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

package app

import (
	"strconv"
	"strings"
)

func (a *application) reading_regions_changed() {
	a.spellFeedback++
	if a.cues != nil {
		a.cues.Clear_progress()
	}
	// Changing a filter must not make an old, newly exposed prompt restore
	// speech. Observe it now as a baseline, without presenting the result.
	a.prompts.Observe(a.engine.Automatic_snapshot())
}

// remote_window runs only after the existing section-specific authorization.
// Python accepts these operations in both COMMAND and SETTING sections. Remote
// coordinates are zero-based inclusive cells, unlike spoken row/column reports.
func (a *application) remote_window(text string) (string, bool) {
	fields := strings.Fields(text)
	if len(fields) == 0 {
		return "", false
	}
	switch strings.ToUpper(fields[0]) {
	case "WINDOW":
		if len(fields) != 5 {
			return "WINDOW requires four coordinates: x1 y1 x2 y2", true
		}
		var coordinates [4]int
		for index := range coordinates {
			value, err := strconv.Atoi(fields[index+1])
			if err != nil {
				return "Invalid WINDOW coordinate", true
			}
			coordinates[index] = value
		}
		if err := a.engine.Set_window(coordinates[0], coordinates[1], coordinates[2], coordinates[3]); err != nil {
			return err.Error(), true
		}
	case "RESETWINDOW":
		if len(fields) != 1 {
			return "RESETWINDOW does not accept coordinates", true
		}
		a.engine.Clear_window()
	default:
		return "", false
	}
	a.reading_regions_changed()
	return "", true
}