edc_web_components/pages/

policy_page.rs

use crate::components::ListPolicies;
use crate::contexts::{PolicyLibraryItem, use_edc_connector_context, use_policy_library_context};
use crate::models::PolicyDefinitionItem;
use edc_connector_client::EdcConnectorApiVersion;
use edc_connector_client::types::policy::NewPolicyDefinition;
use edc_connector_client::types::query::Query;
use log::error;
use patternfly_yew::prelude::*;
use uuid::Uuid;
use yew::platform::spawn_local;
use yew::prelude::*;
use yew::suspense::use_future_with;

#[derive(Clone, Debug, PartialEq, Properties)]
pub struct PolicyPageProps {
  #[prop_or("List Policies".to_string())]
  pub title: String,
  #[prop_or(Some("A policy consists of one or more rules. The policy is then bound to an asset during the creation of the contract definition.".to_string()))]
  pub tag_line: Option<String>,
  #[prop_or("Create a Policy".to_string())]
  pub create_title: String,
  #[prop_or("Import from Library".to_string())]
  pub open_library_title: String,
  pub on_new_policy: Callback<()>,
  pub onshow: Callback<String>,
}

#[component]
pub fn PolicyPage(props: &PolicyPageProps) -> Html {
  let refresh = use_state(|| 0usize);
  let offset = use_state(|| 0usize);
  let limit = use_state(|| 10usize);

  let onoffset = use_callback(
    (refresh.clone(), offset.setter()),
    |offset, (refresh, offset_setter)| {
      offset_setter.set(offset);
      refresh.set(**refresh + 1);
    },
  );

  let onlimit = use_callback(
    (refresh.clone(), limit.setter()),
    |limit, (refresh, limit_setter)| {
      limit_setter.set(limit);
      refresh.set(**refresh + 1);
    },
  );

  let edc_connector_context = use_edc_connector_context();

  let ondelete = use_callback(
    (refresh.clone(), edc_connector_context.clone()),
    |policy_id: String, (refresh, edc_connector_context)| {
      let refresh = refresh.clone();
      let edc_connector_context = edc_connector_context.clone();
      let policy_id = policy_id.clone();

      spawn_local(async move {
        if let Some(client) = edc_connector_context.get_client() {
          let _ = client
            .policies(EdcConnectorApiVersion::V4)
            .delete(&policy_id)
            .await;
          log::warn!("Deleted policy {} - {}", policy_id, *refresh + 1);
          refresh.set(*refresh + 1);
        }
      });
    },
  );

  let tag_line = props
    .tag_line
    .as_ref()
    .map(|tag_line| html!(<p>{ tag_line }</p>))
    .unwrap_or_default();

  let policy_library_context = use_policy_library_context();

  let expanded = use_state_eq(|| false);
  let onclick = use_callback(expanded.clone(), |_, expanded| {
    expanded.set(!**expanded);
  });

  let open_policy_library = policy_library_context.as_ref().map(|_| {
    html_nested!(
      <SplitItem>
        <Button icon={Icon::Catalog} {onclick} variant={ButtonVariant::Secondary}>
          { &props.open_library_title }
        </Button>
      </SplitItem>
    )
  });

  let import_policy = use_callback(
    (edc_connector_context.clone(), refresh.clone()),
    |policy_library_item: PolicyLibraryItem, (edc_connector_context, refresh)| {
      let edc_connector_context = edc_connector_context.clone();
      let refresh = refresh.clone();

      let new_policy_definition = NewPolicyDefinition::builder()
        .id(Uuid::new_v4().to_string())
        .policy(policy_library_item.policy.clone())
        .private_property("name", policy_library_item.name)
        .build();

      spawn_local(async move {
        if let Some(client) = edc_connector_context.get_client() {
          match client
            .policies(EdcConnectorApiVersion::V4)
            .create(&new_policy_definition)
            .await
          {
            Ok(_) => {
              refresh.set(*refresh + 1);
            }
            Err(error) => {
              error!("Failed to import Policy: {}", error);
            }
          }
        }
      })
    },
  );

  let panel_content = policy_library_context
    .clone()
    .map(move |policy_library_context| {
      let items = policy_library_context.policy_library().iter().map(|item| {
        let name = item.name.to_string();
        let item = item.clone();

        html!(
          <StackItem>
            <Button
              variant={ButtonVariant::Control}
              icon={Icon::Import}
              onclick={import_policy.reform(move |_| item.clone())}
            >
              { name }
            </Button>
          </StackItem>
        )
      });

      html!(
        <Panel>
          <PanelHeader>{ "Policy Library" }</PanelHeader>
          <PanelMain>
            <PanelMainBody>
              <Stack gutter=true>{ for items }</Stack>
            </PanelMainBody>
          </PanelMain>
        </Panel>
      )
    });

  html!(
    <Stack gutter=true>
      <StackItem>
        <Split gutter=true>
          <SplitItem fill=true>
            <Title level={Level::H3} size={Size::XXLarge}>{ &props.title }</Title>
            { tag_line }
          </SplitItem>
          { open_policy_library }
          <SplitItem>
            <Button
              icon={Icon::Plus}
              onclick={props.on_new_policy.reform(|_| ())}
              variant={ButtonVariant::Primary}
            >
              { &props.create_title }
            </Button>
          </SplitItem>
        </Split>
      </StackItem>
      <StackItem>
        <Drawer expanded={*expanded} inline=true>
          <DrawerContent {panel_content}>
            <DrawerContentBody>
              <Suspense>
                <PolicyPageInner
                  offset={*offset}
                  limit={*limit}
                  {onoffset}
                  {onlimit}
                  {ondelete}
                  onshow={props.onshow.clone()}
                  force_refresh={*refresh}
                />
              </Suspense>
            </DrawerContentBody>
          </DrawerContent>
        </Drawer>
      </StackItem>
    </Stack>
  )
}

#[derive(Clone, Debug, PartialEq, Properties)]
pub struct PolicyPageInnerProps {
  pub offset: usize,
  pub limit: usize,
  pub onoffset: Callback<usize>,
  pub onlimit: Callback<usize>,
  pub ondelete: Callback<String>,
  pub onshow: Callback<String>,
  pub force_refresh: usize,
}

#[component]
pub fn PolicyPageInner(props: &PolicyPageInnerProps) -> HtmlResult {
  let edc_connector_context = use_edc_connector_context();

  let policy_definition_items = use_future_with(
    (
      edc_connector_context,
      props.limit,
      props.offset,
      props.force_refresh,
    ),
    |parameters| async move {
      let (edc_connector_context, limit, offset, _) = (*parameters).clone();

      let query = Query::builder()
        .limit(limit as u32)
        .offset(offset as u32)
        .build();

      if let Some(client) = edc_connector_context.get_client() {
        client
          .policies(EdcConnectorApiVersion::V4)
          .query(query)
          .await
          .unwrap_or_default()
          .into_iter()
          .map(PolicyDefinitionItem::from)
          .collect::<Vec<_>>()
      } else {
        vec![]
      }
    },
  )?;

  let policy_definition_items = (*policy_definition_items).clone();

  Ok(html!(
    <ListPolicies
      policy_definition_items={policy_definition_items}
      offset={props.offset}
      limit={props.limit}
      onoffset={props.onoffset.clone()}
      onlimit={props.onlimit.clone()}
      ondelete={props.ondelete.clone()}
      onshow={props.onshow.clone()}
    />
  ))
}