//! Layer endpoints.

use actix_web::{
    delete, get, post, put,
    web::{Json, Path, Query},
    HttpResponse, Result,
};
use uuid::Uuid;

use crate::{
    config::{
        auth::user_info::UserInfo,
        data::{SharedBroadcaster, SharedPool},
    },
    model::dto::{
        actions::{Action, ActionType},
        core::{
            ActionDtoWrapper, ActionDtoWrapperDeleteLayer, ActionDtoWrapperNewLayer,
            ActionDtoWrapperUpdateLayer,
        },
        layers::LayerSearchParameters,
    },
    service::layer,
};

/// Endpoint for searching layers. Layers are returned in order of their
/// `order_index`.
///
/// # Errors
/// * If the connection to the database could not be established.
#[utoipa::path(
    context_path = "/api/maps/{map_id}/layers",
    params(
        ("map_id" = i32, Path, description = "The id of the map the layer is on"),
        LayerSearchParameters,
    ),
    responses(
        (status = 200, description = "Search layers", body = VecLayerDto)
    ),
    security(
        ("oauth2" = [])
    )
)]
#[get("")]
pub async fn find(
    search_query: Query<LayerSearchParameters>,
    map_id: Path<i32>,
    pool: SharedPool,
) -> Result<HttpResponse> {
    let mut search_params = search_query.into_inner();
    search_params.map_id = Some(map_id.into_inner());

    let response = layer::find(search_params, &pool).await?;
    Ok(HttpResponse::Ok().json(response))
}

/// Endpoint for fetching a layer by its id.
///
/// # Errors
/// * If the connection to the database could not be established.
#[utoipa::path(
    context_path = "/api/maps/{map_id}/layers",
    params(
        ("map_id" = i32, Path, description = "The id of the map the layer is on"),
    ),
    responses(
        (status = 200, description = "Fetch layer by id", body = LayerDto)
    ),
    security(
        ("oauth2" = [])
    )
)]
#[get("/{id}")]
pub async fn find_by_id(path: Path<(i32, Uuid)>, pool: SharedPool) -> Result<HttpResponse> {
    let (_, id) = path.into_inner();
    let response = layer::find_by_id(id, &pool).await?;
    Ok(HttpResponse::Ok().json(response))
}

/// Endpoint for creating a new layer.
///
/// # Errors
/// * If the connection to the database could not be established.
#[utoipa::path(
    context_path = "/api/maps/{map_id}/layers",
    params(
        ("map_id" = i32, Path, description = "The id of the map the layer is on"),
    ),
    request_body = ActionDtoWrapperUpdateLayer,
    responses(
        (status = 201, description = "Create a plant layer", body = LayerDto)
    ),
    security(
        ("oauth2" = [])
    )
)]
#[post("")]
pub async fn create(
    path: Path<i32>,
    new_layer: Json<ActionDtoWrapperNewLayer>,
    pool: SharedPool,
    broadcaster: SharedBroadcaster,
    user_info: UserInfo,
) -> Result<HttpResponse> {
    let ActionDtoWrapper { action_id, dto } = new_layer.into_inner();
    let map_id = path.into_inner();
    let user_id = user_info.id;

    let dto = layer::create(map_id, dto, &pool).await?;

    broadcaster
        .broadcast(
            map_id,
            Action {
                action_id,
                user_id,
                action: ActionType::CreateLayer(dto.clone()),
            },
        )
        .await;

    Ok(HttpResponse::Created().json(dto))
}

/// Endpoint for updating layers.
///
/// # Errors
/// * If the connection to the database could not be established.
#[utoipa::path(
    context_path = "/api/maps/{map_id}/layers",
    params(
        ("map_id" = i32, Path, description = "The id of the map"),
    ),
    request_body = ActionDtoWrapperUpdateLayer,
    responses(
        (status = 200, description = "Layers have been reordered")
    ),
    security(
        ("oauth2" = [])
    )
)]
#[put("")]
pub async fn update(
    path: Path<i32>,
    update: Json<ActionDtoWrapperUpdateLayer>,
    pool: SharedPool,
    broadcaster: SharedBroadcaster,
    user_info: UserInfo,
) -> Result<HttpResponse> {
    let ActionDtoWrapper { action_id, dto } = update.into_inner();
    let map_id = path.into_inner();
    let user_id = user_info.id;

    let action = layer::update(map_id, dto.clone(), &pool).await?;

    broadcaster
        .broadcast(
            map_id,
            Action {
                action_id,
                user_id,
                action,
            },
        )
        .await;

    Ok(HttpResponse::Ok().finish())
}

/// Endpoint for deleting a layer.
/// Layers are soft-deleted and marked as deleted.
///
/// # Errors
/// * If the connection to the database could not be established.
#[utoipa::path(
    context_path = "/api/maps/{map_id}/layers",
    params(
        ("map_id" = i32, Path, description = "The id of the map the layer is on"),
    ),
    request_body = ActionDtoWrapperDeleteLayer,
    responses(
        (status = 200, description = "Delete a layer")
    ),
    security(
        ("oauth2" = [])
    )
)]
#[delete("")]
pub async fn delete(
    path: Path<i32>,
    delete_layer: Json<ActionDtoWrapperDeleteLayer>,
    pool: SharedPool,
    broadcaster: SharedBroadcaster,
    user_info: UserInfo,
) -> Result<HttpResponse> {
    let ActionDtoWrapper { action_id, dto } = delete_layer.into_inner();
    let map_id = path.into_inner();
    let user_id = user_info.id;
    let layer_id = dto.id;

    layer::delete_by_id(map_id, layer_id, &pool).await?;

    broadcaster
        .broadcast(
            map_id,
            Action {
                action_id,
                user_id,
                action: ActionType::DeleteLayer(layer_id),
            },
        )
        .await;

    Ok(HttpResponse::Ok().finish())
}