//! ComfyUI SDK Examples
//!
//! This example demonstrates how to use the ComfyUI SDK for Rust

use std::collections::HashMap;
use std::sync::Arc;
use comfyui_sdk::{
    ComfyUIClient, ComfyUIClientConfig, ExecutionOptions,
    AI_MODEL_FACE_HAIR_FIX_TEMPLATE
};
use comfyui_sdk::utils::SimpleCallbacks;
use serde_json::json;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Initialize logging (optional)
    // env_logger::init();

    println!("🚀 Starting ComfyUI SDK Rust Examples");

    // Run the AI model face hair fix example
    ai_model_face_hair_fix_example().await?;

    // Run template validation example
    template_validation_example().await?;

    println!("✅ All examples completed successfully!");
    Ok(())
}

/// AI Model Face & Hair Detail Fix Example
async fn ai_model_face_hair_fix_example() -> Result<(), Box<dyn std::error::Error>> {
    println!("\n🎨 AI Model Face & Hair Detail Fix Example");
    println!("===========================================");

    // Initialize client
    let mut client = ComfyUIClient::new(ComfyUIClientConfig {
        base_url: "http://192.168.0.193:8188".to_string(),
        ..Default::default()
    })?;

    // Connect to ComfyUI server
    println!("📡 Connecting to ComfyUI server...");
    client.connect().await?;
    println!("✅ Connected successfully!");

    // Register the built-in template
    println!("📝 Registering AI Model Face & Hair Fix template...");
    client.templates().register_from_data(AI_MODEL_FACE_HAIR_FIX_TEMPLATE.clone())?;
    println!("✅ Template registered!");

    // Get the registered template
    let template = client.templates_ref()
        .get_by_id(&AI_MODEL_FACE_HAIR_FIX_TEMPLATE.metadata.id)
        .ok_or("Failed to get template")?;

    println!("📋 Template ID: {}", template.id());
    println!("📋 Template Name: {}", template.name());
    if let Some(description) = template.description() {
        println!("📋 Template Description: {}", description);
    }

    // Display template parameters
    println!("\n🔍 Template Parameters:");
    for (name, schema) in template.parameters() {
        println!("  - {}: {:?} ({})", 
            name, 
            schema.param_type, 
            schema.description.as_deref().unwrap_or("No description")
        );
    }

    // Create execution callbacks
    let callbacks = Arc::new(
        SimpleCallbacks::new()
            .with_progress(|progress| {
                let percentage = (progress.progress as f64 / progress.max as f64 * 100.0) as u32;
                println!("⏳ Progress: {}% ({}/{}) - Node: {}", 
                    percentage, progress.progress, progress.max, progress.node_id);
            })
            .with_executing(|node_id| {
                println!("🔄 Executing node: {}", node_id);
            })
            .with_executed(|result| {
                println!("✅ Node executed - Prompt ID: {}", result.prompt_id);
            })
            .with_error(|error| {
                println!("❌ Execution error: {}", error.message);
            })
    );

    // Execute the template with test parameters
    println!("\n🎨 Executing AI Model Face & Hair Enhancement...");
    let mut parameters = HashMap::new();
    parameters.insert("input_image".to_string(), json!("20250806-190606.jpg"));
    parameters.insert("face_prompt".to_string(), json!("beautiful woman, perfect skin, detailed facial features"));
    parameters.insert("face_denoise".to_string(), json!("0.25"));

    let execution_options = ExecutionOptions {
        timeout: Some(std::time::Duration::from_secs(120)), // 2 minutes timeout
        priority: None,
    };

    let result = client.execute_template_with_callbacks(
        template,
        parameters,
        execution_options,
        callbacks,
    ).await?;

    if result.success {
        println!("\n🎉 AI Model Enhancement completed successfully!");
        println!("📊 Execution time: {}ms", result.execution_time);
        println!("🆔 Prompt ID: {}", result.prompt_id);
        
        if let Some(outputs) = &result.outputs {
            println!("📁 Outputs: {}", serde_json::to_string_pretty(outputs)?);
            
            // Convert outputs to HTTP URLs
            let image_urls = client.outputs_to_urls(outputs);
            if !image_urls.is_empty() {
                println!("🖼️  Enhanced Image URLs:");
                for url in image_urls {
                    println!("   - {}", url);
                }
            }
        }
    } else {
        println!("❌ AI Model Enhancement failed");
        if let Some(error) = &result.error {
            println!("   Error: {}", error.message);
        }
    }

