import type { SupportLogEntryDto } from "@mrp/shared";
import { randomUUID } from "node:crypto";

const SUPPORT_LOG_LIMIT = 200;

const supportLogs: SupportLogEntryDto[] = [];

function serializeContext(context?: Record<string, unknown>) {
  if (!context) {
    return "{}";
  }

  try {
    return JSON.stringify(context);
  } catch {
    return JSON.stringify({ serializationError: "Unable to serialize support log context." });
  }
}

export function recordSupportLog(entry: {
  level: SupportLogEntryDto["level"];
  source: string;
  message: string;
  context?: Record<string, unknown>;
}) {
  supportLogs.unshift({
    id: randomUUID(),
    level: entry.level,
    source: entry.source,
    message: entry.message,
    contextJson: serializeContext(entry.context),
    createdAt: new Date().toISOString(),
  });

  if (supportLogs.length > SUPPORT_LOG_LIMIT) {
    supportLogs.length = SUPPORT_LOG_LIMIT;
  }
}

export function listSupportLogs(limit = 50) {
  return supportLogs.slice(0, Math.max(0, limit));
}

export function getSupportLogCount() {
  return supportLogs.length;
}