anthropic-sdk-rust 0.1.1

use anthropic_sdk::{
    Anthropic,
    FileUploadParams, FileListParams, FilePurpose, FileOrder, FileStatus,
    UploadProgress, StorageInfo, FileDownload,
};
use std::{collections::HashMap, time::Duration};
use tokio::time::sleep;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("🚀 Phase 5.2: Files API Enhancement Demo");
    println!("========================================");

    // Initialize client (would normally use real API key)
    let client = match Anthropic::from_env() {
        Ok(client) => client,
        Err(_) => {
            println!("⚠️  ANTHROPIC_API_KEY not set. This is a demo of the Files API structure.");
            simulate_files_api_operations().await?;
            return Ok(());
        }
    };

    // Demo 1: File Upload with Different Purposes
    println!("\n📤 Demo 1: File Upload with Different Purposes");
    println!("----------------------------------------------");
    
    // Create sample files for different purposes
    demonstrate_file_uploads().await?;
    
    // Demo 2: Upload Progress Tracking
    println!("\n📈 Demo 2: Upload Progress Tracking");
    println!("-----------------------------------");
    
    simulate_upload_progress().await?;
    
    // Demo 3: File Listing and Management
    println!("\n📋 Demo 3: File Listing and Management");
    println!("--------------------------------------");
    
    demonstrate_file_listing().await?;
    
    // Demo 4: Storage Management
    println!("\n💾 Demo 4: Storage Management");
    println!("-----------------------------");
    
    demonstrate_storage_management().await?;
    
    // Demo 5: File Processing and Status Monitoring
    println!("\n⏳ Demo 5: File Processing and Status Monitoring");
    println!("------------------------------------------------");
    
    simulate_file_processing().await?;
    
    // Demo 6: Advanced File Operations
    println!("\n🔧 Demo 6: Advanced File Operations");
    println!("-----------------------------------");
    
    demonstrate_advanced_operations().await?;
    
    println!("\n🎉 Phase 5.2 Files API Enhancement Demo Complete!");
    println!("==================================================");
    println!("✅ File Upload: Multi-format support with progress tracking");
    println!("✅ File Management: List, filter, sort, and organize files");
    println!("✅ Storage Monitoring: Quota tracking and usage analytics");
    println!("✅ Status Tracking: Real-time processing status monitoring");
    println!("✅ Batch Operations: Concurrent uploads and cleanup utilities");
    println!("✅ Download & Processing: Content retrieval and format conversion");

    Ok(())
}

async fn simulate_files_api_operations() -> Result<(), Box<dyn std::error::Error>> {
    println!("🔄 Simulating Files API operations...");
    
    // Simulate the full workflow without actual API calls
    demonstrate_file_uploads().await?;
    simulate_upload_progress().await?;
    demonstrate_file_listing().await?;
    demonstrate_storage_management().await?;
    simulate_file_processing().await?;
    demonstrate_advanced_operations().await?;
    
    println!("✅ Files API simulation complete!");
    Ok(())
}

async fn demonstrate_file_uploads() -> Result<(), Box<dyn std::error::Error>> {
    println!("📂 Creating upload parameters for different file types...");
    
    // Vision file upload
    let vision_upload = create_sample_upload(
        "sample_image.jpg",
        "image/jpeg", 
        FilePurpose::Vision,
        b"fake_jpeg_data"
    ).with_meta("description", "Sample image for vision analysis");
    
    println!("   ✅ Vision upload: {} ({}) - {}", 
        vision_upload.filename, 
        vision_upload.content_type,
        format_bytes(vision_upload.content.len() as u64)
    );
    
    // Document upload
    let document_upload = create_sample_upload(
        "research_paper.pdf",
        "application/pdf",
        FilePurpose::Document,
        &create_fake_pdf_content()
    ).with_meta("category", "research")
     .with_meta("author", "AI Research Team");
    
    println!("   ✅ Document upload: {} ({}) - {}",
        document_upload.filename,
        document_upload.content_type, 
        format_bytes(document_upload.content.len() as u64)
    );
    
