URL上のファイルをJinba Flowでテキストとして読む

- id: read_file
  tool: INPUT_FILE_AS_TEXT
  input:
    - name: value
      value: "https://example.com/config.json"
    - name: description
      value: "処理する設定ファイル"

- id: summarize_file
  tool: OPENAI_INVOKE
  needs: [read_file]
  input:
    - name: prompt
      value: |
        ファイルの内容を要約してください。CSVなら列名も挙げてください。
        {{steps.read_file.result}}

- id: read_config
  tool: INPUT_FILE_AS_TEXT
  input:
    - name: value
      value: "https://example.com/config.json"

- id: check_config
  tool: PYTHON_SANDBOX_RUN
  needs: [read_config]
  input:
    - name: data_type
      value: OBJECT
    - name: code
      value: |
        import json

        text = r'''{{steps.read_config.result}}'''.strip()
        required = ["database_url", "api_key"]

        try:
            config = json.loads(text) if text else None
            error = None if isinstance(config, dict) else "Config must be a JSON object"
        except json.JSONDecodeError as e:
            config, error = None, f"Invalid JSON: {e}"

        missing = [key for key in required if not config.get(key)] if error is None else []

        print(json.dumps({"valid": error is None and not missing, "error": error, "missing": missing}))