// This is an example script for Crash Assistant.
// It designed to demonstrate abilities of startup scripts and by default warn about over allocation of ram (more than system can provide).
// With startup scripts you can do including but not limited:
//     - Analyse ram alloction.
//     - Analyse jvm / minecraft args.
//     - Analyse modlist for incompatible / removed neccery mods.
// Full documentation and more examples: https://github.com/KostromDan/Crash-Assistant/blob/pages/guides/Scripting%20Support/Getting%20Started.md


// --- Configuration Area ---
var MIN_CRITICAL_GB = 4.0;
var MIN_RECOMMENDED_GB = 8.0;
var MAX_RECOMMENDED_GB = 12.0;
// --------------------------

// Most options are commented out. Please uncomment them to enable them.

var xmxBytes = MemoryUtils.getJvmMaxHeapBytes();
var xmxGB = MemoryUtils.bytesToGigabytes(xmxBytes);
var formattedXmx = MemoryUtils.formatMemorySize(xmxBytes);

// 1. Critical Minimum Check
//if (xmxGB < MIN_CRITICAL_GB) {
//    var msg = LanguageProvider.get("custom.critical_min");
//    msg = msg.replace("$XMX$", formattedXmx);
//    msg = msg.replace("$MIN_RECOMMENDED$", MIN_RECOMMENDED_GB.toString());
//    var warn = Startup.addBootWarning(msg);
//    warn.withMemoryAllocationGuide();
//}

// 2. Minimum Recommended Check
//else if (xmxGB < MIN_RECOMMENDED_GB) {
//    var msg = LanguageProvider.get("custom.min_recommended");
//    msg = msg.replace("$XMX$", formattedXmx);
//    msg = msg.replace("$MIN_RECOMMENDED$", MIN_RECOMMENDED_GB.toString());
//    var lowMemWarn = Startup.addBootWarning(msg);
//    lowMemWarn.withDontShowAgain("low_memory_check");
//    lowMemWarn.withMemoryAllocationGuide();
//}

// 3. Excessive Allocation Check
// Warning starts exactly when Xmx exceeds MAX_RECOMMENDED_GB.
//if (xmxGB > MAX_RECOMMENDED_GB) {
//    var msg = LanguageProvider.get("custom.excessive_allocation");
//    msg = msg.replace("$XMX$", formattedXmx);
//    msg = msg.replace("$MIN_RECOMMENDED$", MIN_RECOMMENDED_GB.toString());
//    msg = msg.replace("$MAX_RECOMMENDED$", MAX_RECOMMENDED_GB.toString());
//    var excessiveMemWarn = Startup.addBootWarning(msg);
//    excessiveMemWarn.withDontShowAgain("excessive_memory_check");
//    excessiveMemWarn.withMemoryAllocationGuide();
//}

// 4. Over-Allocation vs Total Capacity Check (Hardware Limit)
var totalSystemCapacity = MemoryUtils.getSystemTotalMemoryBytes() + MemoryUtils.getSystemTotalSwapBytes();
var exceedsTotalSystemCapacity = xmxBytes > totalSystemCapacity;
if (exceedsTotalSystemCapacity) {
    var msg = LanguageProvider.get("custom.over_allocation");
    msg = msg.replace("$XMX$", formattedXmx);
    msg = msg.replace("$TOTAL_CAPACITY$", MemoryUtils.formatMemorySize(totalSystemCapacity));
    var warn = Startup.addBootWarning(msg);
    warn.withMemoryAllocationGuide();
}

// 5. High System Load Check (Current Capacity)
var systemAvailable = MemoryUtils.getSystemFreeMemoryBytes() + MemoryUtils.getSystemFreeSwapBytes();
var jvmAllocated = MemoryUtils.getJvmAllocatedMemoryBytes();
var stillNeeded = xmxBytes - jvmAllocated;

if (!exceedsTotalSystemCapacity && xmxBytes > 0 && stillNeeded > 0 && systemAvailable < stillNeeded) {
    var msg = LanguageProvider.get("custom.high_system_load");
    msg = msg.replace("$XMX$", formattedXmx);
    msg = msg.replace("$AVAILABLE$", MemoryUtils.formatMemorySize(systemAvailable));
    var highLoadWarn = Startup.addBootWarning(msg);
    highLoadWarn.withDontShowAgain("high_system_load_check");
    highLoadWarn.withMemoryAllocationGuide();
}

// 6. Windows Swap/Pagefile Check
//if (PlatformHelp.isWindows() && MemoryUtils.getSystemTotalSwapBytes() == 0) {
//    var msg = LanguageProvider.get("custom.windows_no_swap");
//    msg = msg.replace("$XMX$", formattedXmx);
//    var noSwapWarn = Startup.addBootWarning(msg);
//    noSwapWarn.withDontShowAgain("windows_no_swap_check");
//    noSwapWarn.withMemoryAllocationGuide();
//}

// 7. Large Heap / ZGC Advice
//var jvmArgs = ArgUtils.getSafeJvmArgs();
//var launchArgs = ArgUtils.getSafeLaunchArgs();
//if (xmxGB > 12.0 && !jvmArgs.contains("-XX:+UseZGC")) {
//    var msg = LanguageProvider.get("custom.large_heap_zgc");
//    msg = msg.replace("$XMX$", formattedXmx);
//    var zgcWarn = Startup.addBootWarning(msg);
//    zgcWarn.withDontShowAgain("zgc_recommendation_check");
//    zgcWarn.withJvmArgsGuide();
//}