    // Disconnect
    println!("\n🔌 Disconnecting...");
    client.disconnect().await?;
    println!("👋 Disconnected!");

    Ok(())
}

/// Template validation example
async fn template_validation_example() -> Result<(), Box<dyn std::error::Error>> {
    println!("\n🔍 Template Validation Example");
    println!("==============================");

    let mut client = ComfyUIClient::new(ComfyUIClientConfig {
        base_url: "http://192.168.0.193:8188".to_string(),
        ..Default::default()
    })?;

    // Register template
    client.templates().register_from_data(AI_MODEL_FACE_HAIR_FIX_TEMPLATE.clone())?;
    let template = client.templates_ref()
        .get_by_id(&AI_MODEL_FACE_HAIR_FIX_TEMPLATE.metadata.id)
        .ok_or("Failed to get template")?;

    println!("📝 Testing parameter validation...");

    // Test valid parameters
    let mut valid_params = HashMap::new();
    valid_params.insert("input_image".to_string(), json!("test.jpg"));
    valid_params.insert("face_prompt".to_string(), json!("beautiful face"));
    valid_params.insert("face_denoise".to_string(), json!("0.3"));

    let validation_result = template.validate(&valid_params);
    println!("✅ Valid parameters test: {}", 
        if validation_result.valid { "PASSED" } else { "FAILED" });

    if !validation_result.valid {
        println!("❌ Validation errors:");
        for error in &validation_result.errors {
            println!("   - {}: {}", error.path, error.message);
        }
    }

    // Test invalid parameters
    let mut invalid_params = HashMap::new();
    invalid_params.insert("input_image".to_string(), json!("")); // Empty required field
    invalid_params.insert("face_prompt".to_string(), json!("test"));
    invalid_params.insert("unknown_param".to_string(), json!("value")); // Unknown parameter

    let invalid_validation = template.validate(&invalid_params);
    println!("🚫 Invalid parameters test: {}", 
        if !invalid_validation.valid { "PASSED" } else { "FAILED" });

    if !invalid_validation.valid {
        println!("📋 Expected validation errors:");
        for error in &invalid_validation.errors {
            println!("   - {}: {}", error.path, error.message);
        }
    }

    // Test template instance creation
    println!("\n🏗️  Testing template instance creation...");
    match template.create_instance(valid_params) {
        Ok(instance) => {
            println!("✅ Template instance created successfully");
            println!("   Template ID: {}", instance.template_id());
            println!("   Template Name: {}", instance.template_name());
            println!("   Node count: {}", instance.node_count());
        }
        Err(e) => {
            println!("❌ Failed to create template instance: {}", e);
        }
    }

    // Test template manager features
    println!("\n📚 Testing template manager features...");
    let templates = client.templates_ref();
    println!("   Total templates: {}", templates.count());
    println!("   Template IDs: {:?}", templates.list_ids());
    
    let categories = templates.get_categories();
    if !categories.is_empty() {
        println!("   Categories: {:?}", categories);
    }
    
    let tags = templates.get_tags();
    if !tags.is_empty() {
        println!("   Tags: {:?}", tags);
    }

    Ok(())
}

/// Basic usage example (simpler version)
#[allow(dead_code)]
async fn basic_usage_example() -> Result<(), Box<dyn std::error::Error>> {
    println!("\n📖 Basic Usage Example");
    println!("======================");

    // Create client
    let mut client = ComfyUIClient::new(ComfyUIClientConfig {
        base_url: "http://localhost:8188".to_string(),
        ..Default::default()
    })?;

    // Connect
    client.connect().await?;
    println!("✅ Connected to ComfyUI!");

    // Get system stats
    match client.get_system_stats().await {
        Ok(stats) => {
            println!("💻 System Info:");
            println!("   OS: {}", stats.system.os);
            println!("   Python: {}", stats.system.python_version);
            println!("   Devices: {}", stats.devices.len());
        }
        Err(e) => {
            println!("❌ Failed to get system stats: {}", e);
        }
    }

    // Get queue status
    match client.get_queue_status().await {
        Ok(queue) => {
            println!("📋 Queue Status:");
            println!("   Running: {}", queue.queue_running.len());
            println!("   Pending: {}", queue.queue_pending.len());
        }
        Err(e) => {
            println!("❌ Failed to get queue status: {}", e);
        }
    }

    client.disconnect().await?;
    Ok(())
}