| 1 | // License: GPL. For details, see LICENSE file. |
| 2 | package org.openstreetmap.josm.plugins.todo; |
| 3 | |
| 4 | import java.io.InputStream; |
| 5 | import java.io.OutputStream; |
| 6 | import java.util.Objects; |
| 7 | |
| 8 | import javax.json.Json; |
| 9 | import javax.json.JsonObject; |
| 10 | import javax.json.JsonValue; |
| 11 | import javax.json.stream.JsonParser; |
| 12 | |
| 13 | import org.openstreetmap.josm.data.coor.ILatLon; |
| 14 | import org.openstreetmap.josm.data.coor.LatLon; |
| 15 | import org.openstreetmap.josm.data.osm.BBox; |
| 16 | import org.openstreetmap.josm.data.osm.INode; |
| 17 | import org.openstreetmap.josm.data.osm.IRelation; |
| 18 | import org.openstreetmap.josm.data.osm.IWay; |
| 19 | import org.openstreetmap.josm.data.osm.SimplePrimitiveId; |
| 20 | import org.openstreetmap.josm.gui.MainApplication; |
| 21 | import org.openstreetmap.josm.gui.layer.AbstractOsmDataLayer; |
| 22 | import org.openstreetmap.josm.io.session.PluginSessionExporter; |
| 23 | import org.openstreetmap.josm.io.session.PluginSessionImporter; |
| 24 | |
| 25 | /** |
| 26 | * Import and export the TODO list items |
| 27 | */ |
| 28 | public class TodoImportExport implements PluginSessionImporter, PluginSessionExporter { |
| 29 | private record ParsedTodoListItem(TodoListItem item, boolean done){} |
| 30 | |
| 31 | @Override |
| 32 | public void write(OutputStream outputStream) { |
| 33 | final var dialog = MainApplication.getMap().getToggleDialog(TodoDialog.class); |
| 34 | try (var generator = Json.createGenerator(outputStream)) { |
| 35 | generator.writeStartArray(); |
| 36 | for (var item : dialog.model.getTodoList()) { |
| 37 | generator.writeStartObject(); |
| 38 | generator.write("layer", item.layer().getName()); |
| 39 | // We ought to store the geometry and tags of new items, but getting a new object based off of the centroid |
| 40 | // should work 99% of the time. If we are storing geometry and tags of items, we will probably have |
| 41 | // issues if someone imports a dataset and uses the TODO list plugin. |
| 42 | if (item.primitive().isNew()) { |
| 43 | // We need to convert the primitive to something we can persist across sessions. |
| 44 | // For now, we will only store the centroid |
| 45 | final ILatLon centroid; |
| 46 | if (item.primitive() instanceof ILatLon ll) { |
| 47 | centroid = ll; |
| 48 | } else { |
| 49 | centroid = item.primitive().getBBox().getCenter(); |
| 50 | } |
| 51 | generator.writeStartObject("centroid") |
| 52 | .write("lat", centroid.lat()) |
| 53 | .write("lon", centroid.lon()) |
| 54 | .writeEnd(); |
| 55 | } |
| 56 | // This needs to be >=0 for the parsing section. |
| 57 | generator.write("primitive", item.primitive().getOsmPrimitiveId().toString()); |
| 58 | if (dialog.model.isDone(item)) { |
| 59 | generator.write("done", true); |
| 60 | } |
| 61 | generator.writeEnd(); |
| 62 | } |
| 63 | generator.writeEnd(); |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | |
| 68 | @Override |
| 69 | public boolean read(InputStream inputStream) { |
| 70 | try (var parser = Json.createParser(inputStream)) { |
| 71 | if (parser.hasNext() && parser.next() == JsonParser.Event.START_ARRAY) { |
| 72 | final var items = parser.getArrayStream().filter(val -> val.getValueType() == JsonValue.ValueType.OBJECT) |
