//! Command handlers for Momentry Core CLI
//!
//! This module contains the actual implementation of CLI command handlers.

use anyhow::Result;
use std::path::Path;

/// Handle video registration command
pub async fn handle_register(path: &str) -> Result<()> {
    println!("Registering video: {}", path);

    // TODO: Implement proper video registration
    println!("(Video registration would happen here)");

    // Simple UUID simulation
    use std::collections::hash_map::DefaultHasher;
    use std::hash::{Hash, Hasher};
    let mut hasher = DefaultHasher::new();
    path.hash(&mut hasher);
    let hash = hasher.finish();
    let uuid = format!("{:016x}", hash);
    println!("UUID that would be generated: {}", uuid);

    Ok(())
}

/// Handle video processing command
pub async fn handle_process(
    target: &str,
    modules: Option<Vec<String>>,
    cloud: bool,
    force: bool,
    resume: bool,
) -> Result<()> {
    println!("Processing target: {}", target);
    println!("Modules: {:?}", modules);
    println!("Cloud processing: {}", cloud);
    println!("Force reprocess: {}", force);
    println!("Resume: {}", resume);

    // Determine if target is a UUID or a path
    let is_uuid = target.len() == 16 && target.chars().all(|c| c.is_ascii_hexdigit());

    if is_uuid {
        println!("Target is a UUID, would process video: {}", target);
        // TODO: Implement UUID-based processing
    } else {
        let path = Path::new(target);
        if !path.exists() {
            anyhow::bail!("Path does not exist: {}", target);
        }

        // For now, just show decision
        if force {
            println!("Force reprocessing: {}", target);
        } else if resume {
            println!("Resume processing: {}", target);
        } else {
            println!("Normal processing: {}", target);
        }
    }

    Ok(())
}

/// Handle video chunking command
pub async fn handle_chunk(uuid: &str) -> Result<()> {
    println!("Chunking video with UUID: {}", uuid);

    // TODO: Connect to database and fetch video
    println!(
        "Would connect to database and fetch video with UUID: {}",
        uuid
    );

    println!("(Would show video details)");

    // TODO: Implement chunking logic

    Ok(())
}

/// Handle story generation command
pub async fn handle_story(uuid: &str) -> Result<()> {
    println!("Generating story for video with UUID: {}", uuid);

    // TODO: Connect to database and fetch video
    println!(
        "Would connect to database and fetch video with UUID: {}",
        uuid
    );

    println!("(Would show video details)");
    println!("Generating story...");

    // TODO: Implement story generation logic

    Ok(())
}

/// Handle vectorization command
pub async fn handle_vectorize(uuid: &str) -> Result<()> {
    println!("Vectorizing video with UUID: {}", uuid);

    // TODO: Connect to database and fetch video
    println!(
        "Would connect to database and fetch video with UUID: {}",
        uuid
    );

    println!("(Would show video details)");
    println!("Starting vectorization...");

    // TODO: Implement vectorization logic

    Ok(())
}

/// Handle video playback command
pub async fn handle_play(target: &str) -> Result<()> {
    println!("Playing target: {}", target);

    // TODO: Implement video playback logic

    println!("(Video playback would start here)");

    Ok(())
}

/// Handle file system watching command
pub async fn handle_watch(directories: Vec<String>) -> Result<()> {
    println!("Watching directories for new videos:");
    for dir in &directories {
        println!("  - {}", dir);
    }

    // TODO: Implement directory watching logic

    println!("(Directory watcher would start here)");

    Ok(())
}

/// Handle system information command
pub async fn handle_system(gpu: bool) -> Result<()> {
    println!("System Information:");

    // TODO: Implement system information gathering

    if gpu {
        println!("GPU information requested");
        // TODO: Add GPU-specific info
    }

    Ok(())
}

/// Handle server startup command
pub async fn handle_server(host: &str, port: u16) -> Result<()> {
    println!("Starting API server on {}:{}", host, port);

    // This is handled by the server binary directly
    println!("(Server is started through binary entry point)");

    Ok(())
}

/// Handle worker startup command
pub async fn handle_worker(
    max_concurrent: Option<u32>,
    poll_interval: Option<u64>,
    batch_size: Option<u32>,
) -> Result<()> {
    println!("Starting worker with configuration:");
    println!("  Max concurrent jobs: {}", max_concurrent.unwrap_or(2));
    println!("  Poll interval: {} seconds", poll_interval.unwrap_or(5));
    println!("  Batch size: {}", batch_size.unwrap_or(10));

    // TODO: Implement worker startup logic

    Ok(())
}

/// Handle search query command
pub async fn handle_query(query: &str) -> Result<()> {
    println!("Searching for: {}", query);

    // TODO: Connect to database and search
    println!("Would search for: {}", query);
    let results: Vec<String> = vec![]; // Placeholder

    println!("(Search would return results here)");

    Ok(())
}

/// Handle file lookup command
pub async fn handle_lookup(path: &str) -> Result<()> {
    println!("Looking up file: {}", path);

    // TODO: Connect to database and lookup file
    println!("Looking up file in database: {}", path);
    let video: Option<String> = None; // Placeholder

    if let Some(_) = video {
        println!("File found in database: {}", path);
        // In real implementation, show video details
    } else {
        println!("File not found in database: {}", path);
        println!("(UUID would be generated for new files)");
    }

    Ok(())
}

/// Handle UUID resolution command
pub async fn handle_resolve(uuid: &str) -> Result<()> {
    println!("Resolving UUID: {}", uuid);

    // TODO: Connect to database and fetch video
    println!(
        "Would connect to database and fetch video with UUID: {}",
        uuid
    );

    println!("Resolved to:");
    println!("  File name: (would show from database)");
    println!("  File path: (would show from database)");
    println!("  Duration: (would show from database)");
    println!("  Resolution: (would show from database)");

