#!/bin/bash
# ----------------------------------------------------------------------------------------------
# --------------------------------- Rsync Core Script ------------------------------------------
# ----------------------------------------------------------------------------------------------
# ---------------- User Variables, Please adjust in Master.conf as needed ----------------------
# ----------------------------------------------------------------------------------------------
 
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
source "$SCRIPT_DIR/../Master.conf"
source "$SCRIPT_DIR/../common.sh"
 
# -----------------------------------------------------------------------------------------------
# Separate the positional directory argument from flag/key=value args
# -----------------------------------------------------------------------------------------------
DIRECTORY=""
RAW_ARGS=()
 
for ARG in "$@"; do
    case "$ARG" in
        --*|*=*) RAW_ARGS+=("$ARG") ;;
        *) [[ -z "$DIRECTORY" ]] && DIRECTORY="$ARG" || RAW_ARGS+=("$ARG") ;;
    esac
done
 
parse_args "${RAW_ARGS[@]}"
 
[[ -z "$DIRECTORY" ]] && error "No directory specified. Usage: rsync.sh <dir> [--dry-run] [--log]" && exit 1
 
detect_hosts
resolve_remote_ip
check_connectivity
 
# -----------------------------------------------------------------------------------------------
# Profile resolution — inferred from the directory basename
# -----------------------------------------------------------------------------------------------
PROFILE_NAME=$(basename "$DIRECTORY" | tr '[:upper:]' '[:lower:]')
info "Profile: $PROFILE_NAME"
 
# Scalar overrides from profile
BW_LIMIT=${PROFILE_BW_LIMIT[$PROFILE_NAME]:-$BW_LIMIT}
RETRY_COUNT=${PROFILE_RETRY_COUNT[$PROFILE_NAME]:-$RETRY_COUNT}
SLEEP=${PROFILE_SLEEP[$PROFILE_NAME]:-$SLEEP}
CONTAINER_DELAY=${PROFILE_CONTAINER_DELAY[$PROFILE_NAME]:-$CONTAINER_DELAY}
 
# Array overrides from profile — convert space-separated strings to proper bash arrays
read -r -a CRITICAL_CONTAINER_NAMES <<< "${PROFILE_CRITICAL_CONTAINER_NAMES[$PROFILE_NAME]:-}"
read -r -a DELAYED_CONTAINERS       <<< "${PROFILE_DELAYED_CONTAINERS[$PROFILE_NAME]:-}"
read -r -a EXCLUDE_DIRS             <<< "${PROFILE_EXCLUDE_DIRS[$PROFILE_NAME]:-}"
 
[[ "$SHOW_STATUS" == true ]] && show_status && exit 0
 
# -----------------------------------------------------------------------------------------------
# Run
# -----------------------------------------------------------------------------------------------
echo ""
echo "$ICON_RUN Sync Starting"
echo "Source:  $DIRECTORY"
echo "Remote:  $REMOTE_SERVER:$DIRECTORY"
echo "Profile: $PROFILE_NAME"
echo ""
 
stop_containers
 
get_rsync_opts
 
# Append excludes
for ex in "${EXCLUDE_DIRS[@]}"; do
    [[ -n "$ex" ]] && RSYNC_OPTS+=(--exclude="$ex")
done
 
[[ "$DRY_RUN" == true ]] && RSYNC_OPTS+=("--dry-run") && warn "DRY RUN — no changes will be made"
 
START=$(date +%s)
RSYNC_SUCCESS=false
 
for i in $(seq 1 "$RETRY_COUNT"); do
    # dirname "$DIRECTORY" is intentional — rsync recreates the final directory on the remote
    # e.g. source /mnt/user/Movies → remote receives /mnt/user/Movies (not /mnt/user/Movies/Movies)
    if rsync "${RSYNC_OPTS[@]}" \
        -e "ssh -i $SSH_KEY -T -o Compression=no -o IPQoS=throughput" \
        "$DIRECTORY" "root@${REMOTE_SERVER}:$(dirname "$DIRECTORY")/"; then
        success "Rsync complete"
        RSYNC_SUCCESS=true
        break
    else
        warn "$ICON_RETRY Rsync failed (attempt $i/$RETRY_COUNT)"
        [[ "$i" -lt "$RETRY_COUNT" ]] && info "Retrying in ${SLEEP}s..." && sleep "$SLEEP"
    fi
done
 
start_containers
 
END=$(date +%s)
 
echo ""
echo "===== SUMMARY ====="
echo "Directory: $DIRECTORY"
echo "Profile:   $PROFILE_NAME"
echo "Duration:  $(format_duration $((END - START)))"
if [[ "$RSYNC_SUCCESS" == true ]]; then
    echo "Status:    $ICON_SUCCESS DONE"
else
    echo "Status:    $ICON_ERROR FAILED after $RETRY_COUNT attempts"
fi
echo "==================="
 
[[ "$RSYNC_SUCCESS" == false ]] && exit 1
exit 0