#!/bin/sh

# Self-update from remote source
SELF_URL="https://gitea.qortal.link/crowetic/qortal-DevNet-scripts/raw/branch/main/start-with-validation.sh"
SCRIPT_DIR="$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)"
TMP_DIR="${SCRIPT_DIR}/tmp"
mkdir -p "$TMP_DIR"
cleanup_tmp() {
    rm -rf "$TMP_DIR"
}
trap cleanup_tmp EXIT
SELF_PATH="$0"
TARGET_NAME="start.sh"
if [ "$(basename -- "$SELF_PATH")" != "$TARGET_NAME" ]; then
    SELF_PATH="${SCRIPT_DIR}/${TARGET_NAME}"
fi
TMP_SELF="${TMP_DIR}/start-with-validation.$$"

if command -v wget > /dev/null 2>&1; then
    wget -qO "$TMP_SELF" "$SELF_URL"
elif command -v curl > /dev/null 2>&1; then
    curl -s -o "$TMP_SELF" "$SELF_URL"
else
    TMP_SELF=""
fi

if [ -n "$TMP_SELF" ] && [ -f "$TMP_SELF" ]; then
    if [ ! -f "$SELF_PATH" ] || ! cmp -s "$TMP_SELF" "$SELF_PATH"; then
        echo "Updating start-with-validation.sh..."
        cp "$TMP_SELF" "$SELF_PATH"
        chmod +x "$SELF_PATH"
        rm -f "$TMP_SELF"
        cleanup_tmp
        exec "$SELF_PATH" "$@"
    fi
    rm -f "$TMP_SELF"
fi

# There's no need to run as root, so don't allow it, for security reasons
if [ "$USER" = "root" ]; then
	echo "Please su to non-root user before running"
	exit
fi

# Validate Java is installed and the minimum version is available
MIN_JAVA_VER='11'

if command -v java > /dev/null 2>&1; then
    # Example: openjdk version "11.0.6" 2020-01-14
    version=$(java -version 2>&1 | awk -F '"' '/version/ {print $2}' | cut -d'.' -f1,2)
    if echo "${version}" "${MIN_JAVA_VER}" | awk '{ if ($2 > 0 && $1 >= $2) exit 0; else exit 1}'; then
        echo 'Passed Java version check'
    else
        echo "Please upgrade your Java to version ${MIN_JAVA_VER} or greater"
        exit 1
    fi
else
  echo "Java is not available, please install Java ${MIN_JAVA_VER} or greater"
  exit 1
fi

# Check if qortal.jar exists
if [ ! -e qortal.jar ]; then
    echo "qortal.jar not found. Downloading latest version..."
    # Download the latest qortal.jar
    if command -v wget > /dev/null 2>&1; then
        wget -qO qortal.jar https://cloud.qortal.org/s/QortalDevNetJarLatest/download/qortal.jar
    elif command -v curl > /dev/null 2>&1; then
        curl -s -o qortal.jar https://cloud.qortal.org/s/QortalDevNetJarLatest/download/qortal.jar
    else
        echo "Neither wget nor curl found. Please install one of them."
        exit 1
    fi
fi

if command -v md5sum > /dev/null 2>&1; then
    HASH_FILE="${TMP_DIR}/hash.txt"
    COMPARE_FILE="${TMP_DIR}/compare.txt"
    # Download hash.txt for comparison
    echo "Downloading hash.txt for validation..."
    if command -v wget > /dev/null 2>&1; then
        wget -qO "$HASH_FILE" https://cloud.qortal.org/s/QortalDevNetJarHashFile/download/hash.txt
    elif command -v curl > /dev/null 2>&1; then
        curl -s -o "$HASH_FILE" https://cloud.qortal.org/s/QortalDevNetJarHashFile/download/hash.txt
    else
        echo "Neither wget nor curl found. Please install one of them."
        exit 1
    fi

    # Generate md5sum of local qortal.jar
    echo "Generating MD5 checksum of local qortal.jar..."
    md5sum qortal.jar | awk '{print $1}' > "$COMPARE_FILE"