| 73 | .map(JsonValue::asJsonObject).map(TodoImportExport::parseItem).filter(Objects::nonNull) |
| 74 | .toList(); |
| 75 | final var model = MainApplication.getMap().getToggleDialog(TodoDialog.class).model; |
| 76 | model.addItems(items.stream().map(ParsedTodoListItem::item).toList()); |
| 77 | model.markItems(items.stream().filter(ParsedTodoListItem::done).map(ParsedTodoListItem::item).toList()); |
| 78 | return true; |
| 79 | } |
| 80 | } |
| 81 | return false; |
| 82 | } |
| 83 | |
| 84 | private static ParsedTodoListItem parseItem(JsonObject object) { |
| 85 | final var layerString = object.getString("layer", null); |
| 86 | final var primitiveIdString = object.getString("primitive", null); |
| 87 | final var done = object.getBoolean("done", false); |
| 88 | var primitiveId = primitiveIdString == null ? null : SimplePrimitiveId.fromString(primitiveIdString); |
| 89 | TodoListItem item = null; |
| 90 | if (layerString != null && primitiveId != null) { |
| 91 | // Hopefully the user doesn't have two layers with the same primitive. |
| 92 | // If this happens often, we may need to fiddle with the save code. |
| 93 | final var layers = MainApplication.getLayerManager().getLayersOfType(AbstractOsmDataLayer.class) |
| 94 | .stream().filter(layer -> layerString.equals(layer.getName())).toList(); |
| 95 | for (var layer : layers) { |
| 96 | final var primitive = layer.getDataSet().getPrimitiveById(primitiveId); |
| 97 | if (primitive != null) { |
| 98 | item = new TodoListItem(layer, primitive); |
| 99 | } |
| 100 | } |
| 101 | if (item == null && object.containsKey("centroid")) { |
| 102 | final var centroid = object.getJsonObject("centroid"); |
| 103 | final ILatLon ll = new LatLon(centroid.getJsonNumber("lat").doubleValue(), centroid.getJsonNumber("lon").doubleValue()); |
| 104 | for (var layer : layers) { |
| 105 | final var bbox = new BBox(ll); |
| 106 | final var prim = switch (primitiveId.getType()) { |
| 107 | case NODE -> { |
| 108 | for (INode node : layer.getDataSet().searchNodes(bbox)) { |
| 109 | if (node.isNew() && node.equalsEpsilon(ll)) { |
| 110 | yield node; |
| 111 | } |
| 112 | } |
| 113 | yield null; |
| 114 | } |
| 115 | case CLOSEDWAY, WAY -> { |
| 116 | for (IWay<?> way : layer.getDataSet().searchWays(bbox)) { |
| 117 | if (way.isNew() && way.getBBox().getCenter().equalsEpsilon(ll)) { |
| 118 | yield way; |
| 119 | } |
| 120 | } |
| 121 | yield null; |
| 122 | } |
| 123 | case MULTIPOLYGON, RELATION -> { |
| 124 | for (IRelation<?> relation : layer.getDataSet().searchRelations(bbox)) { |
| 125 | if (relation.isNew() && relation.getBBox().getCenter().equalsEpsilon(ll)) { |
| 126 | yield relation; |
| 127 | } |
| 128 | } |
| 129 | yield null; |
| 130 | } |
| 131 | }; |
| 132 | if (prim != null) { |
| 133 | item = new TodoListItem(layer, prim); |
| 134 | } |
| 135 | } |
| 136 | } |
| 137 | } |
| 138 | if (item == null) { |
| 139 | return null; |
| 140 | } |
| 141 | return new ParsedTodoListItem(item, done); |
| 142 | } |
| 143 | |
| 144 | @Override |
| 145 | public boolean requiresSaving() { |
| 146 | final var todo = MainApplication.getMap().getToggleDialog(TodoDialog.class); |
| 147 | return !todo.getItems().isEmpty(); |
| 148 | } |
| 149 | |
| 150 | @Override |
| 151 | public String getFileName() { |
| 152 | return "todo.json"; |
| 153 | } |
| 154 | } |