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122 lines
3.5 KiB
C++
122 lines
3.5 KiB
C++
/*
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* Copyright (c) 2024, Bastiaan van der Plaat <bastiaan.v.d.plaat@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "FavoritesModel.h"
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#include <AK/JsonArray.h>
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#include <AK/JsonObject.h>
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namespace Maps {
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GUI::Variant FavoritesModel::data(GUI::ModelIndex const& index, GUI::ModelRole role) const
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{
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if (index.row() < 0 || index.row() >= row_count())
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return {};
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if (role == GUI::ModelRole::TextAlignment)
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return Gfx::TextAlignment::CenterLeft;
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auto const& favorite = m_favorites.at(index.row());
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if (role == GUI::ModelRole::Display)
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return ByteString::formatted("{}\n{:.5}, {:.5}", favorite.name, favorite.latlng.latitude, favorite.latlng.longitude);
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return {};
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}
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Optional<Favorite&> FavoritesModel::get_favorite(GUI::ModelIndex const& index)
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{
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if (index.row() < 0 || index.row() >= row_count())
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return {};
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return m_favorites.at(index.row());
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}
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void FavoritesModel::add_favorite(Favorite favorite)
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{
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m_favorites.append(move(favorite));
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invalidate();
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}
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void FavoritesModel::update_favorite(GUI::ModelIndex const& index, Favorite favorite)
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{
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if (index.row() < 0 || index.row() >= row_count())
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return;
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m_favorites[index.row()] = move(favorite);
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invalidate();
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}
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void FavoritesModel::delete_favorite(Favorite const& favorite)
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{
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m_favorites.remove_first_matching([&](auto& other) {
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return other == favorite;
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});
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invalidate();
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}
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ErrorOr<void> FavoritesModel::save_to_file(Core::File& file) const
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{
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JsonArray array {};
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array.ensure_capacity(m_favorites.size());
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for (auto const& favorite : m_favorites) {
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JsonObject object;
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object.set("name", favorite.name.to_byte_string());
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object.set("latitude", favorite.latlng.latitude);
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object.set("longitude", favorite.latlng.longitude);
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object.set("zoom", favorite.zoom);
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TRY(array.append(object));
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}
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auto json_string = array.to_byte_string();
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TRY(file.write_until_depleted(json_string.bytes()));
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return {};
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}
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ErrorOr<void> FavoritesModel::load_from_file(Core::File& file)
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{
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auto json_bytes = TRY(file.read_until_eof());
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StringView json_string { json_bytes };
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auto json = TRY(JsonValue::from_string(json_string));
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if (!json.is_array())
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return Error::from_string_literal("Failed to read favorites from file: Not a JSON array.");
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auto& json_array = json.as_array();
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Vector<Favorite> new_favorites;
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TRY(new_favorites.try_ensure_capacity(json_array.size()));
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TRY(json_array.try_for_each([&](JsonValue const& json_value) -> ErrorOr<void> {
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if (!json_value.is_object())
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return {};
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auto& json_object = json_value.as_object();
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Favorite favorite;
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auto name = json_object.get_byte_string("name"sv);
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if (!name.has_value())
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return {};
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favorite.name = MUST(String::from_byte_string(*name));
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auto latitude = json_object.get_double_with_precision_loss("latitude"sv);
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if (!latitude.has_value())
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return {};
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auto longitude = json_object.get_double_with_precision_loss("longitude"sv);
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if (!longitude.has_value())
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return {};
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favorite.latlng = { *latitude, *longitude };
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auto zoom = json_object.get_i32("zoom"sv);
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if (!zoom.has_value())
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return {};
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favorite.zoom = *zoom;
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new_favorites.append(favorite);
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return {};
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}));
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m_favorites = move(new_favorites);
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invalidate();
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return {};
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}
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}
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