{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "00982ea4-b630-4233-b6df-354af3498ed2",
   "metadata": {},
   "outputs": [],
   "source": []
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "e84709ab-1b47-49ee-8cbd-8aa69744b6c3",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "application/vnd.jupyter.widget-view+json": {
       "model_id": "a4103c257b7b4691a0a86d817390e9ca",
       "version_major": 2,
       "version_minor": 0
      },
      "text/plain": [
       "FloatProgress(value=0.0, layout=Layout(width='auto'), style=ProgressStyle(bar_color='black'))"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "data": {
      "application/vnd.jupyter.widget-view+json": {
       "model_id": "31245f0a73634185b297464775ba4c13",
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       "version_minor": 0
      },
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       "FloatProgress(value=0.0, layout=Layout(width='auto'), style=ProgressStyle(bar_color='black'))"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "import ibis\n",
    "from ibis import _\n",
    "conn = ibis.duckdb.connect(\"tmp2\", extensions=[\"spatial\"])\n",
    "\n",
    "tbl = (\n",
    "    conn.read_parquet(\"https://data.source.coop/cboettig/ca30x30/ca_areas.parquet\")\n",
    "    .cast({\"SHAPE\": \"geometry\"})\n",
    "    .rename(geom = \"SHAPE\", gid = \"OBJECTID\")\n",
    "   # .filter(_.UNIT_NAME == \"Angeles National Forest\")\n",
    "    .filter(_.reGAP < 3) \n",
    "    #.mutate(geom = _.geom.convert(\"epsg:3310\",\"epsg:4326\"))\n",
    ")\n",
    "\n",
    "conn.create_table(\"t1\", tbl.filter(_.Release_Year == 2024))\n",
    "conn.create_table(\"t2\", tbl.filter(_.Release_Year == 2023))\n",
    "\n",
    "conn.disconnect()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "121c3cad-680c-4f3a-9075-638711ea1634",
   "metadata": {},
   "outputs": [],
   "source": [
    "%%time\n",
    "import duckdb\n",
    "db = duckdb.connect(\"tmp2\")\n",
    "db.install_extension(\"spatial\")\n",
    "db.load_extension(\"spatial\")\n",
    "\n",
    "db.sql('''\n",
    "CREATE OR REPLACE TABLE diff AS (\n",
    "with temp as \n",
    "(\n",
    "  select   b.gid, st_union_agg(a.geom) as geom\n",
    "  from     t1 b join t2 a on st_intersects(a.geom, b.geom)\n",
    "  group by b.gid\n",
    ") \n",
    "select st_difference(b.geom,coalesce(t.geom, 'GEOMETRYCOLLECTION EMPTY'::geometry)) as geom\n",
    "from t1 b left join temp t on b.gid = t.gid\n",
    ")\n",
    "''')\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "e0a31bd7-4b67-46ad-88c4-7c17d820d66b",
   "metadata": {},
   "outputs": [],
   "source": [
    "#db.table(\"diff\").to_parquet(\"diff.parquet\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "28a66c8b-89fb-4972-9ff5-ee9bfdf148e9",
   "metadata": {},
   "outputs": [],
   "source": [
    "conn = ibis.duckdb.connect(\"tmp\", extensions=[\"spatial\"])\n",
    "gdf = conn.table(\"diff\").mutate(geom = _.geom.convert(\"epsg:3310\",\"epsg:4326\")).execute()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "308dc665-1323-4e9b-bc2d-69201c325c4b",
   "metadata": {},
   "outputs": [],
   "source": [
    "import leafmap.maplibregl as leafmap\n",
    "m = leafmap.Map()\n",
    "m.add_gdf(gdf)\n",
    "m\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "775abaca-f21a-4cd8-ad7d-0310cc6b33b6",
   "metadata": {},
   "outputs": [],
   "source": [
    "\"TO 'new2024.geojson' WITH (FORMAT GDAL, DRIVER 'GeoJSON', LAYER_CREATION_OPTIONS 'WRITE_BBOX=YES')\""
   ]
  }
 ],
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