//! Example: Timeline browsing
//!
//! This example demonstrates Immich's unique time-based asset organization.
//! Immich groups photos by date into "time buckets", allowing efficient
//! browsing of large photo collections chronologically.
//!
//! Environment variables:
//! - IMMICH_URL: The Immich server URL (defaults to http://localhost:2283)
//! - IMMICH_API_KEY: Your API key (required)

use immich_sdk::Client;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Configure the client from environment variables
    let url = std::env::var("IMMICH_URL").unwrap_or_else(|_| "http://localhost:2283".to_string());
    let api_key =
        std::env::var("IMMICH_API_KEY").expect("IMMICH_API_KEY environment variable not set");

    // Create a client
    let client = Client::from_url(&url)?.with_api_key(api_key);

    // Get all time buckets
    // Time buckets are date-based groupings (e.g., "2024-01-15")
    let buckets = client.timeline().buckets().execute().await?;
    println!("Found {} time buckets", buckets.len());

    if buckets.is_empty() {
        println!("No time buckets found. Upload some photos first!");
        return Ok(());
    }

    // Show first few buckets
    println!("\n--- First 5 Time Buckets ---");
    for (i, bucket) in buckets.iter().take(5).enumerate() {
        println!(
            "Bucket {}: {} - {} assets",
            i + 1,
            bucket.time_bucket,
            bucket.count
        );
    }

    // Get assets from the first bucket
    if let Some(first_bucket) = buckets.first() {
        println!(
            "\n--- Fetching assets from bucket: {} ---",
            first_bucket.time_bucket
        );

        let assets = client
            .timeline()
            .bucket(&first_bucket.time_bucket)
            .execute()
            .await?;

        println!("Found {} assets in this bucket", assets.id.len());

        // The TimeBucketAssetResponse contains parallel arrays
        // This is a memory-efficient design where each field is a column:
        // - assets.id[i], assets.file_created_at[i], etc. all refer to the same asset
        // - All arrays have the same length
        println!("\n--- Sample assets from this bucket (showing up to 5) ---");
        for i in 0..assets.id.len().min(5) {
            println!("  Asset {}:", i + 1);
            println!("    ID: {}", assets.id[i]);
            println!("    Created: {}", assets.file_created_at[i]);
            println!("    Is Image: {}", assets.is_image[i]);
            println!("    Is Favorite: {}", assets.is_favorite[i]);
            println!("    Owner ID: {}", assets.owner_id[i]);

            // Optional fields (may be None)
            if let Some(ref durations) = assets.duration {
                if let Some(duration) = &durations[i] {
                    println!("    Duration: {}", duration);
                }
            }
            if let Some(ref cities) = assets.city {
                if let Some(city) = &cities[i] {
                    println!("    City: {}", city);
                }
            }
            if let Some(ref countries) = assets.country {
                if let Some(country) = &countries[i] {
                    println!("    Country: {}", country);
                }
            }
        }

        // Demonstrate iterating through parallel arrays
        println!("\n--- Understanding the parallel array structure ---");
        println!("The response contains these parallel arrays (all same length):");
        println!("  - id.len() = {}", assets.id.len());
        println!(
            "  - file_created_at.len() = {}",
            assets.file_created_at.len()
        );
        println!("  - is_image.len() = {}", assets.is_image.len());
        println!("  - is_favorite.len() = {}", assets.is_favorite.len());
        println!("  - owner_id.len() = {}", assets.owner_id.len());
        println!("\nIndex 'i' corresponds to the same asset across all arrays.");
        println!("This columnar structure is memory-efficient for large collections.");
    }

    // Demonstrate filtering with the timeline API
    println!("\n--- Timeline API supports filtering ---");
    println!("You can filter time buckets with:");
    println!("  - album_id: Filter by specific album");
    println!("  - is_favorite: Show only favorited assets");
    println!("  - is_trashed: Include/exclude trashed assets");
    println!("  - visibility: Timeline, Archive, Hidden, or Locked");
    println!("  - with_partners: Include assets shared by partners");

    // Example: Get only favorite buckets
    let favorite_buckets = client
        .timeline()
        .buckets()
        .is_favorite(true)
        .execute()
        .await?;
    println!(
        "\nFound {} time buckets with favorite assets",
        favorite_buckets.len()
    );

    Ok(())
}