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use rocket::{get, post, serde::json::Json, Build, Rocket, State};
use rocket_okapi::{
    openapi, openapi_get_routes,
    rapidoc::{make_rapidoc, GeneralConfig, HideShowConfig, RapiDocConfig},
    settings::UrlObject,
    swagger_ui::{make_swagger_ui, SwaggerUIConfig},
};
use tracing::warn;
use zone_core::{Container, PartialEqOrDefault};
use zone_zfs::ZFS;

use crate::{Config, Error, Result};

/// # Test endpoint
///
/// Returns a list of containers based on the query.
#[openapi(tag = "Testing")]
#[get("/test")]
pub fn test_endpoint(zfs: &State<zone_zfs::ZFS>) -> Json<String> {
    Json(zfs.config.pool_name.to_owned())
}

/// List containers
///
/// Returns a list of containers based on the query.
#[openapi(tag = "Container")]
#[get("/container/list?<container..>")]
pub fn container_list(container: Container) -> Json<Vec<Container>> {
    zone_nspawn::get_containers()
        .unwrap_or_else(|err| {
            warn!("Invalid nspawn container found: {}", err);
            Default::default()
        })
        .into_iter()
        .map(|c| {
            c.try_into().unwrap_or_else(|err| {
                warn!("Invalid nspawn container found: {}", err);
                Default::default()
            })
        })
        .filter(|c| container.eq_or_default(c))
        .collect::<Vec<Container>>()
        .into()
}

/// Create container
///
/// Creates a new container volume from the provided container json data
#[openapi(tag = "Container")]
#[post("/container", data = "<container>")]
fn create_container(
    container: Json<Container>,
    zfs: &State<zone_zfs::ZFS>,
) -> Result<Json<Container>> {
    zfs.clone_from_latest(
        format!("{}-{}", container.user, container.id).into(),
        container.template.to_owned().into(),
    )?
    .try_into()
    .map_err(Error::from)
    .map(Container::into)
}

pub fn build_zfs(config: &Config) -> Result<ZFS> {
    zone_zfs::ZFS::custom(&config.zfs_config).map_err(Error::from)
}

pub fn build_rocket(config: &Config) -> Rocket<Build> {
    rocket::custom(config.rocket_config.to_owned())
        .mount(
            "/",
            openapi_get_routes![test_endpoint, container_list, create_container,],
        )
        .mount(
            "/swagger-ui/",
            make_swagger_ui(&SwaggerUIConfig {
                url: "../openapi.json".to_owned(),
                ..Default::default()
            }),
        )
        .mount(
            "/rapidoc/",
            make_rapidoc(&RapiDocConfig {
                general: GeneralConfig {
                    spec_urls: vec![UrlObject::new("General", "../openapi.json")],
                    ..Default::default()
                },
                hide_show: HideShowConfig {
                    allow_spec_url_load: false,
                    allow_spec_file_load: false,
                    ..Default::default()
                },
                ..Default::default()
            }),
        )
}