use indicatif::{MultiProgress, ProgressBar};
use indicatif_log_bridge::LogWrapper;
use log::error;
use std::{
    collections::HashMap,
    sync::{Arc, Mutex},
};

use crate::instrumentation::{self, HarmonyComposerEvent};

pub fn init() -> tokio::task::JoinHandle<()> {
    configure_logger();
    let handle = tokio::spawn(handle_events());

    loop {
        if instrumentation::instrument(HarmonyComposerEvent::HarmonyComposerStarted).is_ok() {
            break;
        }
    }

    handle
}

fn configure_logger() {
    let logger =
        env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).build();
    let level = logger.filter();
    let multi = MultiProgress::new();
    LogWrapper::new(multi.clone(), logger).try_init().unwrap();
    log::set_max_level(level);
}

pub async fn handle_events() {
    const PROGRESS_SETUP: &str = "project-initialization";
    const PROGRESS_DEPLOYMENT: &str = "deployment";

    instrumentation::subscribe("Harmony Composer Logger", {
        let progresses: Arc<Mutex<HashMap<String, MultiProgress>>> =
            Arc::new(Mutex::new(HashMap::new()));
        let compilation_progress = Arc::new(Mutex::new(None::<ProgressBar>));

        move |event| {
            let progresses_clone = Arc::clone(&progresses);
            let compilation_progress_clone = Arc::clone(&compilation_progress);

            async move {
                let mut progresses_guard = progresses_clone.lock().unwrap();
                let mut compilation_progress_guard = compilation_progress_clone.lock().unwrap();

                match event {
                    HarmonyComposerEvent::HarmonyComposerStarted => {}
                    HarmonyComposerEvent::ProjectInitializationStarted => {
                        let multi_progress = harmony_cli::progress::new_section(format!(
                            "{} Initializing Harmony project...",
                            harmony_cli::theme::EMOJI_HARMONY,
                        ));
                        (*progresses_guard).insert(PROGRESS_SETUP.to_string(), multi_progress);
                    }
                    HarmonyComposerEvent::ProjectInitialized => println!("\n"),
                    HarmonyComposerEvent::ProjectCompilationStarted { details } => {
                        let initialization_progress =
                            (*progresses_guard).get(PROGRESS_SETUP).unwrap();
                        let _ = initialization_progress.clear();

                        let progress =
                            harmony_cli::progress::add_spinner(initialization_progress, details);
                        *compilation_progress_guard = Some(progress);
                    }
                    HarmonyComposerEvent::ProjectCompiled => {
                        let initialization_progress =
                            (*progresses_guard).get(PROGRESS_SETUP).unwrap();

                        harmony_cli::progress::success(
                            initialization_progress,
                            (*compilation_progress_guard).take(),
                            "project compiled".to_string(),
                        );
                    }
                    HarmonyComposerEvent::ProjectCompilationFailed { details } => {
                        let initialization_progress =
                            (*progresses_guard).get(PROGRESS_SETUP).unwrap();

                        harmony_cli::progress::error(
                            initialization_progress,
                            (*compilation_progress_guard).take(),
                            "failed to compile project".to_string(),
                        );

                        error!("{details}");
                    }
                    HarmonyComposerEvent::DeploymentStarted { target } => {
                        let multi_progress = harmony_cli::progress::new_section(format!(
                            "{} Starting deployment to {target}...\n\n",
                            harmony_cli::theme::EMOJI_DEPLOY
                        ));
                        (*progresses_guard).insert(PROGRESS_DEPLOYMENT.to_string(), multi_progress);
                    }
                    HarmonyComposerEvent::DeploymentCompleted { details } => println!("\n"),
                    HarmonyComposerEvent::Shutdown => {
                        for (_, progresses) in (*progresses_guard).iter() {
                            progresses.clear().unwrap();
                        }

                        return false;
                    }
                }
                true
            }
        }
    })
    .await
}