    // Batch input file
    let batch_upload = create_sample_upload(
        "batch_requests.jsonl",
        "application/json",
        FilePurpose::BatchInput,
        &create_sample_jsonl()
    );
    
    println!("   ✅ Batch input upload: {} ({}) - {}",
        batch_upload.filename,
        batch_upload.content_type,
        format_bytes(batch_upload.content.len() as u64)
    );
    
    // Validate uploads
    println!("\n🔍 Validating upload parameters...");
    if let Err(e) = vision_upload.validate() {
        println!("   ❌ Vision upload validation failed: {}", e);
    } else {
        println!("   ✅ Vision upload parameters valid");
    }
    
    if let Err(e) = document_upload.validate() {
        println!("   ❌ Document upload validation failed: {}", e);
    } else {
        println!("   ✅ Document upload parameters valid");
    }
    
    if let Err(e) = batch_upload.validate() {
        println!("   ❌ Batch upload validation failed: {}", e);
    } else {
        println!("   ✅ Batch upload parameters valid");
    }
    
    Ok(())
}

async fn simulate_upload_progress() -> Result<(), Box<dyn std::error::Error>> {
    println!("📊 Simulating file upload with progress tracking...");
    
    let file_size = 5 * 1024 * 1024; // 5MB file
    let mut uploaded = 0u64;
    let chunk_size = 256 * 1024; // 256KB chunks
    
    let start_time = std::time::Instant::now();
    
    while uploaded < file_size {
        let chunk = chunk_size.min(file_size - uploaded);
        uploaded += chunk;
        
        let elapsed = start_time.elapsed().as_secs_f64();
        let speed = if elapsed > 0.0 { uploaded as f64 / elapsed } else { 0.0 };
        
        let progress = UploadProgress::new(uploaded, file_size).with_speed(speed);
        
        println!("   📈 Upload Progress: {} | {} | Speed: {} | ETA: {}",
            progress.percentage_string(),
            progress.size_string(),
            progress.speed_string().unwrap_or("N/A".to_string()),
            progress.eta_string().unwrap_or("N/A".to_string())
        );
        
        // Simulate upload time
        sleep(Duration::from_millis(100)).await;
    }
    
    println!("   ✅ Upload completed successfully!");
    Ok(())
}

async fn demonstrate_file_listing() -> Result<(), Box<dyn std::error::Error>> {
    println!("📄 Creating file listing parameters...");
    
    // List all files
    let all_files_params = FileListParams::new()
        .limit(50)
        .order(FileOrder::NewestFirst);
    
    println!("   📋 All files query: limit={:?}, order={:?}",
        all_files_params.limit,
        all_files_params.order
    );
    
    // List vision files only
    let vision_files_params = FileListParams::new()
        .purpose(FilePurpose::Vision)
        .limit(20)
        .order(FileOrder::NewestFirst);
    
    println!("   🖼️  Vision files query: purpose={:?}, limit={:?}",
        vision_files_params.purpose,
        vision_files_params.limit
    );
    
    // List with pagination
    let paginated_params = FileListParams::new()
        .after("file_abc123")
        .limit(10);
    
    println!("   📄 Paginated query: after={:?}, limit={:?}",
        paginated_params.after,
        paginated_params.limit
    );
    
    // Simulate file listing results
    simulate_file_list_results().await;
    
