edc-web-ui 0.1.0

use crate::components::list_of_rules::ListOfRules;
use crate::components::simple_or_id_field::SimpleOrIdField;
use crate::contexts::use_edc_connector_context;
use edc_connector_client::types::policy::{
  Action, Constraint, NewPolicyDefinition, Obligation, Permission, Policy, PolicyKind, Prohibition,
  Target,
};
use patternfly_yew::prelude::*;
use yew::platform::spawn_local;
use yew::prelude::*;

#[derive(Copy, Clone, PartialEq, Eq, strum::Display)]
enum Options {
  Agreement,
  Offer,
  Set,
}

#[function_component]
pub fn CreatePolicy() -> Html {
  let edc_connector_context = use_edc_connector_context();

  let identifier = use_state(String::new);
  let kind = use_state(|| Options::Set);
  let assignee = use_state(String::default);
  let assigner = use_state(String::default);
  let target = use_state(|| (true, String::default()));
  let permissions = use_state(Vec::new);
  let prohibitions = use_state(Vec::new);
  let obligations = use_state(Vec::new);

  let onsubmit = use_callback(
    (
      edc_connector_context,
      identifier.clone(),
      kind.clone(),
      assignee.clone(),
      assigner.clone(),
      target.clone(),
      permissions.clone(),
      prohibitions.clone(),
      obligations.clone(),
    ),
    |event: SubmitEvent,
     (
      edc_connector_context,
      identifier,
      kind,
      assignee,
      assigner,
      target,
      permissions,
      prohibitions,
      obligations,
    )| {
      event.prevent_default();

      let edc_connector_context = edc_connector_context.clone();
      let identifier = (**identifier).clone();
      let kind = **kind;
      let assignee = (**assignee).clone();
      let assigner = (**assigner).clone();
      let (is_simple_target, target) = (**target).clone();

      let permissions = (**permissions)
        .iter()
        .map(|(action, constraints): &(Action, Vec<Constraint>)| {
          Permission::builder()
            .action(action.clone())
            .constraints(constraints.clone())
            .build()
        })
        .collect();

      let prohibitions = (**prohibitions)
        .iter()
        .map(|(action, constraints): &(Action, Vec<Constraint>)| {
          Prohibition::builder()
            .action(action.clone())
            .constraints(constraints.clone())
            .build()
        })
        .collect();

      let obligations = (**obligations)
        .iter()
        .map(|(action, constraints): &(Action, Vec<Constraint>)| {
          Obligation::builder()
            .action(action.clone())
            .constraints(constraints.clone())
            .build()
        })
        .collect();

      spawn_local(async move {
        let kind = match kind {
          Options::Agreement => PolicyKind::Agreement,
          Options::Offer => PolicyKind::Offer,
          Options::Set => PolicyKind::Set,
        };

        let policy_builder = Policy::builder()
          .kind(kind)
          .permissions(permissions)
          .prohibitions(prohibitions)
          .obligations(obligations);

        let policy_builder = if !assignee.is_empty() {
          policy_builder.maybe_assignee(Some(assignee))
        } else {
          policy_builder.maybe_assignee(None::<String>)
        };

        let policy_builder = if !assigner.is_empty() {
          policy_builder.maybe_assigner(Some(assigner))
        } else {
          policy_builder.maybe_assigner(None::<String>)
        };

        let policy_builder = if !target.is_empty() {
          if is_simple_target {
            policy_builder.target(Target::Simple(target))
          } else {
            policy_builder.target(Target::Id { id: target })
          }
        } else {
          policy_builder.maybe_target(None::<Target>)
        };

        let policy = policy_builder.build();

        let new_policy = NewPolicyDefinition::builder()
          .id(&identifier)
          .policy(policy)
          .build();

        if let Some(client) = edc_connector_context.get_client() {
          let _ = client.policies().create(&new_policy).await;
        }
      })
    },
  );

  let onchange_identifier = {
    let identifier = identifier.clone();

    use_callback((), move |value, _| {
      identifier.set(value);
    })
  };

  let onselect_kind = {
    let kind = kind.clone();

    use_callback((), move |value, _| {
      kind.set(value);
    })
  };

  let onchange_assignee = {
    let assignee = assignee.clone();

    use_callback((), move |value: String, _| {
      assignee.set(value);
    })
  };

  let onchange_assigner = {
    let assigner = assigner.clone();

    use_callback((), move |value: String, _| {
      assigner.set(value);
    })
  };

  let onchange_target = {
    let target = target.clone();

    use_callback((), move |value: (bool, String), _| {
      target.set(value);
    })
  };

  let onchange_permissions = {
    let permissions = permissions.clone();
    use_callback((), move |list, _| {
      permissions.set(list);
    })
  };

  let onchange_prohibitions = {
    let prohibitions = prohibitions.clone();
    use_callback((), move |list, _| {
      prohibitions.set(list);
    })
  };

  let onchange_obligations = {
    let obligations = obligations.clone();
    use_callback((), move |list, _| {
      obligations.set(list);
    })
  };

  let (target_is_simple, target_value) = (*target).clone();

  let disabled = false;

  html!(
    <Form {onsubmit}>
      <FormGroup
        label={"Identifier"}
        required={true}
        >
        <TextInput
          required={true}
          value={(*identifier).to_string()}
          onchange={onchange_identifier}
          />
      </FormGroup>

      <FormGroup
        label={"Kind"}
        required={true}
        >
        <SimpleSelect<Options>
          selected={*kind}
          onselect={onselect_kind}
          entries={vec![Options::Agreement, Options::Offer, Options::Set]}
          />
      </FormGroup>

      <FormGroup
        label={"Permissions"}
        >
        <ListOfRules
          list={(*permissions).clone()}
          onchange={onchange_permissions}
          />
      </FormGroup>

      <FormGroup
        label={"Prohibitions"}
        >
        <ListOfRules
          list={(*prohibitions).clone()}
          onchange={onchange_prohibitions}
          />
      </FormGroup>

      <FormGroup
        label={"Obligations"}
        >
        <ListOfRules
          list={(*obligations).clone()}
          onchange={onchange_obligations}
          />
      </FormGroup>

      <FormGroup
        label={"Assignee"}
        >
        <TextInput
          value={(*assignee).clone()}
          onchange={onchange_assignee}
          />
      </FormGroup>

      <FormGroup
        label={"Assigner"}
        >
        <TextInput
          value={(*assigner).clone()}
          onchange={onchange_assigner}
          />
      </FormGroup>

      <FormGroup
        label={"Target"}
        >
        <SimpleOrIdField onchange={onchange_target} is_simple={target_is_simple} value={target_value} />
      </FormGroup>

      <ActionGroup>
        <Button
          variant={ButtonVariant::Primary}
          label="Submit"
          r#type={ButtonType::Submit}
          {disabled}
          />
        <Button variant={ButtonVariant::Secondary} label="Reset" r#type={ButtonType::Reset}/>
      </ActionGroup>
    </Form>
  )
}