use serde_json::{json, Value};

use crate::sidecar::messages::IPCMessage;
use crate::sidecar::sidecar;

/// Send a chat message to the AI provider via the Python sidecar.
#[tauri::command]
pub fn ai_chat(
    messages: Value,
    transcript_context: Option<String>,
    provider: Option<String>,
) -> Result<Value, String> {
    let manager = sidecar();
    manager.ensure_running()?;

    // If a specific provider is requested, set it first
    if let Some(p) = provider {
        let set_msg = IPCMessage::new(
            &uuid::Uuid::new_v4().to_string(),
            "ai.chat",
            json!({ "action": "set_provider", "provider": p }),
        );
        let _ = manager.send_and_receive(&set_msg)?;
    }

    let request_id = uuid::Uuid::new_v4().to_string();
    let msg = IPCMessage::new(
        &request_id,
        "ai.chat",
        json!({
            "action": "chat",
            "messages": messages,
            "transcript_context": transcript_context.unwrap_or_default(),
        }),
    );

    let response = manager.send_and_receive(&msg)?;

    if response.msg_type == "error" {
        return Err(format!(
            "AI error: {}",
            response
                .payload
                .get("message")
                .and_then(|v| v.as_str())
                .unwrap_or("unknown")
        ));
    }

    Ok(response.payload)
}

/// List available AI providers.
#[tauri::command]
pub fn ai_list_providers() -> Result<Value, String> {
    let manager = sidecar();
    manager.ensure_running()?;

    let request_id = uuid::Uuid::new_v4().to_string();
    let msg = IPCMessage::new(
        &request_id,
        "ai.chat",
        json!({ "action": "list_providers" }),
    );

    let response = manager.send_and_receive(&msg)?;
    Ok(response.payload)
}

/// Configure an AI provider with API key/settings.
#[tauri::command]
pub fn ai_configure(provider: String, config: Value) -> Result<Value, String> {
    let manager = sidecar();
    manager.ensure_running()?;

    let request_id = uuid::Uuid::new_v4().to_string();
    let msg = IPCMessage::new(
        &request_id,
        "ai.chat",
        json!({
            "action": "configure",
            "provider": provider,
            "config": config,
        }),
    );

    let response = manager.send_and_receive(&msg)?;
    Ok(response.payload)
}