import { fileShare, fileIo as fs, fileUri } from '@kit.CoreFileKit';
import { FileUtil } from '@pura/harmony-utils';


//权限类
class PermissionUtil {
  //激活权限
  async activatePermission(uri: string | undefined): Promise<boolean> {
    if (!uri) {
      return false
    }
    try {
      let fd = fs.openSync(uri);
      fs.closeSync(fd);
      console.log("onecold activatePermission 无需激活权限");
      return true
    } catch {
      try {
        if (canIUse('SystemCapability.FileManagement.AppFileService.FolderAuthorization')) {
          uri = FileUtil.getUriFromPath(uri)
          console.log('onecold 激活权限 activatePermission uri = '+uri);
          let policyInfo: fileShare.PolicyInfo = {
            uri: uri,
            operationMode: fileShare.OperationMode.READ_MODE | fileShare.OperationMode.WRITE_MODE,
          };
          let policies: Array<fileShare.PolicyInfo> = [policyInfo];
          let results = await fileShare.checkPersistentPermission(policies);
          for (let i = 0; i < results.length; i++) {
            if (results[i]) {
              let info: fileShare.PolicyInfo = {
                uri: policies[i].uri,
                operationMode: policies[i].operationMode,
              };
              let policy: Array<fileShare.PolicyInfo> = [info];
              await fileShare.activatePermission(policy);
              console.log('onecold activatePermission 激活权限成功');
            }
          }
          let fd = fs.openSync(uri);
          fs.closeSync(fd);
        }
        return true
      } catch (error) {
        console.error('onecold activatePermission error = '+JSON.stringify(error));
        if (error.code == 13900001 ) {
          await this.persistPermission(uri)

        }
        return false
      }
    }
  }

  //持久化权限
  async persistPermission(uri: string): Promise<boolean> {
    try {
      if (canIUse('SystemCapability.FileManagement.AppFileService.FolderAuthorization')) {
        let policyInfo: fileShare.PolicyInfo = {
          uri: uri,
          operationMode: fileShare.OperationMode.READ_MODE | fileShare.OperationMode.WRITE_MODE,
        };
        let policies: Array<fileShare.PolicyInfo> = [policyInfo];
        fileShare.persistPermission(policies).then(() => {
        })
        let fd = await fs.open(uri);
        await fs.close(fd);
      }
    } catch (error) {
      return true
    }
    return false
  }
}

export default new PermissionUtil();