use room::ws_context::WsUserContext;
use uuid::Uuid;

use crate::error::AppTransportError;
use crate::event::{message, presence as pres, search as srch};
use crate::handler::session::TransportSession;
use crate::handler::types::WsOutEvent;

// ─── Notification ──────────────────────────────────────────────────────

pub(crate) async fn notification_mark_read(
    session: &TransportSession,
    id: Uuid,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    let ctx = WsUserContext::new(session.user.user_id);
    session
        .service
        .room
        .notification_mark_read(id, &ctx)
        .await
        .map_err(|e| {
            tracing::warn!(error = %e, "notification_mark_read failed");
            AppTransportError::Internal
        })?;
    Ok(None)
}

pub(crate) async fn notification_mark_all_read(
    session: &TransportSession,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    let ctx = WsUserContext::new(session.user.user_id);
    session
        .service
        .room
        .notification_mark_all_read(&ctx)
        .await
        .map_err(|e| {
            tracing::warn!(error = %e, "notification_mark_all_read failed");
            AppTransportError::Internal
        })?;
    Ok(None)
}

pub(crate) async fn notification_archive(
    session: &TransportSession,
    id: Uuid,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    let ctx = WsUserContext::new(session.user.user_id);
    session
        .service
        .room
        .notification_archive(id, &ctx)
        .await
        .map_err(|e| {
            tracing::warn!(error = %e, "notification_archive failed");
            AppTransportError::Internal
        })?;
    Ok(None)
}

// ─── Search ────────────────────────────────────────────────────────────

pub(crate) async fn search(
    session: &TransportSession,
    q: String,
    room: Option<models::RoomId>,
    start_time: Option<chrono::DateTime<chrono::Utc>>,
    end_time: Option<chrono::DateTime<chrono::Utc>>,
    sender_id: Option<Uuid>,
    content_type: Option<String>,
    limit: Option<u64>,
    offset: Option<u64>,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    let ctx = WsUserContext::new(session.user.user_id);
    let room_id = room.unwrap_or_default();
    let req = room::RoomMessageSearchRequest {
        q: q.clone(),
        start_time,
        end_time,
        sender_id,
        content_type,
        limit,
        offset,
    };
    let res = session
        .service
        .room
        .room_message_search(room_id, req, &ctx)
        .await
        .map_err(|e| {
            tracing::warn!(error = %e, "room_message_search failed");
            AppTransportError::Internal
        })?;

    let resp = srch::SearchResultService {
        q,
        room: room_id,
        took_ms: 0,
        messages: res
            .messages
            .into_iter()
            .map(|m| srch::SearchMessageHitService {
                highlighted_content: m.highlighted_content.unwrap_or_default(),
                message: message::MessageNewService {
                    id: m.id,
                    seq: m.seq,
                    room: m.room,
                    sender_type: m.sender_type,
                    sender_id: m.sender_id,
                    display_name: m.display_name,
                    thread: m.thread,
                    in_reply_to: m.in_reply_to,
                    content: m.content,
                    content_type: m.content_type,
                    thinking_content: m.thinking_content,
                    thinking_is_chunked: m.thinking_is_chunked,
                    send_at: m.send_at,
                    reactions: None,
                },
            })
            .collect(),
        total: res.total,
    };
    Ok(Some(WsOutEvent::SearchResult { data: resp }))
}

