#!/bin/bash
# =============================================================================
# SAP HANA Common Configuration
# =============================================================================

# --- HANA Instance Configuration ---
# HANA SID (e.g., "NDB") - used to derive the HANA user (<sid>adm)
HANA_SID="NDB"

# Derived HANA Linux user (automatically computed from HANA_SID)
HANA_USER="$(echo "$HANA_SID" | tr '[:upper:]' '[:lower:]')adm"

# HANA Instance Number (e.g., "00")
HANA_INSTANCE_NR="00"

# HANA User Key for hdbsql (hdbuserstore key)
HANA_USER_KEY="CRONKEY"

# --- Paths ---
SAPCONTROL_PATH="/usr/sap/hostctrl/exe/sapcontrol"
HDBSQL_PATH="/usr/sap/HDB/HDB${HANA_INSTANCE_NR}/exe/hdbsql"

# --- Monitoring Directories ---
DIRECTORIES_TO_MONITOR=(
    "/hana/shared"
    "/hana/log"
    "/hana/data"
    "/usr/sap"
)

# --- Directories for Auto-Delete ---
# These directories will be automatically cleaned when disk space is low
# Format: "mount_point:directory_path"
# The script will check if a monitored directory is on the same mount point
# as an auto-delete directory and can clean it to free up space
# NOTE: Do NOT include HANA system logs like /hana/log - only include
# directories with safe-to-delete files like backup logs, temp files, etc.
DIRS_FOR_AUTODELETE=(
    "/hana/shared:/hana/shared/backup/schema/DB_NDB"
    "/hana/shared:/hana/shared/backup/schema/SYSTEMDB"
    "/hana/data:/hana/data/temp"
    "/usr/sap:/usr/sap/trans/log"
    "/usr/sap:/usr/sap/hostctrl/work/log"
)

# --- Disk Auto-Delete Configuration ---
# Minimum free space percentage to maintain after cleanup
MIN_FREE_SPACE_AFTER_CLEANUP=5
# Maximum age of files to delete (in days)
MAX_FILE_AGE_DAYS=7
# Enable automatic cleanup when disk usage exceeds threshold
AUTO_CLEANUP_ENABLED=true

# --- Thresholds ---
DISK_USAGE_THRESHOLD=85
TRUNCATED_PERCENTAGE_THRESHOLD=50
FREE_PERCENTAGE_THRESHOLD=10
STATEMENT_QUEUE_THRESHOLD=10
STATEMENT_QUEUE_CONSECUTIVE_RUNS=3
BACKUP_THRESHOLD_HOURS=32

# --- Notification Configuration ---
NTFY_TOKEN=""
NTFY_TOPIC_URL=""
COMPANY_NAME="My Company"

# --- Logging Configuration ---
LOG_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd)"
LOG_FILE="${LOG_DIR}/hana_monitor.log"

# --- State Directory ---
STATE_DIR="${LOG_DIR}/monitor_state"
mkdir -p "${STATE_DIR}"

# --- Lock Directory ---
LOCK_DIR="/tmp"