passage-to-bitwarden.py

import json
import uuid
import subprocess
from pathlib import Path

age_identity = Path("~/.passage/identities").expanduser()
store_dir = Path("~/.passage/store").expanduser()

folders = []
items = []

for root, dirs, files in store_dir.walk(on_error=print):
    root = root.relative_to(store_dir)

    if str(root).startswith(".git"):
        continue

    if str(root) != ".":
        folder_id = uuid.uuid4()
        folders.append({
            "name": str(root),
            "id": str(folder_id)
        })
    else:
        folder_id = None

    for file in files:
        file = Path(file)

        if not file.suffix == ".age":
            continue
        proc = subprocess.run(
            ['age', '-i', age_identity, '-d', store_dir / root / file],
            check=True, capture_output=True, encoding="utf-8"
        )
        first, rest = proc.stdout.split("\n", maxsplit=1)
        items.append({
            "folderId": str(folder_id),
            "type": 1, # login
            "name": file.stem,
            "notes": rest,
            "login": {
                "password": first
            },
        })

print(json.dumps({
    "folders": folders,
    "items": items
}))