feat: move bounds, center, minzoom, maxzoom

move into metadata

Signed-off-by: Andrew Calcutt <acalcutt@techidiots.net>

src/serve_data.js

@@ -157,8 +157,6 @@ export const serve_data = {
 
       tileJSON['name'] = id;
       tileJSON['format'] = 'pbf';
-      tileJSON['bounds'] = info.bounds;
-      tileJSON['center'] = info.center;
       Object.assign(tileJSON, metadata);
 
       tileJSON['tilejson'] = '2.0.0';

src/serve_rendered.js

@@ -6,8 +6,8 @@ import path from 'path';
 import url from 'url';
 import util from 'util';
 import zlib from 'zlib';
-import sharp from 'sharp'; // sharp has to be required before node-canvas. see https://github.com/lovell/sharp/issues/371
 import { createCanvas, Image } from 'canvas';
+import sharp from 'sharp'; // sharp has to be required before node-canvas. see https://github.com/lovell/sharp/issues/371
 import clone from 'clone';
 import Color from 'color';
 import express from 'express';
@@ -18,7 +18,7 @@ import MBTiles from '@mapbox/mbtiles';
 import polyline from '@mapbox/polyline';
 import proj4 from 'proj4';
 import request from 'request';
-import { getFontsPbf, getTileUrls, fixTileJSONCenter } from './utils.js';
+import { getFontsPbf, getTileUrls, fixTileJSONCenter, GetPMtilesInfo } from './utils.js';
 
 const FLOAT_PATTERN = '[+-]?(?:\\d+|\\d+.?\\d+)';
 const PATH_PATTERN =
@@ -1205,7 +1205,7 @@ export const serve_rendered = {
 
     return Promise.all([fontListingPromise]).then(() => app);
   },
-  add: (options, repo, params, id, publicUrl, dataResolver) => {
+  add: async (options, repo, params, id, publicUrl, dataResolver) => {
     const map = {
       renderers: [],
       renderers_static: [],
@@ -1438,6 +1438,43 @@ export const serve_rendered = {
           }
         }
 
+        const mbtilesFileStats = fs.statSync(mbtilesFile);
+        if (!mbtilesFileStats.isFile() || mbtilesFileStats.size === 0) {
+          throw Error(`Not valid MBTiles file: ${mbtilesFile}`);
+        }
+        const extension = mbtilesFile.split('.').pop().toLowerCase();
+        if (extension === 'pmtiles') {
+          const info = await GetPMtilesInfo(mbtilesFile);
+          const metadata = info.metadata;
+
+          if (!repoobj.dataProjWGStoInternalWGS && metadata.proj4) {
+            // how to do this for multiple sources with different proj4 defs?
+            const to3857 = proj4('EPSG:3857');
+            const toDataProj = proj4(metadata.proj4);
+            repoobj.dataProjWGStoInternalWGS = (xy) => to3857.inverse(toDataProj.forward(xy));
+          }
+
+          const type = source.type;
+          Object.assign(source, metadata);
+          source.type = type;
+          source.tiles = [
+            // meta url which will be detected when requested
+            `mbtiles://${name}/{z}/{x}/{y}.${metadata.format || 'pbf'}`,
+          ];
+          delete source.scheme;
+          console.log(source);
+
+          if (!attributionOverride &&
+            source.attribution &&
+            source.attribution.length > 0) {
+            if (!tileJSON.attribution.includes(source.attribution)) {
+              if (tileJSON.attribution.length > 0) {
+                tileJSON.attribution += ' | ';
+              }
+              tileJSON.attribution += source.attribution;
+            }
+          }
+        } else {
           queue.push(
             new Promise((resolve, reject) => {
               mbtilesFile = path.resolve(options.paths.mbtiles, mbtilesFile);
@@ -1489,7 +1526,8 @@ export const serve_rendered = {
                 });
               });
             }),
-        );
+          )
+        }
       }
     }
 

src/utils.js

@@ -227,9 +227,6 @@ const PMTilesLocalSource = class {
   }
 };
 
-
-
-
 export const GetPMtilesInfo = async (pmtilesFile) => {
   var buffer = await ReadBytes(pmtilesFile, 0, 16384)
   const headerBuf = BufferToArrayBuffer(buffer);
@@ -256,8 +253,11 @@ export const GetPMtilesInfo = async (pmtilesFile) => {
   const dec = new TextDecoder("utf-8");
   var metadata = JSON.parse(dec.decode(decompressed));
 
-
   const bounds = [header.minLat, header.minLon, header.maxLat, header.maxLon]
   const center = [header.centerLon, header.centerLat, header.centerLat]
-  return { header: header, metadata: metadata, bounds: bounds, center: center };
+  metadata['bounds'] = header.bounds;
+  metadata['center'] = header.center;
+  metadata['minzoom'] = header.minZoom;
+  metadata['maxzoom'] = header.maxZoom;
+  return { header: header, metadata: metadata };
 }