// ─── Presence ──────────────────────────────────────────────────────────

pub(crate) async fn presence_update(
    session: &TransportSession,
    status: pres::UserPresenceStatus,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    let project_id = session.get_current_project().await;

    let presence_status = match status {
        pres::UserPresenceStatus::Online => room::presence::PresenceStatus::Online,
        pres::UserPresenceStatus::Idle => room::presence::PresenceStatus::Idle,
        pres::UserPresenceStatus::Dnd => room::presence::PresenceStatus::Dnd,
        pres::UserPresenceStatus::Offline => room::presence::PresenceStatus::Offline,
    };

    let event = session
        .service
        .room
        .set_user_presence(session.user.user_id, project_id, presence_status)
        .await;

    if let Some(evt) = event {
        let transport_status = match evt.status {
            room::presence::PresenceStatus::Online => pres::UserPresenceStatus::Online,
            room::presence::PresenceStatus::Idle => pres::UserPresenceStatus::Idle,
            room::presence::PresenceStatus::Dnd => pres::UserPresenceStatus::Dnd,
            room::presence::PresenceStatus::Offline => pres::UserPresenceStatus::Offline,
        };
        Ok(Some(WsOutEvent::PresenceChanged {
            data: pres::PresenceChangedService {
                user: evt.user_id,
                project: evt.project_id,
                status: transport_status,
                last_seen_at: evt.last_seen_at,
            },
        }))
    } else {
        Ok(None)
    }
}

pub(crate) async fn custom_status_update(
    session: &TransportSession,
    emoji: Option<String>,
    text: Option<String>,
    expires_at: Option<chrono::DateTime<chrono::Utc>>,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    let evt = session.service.room.set_custom_status(
        session.user.user_id,
        emoji.clone(),
        text.clone(),
        expires_at,
    );

    if let Some(data) = evt {
        Ok(Some(WsOutEvent::CustomStatusUpdated {
            data: pres::CustomStatusUpdatedService {
                user: data.user_id,
                emoji: data.emoji,
                text: data.text,
                expires_at: data.expires_at,
            },
        }))
    } else {
        Ok(None)
    }
}

// ─── Invite (stubs) ────────────────────────────────────────────────────

pub(crate) async fn invite_create() -> Result<Option<WsOutEvent>, AppTransportError> {
    tracing::info!("Invite create");
    Ok(None)
}

pub(crate) async fn invite_accept() -> Result<Option<WsOutEvent>, AppTransportError> {
    tracing::info!("Invite accept");
    Ok(None)
}

pub(crate) async fn invite_revoke() -> Result<Option<WsOutEvent>, AppTransportError> {
    tracing::info!("Invite revoke");
    Ok(None)
}

// ─── Ban (stubs) ──────────────────────────────────────────────────────

pub(crate) async fn ban_create() -> Result<Option<WsOutEvent>, AppTransportError> {
    tracing::info!("Ban create");
    Ok(None)
}

pub(crate) async fn ban_remove() -> Result<Option<WsOutEvent>, AppTransportError> {
    tracing::info!("Ban remove");
    Ok(None)
}

// ─── Voice (stubs) ────────────────────────────────────────────────────

pub(crate) async fn voice_join(
    room: models::RoomId,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    tracing::info!(%room, "Voice join");
    Ok(None)
}

pub(crate) async fn voice_leave(
    room: models::RoomId,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    tracing::info!(%room, "Voice leave");
    Ok(None)
}

pub(crate) async fn voice_mute(
    room: models::RoomId,
    muted: bool,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    tracing::info!(%room, %muted, "Voice mute");
    Ok(None)
}

pub(crate) async fn voice_deaf(
    room: models::RoomId,
    deafened: bool,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    tracing::info!(%room, %deafened, "Voice deaf");
    Ok(None)
}

pub(crate) async fn screen_share(
    room: models::RoomId,
    start: bool,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    tracing::info!(%room, %start, "Screen share");
    Ok(None)
}

