// Fenrir console screen reader.
// Copyright (c) 2026 Storm Dragon
// SPDX-License-Identifier: GPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation, either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along with
// this program. If not, see <https://www.gnu.org/licenses/gpl-3.0.html>.

package review

import (
	"strings"

	"git.stormux.org/storm/fenrir/internal/i18n"
	"git.stormux.org/storm/fenrir/internal/presentation"
)

// screen_range reads a half-open range of screen cells, retaining row breaks
// and indentation while omitting terminal padding. It never moves either cursor.
func (r *Review) screen_range(start, end int) string {
	var lines []string
	for start < end {
		rowEnd := min((start/r.screen.Cols+1)*r.screen.Cols, end)
		lines = append(lines, strings.TrimRight(string(r.screen.Cells[start:rowEnd]), " \x00"))
		start = rowEnd
	}
	text := strings.Join(lines, "\n")
	if strings.TrimSpace(text) == "" {
		r.result.Cue = presentation.Blank
		return i18n.T("blank")
	}
	return text
}