#!/bin/bash

# Backup script for pulse-monitor project
# Creates a backup directory with today's date and copies all relevant files

DATE=$(date +%Y%m%d)
BACKUP_DIR="backup_${DATE}"

# Check if backup already exists
if [ -d "$BACKUP_DIR" ]; then
    echo "Backup directory $BACKUP_DIR already exists."
    read -p "Overwrite? (y/n) " -n 1 -r
    echo
    if [[ ! $REPLY =~ ^[Yy]$ ]]; then
        echo "Backup cancelled."
        exit 1
    fi
    rm -rf "$BACKUP_DIR"
fi

# Create backup directory
mkdir -p "$BACKUP_DIR"

# Copy relevant files
echo "Creating backup in $BACKUP_DIR..."

# Go source files
cp -v *.go "$BACKUP_DIR/" 2>/dev/null

# Markdown documentation
cp -v *.md "$BACKUP_DIR/" 2>/dev/null

# Configuration files
cp -v *.yaml "$BACKUP_DIR/" 2>/dev/null
cp -v *.yml "$BACKUP_DIR/" 2>/dev/null

# Shell scripts (except this one to avoid recursion issues)
for f in *.sh; do
    if [ "$f" != "backup.sh" ]; then
        cp -v "$f" "$BACKUP_DIR/" 2>/dev/null
    fi
done

# Build script
cp -v build.sh "$BACKUP_DIR/" 2>/dev/null

# Makefile if exists
cp -v Makefile "$BACKUP_DIR/" 2>/dev/null

# Go module files
cp -v go.mod "$BACKUP_DIR/" 2>/dev/null
cp -v go.sum "$BACKUP_DIR/" 2>/dev/null

# Training digits directory
if [ -d "training_digits" ]; then
    cp -rv training_digits "$BACKUP_DIR/" 2>/dev/null
fi

echo ""
echo "✓ Backup complete: $BACKUP_DIR"
echo "Files backed up:"
ls -la "$BACKUP_DIR/"