    Ok(())
}

async fn simulate_file_list_results() {
    println!("\n📊 Simulated file listing results:");
    
    let mock_files = vec![
        ("file_001", "image.jpg", "image/jpeg", FilePurpose::Vision, FileStatus::Processed, 2048576),
        ("file_002", "document.pdf", "application/pdf", FilePurpose::Document, FileStatus::Processed, 5242880),
        ("file_003", "batch.jsonl", "application/json", FilePurpose::BatchInput, FileStatus::Processing, 1024),
        ("file_004", "photo.png", "image/png", FilePurpose::Vision, FileStatus::Error, 3145728),
        ("file_005", "data.txt", "text/plain", FilePurpose::Upload, FileStatus::Processed, 512),
    ];
    
    for (id, name, content_type, purpose, status, size) in mock_files {
        let status_icon = match status {
            FileStatus::Processed => "✅",
            FileStatus::Processing => "⏳",
            FileStatus::Error => "❌",
            FileStatus::Deleted => "🗑️",
        };
        
        let purpose_icon = match purpose {
            FilePurpose::Vision => "🖼️",
            FilePurpose::Document => "📄",
            FilePurpose::BatchInput => "📦",
            FilePurpose::BatchOutput => "📤",
            FilePurpose::Upload => "📁",
        };
        
        println!("   {} {} {} | {} | {} | {}",
            status_icon,
            purpose_icon,
            id,
            name,
            content_type,
            format_bytes(size)
        );
    }
}

async fn demonstrate_storage_management() -> Result<(), Box<dyn std::error::Error>> {
    println!("💾 Simulating storage information...");
    
    let storage = create_mock_storage_info();
    
    println!("   📊 Storage Usage: {}", storage.usage_string());
    println!("   📈 Usage Percentage: {:.1}%", storage.usage_percentage());
    println!("   📁 File Count: {}", storage.file_count);
    println!("   💽 Total Quota: {}", storage.quota_string());
    
    if storage.is_nearly_full() {
        println!("   ⚠️  Storage is nearly full (>90%)");
    } else if storage.is_full() {
        println!("   🚨 Storage is full!");
    } else {
        println!("   ✅ Storage has sufficient space");
    }
    
    // Show usage by purpose
    println!("\n   📂 Usage by Purpose:");
    for (purpose, bytes) in &storage.usage_by_purpose {
        let percentage = if storage.used_bytes > 0 {
            (*bytes as f64 / storage.used_bytes as f64) * 100.0
        } else {
            0.0
        };
        
        println!("      {} {} ({:.1}%)",
            purpose,
            format_bytes(*bytes),
            percentage
        );
    }
    
    Ok(())
}

async fn simulate_file_processing() -> Result<(), Box<dyn std::error::Error>> {
    println!("⚙️ Simulating file processing status monitoring...");
    
    let file_id = "file_processing_demo";
    let statuses = [
        (FileStatus::Processing, "File is being validated and processed"),
        (FileStatus::Processing, "Extracting content and metadata"),
        (FileStatus::Processing, "Running content analysis"),
        (FileStatus::Processed, "File processing completed successfully"),
    ];
    
    for (status, description) in statuses {
        let status_icon = match status {
            FileStatus::Processing => "⏳",
            FileStatus::Processed => "✅",
            FileStatus::Error => "❌",
            FileStatus::Deleted => "🗑️",
        };
        
        println!("   {} {}: {}", status_icon, file_id, description);
        
        if status.is_ready() {
            println!("   🎉 File is ready for use!");
            break;
        }
        
        // Simulate processing time
        sleep(Duration::from_millis(800)).await;
    }
    
    Ok(())
}

async fn demonstrate_advanced_operations() -> Result<(), Box<dyn std::error::Error>> {
    println!("🔧 Demonstrating advanced file operations...");
    
    // Batch upload simulation
    println!("\n   📦 Batch Upload (3 files concurrently):");
    let uploads = vec![
        ("file1.txt", "text/plain", 1024),
        ("file2.jpg", "image/jpeg", 2048576),
        ("file3.pdf", "application/pdf", 5242880),
    ];
    
    for (name, content_type, size) in uploads {
        println!("      ⬆️  {} ({}) - {}", name, content_type, format_bytes(size));
        sleep(Duration::from_millis(200)).await;
    }
    println!("      ✅ All files uploaded successfully!");
    
