CloudScope

A terminal UI for browsing, downloading, uploading, and bi-directionally syncing files across AWS S3, Google Cloud Storage, and Google Drive.

Built with Textual for a keyboard-driven, Linear.app-inspired dark interface.

Features

• Multi-backend browsing — Switch between S3, GCS, and Google Drive with a single keypress (1, 2, 3)
• Lazy-loading tree sidebar — Expand buckets/drives on demand without loading everything upfront
• Sortable file table — Click column headers to sort by name, size, modified date, or type
• File preview — Metadata panel appears when a file is highlighted (size, modified date, ETag, content type)
• Downloads and uploads — File picker dialogs for selecting local paths
• Folder creation — Create new folders/prefixes directly from the TUI
• Bi-directional sync — Three-way diff engine with conflict resolution (newer wins, local wins, remote wins, keep both, or ask)
• Command palette — Press Ctrl+K to search and run any command
• Settings screen — Configure default backend, AWS profile/region, GCP project, Drive OAuth credentials
• Auth setup — Guided authentication testing for each backend

Requirements

• Python 3.11+
• AWS credentials (for S3) — environment variables, ~/.aws/credentials, or IAM role
• GCP credentials (for GCS) — Application Default Credentials (gcloud auth application-default login)
• OAuth2 client secrets (for Google Drive) — client_secrets.json placed in config directory

Installation

From source

git clone https://github.com/your-username/cloudscope.git
cd cloudscope
pip install -e .

With dev dependencies

pip install -e ".[dev]"

Run

cloudscope

Or via module:

python -m cloudscope

Authentication Setup

AWS S3

CloudScope uses standard boto3 credential resolution. Any of the following will work:

• Environment variables (AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY)
• Shared credentials file (~/.aws/credentials)
• AWS config file (~/.aws/config) with named profiles
• IAM instance role (on EC2)

Configure a specific profile in Settings (,) or pass it through the config file at ~/.config/cloudscope/config.toml.

Google Cloud Storage

Uses Application Default Credentials:

gcloud auth application-default login

Or point to a service account key in Settings.

Google Drive

Requires OAuth2 consent flow:

1. Create OAuth credentials in the Google Cloud Console
2. Download the client secrets JSON
3. Place it at ~/.config/cloudscope/drive_client_secrets.json (or configure the path in Settings)
4. Press a in CloudScope to run the auth flow — a browser window will open for consent

The token is persisted at ~/.config/cloudscope/drive_token.json and refreshed automatically.

Keyboard Shortcuts

Browsing

Key	Action
1	Switch to S3
2	Switch to GCS
3	Switch to Google Drive
d	Download selected file
u	Upload a file
n	Create new folder
Delete	Delete selected file
r	Refresh current view
Tab	Focus next panel
Shift+Tab	Focus previous panel
Ctrl+K	Open command palette
s	Open sync configuration
,	Open settings
a	Open auth setup
?	Show help
q	Quit

In file table

Key	Action
Up/Down	Navigate files
Enter	Open folder or select file
Click column header	Sort by that column

Configuration

Settings are stored at ~/.config/cloudscope/config.toml:

default_backend = "s3"
max_concurrent_transfers = 3

[backends.s3]
profile = "default"
region = "us-east-1"

[backends.gcs]
project = "my-project-id"

[backends.drive]
client_secrets_path = "/path/to/client_secrets.json"

All settings can also be edited from the TUI via the Settings screen (,).

Project Structure

src/cloudscope/
├── app.py                  # Main Textual application
├── config.py               # TOML config management
├── __main__.py             # CLI entry point
├── auth/
│   ├── aws.py              # AWS profile listing and client creation
│   ├── gcp.py              # GCS client creation (ADC or service account)
│   └── drive_oauth.py      # Google Drive OAuth2 flow
├── backends/
│   ├── base.py             # CloudBackend Protocol and error hierarchy
│   ├── registry.py         # Backend factory (register/get/list)
│   ├── s3.py               # AWS S3 backend (boto3)
│   ├── gcs.py              # Google Cloud Storage backend
│   └── drive.py            # Google Drive backend (path-to-ID cache, export)
├── models/
│   ├── cloud_file.py       # CloudFile, CloudFileType, CloudLocation
│   ├── transfer.py         # TransferJob, TransferDirection, TransferStatus
│   └── sync_state.py       # SyncRecord, SyncConflict, SyncPlan, etc.
├── sync/
│   ├── state.py            # SQLite-backed sync state persistence
│   ├── differ.py           # Three-way diff algorithm
│   ├── resolver.py         # Conflict resolution strategies
│   ├── plan.py             # Converts SyncDiff to executable SyncPlan
│   └── engine.py           # Sync orchestrator (diff → plan → execute)
├── transfer/
│   ├── manager.py          # Concurrent transfer queue (asyncio.Semaphore)
│   └── progress.py         # Progress adapter for SDK callbacks
└── tui/
    ├── commands.py          # Command palette provider (Ctrl+K)
    ├── screens/
    │   ├── browse.py        # Main browsing screen
    │   ├── settings.py      # Settings form
    │   ├── sync_config.py   # Sync configuration and execution
    │   └── auth_setup.py    # Guided auth testing
    ├── modals/
    │   ├── confirm_dialog.py
    │   ├── download_dialog.py
    │   ├── upload_dialog.py
    │   ├── new_folder.py
    │   └── sync_dialog.py   # Sync conflict resolution
    ├── widgets/
    │   ├── status_bar.py    # AppHeader (slim 1-line header)
    │   ├── app_footer.py    # Context-sensitive keybind hints
    │   ├── cloud_tree.py    # Lazy-loading tree sidebar
    │   ├── file_table.py    # Sortable file listing (DataTable)
    │   ├── breadcrumb.py    # Path breadcrumb with › separators
    │   ├── preview_panel.py # File metadata display
    │   └── transfer_panel.py# Transfer progress bar
    └── styles/
        └── cloudscope.tcss  # Linear-inspired dark theme

Development

# Install with dev dependencies
pip install -e ".[dev]"

# Lint
ruff check src/

# Type check
mypy src/cloudscope/

# Test
pytest

# Run with Textual dev tools (live CSS reloading, etc.)
textual run --dev cloudscope.app:CloudScopeApp

License

MIT