add Windows install info

docs/index.md

@@ -1,4 +1,4 @@
-# uMap developper documentation
+# uMap developer documentation
 
 *This documentation is intended for people aiming to install and configure uMap.
 If you are looking for user documentation, have a look at [the OSM wiki page](http://wiki.openstreetmap.org/wiki/UMap#Tutorials).*

docs/install.md

@@ -2,6 +2,8 @@
 
 *Note: for Ubuntu follow procedure [Ubuntu from scratch](ubuntu.md)*
 
+*Note: for a Windows installation follow procedure [Installing on Windows](install_windows.md)*
+
 Create a geo aware database. See [Geodjango doc](https://docs.djangoproject.com/en/dev/ref/contrib/gis/install/) for backend installation.
 
 Create a virtual environment
@@ -23,7 +25,7 @@ Reference it as env var:
     export UMAP_SETTINGS=`pwd`/local.py
 
 
-Add database connexion informations in `local.py`, for example
+Add database connection information in `local.py`, for example
 
     DATABASES = {
         'default': {
@@ -77,7 +79,7 @@ Start the server
 
 ## Search
 
-UMap uses Postgresql tsvector for searching. In case your database is big, you
+UMap uses PostgreSQL tsvector for searching. In case your database is big, you
 may want to add an index. For that, you should do so:
 
     CREATE EXTENSION unaccent;
@@ -89,6 +91,6 @@ may want to add an index. For that, you should do so:
 
 ## Optimisations
 
-To speed up uMap homepage rendering on a large instance, the following index can be added too (make sure you set the center to your default instance map center):
+To speed up uMap homepage rendering on a large instance, the following index can be added tas well (make sure you set the center to your default instance map center):
 
     CREATE INDEX leaflet_storage_map_optim ON leaflet_storage_map (modified_at) WHERE ("leaflet_storage_map"."share_status" = 1 AND ST_Distance("leaflet_storage_map"."center", ST_GeomFromEWKT('SRID=4326;POINT(2 51)')) > 1000.0);

docs/install_windows.md

@@ -0,0 +1,137 @@
+# Installing uMap on Windows
+
+The **good news** is that it is possible to run uMap server on Windows.  However, it is recommended using uMap on a 
+Linux distribution as it will be easier to install, modify, and deploy.  While the following steps have been tested on
+Windows 7, they may work for other versions of Windows.
+
+
+## 1. Prepare the Database 
+
+This assumes you've installed PostgreSQL.
+- Create a database called "umap"
+- Install PostGIS extension in it
+
+##2. Create a directory and a Python virtual environment 
+
+Open a Windows command window, and cd to a directory of your choice.  You need to create a sub-directory but the name is
+up to you (it doesn't need to be called "production"):
+```
+mkdir production
+cd production
+virtualenv venv
+venv\Scripts\activate.bat
+```
+
+##3. Install GDAL for Python
+
+It is really difficult to install GDAL the "standard" way since it requires compiling GDAL.  Instead download an already 
+compiled pip-compatible wheel package file from 
+[Unofficial Windows Binaries for Python Extension Packages](https://www.lfd.uci.edu/~gohlke/pythonlibs/#gdal).  Note 
+that cp38 refers to the Python version you are using, so make sure you select the one that matches your Python version
+for download.
+
+In the command window, install the downloaded wheel package:
+`pip install GDAL-3.0.4-cp38-cp38-win_amd64.whl`
+
+You can test the install from the Python command line.  From the Windows command window invoke Python:
+```
+python
+```
+then enter some Python commands:
+```python
+>>> import gdal
+>>> print(int(gdal.VersionInfo('VERSION_NUM')))
+>>> exit()
+```
+
+##4. Install uMap
+
+In the Windows command window:
+```
+mkdir static
+mkdir data
+pip install umap-project
+```
+***Windows Work-Around 1***
+
+Setting the UMAP_SETTINGS environment variable doesn't seem to work on Windows, so put the file in umap's fall-back
+location of \etc\umap\umap.conf :
+```
+mkdir \etc\umap
+wget https://raw.githubusercontent.com/umap-project/umap/master/umap/settings/local.py.sample -O \etc\umap\umap.conf
+```
+Edit the umap.conf file:
+
+***Windows Work-Around 2***
+
+It might be possible to modify django's libgdal.py (umap installed django as one of its dependencies) to detect the 
+installed GDAL, but until then you can explicitly state the required paths.
+
+Add the GDAL paths somewhere near the top of the umap.conf file (make sure the last part, "gdal300", is the name of the 
+GDAL DLL in its package dir):
+```python
+GDAL_LIBRARY_PATH = r'C:\temp\production\venv\Lib\site-packages\osgeo\gdal300'
+GEOS_LIBRARY_PATH = r'C:\temp\production\venv\Lib\site-packages\osgeo\geos_c'
+PROJ_LIB =          r'C:\temp\production\venv\Lib\site-packages\osgeo\data\proj'
+```
+And while you're editing umap.conf, add the needed parameters to the DATABASES default object :
+```python
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.contrib.gis.db.backends.postgis',
+        'NAME': 'umap',
+        'USER': 'postgres',
+        'PASSWORD': 'postgres',
+        'HOST': 'localhost',
+        'PORT': '5432'
+    }
+}
+```
+And set umap's paths to where you've created the directories:
+```python
+STATIC_ROOT = '/temp/production/static'
+MEDIA_ROOT  = '/temp/production/data'
+```
+Now that the minimal configuration is done, you can do the django-ish portion of the umap install.  In the Windows 
+command window:
+```
+umap migrate
+umap collectstatic
+umap createsuperuser
+```
+
+***Windows Work-Around 3***
+
+Strangely, having the installed `umap.exe` is not enough.   Some script tries to execute "umap" without the ".exe" 
+extension, so here's a hack to make that work:
+```
+copy venv\scripts\umap.exe venv\scripts\umap
+```
+
+##5. Run umap server
+In the Windows command window:
+```
+umap runserver 127.0.0.1:8000
+```
+You should now be able to open a browser and go to http://127.0.0.1:8000
+
+If  you add some features to a new map and try to save them, you will likely see an error in the Windows command window
+running the umap server.   This error is a Python error related to doing 
+`os.remove(name)` on Windows:
+```
+  File "c:\temp\test\venv\lib\site-packages\django\core\files\storage.py", line 303, in delete
+    os.remove(name)
+PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: 
+'C:\\temp\\production\\data\\datalayer\\1\\1\\layer-1.geojson'
+```
+
+***Windows Work-Around 4***
+
+Edit `test\venv\lib\site-packages\django\core\files\storage.py`, and comment out lines 302 and 303:
+```python
+#            else:
+#                os.remove(name)
+```
+Now adding features and saving should work.  _Now here's the weird part._   Edit `storage.py` to restore it to it's 
+original state by removing the comment characters you put in.  Save the changes, do some more feature editing and 
+saving in your browser.  It still works!  This may be due to file/directory locking by Windows.