// 仓颉意图引擎桥：entry(ArkTS) → cjagent(HAR, 仓颉 so)
// 仓颉侧只做文本→意图 JSON 的解析，后端调用仍在 ArkTS 侧执行
import { parseIntent, splitIntents, inferSlot } from 'libohos_app_cangjie_cjagent.so'

export interface IntentResult {
  action: string;
  slot: string;
  date: string;
  jump: string;
}

export function parseIntentCj(text: string): IntentResult | null {
  try {
    const json: string = parseIntent(text);
    return JSON.parse(json) as IntentResult;
  } catch (err) {
    console.error('[IntentEngine] cangjie parse failed:', (err as Error).message);
    return null;
  }
}

export interface SegmentResult {
  segments: string[];
}

// 多意图拆分：仓颉按连接词/标点切句；单意图时返回 null（走原路径零开销）
export function splitSegmentsCj(text: string): string[] | null {
  try {
    const json: string = splitIntents(text);
    const parsed = JSON.parse(json) as SegmentResult;
    if (parsed.segments.length > 1) {
      return parsed.segments;
    }
    return null;
  } catch (err) {
    console.error('[IntentEngine] cangjie split failed:', (err as Error).message);
    return null;
  }
}

// 餐次推断（仓颉决策链）：按小时返回 breakfast/lunch/dinner，失败时 ArkTS 本地兜底
export function inferSlotCj(hour: number): string {
  try {
    const json: string = inferSlot(hour);
    const parsed = JSON.parse(json) as { slot: string };
    return parsed.slot;
  } catch (err) {
    console.error('[IntentEngine] cangjie inferSlot failed:', (err as Error).message);
    return hour < 9 ? 'breakfast' : (hour < 15 ? 'lunch' : 'dinner');
  }
}