# TagProps Transformer

This tool transforms tag properties in JSON files by replacing the first value in the `tagProps` array with a path based on the element's name, an MCM number, and a device type.

## Usage

```bash
python tag_transformer.py <input_file.json> <mcm_number> [device_type]
```

### Example:

```bash
python tag_transformer.py sample_input.json 07 Conveyor
```

This will:
1. Read the input JSON file (`sample_input.json`)
2. For each element in the JSON, replace only the first value in the `tagProps` array with `System/MCM07/Conveyor/[ElementName]`
3. Output the transformed JSON to the console

### Auto Device Type Detection

If you don't specify a device type, the script will automatically determine the device type based on the element name:

- If the name contains `EPC` followed by "End" (e.g., `EPCEnd`, `EPC_End`, `EPC1_End`, `EPC2_End_1`), the device type will be `EPC_End`
- If the name contains `EPC` followed by a number (e.g., `EPC1`, `EPC2`, `EPC_1`), the device type will be `EPC`
- If the name contains `EPC` followed by "Line" (e.g., `EPCLine`, `EPC_Line`), the device type will be `EPC_Line`
- For all other cases, the device type will be `status`

Example:
```bash
python tag_transformer.py sample_input.json 07
```

## Output Format

The output will be a valid JSON array with the same structure as the input, but with the first value in each `tagProps` array replaced with the generated path.

## Saving Output to a File

To save the output to a file, you can redirect the console output:

```bash
python tag_transformer.py sample_input.json 07 Conveyor > output.json
```

## Requirements

- Python 3.6+
- No additional dependencies required