#!/bin/bash

# Define the source and target files
SOURCE_FILE="/usr/local/share/snigdhaos/release/lsb-release-snigdhaos"
TARGET_FILE="/etc/lsb-release"

# Function to display a message with a timestamp
log_message() {
    echo "$(date '+%Y-%m-%d %H:%M:%S') - $1"
}

echo
log_message "Starting the lsb-release update process..."

# Check if the source file exists
if [[ ! -f "$SOURCE_FILE" ]]; then
    log_message "Error: Source file '$SOURCE_FILE' does not exist."
    exit 1
fi

# Check if the target file is writable (or replaceable)
if [[ -e "$TARGET_FILE" && ! -w "$TARGET_FILE" ]]; then
    log_message "Error: Target file '$TARGET_FILE' exists but is not writable. Please check permissions."
    exit 1
fi

# Attempt to copy the source file to the target location
if sudo cp "$SOURCE_FILE" "$TARGET_FILE"; then
    log_message "Successfully copied $SOURCE_FILE to $TARGET_FILE."
else
    log_message "Error: Failed to copy $SOURCE_FILE to $TARGET_FILE."
    exit 1
fi

# Verify if the file was successfully copied
if [[ -f "$TARGET_FILE" ]]; then
    log_message "Verification successful: '$TARGET_FILE' exists."
else
    log_message "Error: Verification failed. '$TARGET_FILE' does not exist after copying."
    exit 1
fi

log_message "Task Completed!"
echo