#!/bin/bash
# --- 1. Setup ---
mkdir -p /docker/keepalived/config /docker/keepalived/checks
REPO_BASE="/etc/komodo/repos/mapletree-pve${PVE_NUM}lxc${LXC_NUM}/lxc${LXC_NUM}/keepalived"
CONFIG_FILE="/docker/keepalived/config/keepalived.conf"

# --- 2. Build Header ---
if [ ! -f "${REPO_BASE}/keepalived_header.tpl" ]; then
    echo "ERROR: Header template not found at ${REPO_BASE}"
    exit 1
fi

cp "${REPO_BASE}/keepalived_header.tpl" "$CONFIG_FILE"
sed -i "s/{{LXC_NUM}}/${LXC_NUM}/g" "$CONFIG_FILE"

# --- 3. Parse "Hashtable" (SLOT_DEFINITIONS) ---
# Use a process substitution to avoid subshell variable scope issues
while IFS=',' read -r s_num s_name s_dep s_state s_prio s_peer s_vip junk
do
    # SANITY CHECKS:
    # Skip if the line is empty
    [[ -z "$s_num" ]] && continue
    # Skip if the line doesn't have enough columns (VIP is our 7th column)
    [[ -z "$s_vip" ]] && { echo "Skipping malformed line: $s_num"; continue; }

    echo "Processing Slot $s_num: $s_name"
    TEMP_SLOT="/tmp/slot_${s_num}.conf"
    cp "${REPO_BASE}/keepalived_slot.tpl" "$TEMP_SLOT"
    
    # Handle Password (8 char limit)
    FULL_PASS="${BASE_PASSWORD}-${s_num}"
    SHORT_PASS="${FULL_PASS:0:8}"

    # Inject variables
    sed -i "s/{{SLOT_NUM}}/${s_num}/g" "$TEMP_SLOT"
    sed -i "s/{{LXC_NUM}}/${LXC_NUM}/g" "$TEMP_SLOT"
    sed -i "s/{{SVC_NAME}}/${s_name}/g" "$TEMP_SLOT"
    sed -i "s/{{SVC_DEP}}/${s_dep}/g" "$TEMP_SLOT"
    sed -i "s/{{STATE}}/${s_state}/g" "$TEMP_SLOT"
    sed -i "s/{{PRIORITY}}/${s_prio}/g" "$TEMP_SLOT"
    sed -i "s/{{PEER}}/${s_peer}/g" "$TEMP_SLOT"
    sed -i "s/{{SVC_VIP}}/${s_vip}/g" "$TEMP_SLOT"
    sed -i "s/{{AUTH_PASS}}/${SHORT_PASS}/g" "$TEMP_SLOT"

    cat "$TEMP_SLOT" >> "$CONFIG_FILE"
    rm "$TEMP_SLOT"
done <<< "$SLOT_DEFINITIONS"

# --- 4. Finalize ---
cp "${REPO_BASE}/check_services.sh" /docker/keepalived/checks/check_services.sh
chmod +x /docker/keepalived/checks/check_services.sh

echo "Dynamic configuration generated for LXC