export const MODEL_INFO_CHANNEL = "dashboard:model-info";
export const REFRESH_CHANNEL = "dashboard:refresh";

export interface ModelInfoState {
  provider: string;
  modelId: string;
  modelName: string;
  thinking: string;
  contextTokens: number | null;
  contextWindow: number;
  contextPercent: number | null;
  cost: number;
  tokensPerSecond: number | null;
  generating: boolean;
}

export function emptyModelInfoState(): ModelInfoState {
  return {
    provider: "",
    modelId: "no-model",
    modelName: "No model",
    thinking: "off",
    contextTokens: null,
    contextWindow: 0,
    contextPercent: null,
    cost: 0,
    tokensPerSecond: null,
    generating: false,
  };
}

function isRecord(value: unknown): value is Record<string, unknown> {
  return typeof value === "object" && value !== null;
}

function isNullableNumber(value: unknown) {
  return value === null || typeof value === "number";
}

export function isModelInfoState(value: unknown): value is ModelInfoState {
  if (!isRecord(value)) return false;

  return (
    typeof value.provider === "string" &&
    typeof value.modelId === "string" &&
    typeof value.modelName === "string" &&
    typeof value.thinking === "string" &&
    isNullableNumber(value.contextTokens) &&
    typeof value.contextWindow === "number" &&
    isNullableNumber(value.contextPercent) &&
    typeof value.cost === "number" &&
    isNullableNumber(value.tokensPerSecond) &&
    typeof value.generating === "boolean"
  );
}