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//! The PORTS surface: what the ports tail resolved on the last applied run.
//!
//! A part's declared connection points are DATA, not features
//! (`brep_kernel`'s `ports` module), and they are resolved at the TAIL of
//! every history run. The tail is not a feature, so its result reaches no
//! feature row: this is the only place a caller can read what it published,
//! what name it refused and which reference it could not resolve.
//!
//! The block itself is read and written through `History` (`ports_block`,
//! `set_ports_block`), which carries the pin/point follow inside the write —
//! so a caller that edits a point here edits its pin too, in one undo step.
use super::*;
use brep_kernel::PortsReport;
use serde_json::Value;
/// Which of a connection point's two reference fields a pick is filling.
///
/// They are two different questions about the same seat — WHERE it sits and
/// WHICH WAY it faces — so they admit different picks: a vertex locates a
/// point and implies no direction, which is why it is offered to one and not
/// the other.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum PortRefField {
/// `pointRef` — the geometry the point sits on.
Point,
/// `directionRef` — the geometry it faces along.
Direction,
}
impl PortRefField {
/// The block key this field writes.
pub fn key(self) -> &'static str {
match self {
PortRefField::Point => "pointRef",
PortRefField::Direction => "directionRef",
}
}
/// The picker's heading.
pub fn label(self) -> &'static str {
match self {
PortRefField::Point => "Seat this connection point on",
PortRefField::Direction => "Point it along",
}
}
/// Which pick kinds this field admits. A VERTEX seats a position and
/// implies no direction, so it is offered to `pointRef` alone; SOLID is
/// offered to neither, because a click meant for a face that landed on the
/// body instead would seat the point at the body's centre, which is never
/// what the click meant.
pub fn filter(self) -> Vec<String> {
let kinds: &[&str] = match self {
PortRefField::Point => &["VERTEX", "EDGE", "FACE", "PLANE"],
PortRefField::Direction => &["EDGE", "FACE", "PLANE"],
};
kinds.iter().map(|kind| (*kind).to_string()).collect()
}
}
impl EngineState {
/// The tail's row for one point of THIS document, by part-local address —
/// its seat, where it resolved and which way it faces. `None` for a point
/// the last run did not resolve (one just typed in, or one whose group
/// name is refused).
pub fn port_point_row(&self, address: &str) -> Option<&brep_kernel::PortPointRow> {
self.ports_report()?
.points
.iter()
.find(|row| row.address == address)
}
/// The connection point of THIS DOCUMENT that the viewport selection
/// names, if any — the 3D half of "select it there, see it here".
///
/// A declared point draws as a synthesized sheet keyed by its ADDRESS, and
/// its base vertex and line hang off that address, so a click anywhere on
/// it selects one of three names that all peel back to the same point.
///
/// A NAMESPACED address (`ACOMP1:J1.VCC`) is deliberately not adopted: it
/// belongs to a component this assembly places, not to the document being
/// qualified, and selecting its row here would offer to edit a point this
/// document does not own.
pub fn selected_port_point(&self) -> Option<String> {
let declared: Vec<String> = self
.history
.declared_points()
.into_iter()
.map(|point| point.address())
.collect();
self.emphasis.selected_solids.iter().find_map(|name| {
let address = name
.strip_suffix(":Base")
.or_else(|| name.strip_suffix(":PortLine"))
.unwrap_or(name);
declared
.iter()
.find(|candidate| candidate.as_str() == address)
.cloned()
})
}
/// Edit ONE declared point's JSON object in place, by address, and write
/// the block back through `History::set_ports_block` (which carries the
/// pin/point follow and re-runs). Returns whether the point was found.
///
/// The point is handed to `edit` as its RAW object, one key at a time, for
/// the reason the Qualify panel edits it that way: a round trip through
/// `PortDeclaration` drops any field the struct does not model, and no
/// lane may be the reason a later slice's field disappears when the field
/// beside it is touched.
pub fn edit_port_point(
&mut self,
address: &str,
coalesce: Option<&str>,
edit: impl FnOnce(&mut serde_json::Map<String, Value>),
) -> bool {
let Some((port, point_name)) = brep_kernel::split_address(address) else {
return false;
};
let Some(mut block) = self
.history
.ports_block()
.and_then(Value::as_array)
.cloned()
else {
return false;
};
let mut found = false;
for group in block.iter_mut() {
if group.get("name").and_then(Value::as_str).map(str::trim) != Some(port) {
continue;
}
let Some(points) = group.get_mut("points").and_then(Value::as_array_mut) else {
continue;
};
for candidate in points.iter_mut() {
if candidate.get("name").and_then(Value::as_str).map(str::trim)
!= Some(point_name)
{
continue;
}
let Some(object) = candidate.as_object_mut() else {
continue;
};
edit(object);
found = true;
break;
}
break;
}
if found {
self.history.set_ports_block(Some(Value::Array(block)), coalesce);
}
found
}
// --- the reference picker's connection-point flavour ---------------------
/// Enter the reference picker to seat `address` on geometry.