    Ok(())
}

/// Handle thumbnail extraction command
pub async fn handle_thumbnails(uuid: Option<String>, count: Option<u32>) -> Result<()> {
    let count = count.unwrap_or(5);

    if let Some(uuid) = uuid {
        println!("Extracting {} thumbnails for video UUID: {}", count, uuid);

        // TODO: Connect to database and fetch video
        println!("Would fetch video with UUID: {}", uuid);

        println!("(Would show video details)");

        // TODO: Implement thumbnail extraction
    } else {
        println!("Extracting {} thumbnails from all pending videos", count);

        // TODO: Implement bulk thumbnail extraction
    }

    Ok(())
}

/// Handle video status check command
pub async fn handle_status(uuid: Option<String>) -> Result<()> {
    // TODO: Connect to database
    println!("Would connect to database to check status");

    if let Some(uuid) = uuid {
        println!("Checking status for video UUID: {}", uuid);

        // Would fetch video from database
        println!("Would fetch video with UUID: {}", uuid);

        println!("Video Status:");
        println!("  UUID: {}", uuid);
        println!("  File name: (would show from database)");
        println!("  Status: (would show from database)");
        println!("  Processing status: (would show from database)");
        println!("  Created at: (would show from database)");
        println!("  Registration time: (would show from database)");

        // TODO: Add more detailed processing status
    } else {
        println!("Checking status of all videos");

        println!("(Would list videos from database)");
    }

    Ok(())
}

/// Handle backup operations command
pub async fn handle_backup(action: &str, days: Option<u32>) -> Result<()> {
    match action {
        "create" => {
            println!("Creating backup...");
            // TODO: Implement backup creation
        }
        "list" => {
            println!("Listing backups...");
            // TODO: Implement backup listing
        }
        "restore" => {
            println!("Restoring from backup...");
            // TODO: Implement backup restoration
        }
        "clean" | "cleanup" => {
            let days = days.unwrap_or(30);
            println!("Cleaning backups older than {} days...", days);
            // TODO: Implement backup cleanup
        }
        _ => {
            println!("Unknown backup action: {}", action);
            println!("Available actions: create, list, restore, clean(up)");
        }
    }

    Ok(())
}

/// Handle API key management command
pub async fn handle_api_key(
    action: &crate::cli::args::ApiKeyAction,
    name: Option<String>,
    key_type: Option<String>,
    ttl: Option<u64>,
    key: Option<String>,
    key_id: Option<String>,
) -> Result<()> {
    println!("API Key Management:");
    println!("  Action: {:?}", action);

    // TODO: Implement proper API key management
    match action {
        crate::cli::args::ApiKeyAction::Create => {
            let name = name.unwrap_or_else(|| "default".to_string());
            println!("Would create API key with name: {}", name);
            println!("(API key creation would be implemented here)");
        }
        crate::cli::args::ApiKeyAction::List => {
            println!("Would list API keys");
            println!("(API key listing would be implemented here)");
        }
        crate::cli::args::ApiKeyAction::Validate => {
            let key = key.expect("API key required for validation");
            println!("Would validate API key: {}...", &key[..8]);
            println!("(API key validation would be implemented here)");
        }
        crate::cli::args::ApiKeyAction::Revoke => {
            let key_id = key_id.expect("Key ID required for revocation");
            println!("Would revoke API key with ID: {}", key_id);
            println!("(API key revocation would be implemented here)");
        }
        crate::cli::args::ApiKeyAction::Rotate => {
            let key_id = key_id.expect("Key ID required for rotation");
            println!("Would rotate API key with ID: {}", key_id);
            println!("(API key rotation would be implemented here)");
        }
        crate::cli::args::ApiKeyAction::Stats => {
            println!("Would show API key statistics");
            println!("(API key statistics would be implemented here)");
        }
    }

    Ok(())
}

/// Handle Gitea integration command
pub async fn handle_gitea(
    action: &crate::cli::args::GiteaAction,
    name: Option<String>,
    url: Option<String>,
    token: Option<String>,
    repo_id: Option<String>,
) -> Result<()> {
    match action {
        crate::cli::args::GiteaAction::Create => {
            println!("Creating Gitea integration...");
            // TODO: Implement Gitea integration creation
        }
        crate::cli::args::GiteaAction::List => {
            println!("Listing Gitea integrations...");
            // TODO: Implement Gitea integration listing
        }
        crate::cli::args::GiteaAction::Delete => {
            let repo_id = repo_id.expect("Repository ID required for deletion");
            println!("Deleting Gitea integration: {}", repo_id);
            // TODO: Implement Gitea integration deletion
        }
        crate::cli::args::GiteaAction::Verify => {
            println!("Verifying Gitea integration...");
            // TODO: Implement Gitea integration verification
        }
    }

    Ok(())
}

/// Handle n8n workflow command
pub async fn handle_n8n(
    action: &crate::cli::args::N8nAction,
    name: Option<String>,
    url: Option<String>,
    workflow_id: Option<String>,
) -> Result<()> {
    match action {
        crate::cli::args::N8nAction::Create => {
            println!("Creating n8n workflow...");
            // TODO: Implement n8n workflow creation
        }
        crate::cli::args::N8nAction::List => {
            println!("Listing n8n workflows...");
            // TODO: Implement n8n workflow listing
        }
        crate::cli::args::N8nAction::Delete => {
            let workflow_id = workflow_id.expect("Workflow ID required for deletion");
            println!("Deleting n8n workflow: {}", workflow_id);
            // TODO: Implement n8n workflow deletion
        }
        crate::cli::args::N8nAction::Verify => {
            println!("Verifying n8n workflow...");
            // TODO: Implement n8n workflow verification
        }
    }

    Ok(())
}
