiwallet/dojo-indexer:"$DOJO_INDEXER_VERSION_TAG"
 
     docker volume prune
+    return 0
+  else
+    return 1
+  fi
 }
 
 # Clean-up (remove old docker images)

docker/my-dojo/install/install-scripts.sh

@@ -31,6 +31,18 @@ get_confirmation() {
   done
 }
 
+# Confirm reinstallation
+get_confirmation_reinstall() {
+  while true; do
+    read -p "Do you really wish to reinstall Dojo on your computer? [y/n]" yn
+    case $yn in
+      [Yy]* ) return 0;;
+      [Nn]* ) echo "Reinstallation was cancelled."; return 1;;
+      * ) echo "Please answer yes or no.";;
+    esac
+  done
+}
+
 # Initialize configuration files from templates
 init_config_files() {
   # Initialize db scripts

docker/my-dojo/install/uninstall-scripts.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# Confirm uninstallation
+get_confirmation() {
+  while true; do
+    echo "This operation is going to uninstall Dojo from your computer."
+    echo "Warning: This will delete from disk all the data stored by your Dojo (blockchain data, Dojo db, etc)."
+    read -p "Do you wish to continue? [y/n]" yn
+    case $yn in
+      [Yy]* ) return 0;;
+      [Nn]* ) echo "Uninstallation was cancelled."; return 1;;
+      * ) echo "Please answer yes or no.";;
+    esac
+  done
+}