//! Demo: Find all PlaySFX components and their locations in VR_Horror_YouCantRun
//!
//! This example demonstrates:
//! 1. Parsing a real Unity project
//! 2. Finding custom MonoBehaviour components (PlaySFX)
//! 3. Querying the ECS world for components
//! 4. Accessing Transform data for component locations

use unity_parser::{UnityComponent, UnityFile};
use std::path::Path;

/// PlaySFX component from VR_Horror_YouCantRun
///
/// C# definition:
/// ```csharp
/// public class PlaySFX : MonoBehaviour
/// {
///     [SerializeField] float volume;
///     [SerializeField] float startTime;
///     [SerializeField] float endTime;
///     [SerializeField] bool isLoop;
/// }
/// ```
#[derive(Debug, Clone, UnityComponent)]
#[unity_class("PlaySFX")]
pub struct PlaySFX {
    #[unity_field("volume")]
    pub volume: f64,

    #[unity_field("startTime")]
    pub start_time: f64,

    #[unity_field("endTime")]
    pub end_time: f64,

    #[unity_field("isLoop")]
    pub is_loop: bool,
}

fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("🎮 VR Horror - PlaySFX Component Finder");
    println!("{}", "=".repeat(70));
    println!();

    let project_path = Path::new("test_data/VR_Horror_YouCantRun");

    // Check if project exists
    if !project_path.exists() {
        eprintln!("❌ Error: VR_Horror_YouCantRun project not found at {}", project_path.display());
        eprintln!("   Run the integration tests first to download it:");
        eprintln!("   cargo test test_vr_horror_project");
        return Ok(());
    }

    println!("📁 Scanning project: {}", project_path.display());
    println!();

    // Find all Unity scene files
    let scene_files = find_unity_files(project_path, "unity");

    println!("📄 Found {} scene file(s)", scene_files.len());
    println!();

    let mut total_playsfx = 0;

    // Parse each scene
    for scene_path in scene_files {
        println!("🔍 Parsing: {}", scene_path.file_name().unwrap().to_string_lossy());

        match UnityFile::from_path(&scene_path) {
            Ok(UnityFile::Scene(scene)) => {
                // Get views for all component types we need
                let playsfx_view = scene.world.borrow::<PlaySFX>();
                let transform_view = scene.world.borrow::<unity_parser::Transform>();
                let rect_transform_view = scene.world.borrow::<unity_parser::RectTransform>();
                let gameobject_view = scene.world.borrow::<unity_parser::GameObject>();

                // Find all entities that have PlaySFX
                let mut found_count = 0;
                let mut found_entities = Vec::new();

                // Iterate through all entities in the entity_map
                for entity in scene.entity_map.values() {
                    if let Some(playsfx) = playsfx_view.get(*entity) {
                        found_entities.push((*entity, playsfx.clone()));
                        found_count += 1;
                    }
                }

                if found_count > 0 {
                    println!("  ✅ Found {} PlaySFX component(s)", found_count);
                    total_playsfx += found_count;

                    // Process each found PlaySFX component
                    for (entity, playsfx) in found_entities {
                        let transform = transform_view.get(entity);
                        let rect_transform = rect_transform_view.get(entity);
                        let game_object = gameobject_view.get(entity);

                        let name = game_object
                            .and_then(|go| go.name())
                            .unwrap_or("(unnamed)");

                        println!();
                        println!("    🔊 PlaySFX on GameObject: \"{}\"", name);
                        println!("       Entity: {:?}", entity);
                        println!("       Properties:");
                        println!("         • volume: {}", playsfx.volume);
                        println!("         • startTime: {}", playsfx.start_time);
                        println!("         • endTime: {}", playsfx.end_time);
                        println!("         • isLoop: {}", playsfx.is_loop);

                        // Print position if available
                        if let Some(transform) = transform {
                            if let Some(pos) = transform.local_position() {
                                println!("       Transform:");
                                println!("         • Position: ({:.2}, {:.2}, {:.2})",
                                    pos.x, pos.y, pos.z);
                            }
                            if let Some(rot) = transform.local_rotation() {
                                println!("         • Rotation: ({:.2}, {:.2}, {:.2}, {:.2})",
                                    rot.x, rot.y, rot.z, rot.w);
                            }
                            if let Some(scale) = transform.local_scale() {
                                println!("         • Scale: ({:.2}, {:.2}, {:.2})",
                                    scale.x, scale.y, scale.z);
                            }
                        } else if let Some(rect_transform) = rect_transform {
                            let transform = rect_transform.transform();
                            if let Some(pos) = transform.local_position() {
                                println!("       RectTransform (UI):");
                                println!("         • Position: ({:.2}, {:.2}, {:.2})",
                                    pos.x, pos.y, pos.z);
                            }
                        } else {
                            println!("       ⚠️  No Transform found");
                        }
                    }
                } else {
                    println!("  ⊘ No PlaySFX components found");
                }

                println!();
            }
            Ok(_) => {
                println!("  ⊘ Skipped (not a scene file)");
                println!();
            }
            Err(e) => {
                println!("  ❌ Parse error: {}", e);
                println!();
            }
        }
    }

    println!("{}", "=".repeat(70));
    println!("📊 Summary:");
    println!("   Total PlaySFX components found: {}", total_playsfx);
    println!("{}", "=".repeat(70));

    Ok(())
}

/// Find all Unity files with a specific extension in a directory
fn find_unity_files(dir: &Path, extension: &str) -> Vec<std::path::PathBuf> {
    let mut files = Vec::new();

    fn visit_dir(dir: &Path, extension: &str, files: &mut Vec<std::path::PathBuf>) {
        if let Ok(entries) = std::fs::read_dir(dir) {
            for entry in entries.flatten() {
                let path = entry.path();

                // Skip Library, Temp, Builds, and .git directories
                if let Some(name) = path.file_name().and_then(|n| n.to_str()) {
                    if name == "Library" || name == "Temp" || name == "Builds" || name == ".git" {
                        continue;
                    }
                }

                if path.is_dir() {
                    visit_dir(&path, extension, files);
                } else if let Some(ext) = path.extension().and_then(|e| e.to_str()) {
                    if ext == extension {
                        files.push(path);
                    }
                }
            }
        }
    }

    visit_dir(dir, extension, &mut files);
    files.sort();
    files
}