    # Compare the hashes
    echo "Validating qortal.jar file..."
    if cmp -s "$HASH_FILE" "$COMPARE_FILE"; then
        echo "qortal.jar is up to date!"
    else
        echo "qortal.jar is outdated. Downloading latest version..."
        # Download the latest qortal.jar
        if command -v wget > /dev/null 2>&1; then
            wget -qO qortal.jar https://cloud.qortal.org/s/QortalDevNetJarLatest/download/qortal.jar
        elif command -v curl > /dev/null 2>&1; then
            curl -s -o qortal.jar https://cloud.qortal.org/s/QortalDevNetJarLatest/download/qortal.jar
        else
            echo "Neither wget nor curl found. Please install one of them."
            exit 1
        fi
        echo "qortal.jar has been updated to the latest version."
    fi

    # Clean up temporary files
    rm -f "$COMPARE_FILE" "$HASH_FILE"
else
    echo "md5sum not found; skipping qortal.jar validation."
fi

LOCAL_SETTINGS="settings.json"
if [ -f "$LOCAL_SETTINGS" ]; then
    if command -v jq > /dev/null 2>&1; then
        if ! jq -e . "$LOCAL_SETTINGS" > /dev/null 2>&1; then
            echo "Warning: settings.json is not valid JSON; skipping fixedNetwork removal."
        else
            has_fixed=$(jq -r 'has("fixedNetwork")' "$LOCAL_SETTINGS" 2>/dev/null || echo "false")
            if [ "$has_fixed" = "true" ]; then
                TMP_SETTINGS="${TMP_DIR}/settings.json.tmp"
                if jq 'del(.fixedNetwork)' "$LOCAL_SETTINGS" > "$TMP_SETTINGS"; then
                    mv "$TMP_SETTINGS" "$LOCAL_SETTINGS"
                    echo "Removed fixedNetwork from settings.json."
                else
                    rm -f "$TMP_SETTINGS"
                    echo "Warning: failed to remove fixedNetwork from settings.json."
                fi
            fi
        fi
    elif command -v python3 > /dev/null 2>&1; then
        LOCAL_SETTINGS_PATH="$LOCAL_SETTINGS" python3 - <<'PY'
import json
import os
import sys

settings_path = os.environ.get("LOCAL_SETTINGS_PATH")
try:
    with open(settings_path, "r", encoding="utf-8") as fh:
        data = json.load(fh)
except Exception:
    print("Warning: settings.json is not valid JSON; skipping fixedNetwork removal.")
    sys.exit(0)

if "fixedNetwork" not in data:
    sys.exit(0)

data.pop("fixedNetwork", None)
with open(settings_path, "w", encoding="utf-8") as fh:
    json.dump(data, fh, indent=2)
    fh.write("\n")

print("Removed fixedNetwork from settings.json.")
PY
    else
        echo "Warning: jq/python3 not found; skipping fixedNetwork removal."
    fi
fi

# No qortal.jar but we have a Maven built one?
# Be helpful and copy across to correct location
if [ ! -e qortal.jar -a -f target/qortal*.jar ]; then
	echo "Copying Maven-built Qortal JAR to correct pathname"
	cp target/qortal*.jar qortal.jar
fi

# Limits Java JVM stack size and maximum heap usage.
# Comment out for bigger systems, e.g. non-routers
# or when API documentation is enabled
# Uncomment (remove '#' sign) line below if your system has less than 12GB of RAM for optimal RAM defaults
JVM_MEMORY_ARGS="-XX:MaxRAMPercentage=80 -Xss5m -XX:+UseSerialGC"

# Although java.net.preferIPv4Stack is supposed to be false
# by default in Java 11, on some platforms (e.g. FreeBSD 12),
# it is overridden to be true by default. Hence we explicitly
# set it to false to obtain desired behaviour.
if [ -f run.pid ] && command -v ps > /dev/null 2>&1; then
    pid=$(cat run.pid 2>/dev/null || true)
    if [ -n "$pid" ] && ps -p "$pid" -o args= 2>/dev/null | grep -q 'java .* -jar qortal\.jar'; then
        echo "qortal appears to be running already (run.pid); skipping start."
        exit 0
    fi
fi

nohup nice -n 20 java \
	-Djava.net.preferIPv4Stack=false \
	${JVM_MEMORY_ARGS} \
	-jar qortal.jar \
	1>run.log 2>&1 &

# Save backgrounded process's PID
echo $! > run.pid
echo qortal running as pid $!