icloud-album-rs

A Rust library for interacting with iCloud shared albums.

Overview

This library allows you to fetch metadata and photos from iCloud shared albums using a token. It provides a simple, async API to:

• Parse iCloud shared album tokens
• Handle Apple's redirect responses
• Fetch album metadata and photo information
• Retrieve photo asset URLs
• Enrich photos with their download URLs

Installation

Add this to your Cargo.toml:

[dependencies]
icloud-album-rs = "0.2.0"
tokio = { version = "1", features = ["rt", "rt-multi-thread", "macros"] }

Usage

Basic Example

use icloud_album_rs::get_icloud_photos;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Your iCloud shared album token
    let token = "your_shared_album_token";
    
    // Fetch photos and metadata
    let response = get_icloud_photos(token).await?;
    
    // Print album info
    println!("Album: {}", response.metadata.stream_name);
    println!("Owner: {} {}", 
        response.metadata.user_first_name,
        response.metadata.user_last_name
    );
    println!("Photos: {}", response.photos.len());
    
    // Print information about each photo
    for (i, photo) in response.photos.iter().enumerate() {
        println!("Photo {}: {}", i + 1, photo.photo_guid);
        
        // Print the URL for each derivative
        for (key, derivative) in &photo.derivatives {
            if let Some(url) = &derivative.url {
                println!("  Derivative {}: {} ({}x{})", 
                    key, url, derivative.width.unwrap_or(0), derivative.height.unwrap_or(0));
            }
        }
    }
    
    Ok(())
}

Examples

The library includes several examples in the examples/ directory:

• fetch_album.rs: Basic example showing how to fetch and display album information
• album_info.rs: More detailed album metadata display with pretty formatting
• download_photos.rs: Shows how to download photos from an album to your local machine

Running the Examples

All examples require an iCloud shared album token. This is the string that appears after the URL when you share an album (e.g., https://share.icloud.com/photos/abc1234defg5678).

1. Fetch and display an album:

# Display detailed album information including all photos and their URLs
cargo run --example fetch_album -- "your_shared_album_token"

2. Show album information with pretty formatting:

# Display formatted album information and a summary of the first 5 photos
cargo run --example album_info -- "your_shared_album_token"

# With logging enabled (for debugging)
RUST_LOG=debug cargo run --example album_info -- "your_shared_album_token"

3. Download photos from an album:

# Download all photos from the album to the specified directory
cargo run --example download_photos -- "your_shared_album_token" "./download_dir"

The download example will:

• Create the download directory if it doesn't exist
• Find the highest resolution version of each photo
• Safely sanitize filenames based on photo captions
• Download all photos to the specified directory

Data Structures

The main response type is ICloudResponse which contains:

• metadata: Information about the album (name, owner, etc.)
• photos: A vector of Image objects

Each Image contains:

• photo_guid: A unique identifier for the photo
• derivatives: A map of derivative identifiers to Derivative objects
• Additional metadata (caption, creation date, dimensions)

Each Derivative contains:

• checksum: A unique identifier for the derivative
• file_size: Size in bytes (can be string or number in API)
• width, height: Dimensions in pixels (can be string or number in API)
• url: The download URL for the derivative

How it Works

1. The library generates a base URL from the token
2. It handles any redirects from the iCloud API
3. It fetches album metadata and photo information
4. It fetches URLs for all photo derivatives
5. It enriches the photos with their URLs

Features

• Fully async API using Tokio
• Robust error handling with graceful degradation
• Flexible API response parsing that handles Apple's inconsistent data formats
• JSON serialization/deserialization using Serde
• Retry logic for intermittent API failures with configurable backoff strategies
• Comprehensive test suite including real-world integration tests
• Integrated logging system using the log crate
• Detailed schema validation for API responses

Testing

The library includes a comprehensive test suite:

Regular Unit Tests

Run the basic unit tests with:

cargo test

Some tests are ignored by default to avoid runtime conflicts or external API calls.

Static Tests (Recommended Method)

To run tests that don't require HTTP mocking:

cargo run --example static_tests

These tests verify the core functionality of the library using static JSON responses without making HTTP requests or using mockito. This is the most reliable way to test the parsing logic.

Mockito Tests

To run all tests that use mockito:

cargo run --example mockito_standalone

This standalone launcher attempts to run all the mockito tests in separate processes to avoid runtime conflicts. It includes:

• API response tests
• Asset URL tests
• Redirect tests
• Integration tests

Note: Due to runtime conflicts between tokio and mockito, these tests may not always run reliably.

Individual Test Categories

You can also run individual test categories directly:

# Run API tests directly (may have runtime conflicts)
cargo test --test api_test -- --ignored

# Run redirect tests directly (may have runtime conflicts)
cargo test --test redirect_test -- --ignored

# Run integration tests directly (may have runtime conflicts)
cargo test --test integration_test -- --ignored

Real-World Integration Tests

To run tests against the actual iCloud API (requires internet connection):

cargo test --test real_world_test -- --ignored --nocapture

Note: This makes real API calls to Apple's servers.

Logging

The library uses the log crate for logging. You can enable and configure logging in your application:

// Initialize the env_logger (or any other logger implementation)
env_logger::init();

// Set log level via RUST_LOG environment variable
// Example: RUST_LOG=info,icloud_album_rs=debug cargo run

The library logs various events:

• Warnings for non-critical issues like API schema mismatches or type inconsistencies
• Debug information about API requests and responses
• Error details when operations fail

This is especially useful for diagnosing issues with the iCloud API and handling inconsistencies in responses.

Handling API Quirks

The library includes several features to handle quirks in Apple's iCloud API:

• Mixed Data Types: Apple sometimes returns numeric values as strings. The library handles both formats seamlessly.
• API Limitations: Handles 400 Bad Request responses gracefully, allowing partial functionality even when URL fetching fails.
• Retry Logic: Automatically retries failed requests with configurable backoff strategies, including exponential backoff with jitter.
• Schema Validation: Verifies API responses against expected schemas and provides detailed reporting on inconsistencies.

License

MIT

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.