From 539de59e83e2f2cfb92c5a55a3a0da55a0b4cce5 Mon Sep 17 00:00:00 2001
From: michael <m.densnow@gmail.com>
Date: Fri, 18 Aug 2023 00:23:17 +0100
Subject: [PATCH] Add uninstall.sh: Update install.sh to write vars to m269
 config file

---
 install.sh   | 35 +++++++++++++++++++++++++----------
 uninstall.sh | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 74 insertions(+), 10 deletions(-)
 create mode 100755 uninstall.sh

diff --git a/install.sh b/install.sh
index fb3a63d..2a59558 100755
--- a/install.sh
+++ b/install.sh
@@ -21,6 +21,7 @@ CHECK="allowed.py m269.json"
 FILES="$CSS $REQS $CHECK"
 COURSE=m269-23j
 VENV=~/venvs/$COURSE
+CONFIG_VARS=("VENV" "COURSE")
 
 # find out under which shell this script is running
 parent_shell=$(ps -o command $PPID)
@@ -117,6 +118,8 @@ else
     cp -a $CHECK "$FOLDER"
 fi
 
+CONFIG_VARS+=("FOLDER")
+
 echo "Creating Python environment $VENV... (this will take a bit)"
 python3.10 -m venv --prompt $COURSE $VENV
 
@@ -141,25 +144,37 @@ ALLOWED="python3.10 \"$FOLDER/allowed.py\" -c \"$FOLDER/m269.json\""
 
 if [ $shell = "fish" ]
 then
-    FILE=~/.config/fish/config.fish
+    SHELL_CONFIG_FILE=~/.config/fish/config.fish
 else
-    FILE=~/.${shell}rc
+    SHELL_CONFIG_FILE=~/.${shell}rc
 fi
 
+CONFIG_VARS+=("SHELL_CONFIG_FILE")
+
 if [ $shell = "csh" ] || [ $shell = "tcsh" ]
 then
-    echo "alias $COURSE '$M269.csh'" >> $FILE
-    echo "alias nb '$NB'" >> $FILE
-    echo "alias allowed '$ALLOWED'" >> $FILE
+    # tee writes to the file *and* std out
+    echo "alias $COURSE '$M269.csh'" >> $SHELL_CONFIG_FILE
+    echo "alias nb '$NB'" >> $SHELL_CONFIG_FILE
+    echo "alias allowed '$ALLOWED'" >> $SHELL_CONFIG_FILE
 else
     if [ $shell = "fish" ]
     then
-        echo "alias $COURSE='$M269.fish'" >> $FILE
+        echo "alias $COURSE='$M269.fish'" >> $SHELL_CONFIG_FILE
     else
-        echo "alias $COURSE='$M269'" >> $FILE
+        echo "alias $COURSE='$M269'" >> $SHELL_CONFIG_FILE
     fi
-    echo "alias nb='$NB'" >> $FILE
-    echo "alias allowed='$ALLOWED'" >> $FILE
+    echo "alias nb='$NB'" >> $SHELL_CONFIG_FILE
+    echo "alias allowed='$ALLOWED'" >> $SHELL_CONFIG_FILE
 fi
 
-echo "All done. Go to $SITE for further instructions."
\ No newline at end of file
+M269_CONFIG_FILE=$FOLDER/.m269rc
+CONFIG_VARS+=("M269_CONFIG_FILE")
+
+# Write the name=value pairs to m269 config file
+for var_name in "${CONFIG_VARS[@]}"; do
+    var_value="${!var_name}"
+    echo "$var_name=$var_value" >> "$M269_CONFIG_FILE"
+done
+
+echo "All done. Go to $SITE for further instructions."
diff --git a/uninstall.sh b/uninstall.sh
new file mode 100755
index 0000000..ee52b4b
--- /dev/null
+++ b/uninstall.sh
@@ -0,0 +1,49 @@
+#!/bin/bash
+
+# Confirm uninstallation
+echo "Warning: After uninstallation, you will need a Jupyter environment to open and run your notebooks."
+read -p "Proceed with uninstallation? [y/N] " response
+case $response in
+    [yY])
+        ;;
+    *)
+        exit 1
+        ;;
+    esac
+
+# Assume variables VENV, COURSE, FOLDER, SHELL_CONFIG_FILE,
+# will be in the m269 config file
+source .m269rc
+if [[ $? -ne 0 ]]; then
+    echo "Failed to source the configuration file "
+    exit 1
+fi
+
+# Remove the virtual environment
+echo "Removing the virtual environment..."
+rm -rf "$VENV"
+
+# Remove allowed.py and m269.json from current directory
+echo "Removing allowed.py and m269.json from $FOLDER... "
+rm -f $FOLDER/allowed.py $FOLDER/m269.json
+
+# Remove aliases from the configuration file
+echo "Removing shortcut commands from $SHELL_CONFIG_FILE..."
+
+ALIASES=("alias nb" "alias allowed" "alias $COURSE")
+
+cp "$SHELL_CONFIG_FILE" "$SHELL_CONFIG_FILE".backup
+for alias in "${ALIASES[@]}"; do
+    sed -i "/^$alias/d" "$SHELL_CONFIG_FILE"
+done
+
+# Remove lines from ~/.jupyter/custom/custom.css
+
+# Special characters need to be escaped for use in regex
+START_DELIM="\/\* Start of M269-23J notebook styling. \*\/"
+END_DELIM="\/\* End of M269-23J notebook styling. \*\/"
+CSS_FILE=~/.jupyter/custom/custom.css
+
+cp "$CSS_FILE" "$CSS_FILE".backup
+echo "Removing custom styling from $CSS_FILE ..."
+sed -i "/$START_DELIM/,/$END_DELIM/d" "$CSS_FILE"