    // File cleanup simulation
    println!("\n   🧹 Cleanup Old Files (>30 days):");
    let old_files = ["old_file1.txt", "deprecated_image.jpg", "archived_doc.pdf"];
    for file in old_files {
        println!("      🗑️  Deleting: {}", file);
        sleep(Duration::from_millis(100)).await;
    }
    println!("      ✅ Cleaned up {} old files", old_files.len());
    
    // Download and processing simulation
    println!("\n   📥 File Download and Processing:");
    let download = create_mock_download();
    println!("      📄 Downloaded: {} ({}) - {}",
        download.filename,
        download.content_type,
        format_bytes(download.size)
    );
    
    // Show different content processing options
    if download.content_type.starts_with("text/") {
        println!("      📝 Text content preview: \"{}...\"", 
            String::from_utf8_lossy(&download.content[..50.min(download.content.len())])
        );
    } else if download.content_type == "application/json" {
        println!("      🔍 JSON structure detected - ready for parsing");
    } else {
        println!("      📦 Binary content - {} bytes available", download.content.len());
    }
    
    Ok(())
}

// Helper functions

fn create_sample_upload(filename: &str, content_type: &str, purpose: FilePurpose, content: &[u8]) -> FileUploadParams {
    FileUploadParams::new(
        content.to_vec(),
        filename,
        content_type,
        purpose,
    )
}

fn create_fake_pdf_content() -> Vec<u8> {
    // Simplified PDF header + content
    let mut content = b"%PDF-1.4\n".to_vec();
    content.extend_from_slice(b"Fake PDF content for demonstration purposes. ");
    content.extend_from_slice(b"This would be actual PDF binary data in a real scenario. ");
    content.extend_from_slice(&vec![0u8; 1024]); // Pad to make it look like a real file
    content
}

fn create_sample_jsonl() -> Vec<u8> {
    let jsonl_content = r#"{"custom_id": "req1", "method": "POST", "url": "/v1/messages", "body": {"model": "claude-3-5-sonnet-latest", "max_tokens": 1024, "messages": [{"role": "user", "content": "Hello"}]}}
{"custom_id": "req2", "method": "POST", "url": "/v1/messages", "body": {"model": "claude-3-5-sonnet-latest", "max_tokens": 1024, "messages": [{"role": "user", "content": "World"}]}}
"#;
    jsonl_content.as_bytes().to_vec()
}

fn create_mock_storage_info() -> StorageInfo {
    let mut usage_by_purpose = HashMap::new();
    usage_by_purpose.insert("vision".to_string(), 50 * 1024 * 1024);       // 50MB
    usage_by_purpose.insert("document".to_string(), 100 * 1024 * 1024);    // 100MB
    usage_by_purpose.insert("batch_input".to_string(), 10 * 1024 * 1024);  // 10MB
    usage_by_purpose.insert("upload".to_string(), 25 * 1024 * 1024);       // 25MB
    
    StorageInfo {
        quota_bytes: 1024 * 1024 * 1024,        // 1GB
        used_bytes: 185 * 1024 * 1024,          // 185MB
        available_bytes: 839 * 1024 * 1024,     // 839MB
        file_count: 42,
        usage_by_purpose,
    }
}

fn create_mock_download() -> FileDownload {
    let content = b"Sample file content for demonstration.\nThis could be text, JSON, or binary data.".to_vec();
    
    FileDownload {
        content: content.clone(),
        content_type: "text/plain".to_string(),
        filename: "sample_download.txt".to_string(),
        size: content.len() as u64,
    }
}

fn format_bytes(bytes: u64) -> String {
    const UNITS: &[&str] = &["B", "KB", "MB", "GB", "TB"];
    
    if bytes == 0 {
        return "0 B".to_string();
    }
    
    let mut size = bytes as f64;
    let mut unit_index = 0;
    
    while size >= 1024.0 && unit_index < UNITS.len() - 1 {
        size /= 1024.0;
        unit_index += 1;
    }
    
    if unit_index == 0 {
        format!("{} {}", size as u64, UNITS[unit_index])
    } else {
        format!("{:.1} {}", size, UNITS[unit_index])
    }
}