// ─── AI ────────────────────────────────────────────────────────────────

pub(crate) async fn ai_list(
    session: &TransportSession,
    room: models::RoomId,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    let ctx = WsUserContext::new(session.user.user_id);
    let ai_list = session
        .service
        .room
        .room_ai_list(room, &ctx)
        .await
        .map_err(|e| {
            tracing::warn!(error = %e, "room_ai_list failed");
            AppTransportError::Internal
        })?;
    let data = serde_json::to_value(ai_list).unwrap_or_default();
    Ok(Some(WsOutEvent::Response {
        request_id: Uuid::nil(),
        data,
    }))
}

pub(crate) async fn ai_upsert(
    session: &TransportSession,
    room: models::RoomId,
    model: Uuid,
    version: Option<Uuid>,
    system_prompt: Option<String>,
    temperature: Option<f64>,
    max_tokens: Option<i64>,
    stream: Option<bool>,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    let ctx = WsUserContext::new(session.user.user_id);
    let req = room::RoomAiUpsertRequest {
        model,
        version,
        system_prompt,
        temperature,
        max_tokens,
        stream,
        history_limit: None,
        use_exact: None,
        think: None,
        min_score: None,
        agent_type: None,
    };
    let ai_model = session
        .service
        .room
        .room_ai_upsert(room, req, &ctx)
        .await
        .map_err(|e| {
            tracing::warn!(error = %e, "room_ai_upsert failed");
            AppTransportError::Internal
        })?;
    let data = serde_json::to_value(ai_model).unwrap_or_default();
    Ok(Some(WsOutEvent::Response {
        request_id: Uuid::nil(),
        data,
    }))
}

pub(crate) async fn ai_delete(
    session: &TransportSession,
    room: models::RoomId,
    agent_id: Uuid,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    let ctx = WsUserContext::new(session.user.user_id);
    session
        .service
        .room
        .room_ai_delete(room, agent_id, &ctx)
        .await
        .map_err(|e| {
            tracing::warn!(error = %e, "room_ai_delete failed");
            AppTransportError::Internal
        })?;
    Ok(None)
}

pub(crate) async fn ai_stop(
    session: &TransportSession,
    room: models::RoomId,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    let ctx = WsUserContext::new(session.user.user_id);
    session
        .service
        .room
        .room_ai_stop(room, &ctx)
        .await
        .map_err(|e| {
            tracing::warn!(error = %e, "room_ai_stop failed");
            AppTransportError::Internal
        })?;
    Ok(None)
}

// ─── User ──────────────────────────────────────────────────────────────

pub(crate) async fn user_summary(
    session: &TransportSession,
    username: String,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    let ctx = session.to_session();
    let summary = session
        .service
        .user_get_summary(ctx, username)
        .await
        .map_err(|e| {
            tracing::warn!(error = %e, "user_get_summary failed");
            AppTransportError::Internal
        })?;
    let data = serde_json::to_value(summary).unwrap_or_default();
    Ok(Some(WsOutEvent::Response {
        request_id: Uuid::nil(),
        data,
    }))
}

// ─── State ─────────────────────────────────────────────────────────────

pub(crate) async fn state_set_read_seq(
    session: &TransportSession,
    room: models::RoomId,
    last_read_seq: i64,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    let ctx = WsUserContext::new(session.user.user_id);
    session
        .service
        .room
        .room_user_state_update_read_seq(room, last_read_seq, &ctx)
        .await
        .map_err(|e| {
            tracing::warn!(error = %e, "room_user_state_update_read_seq failed");
            AppTransportError::Internal
        })?;
    Ok(None)
}

pub(crate) async fn state_update_dnd(
    session: &TransportSession,
    room: models::RoomId,
    do_not_disturb: Option<bool>,
    dnd_start_hour: Option<i16>,
    dnd_end_hour: Option<i16>,
) -> Result<Option<WsOutEvent>, AppTransportError> {
    let ctx = WsUserContext::new(session.user.user_id);
    session
        .service
        .room
        .room_user_state_update_dnd(
            room,
            room::RoomUserStateUpdateDndRequest {
                do_not_disturb,
                dnd_start_hour,
                dnd_end_hour,
            },
            &ctx,
        )
        .await
        .map_err(|e| {
            tracing::warn!(error = %e, "room_user_state_update_dnd failed");
            AppTransportError::Internal
        })?;
    Ok(None)
}