#!/usr/bin/env bash
# Evomedia.net Token Savers — https://github.com/kellymichels/zscripts-token-savers
# Created by Kelly Michels · dev@evomedia.net
# Licensed under the MIT License. See LICENSE.
#
# zsync — copy new backup files offsite; or build + mirror a vite project's dist.
#
# Usage:
#   zsync                                # new files: backups folder -> paths.oneDriveBackups
#   zsync <viteproject> --dest /mnt/mirror/dist
#
# The no-args mode copies only files that don't exist at the destination yet
# (never overwrites, never deletes). The project mode runs npm run build, then
# mirrors dist/ to --dest (or $ZSYNC_DEST) with rsync --delete.

set -uo pipefail
source "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/zhelpers.sh"
z_track_start "$@"
z_need_config

projects=(); dest="${ZSYNC_DEST:-}"
while [ $# -gt 0 ]; do
  case "$1" in
    --dest) dest="${2:-}"; shift 2 ;;
    -*)     err "Unknown option: $1"; exit 1 ;;
    *)      projects+=("$1"); shift ;;
  esac
done

# ---- no-args mode: backups -> offsite, new files only ------------------------
if [ "${#projects[@]}" -eq 0 ]; then
  BACKUPS_ROOT="$(dirname "$(z_path "$(zq '.paths.backupsLocal')")")"
  OFFSITE_ROOT="$(z_path "$(zq '.paths.oneDriveBackups')")"

  printf '\n'; info "=== zsync (backups -> offsite) ==="
  dim "  Source:      $BACKUPS_ROOT"
  dim "  Destination: $OFFSITE_ROOT"
  dim "  Mode:        new files and folders only"
  printf '\n'

  if [ -z "$OFFSITE_ROOT" ]; then
    warn "  paths.oneDriveBackups is not set in zconfig.json - nothing to do."
    exit 0
  fi
  if [ ! -d "$BACKUPS_ROOT" ]; then
    warn "  Source not found (skipped): $BACKUPS_ROOT"
    exit 0
  fi
  mkdir -p "$OFFSITE_ROOT"

  copied=0; skipped=0
  while IFS= read -r -d '' f; do
    rel="${f#"$BACKUPS_ROOT"/}"
    target="$OFFSITE_ROOT/$rel"
    if [ -e "$target" ]; then skipped=$((skipped + 1)); continue; fi
    mkdir -p "$(dirname "$target")"
    cp -p "$f" "$target"
    ok "    Copied: $rel ($(z_size_mb "$f") MB)"
    copied=$((copied + 1))
  done < <(find "$BACKUPS_ROOT" -type f -print0 2>/dev/null)

  printf '\n'; info "  Done: $copied copied, $skipped already present"
  printf '\n'
  exit 0
fi

# ---- project mode: build + mirror a vite project's dist ----------------------
z_require rsync
for key in "${projects[@]}"; do
  zproj_require "$key"
  kind="$(zproj "$key" .kind)"
  if [ "$kind" != "vite" ]; then
    printf '\n'; warn "zsync project mode only supports vite kind (builds and mirrors dist/). '$key' is kind '$kind'."
    exit 1
  fi
  root="$(zproj_root "$key")"

  if [ -z "$dest" ]; then
    printf '\n'; info "=== zsync ($(zproj "$key" .label)) ==="
    warn "No destination set."
    dim "Set ZSYNC_DEST or run: zsync $key --dest /path/to/folder"
    dim "This runs npm run build, then mirrors dist -> destination (rsync --delete)."
    exit 1
  fi

  printf '\n'; info "=== zsync ($(zproj "$key" .label)) ==="
  info "Build + mirror dist -> $dest"
  printf '\n'

  (cd "$root" && npm run build) || { err "npm run build failed"; exit 1; }
  [ -d "$root/dist" ] || { err "dist/ missing after build."; exit 1; }

  mkdir -p "$dest"
  rsync -a --delete "$root/dist/" "$dest/" || { err "rsync failed"; exit 1; }

  printf '\n'; ok "Sync complete."
done