merge-json

#!/usr/bin/env python3
import json
import sys
import os
from collections import OrderedDict

def print_help():
    print("""
Merges all JSON files in the specified directory.

### Usage:

```
$ ./merge-json <directory>
```

E.g. Merge all JSON files in the current directory.
```
$ ./merge-json .
```

The outfile JSON file is saved in the current working directory as `merged.json`.
    """)


try:
    if len(sys.argv) < 2:
        print_help()
    else:
        input_dir = sys.argv[1]

        if not input_dir:
            print("No directory specified!")
        else:
            combined_data = OrderedDict()
            count = 1
            print("\nFiles to be merged:")
            for filename in sorted(os.listdir(input_dir)):
                filename = os.path.join(input_dir, filename)
                if filename.endswith(".json"):
                    print(filename)
                    with open(filename, "r+") as file:
                        combined_data[f"file_{count}"] = json.load(file)
                        count += 1

            if combined_data:
                json.dump(combined_data, fp=open("merged.json", "w"), indent=4)
                print(f"\nJSON merge complete! Saved as: ./merged.json\n")
            else:
                print("\nError! No JSON files found.\n")


except Exception as e:
    print(f"Error! Check script comments for usage details!")
    print(e, "\n")