#!/bin/bash
# Backup script for archypr configuration system
# This script is versioned in the archypr-config git repo
# and should be run from ~/archypr-config/

set -euo pipefail

REPO_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
BRANCH_FILE="$REPO_DIR/.machine-branch"
MACHINE_NAME="${HOSTNAME:-$(hostname)}"

# Read branch from config, or derive from hostname
if [[ -f $BRANCH_FILE ]]; then
  BRANCH=$(cat "$BRANCH_FILE")
else
  BRANCH="$MACHINE_NAME"
fi

cd "$REPO_DIR"

# Ensure we're on the right branch
if ! git branch --list "$BRANCH" | grep -q "$BRANCH"; then
  git checkout -b "$BRANCH" main 2>/dev/null || git checkout -b "$BRANCH"
  echo "Created branch: $BRANCH"
fi
git checkout "$BRANCH" 2>/dev/null || true

# Config directories to sync
CONFIG_DIRS=(
  "hypr"
  "waybar"
  "walker"
  "mako"
  "swayosd"
  "elephant"
  "kitty"
  "ghostty"
  "alacritty"
  "btop"
  "fastfetch"
  "autostart"
)

sync_configs() {
  echo "--- Syncing configs..."
  for dir in "${CONFIG_DIRS[@]}"; do
    local src="$HOME/.config/$dir"
    local dst="$REPO_DIR/configs/$dir"
    if [[ -d $src ]]; then
      mkdir -p "$dst"
      rsync -a --delete "$src"/ "$dst"/
      echo "  Synced: $dir"
    fi
  done
}

check_and_push() {
  if ! git diff --quiet || ! git diff --cached --quiet; then
    local timestamp
    timestamp=$(date '+%Y-%m-%d %H:%M:%S')
    git add -A
    git commit -m "Auto-backup $BRANCH $timestamp"
    git push -u origin "$BRANCH" 2>&1 || echo "WARNING: Push failed — check connection"
    echo "--- Backed up at $timestamp"
  else
    echo "--- No changes to commit"
  fi
}

case "${1:-}" in
restore)
  "$REPO_DIR/restore.sh"
  ;;
check-only)
  sync_configs
  if ! git diff --quiet || ! git diff --cached --quiet; then
    echo "Changes detected"
    exit 0
  else
    echo "No changes"
    exit 1
  fi
  ;;
*)
  sync_configs
  check_and_push
  ;;
esac