// 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 (
	"testing"

	"git.stormux.org/storm/fenrir/internal/command"
	"git.stormux.org/storm/fenrir/internal/presentation"
	"git.stormux.org/storm/fenrir/internal/screen"
)

func TestMarksUnicodeReverseSingleMarkAndSessionRetirement(t *testing.T) {
	snapshot := screen.Snapshot{Active: true, Terminal: 1, Rows: 2, Cols: 5, Cells: []rune("é界abcnext ")}
	var review Review
	review.Update(snapshot)
	if got := review.Set_mark(); got.Text != "no review cursor" {
		t.Fatal(got)
	}
	review.Execute(command.CurrentChar)
	if got := review.Set_mark(); got.Cue != presentation.PlaceStartMark {
		t.Fatal(got)
	}
	review.Execute(command.NextChar)
	if text, ok := review.Marked_text(true); !ok || text != "é界" {
		t.Fatal(text, ok)
	}
	if _, ok := review.Marked_text(false); ok {
		t.Fatal("preview accepted one mark")
	}
	review.Execute(command.NextLine)
	if got := review.Set_mark(); got.Cue != presentation.PlaceEndMark {
		t.Fatal(got)
	}
	if text, ok := review.Marked_text(false); !ok || text != "é界abc\nne" {
		t.Fatal(text, ok)
	}
	review.Clear_marks()
	review.Set_mark()
	review.Execute(command.Top)
	review.Execute(command.LineStart)
	review.Set_mark()
	if text, ok := review.Marked_text(false); !ok || text != "é界abc\nne" {
		t.Fatal("reverse selection", text, ok)
	}
	snapshot.Generation++
	review.Update(snapshot)
	if _, ok := review.Marked_text(true); ok {
		t.Fatal("marks survived screen replacement")
	}
}