#!/usr/bin/env bash

set -euo pipefail

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
ENV_FILE="${ENV_FILE:-$ROOT_DIR/.env}"

if [[ -f "$ENV_FILE" ]]; then
    set -a
    # shellcheck disable=SC1090
    source "$ENV_FILE"
    set +a
fi

REALM_ID="${ACORE_REALMLIST_ID:-1}"
REALM_NAME="${ACORE_REALMLIST_NAME:-MoonWell}"
REALM_PUBLIC_ADDRESS="${ACORE_REALMLIST_PUBLIC_ADDRESS:-127.0.0.1}"
REALM_LOCAL_ADDRESS="${ACORE_REALMLIST_LOCAL_ADDRESS:-127.0.0.1}"
REALM_LOCAL_SUBNET_MASK="${ACORE_REALMLIST_LOCAL_SUBNET_MASK:-255.255.255.0}"
REALM_PORT="${ACORE_REALMLIST_PORT:-${DOCKER_WORLD_EXTERNAL_PORT:-8085}}"

usage() {
    cat <<EOF
Usage: $(basename "$0")

Synchronizes acore_auth.realmlist with values from .env.
EOF
}

log() {
    printf '[sync-realmlist] %s\n' "$*"
}

require_integer() {
    local name="$1"
    local value="$2"
    if ! [[ "$value" =~ ^[0-9]+$ ]]; then
        printf '%s must be a positive integer, got: %s\n' "$name" "$value" >&2
        exit 1
    fi
}

sql_quote() {
    local value="$1"
    value="${value//\\/\\\\}"
    value="${value//\'/\\\'}"
    printf "'%s'" "$value"
}

if (($# > 0)); then
    case "$1" in
        -h|--help)
            usage
            exit 0
            ;;
        *)
            printf 'Unknown option: %s\n\n' "$1" >&2
            usage >&2
            exit 1
            ;;
    esac
fi

require_integer "ACORE_REALMLIST_ID" "$REALM_ID"
require_integer "ACORE_REALMLIST_PORT" "$REALM_PORT"

if [[ -z "$REALM_NAME" || -z "$REALM_PUBLIC_ADDRESS" || -z "$REALM_LOCAL_ADDRESS" || -z "$REALM_LOCAL_SUBNET_MASK" ]]; then
    printf 'realmlist values must not be empty\n' >&2
    exit 1
fi

cd "$ROOT_DIR"

if ! docker compose ps --status running --services | grep -qx 'ac-database'; then
    printf 'ac-database is not running. Start the server first with ./start-server.sh\n' >&2
    exit 1
fi

SQL=$(cat <<EOF
INSERT INTO realmlist (id, name, address, localAddress, localSubnetMask, port, icon, flag, timezone, allowedSecurityLevel, population, gamebuild)
VALUES (
    ${REALM_ID},
    $(sql_quote "$REALM_NAME"),
    $(sql_quote "$REALM_PUBLIC_ADDRESS"),
    $(sql_quote "$REALM_LOCAL_ADDRESS"),
    $(sql_quote "$REALM_LOCAL_SUBNET_MASK"),
    ${REALM_PORT},
    0,
    0,
    1,
    0,
    0,
    12340
)
ON DUPLICATE KEY UPDATE
    name = VALUES(name),
    address = VALUES(address),
    localAddress = VALUES(localAddress),
    localSubnetMask = VALUES(localSubnetMask),
    port = VALUES(port);

SELECT id, name, address, localAddress, localSubnetMask, port, gamebuild
FROM realmlist
WHERE id = ${REALM_ID};
EOF
)

log "syncing realm ${REALM_ID}: ${REALM_NAME} -> ${REALM_PUBLIC_ADDRESS}:${REALM_PORT}"

docker compose exec -T ac-database bash -lc 'mysql -uroot -p"$MYSQL_ROOT_PASSWORD" acore_auth' <<<"$SQL"

if docker compose ps --status running --services | grep -qx 'ac-authserver'; then
    log "restarting authserver so it reloads realmlist"
    docker compose restart ac-authserver >/dev/null
else
    log "authserver is not running, skipped restart"
fi

log "realmlist synced"