NapCatQQ/packages/napcat-onebot/action/extends/OCRImage.ts

import { OneBotAction } from '@/napcat-onebot/action/OneBotAction';
import { ActionName } from '@/napcat-onebot/action/router';
import { checkFileExist, uriToLocalFile } from 'napcat-common/src/file';
import fs from 'fs';
import { Static, Type } from '@sinclair/typebox';
import { GeneralCallResultStatus } from 'napcat-core';

const SchemaData = Type.Object({
  image: Type.String(),
});

type Payload = Static<typeof SchemaData>;

class OCRImageBase extends OneBotAction<Payload, GeneralCallResultStatus> {
  override payloadSchema = SchemaData;

  async _handle (payload: Payload) {
    const { path, success } = await uriToLocalFile(this.core.NapCatTempPath, payload.image);
    if (!success) {
      throw new Error(`OCR ${payload.image}失败, image字段可能格式不正确`);
    }
    if (path) {
      try {
        await checkFileExist(path, 5000); // 避免崩溃
        const ret = await this.core.apis.SystemApi.ocrImage(path);
        if (!ret) {
          throw new Error(`OCR ${payload.image}失败`);
        }
        return ret.result;
      } finally {
        fs.unlink(path, () => { });
      }
    }
    throw new Error(`OCR ${payload.image}失败, 文件可能不存在`);
  }
}

export class OCRImage extends OCRImageBase {
  override actionName = ActionName.OCRImage;
}

export class IOCRImage extends OCRImageBase {
  override actionName = ActionName.IOCRImage;
}