// Fenrir console screen reader.
// Copyright (c) 2026 Storm Dragon
// SPDX-License-Identifier: GPL-3.0-or-later

package interaction

import "testing"

func TestListPrefixSearch(t *testing.T) {
	session, err := New_session(Form{Type: TabForm, Title: "Picker", Tabs: []Tab{{ID: "items", Label: "Items", Controls: []Control{
		{ID: "list", Label: "Item", Kind: List, Items: []string{"Default", "NetworkManager", "Ninjam", "Éclair"}, Action: "choose"},
		{ID: "cancel", Label: "Cancel", Kind: Button, Action: "cancel"},
	}}}})
	if err != nil {
		t.Fatal(err)
	}
	session.Handle(Key{Name: "tab"})
	for _, step := range []struct {
		key          Key
		want, prefix string
		selected     int
	}{
		{Key{Text: "N"}, "NetworkManager", "N", 1},
		{Key{Text: "i"}, "Ninjam", "Ni", 2},
		{Key{Text: "z"}, "No matches", "Ni", 2},
		{Key{Text: "n"}, "Ninjam", "Nin", 2},
		{Key{Name: "backspace"}, "Ninjam", "Ni", 2},
		{Key{Name: "backspace"}, "NetworkManager", "N", 1},
		{Key{Name: "backspace", Ctrl: true}, "Default", "", 0},
		{Key{Text: "é"}, "Éclair", "é", 3},
		{Key{Name: "down"}, "Default", "", 0},
		{Key{Text: "ni"}, "Ninjam", "ni", 2},
		{Key{Name: "up"}, "NetworkManager", "", 1},
		{Key{Text: "d"}, "Default", "d", 0},
		{Key{Text: "n", Ctrl: true}, "", "d", 0},
		{Key{Text: "n", Alt: true}, "", "d", 0},
		{Key{Text: "\n"}, "", "d", 0},
	} {
		got := session.Handle(step.key)
		control := session.Values()["items.list"]
		if got.Speech != step.want || got.Action != "" || control.Text != step.prefix || control.Selected != step.selected {
			t.Fatalf("key %+v: result %+v, prefix %q, selection %d; want %q, %q, %d", step.key, got, control.Text, control.Selected, step.want, step.prefix, step.selected)
		}
	}
	session.Handle(Key{Name: "tab"})
	session.Handle(Key{Name: "tab", Shift: true})
	if got := session.Handle(Key{Text: "ni"}).Speech; got != "Ninjam" {
		t.Fatal("focus change did not clear search", got)
	}
	if got := session.Handle(Key{Name: "enter"}).Action; got != "choose" {
		t.Fatal("search prevented activation", got)
	}
}