#!/bin/bash
set -euxo pipefail

# Path to the variables log file
VARIABLES_LOG="/rescue/variables.log"

# Check if variables log file exists
if [ ! -f "$VARIABLES_LOG" ]; then
    echo "❌ No variables log file found. Aborting unmount."
    exit 1
fi

# Read the variables from the log file and convert them to shell format
partition=$(sed -n 's/^partition="\([^"]*\)"/\1/p' "$VARIABLES_LOG")
efi=$(sed -n 's/^efi="\([^"]*\)"/\1/p' "$VARIABLES_LOG")
home=$(sed -n 's/^home="\([^"]*\)"/\1/p' "$VARIABLES_LOG")

# Check if necessary variables are loaded
if [ -z "$partition" ] || [ -z "$efi" ] || [ -z "$home" ]; then
    echo "❌ Missing variables. Please ensure the script was run previously with valid variables."
    exit 1
fi

# Unmount the partitions and resources in reverse order of mounting

echo "Unmounting /rescue/run..."
umount /rescue/run || true
echo "Unmounting /rescue/dev/pts..."
umount /rescue/dev/pts || true
echo "Unmounting /rescue/dev..."
umount /rescue/dev || true
echo "Unmounting /rescue/sys..."
umount /rescue/sys || true
echo "Unmounting /rescue/proc..."
umount /rescue/proc || true
echo "Unmounting /rescue/home..."
umount /rescue/home || true
echo "Unmounting /rescue/boot..."
umount /rescue/boot || true
echo "Unmounting /rescue..."
umount /rescue || true

# Optional: clean up the /rescue directory after unmounting
echo "Removing /rescue directory (if needed)..."
rmdir /rescue || true

echo "✅ All partitions and resources have been unmounted and cleaned up."