Start of creating kmz file, with entrance photos and links to expo.survex.com

core/views/caves.py

@@ -1,10 +1,15 @@
 import os
 import re
 import subprocess
+import tempfile
+import zipfile
+import urllib
+from bs4 import BeautifulSoup
+
 from pathlib import Path
 
 from django.core.exceptions import MultipleObjectsReturned, ObjectDoesNotExist
-from django.http import HttpResponse, HttpResponseNotFound, HttpResponseRedirect
+from django.http import HttpResponse, HttpResponseNotFound, HttpResponseRedirect, FileResponse
 from django.shortcuts import render
 from django.urls import NoReverseMatch, reverse
 
@@ -17,6 +22,8 @@ from troggle.core.views import expo
 from troggle.settings import CAVEDESCRIPTIONS, ENTRANCEDESCRIPTIONS
 from troggle.parsers.caves import read_cave, read_entrance
 
+from django.template import loader 
+from django.utils.safestring import mark_safe
 
 from .auth import login_required_if_public
 
@@ -628,3 +635,45 @@ def expo_kml(request):
                 },
                 content_type = "application/vnd.google-earth.kml+xml"
             )
+
+def expo_kmz(request):
+    notablecaves = set(getnotablecaves())
+    #Zip file written to a file, to save this function using too much memory
+    with tempfile.TemporaryDirectory() as tmpdirname:
+        zippath = os.path.join(tmpdirname, 'expo.kmz')
+        with zipfile.ZipFile(zippath, 'w', compression=zipfile.ZIP_DEFLATED) as myzip:
+            entrances = []
+            for e in Entrance.objects.all():
+                html = loader.get_template("entrance_html.kml").render({"entrance": e}, request)
+                soup=BeautifulSoup(html)
+                for img in soup.find_all("img"):
+                    #src_orig = img['src']
+                    src = urllib.parse.urljoin(e.cavelist()[0].url.rpartition("/")[0] + "/", img['src'])
+                    img['src'] = src
+                    p = os.path.join(settings.EXPOWEB, src)
+                    #print(e.cavelist()[0].url, e.cavelist()[0].url.rpartition("/")[0] + "/", src_orig, p)
+                    if os.path.isfile(p):
+                        myzip.write(p, src)
+                for a in soup.find_all("a"):
+                    try:
+                        ao = a['href']
+                        aa = urllib.parse.urljoin(e.cavelist()[0].url.rpartition("/")[0] + "/", ao)
+                        a['href'] = urllib.parse.urljoin("https://expo.survex.com/", aa)
+                        print(e.cavelist()[0].url.rpartition("/")[0] + "/", ao, a['href'])
+                    except:
+                        pass
+                html = mark_safe(soup.prettify("utf-8").decode("utf-8"))
+		
+                size = {True: "large", False:"small"}[bool(set(e.cavelist()) & notablecaves)]
+		
+                entrances.append(loader.get_template("entrance.kml").render({"entrance": e, "html": html, "size": size}, request))
+
+            s = loader.get_template("expo.kml").render({"entrances": entrances}, request)
+            myzip.writestr("expo.kml", s)
+            for f in os.listdir(settings.KMZ_ICONS_PATH):
+                p = os.path.join(settings.KMZ_ICONS_PATH, f)
+                if os.path.isfile(p):
+                    myzip.write(p, os.path.join("icons", f))
+        return FileResponse(open(zippath, 'rb'), content_type="application/vnd.google-earth.kmz .kmz")
+
+