export const VIP98K_RUNTIME_CONFIG_KEY = "vip98k_runtime_config";

export type Vip98kRuntimeConfig = {
  submissionTimeoutMs: number;
  modelSubmissionTimeoutMs: Record<string, number>;
  maxSubmissionAttempts: number;
  submissionRetryBaseDelayMs: number;
  referenceCacheTtlMs: number;
  referenceCacheMaxEntries: number;
};

export const defaultVip98kRuntimeConfig: Vip98kRuntimeConfig = {
  submissionTimeoutMs: 120_000,
  modelSubmissionTimeoutMs: {
    "nano-banana-pro": 240_000,
  },
  maxSubmissionAttempts: 3,
  submissionRetryBaseDelayMs: 5_000,
  referenceCacheTtlMs: 7 * 24 * 60 * 60 * 1000,
  referenceCacheMaxEntries: 2_000,
};

function clampInteger(
  value: unknown,
  fallback: number,
  minimum: number,
  maximum: number,
) {
  const numeric = Number(value);
  if (!Number.isFinite(numeric)) return fallback;
  return Math.min(maximum, Math.max(minimum, Math.round(numeric)));
}

function normalizeModelTimeouts(value: unknown) {
  const configured =
    value && typeof value === "object" && !Array.isArray(value)
      ? (value as Record<string, unknown>)
      : {};
  const normalized: Record<string, number> = {
    ...defaultVip98kRuntimeConfig.modelSubmissionTimeoutMs,
  };
  for (const [modelId, timeout] of Object.entries(configured)) {
    const normalizedModelId = modelId.trim().toLowerCase();
    if (!normalizedModelId || normalizedModelId.length > 160) continue;
    normalized[normalizedModelId] = clampInteger(
      timeout,
      defaultVip98kRuntimeConfig.submissionTimeoutMs,
      30_000,
      10 * 60_000,
    );
  }
  return normalized;
}

export function normalizeVip98kRuntimeConfig(value: unknown): Vip98kRuntimeConfig {
  const raw =
    value && typeof value === "object" && !Array.isArray(value)
      ? (value as Record<string, unknown>)
      : {};
  return {
    submissionTimeoutMs: clampInteger(
      raw.submissionTimeoutMs,
      defaultVip98kRuntimeConfig.submissionTimeoutMs,
      30_000,
      10 * 60_000,
    ),
    modelSubmissionTimeoutMs: normalizeModelTimeouts(
      raw.modelSubmissionTimeoutMs,
    ),
    maxSubmissionAttempts: clampInteger(
      raw.maxSubmissionAttempts,
      defaultVip98kRuntimeConfig.maxSubmissionAttempts,
      1,
      5,
    ),
    submissionRetryBaseDelayMs: clampInteger(
      raw.submissionRetryBaseDelayMs,
      defaultVip98kRuntimeConfig.submissionRetryBaseDelayMs,
      1_000,
      60_000,
    ),
    referenceCacheTtlMs: clampInteger(
      raw.referenceCacheTtlMs,
      defaultVip98kRuntimeConfig.referenceCacheTtlMs,
      5 * 60_000,
      30 * 24 * 60 * 60_000,
    ),
    referenceCacheMaxEntries: clampInteger(
      raw.referenceCacheMaxEntries,
      defaultVip98kRuntimeConfig.referenceCacheMaxEntries,
      100,
      10_000,
    ),
  };
}

export function resolveVip98kSubmissionTimeoutMs(
  modelId: string,
  config: Vip98kRuntimeConfig,
) {
  return (
    config.modelSubmissionTimeoutMs[modelId.trim().toLowerCase()] ||
    config.submissionTimeoutMs
  );
}