// Copyright (c) 2026 Storm Dragon
// SPDX-License-Identifier: GPL-3.0-or-later

package app

import (
	"git.stormux.org/storm/cthulhu/internal/atspi"
	"git.stormux.org/storm/cthulhu/internal/review"
)

// The event loop retains classification, not authority, alongside its current
// snapshot. Every replacement clears it, including a native update of the same
// object. Only complete owned document ancestry can opt Where Am I into export.
type currentSpeechSource struct {
	origin speechOrigin
	focus  atspi.ObjectID
	epoch  uint64
}

func (state *eventLoopState) setCurrent(snapshot atspi.Snapshot) {
	state.currentRevision++
	state.current = snapshot
	state.currentSpeech = currentSpeechSource{}
}

func (state *eventLoopState) setCurrentDocument(result review.Result) {
	state.setCurrent(result.DocumentPosition.Snapshot)
	sources := result.DocumentCaretContext
	if result.Err != nil || !state.current.ID().Valid() || len(sources) == 0 || sources[0].ID() != state.current.ID() {
		return
	}
	origin := review_speech_origin(sources)
	if source := accessibility_speech_origin(state.current); source != speechOriginLocal {
		origin = source
	}
	state.currentSpeech = currentSpeechSource{origin: origin, focus: result.DocumentFocus, epoch: result.DocumentEpoch}
}

func (handler *eventReviewHandler) currentSpeechOrigin() speechOrigin {
	source := handler.state.currentSpeech
	if handler.objectReview == nil || !source.focus.Valid() || source.focus != handler.objectReview.Focus() ||
		!handler.objectReview.CurrentDocumentResult(review.Result{DocumentEpoch: source.epoch}) {
		return speechOriginUnknown
	}
	return source.origin
}