//
use actix::prelude::*;

use crate::{
    alerts::messages::NotifyUser,
    server::{actor::messages::RepoUpdate, ServerActor},
};
use derive_more::Deref;
use kxio::network::Network;
use std::time::Duration;
use tracing::{info, instrument, warn, Instrument};

use git_next_core::{
    git::{
        self,
        repository::{factory::RepositoryFactory, open::OpenRepositoryLike},
        UserNotification,
    },
    server::ListenUrl,
    WebhookAuth, WebhookId,
};

mod branch;
pub mod handlers;
mod load;
pub mod messages;
mod notifications;

#[cfg(test)]
pub mod tests;

#[derive(Clone, Debug, Default)]
pub struct ActorLog(std::sync::Arc<std::sync::RwLock<Vec<String>>>);
impl Deref for ActorLog {
    type Target = std::sync::Arc<std::sync::RwLock<Vec<String>>>;

    fn deref(&self) -> &Self::Target {
        &self.0
    }
}

/// An actor that represents a Git Repository.
///
/// When this actor is started it is sent the `CloneRepo` message.
#[allow(clippy::module_name_repetitions)]
#[derive(Debug, derive_more::Display, derive_with::With)]
#[display("{}:{}:{}", generation, repo_details.forge.forge_alias(), repo_details.repo_alias)]
pub struct RepoActor {
    sleep_duration: std::time::Duration,
    generation: git::Generation,
    message_token: messages::MessageToken,
    repo_details: git::RepoDetails,
    listen_url: ListenUrl,
    webhook_id: Option<WebhookId>, // INFO: if [None] then no webhook is configured
    webhook_auth: Option<WebhookAuth>, // INFO: if [None] then no webhook is configured
    last_main_commit: Option<git::Commit>,
    last_next_commit: Option<git::Commit>,
    last_dev_commit: Option<git::Commit>,
    repository_factory: Box<dyn RepositoryFactory>,
    open_repository: Option<Box<dyn OpenRepositoryLike>>,
    net: Network,
    forge: Box<dyn git::ForgeLike>,
    log: Option<ActorLog>,
    notify_user_recipient: Option<Recipient<NotifyUser>>,
    server_addr: Option<Addr<ServerActor>>,
}
impl RepoActor {
    #[allow(clippy::too_many_arguments)]
    pub fn new(
        repo_details: git::RepoDetails,
        forge: Box<dyn git::ForgeLike>,
        listen_url: ListenUrl,
        generation: git::Generation,
        net: Network,
        repository_factory: Box<dyn RepositoryFactory>,
        sleep_duration: std::time::Duration,
        notify_user_recipient: Option<Recipient<NotifyUser>>,
        server_addr: Option<Addr<ServerActor>>,
    ) -> Self {
        let message_token = messages::MessageToken::default();
        Self {
            generation,
            message_token,
            repo_details,
            listen_url,
            webhook_id: None,
            webhook_auth: None,
            last_main_commit: None,
            last_next_commit: None,
            last_dev_commit: None,
            repository_factory,
            open_repository: None,
            forge,
            net,
            sleep_duration,
            log: None,
            notify_user_recipient,
            server_addr,
        }
    }

    fn update_tui_branches(&self) {
        #[cfg(feature = "tui")]
        {
            use crate::server::actor::messages::RepoUpdate;
            let Some(repo_config) = &self.repo_details.repo_config else {
                return;
            };
            let branches = repo_config.branches().clone();
            self.update_tui(RepoUpdate::Branches { branches });
        }
    }

    #[allow(unused_variables)]
    fn update_tui_log(&self, log: git::graph::Log) {
        #[cfg(feature = "tui")]
        {
            self.update_tui(RepoUpdate::Log { log });
        }
    }

    #[allow(unused_variables)]
    fn alert_tui(&self, alert: impl Into<String>) {
        #[cfg(feature = "tui")]
        {
            self.update_tui(RepoUpdate::Alert {
                alert: alert.into(),
            });
        }
    }

    #[allow(unused_variables)]
    fn update_tui(&self, repo_update: RepoUpdate) {
        #[cfg(feature = "tui")]
        {
            let Some(server_addr) = &self.server_addr else {
                return;
            };

            let update = crate::server::actor::messages::ServerUpdate::RepoUpdate {
                forge_alias: self.repo_details.forge.forge_alias().clone(),
                repo_alias: self.repo_details.repo_alias.clone(),
                repo_update,
            };
            server_addr.do_send(update);
        }
    }
}
impl Actor for RepoActor {
    type Context = Context<Self>;
    #[instrument(name = "RepoActor::stopping", skip_all, fields(repo = %self.repo_details))]
    fn stopping(&mut self, ctx: &mut Self::Context) -> Running {
        tracing::debug!("stopping");
        info!("Checking webhook");
        match self.webhook_id.take() {
            Some(webhook_id) => {
                tracing::warn!("stopping - unregistering webhook");
                info!(%webhook_id, "Unregistring webhook");
                let forge = self.forge.duplicate();
                async move {
                    if let Err(err) = forge.unregister_webhook(&webhook_id).await {
                        warn!("unregistering webhook: {err}");
                    }
                }
                .in_current_span()
                .into_actor(self)
                .wait(ctx);
                Running::Continue
            }
            None => Running::Stop,
        }
    }
}

pub fn delay_send<M>(addr: &Addr<RepoActor>, delay: Duration, msg: M, log: Option<&ActorLog>)
where
    M: actix::Message + Send + 'static + std::fmt::Debug,
    RepoActor: actix::Handler<M>,
    <M as actix::Message>::Result: Send,
{
    let log_message = format!("send-after-delay: {msg:?}");
    tracing::debug!(log_message);
    logger(log, log_message);
    std::thread::sleep(delay);
    do_send(addr, msg, log);
}

pub fn do_send<M>(addr: &Addr<RepoActor>, msg: M, log: Option<&ActorLog>)
where
    M: actix::Message + Send + 'static + std::fmt::Debug,
    RepoActor: actix::Handler<M>,
    <M as actix::Message>::Result: Send,
{
    let log_message = format!("send: {msg:?}");
    tracing::debug!(log_message);
    logger(log, log_message);
    if cfg!(not(test)) {
        // #[cfg(not(test))]
        addr.do_send(msg);
    }
}

pub fn logger(log: Option<&ActorLog>, message: impl Into<String>) {
    if let Some(log) = log {
        let message: String = message.into();
        tracing::debug!(message);
        let _ = log.write().map(|mut l| l.push(message));
    }
}
pub fn notify_user(
    recipient: Option<&Recipient<NotifyUser>>,
    user_notification: UserNotification,
    log: Option<&ActorLog>,
) {
    let msg = NotifyUser::from(user_notification);
    let log_message = format!("send: {msg:?}");
    tracing::debug!(log_message);
    logger(log, log_message);
    if let Some(recipient) = &recipient {
        recipient.do_send(msg);
    }
}