#!/bin/bash
set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

# Load config & helpers
source "$SCRIPT_DIR/../Master.conf"
source "$SCRIPT_DIR/../common.sh"

# Input directory
DIRECTORY="$1"
if [[ -z "$DIRECTORY" ]]; then
    echo "Usage: $0 <directory-to-sync> [--dry-run] [VAR=value ...]"
    exit 1
fi

shift 1
parse_args "$@"

# Profile detection
PROFILE_NAME=$(basename "$DIRECTORY" | tr '[:upper:]' '[:lower:]')
echo "Detected profile: $PROFILE_NAME"

MAX_RSYNC_PROCS=${PROFILE_MAX_PROCS[$PROFILE_NAME]:-$MAX_RSYNC_PROCS}
BW_LIMIT=${PROFILE_BW_LIMIT[$PROFILE_NAME]:-$BW_LIMIT}
CRITICAL_CONTAINER_NAMES=(${PROFILE_CRITICAL_CONTAINER_NAMES[$PROFILE_NAME]})
DELAYED_CONTAINERS=(${PROFILE_DELAYED_CONTAINERS[$PROFILE_NAME]})
CONTAINER_DELAY=${PROFILE_CONTAINER_DELAY[$PROFILE_NAME]:-$CONTAINER_DELAY}
RETRY_COUNT=${PROFILE_RETRY_COUNT[$PROFILE_NAME]:-$RETRY_COUNT}
SLEEP=${PROFILE_SLEEP[$PROFILE_NAME]:-$SLEEP}
EXCLUDE_DIRS=(${PROFILE_EXCLUDE_DIRS[$PROFILE_NAME]:-${EXCLUDE_DIRS[@]}})

echo "Settings: MAX_RSYNC_PROCS=$MAX_RSYNC_PROCS, BW_LIMIT=$BW_LIMIT, CONTAINERS=${CRITICAL_CONTAINER_NAMES[*]}, EXCLUDES=${EXCLUDE_DIRS[*]}"

# Main sync logic
main() {
    echo "[$LOCAL_SERVER_NAME] Syncing $DIRECTORY → $REMOTE_SERVER:$DIRECTORY"

    for i in $(seq 1 "$RETRY_COUNT"); do
        if check_server_online; then break; fi
        echo "Remote $REMOTE_SERVER_NAME down, retrying in $SLEEP seconds..."
        sleep "$SLEEP"
    done
    check_server_online || { echo "Remote $REMOTE_SERVER_NAME unreachable. Exiting."; exit 1; }

    wait_for_rsync
    stop_containers

    RSYNC_OPTS=(-av --info=progress2 --human-readable --bwlimit="$BW_LIMIT" --delete --inplace --no-whole-file)
    for ex in "${EXCLUDE_DIRS[@]}"; do RSYNC_OPTS+=(--exclude="$ex"); done
    [ "$DRY_RUN" = true ] && RSYNC_OPTS+=("--dry-run")

    for attempt in $(seq 1 "$RETRY_COUNT"); do
        echo "Starting rsync attempt $attempt/$RETRY_COUNT..."
        if rsync "${RSYNC_OPTS[@]}" -e "ssh -i \"$SSH_KEY\" -T -o Compression=no -o IPQoS=throughput" \
            "$DIRECTORY" "root@${REMOTE_SERVER}:$DIRECTORY"; then
            echo "Rsync completed successfully."
            break
        else
            echo "Rsync attempt $attempt failed."
            if [ "$attempt" -lt "$RETRY_COUNT" ]; then
                echo "Retrying in $SLEEP seconds..."
                sleep "$SLEEP"
            else
                echo "All $RETRY_COUNT rsync attempts failed."
                start_containers
                exit 1
            fi
        fi
    done

    start_containers
    echo "[$LOCAL_SERVER_NAME] Sync complete."
}

main