///
/// Unlike every feature field, this does NOT roll the history back: a
/// connection point resolves at the TAIL of the run, against the finished
/// part, so the geometry it may be seated on is exactly what is on screen.
/// Rolling would hide from the user the very faces the point can name.
pub fn begin_ref_select_for_port_point(&mut self, address: &str, field: PortRefField) {
// The handles come OFF first. The picker takes over the shell and the
// Qualify panel is not drawn while it is up, so nothing else would
// take them off — and `route_drag_start` puts the transform gizmo
// AHEAD of the camera with no picker guard, so a user dragging to
// orbit round to the face they want to pick would drag the point
// instead.
if self.transform_armed_port_point() == Some(address) {
self.disarm_transform();
}
let filter = field.filter();
self.selection_filter = SelectionFilter::from_ref_filter(&filter);
let seed = self
.declared_point_value(address)
.and_then(|point| {
point
.get(field.key())
.and_then(Value::as_str)
.map(str::to_string)
})
.filter(|name| !name.trim().is_empty())
.into_iter()
.collect();
self.ref_select = Some(RefSelectState {
feature_id: address.to_string(),
path: vec![field.key().to_string()],
label: format!("{} \u{2014} {address}", field.label()),
filter,
multiple: false,
names: seed,
restore_index: self.history.rollback(),
target: RefSelectTarget::PortPoint { field },
});
self.sync_ref_select_emphasis();
}
/// Unseat a connection point: clear one of its reference fields and
/// re-run. The OFFSET is deliberately left as it is — it is on screen, and
/// silently rewriting the numbers a user can see is worse than a point
/// that visibly moved to where those numbers say.
pub fn clear_port_point_ref(&mut self, address: &str, field: PortRefField) {
self.ports_commit_ref(address, field, "");
self.rerun_history();
}
/// One declared point's raw object, by address.
pub(super) fn declared_point_value(&self, address: &str) -> Option<Value> {
let (port, name) = brep_kernel::split_address(address)?;
self.history
.ports_block()?
.as_array()?
.iter()
.find(|group| group.get("name").and_then(Value::as_str).map(str::trim) == Some(port))?
.get("points")?
.as_array()?
.iter()
.find(|point| point.get("name").and_then(Value::as_str).map(str::trim) == Some(name))
.cloned()
}
/// Commit the picker's name into the point's reference field, WITHOUT
/// re-running — the picker's shared tail re-runs.
///
/// Installing the FIRST reference on a point also zeroes its transform.
/// The numbers that were there described an absolute placement; the same
/// numbers in a seat mean somewhere else entirely, so keeping them would
/// fling the point off the face the user just picked. Clearing a reference
/// does NOT restore them: the offset stays as it is, now read in the world
/// frame, and it is on screen in the panel where the user can see it.
pub(super) fn ports_commit_ref(&mut self, address: &str, field: PortRefField, name: &str) {
let name = name.trim().to_string();
let was_seated = self
.declared_point_value(address)
.map(|point| {
["pointRef", "directionRef"].iter().any(|key| {
point
.get(*key)
.and_then(Value::as_str)
.is_some_and(|value| !value.trim().is_empty())
})
})
.unwrap_or(false);
self.edit_port_point(address, None, |point| {
match name.is_empty() {
true => {
point.remove(field.key());
}
false => {
point.insert(field.key().into(), Value::String(name.clone()));
}
}
if !was_seated && !name.is_empty() {
point.insert(
"transform".into(),
serde_json::json!({
"position": [0.0, 0.0, 0.0],
"rotationEuler": [0.0, 0.0, 0.0],
}),
);
}
});
}
/// The ports tail's report of the last APPLIED run: whether this document
/// is an encapsulation boundary, every point it resolved, and everything
/// about the block that does not hold. `None` before the first run, and
/// for a document that declares no `ports` block.
pub fn ports_report(&self) -> Option<&PortsReport> {
self.ports_report.as_ref()
}
/// The Qualify panel's verifier global: the declared block and the tail's
/// report, as one JSON object. `report` is null before the first run.
pub fn ports_state_json(&self) -> String {
serde_json::json!({
"block": self.history.ports_block(),
"report": self.ports_report,
})
.to_string()
}
}