DB_NAME=census
DB_USER=postgres
TIGER_SRID=4269

# URLs for the TIGER/Line block-level shapefiles.
TIGER_ROOT=http://www2.census.gov/geo/tiger/TIGER2009
MD_BLOCKS_URL=$(TIGER_ROOT)/24_MARYLAND/tl_2009_24_tabblock00.zip
VA_BLOCKS_URL=$(TIGER_ROOT)/51_VIRGINIA/tl_2009_51_tabblock00.zip
PA_BLOCKS_URL=$(TIGER_ROOT)/42_PENNSYLVANIA/tl_2009_42_tabblock00.zip
NY_BLOCKS_URL=$(TIGER_ROOT)/36_NEW_YORK/tl_2009_36_tabblock00.zip

# Starting with PostGIS 1.4.0, these paths are calculated at install
# time using the pg_config utility. Rather than try to guess where
# PostGIS will wind up installed, we can just check the output of
# pg_config ourselves.
PG_BINDIR=`pg_config --bindir`
PG_SHAREDIR=`pg_config --sharedir`

# Necessary to run test/data without prerequisites.
#
.PHONY : test data


# The default task, since it comes first in the list.
#
all: clean test


test:
	./bin/run_tests


# Remove byte-compiled python code.
#
clean:
	find ./ -name '*.pyc' -print0 | xargs -0 rm -f


# Download the shapefiles from Tiger if they don't already exist.
# For now, we're only dealing with the Census 2000 Maryland Block
# data, so the filenames are hard-coded. Easy enough to change.
#
data: tiger_blocks

tiger_blocks: md_blocks va_blocks pa_blocks ny_blocks

md_blocks:
	mkdir -p data/census2000/maryland/block
	if [ ! -f data/census2000/maryland/block/tl_2009_24_tabblock00.shp ]; \
	then 								      \
		wget -O mdblocks.zip $(MD_BLOCKS_URL);			      \
		unzip mdblocks.zip -d ./data/census2000/maryland/block;	      \
		rm mdblocks.zip; 					      \
	fi;

va_blocks:
	mkdir -p data/census2000/virginia/block
	if [ ! -f data/census2000/virginia/block/tl_2009_51_tabblock00.shp ]; \
	then 								      \
		wget -O vablocks.zip $(VA_BLOCKS_URL); 			      \
		unzip vablocks.zip -d ./data/census2000/virginia/block;       \
		rm vablocks.zip;					      \
	fi;

pa_blocks:
	mkdir -p data/census2000/pennsylvania/block
	if [ ! -f data/census2000/pennsylvania/block/tl_2009_42_tabblock00.shp ]; \
	then 									  \
		wget -O pablocks.zip $(PA_BLOCKS_URL); 				  \
		unzip pablocks.zip -d ./data/census2000/pennsylvania/block; 	  \
		rm pablocks.zip; 						  \
	fi;

ny_blocks:
	mkdir -p data/census2000/new_york/block
	if [ ! -f data/census2000/new_york/block/tl_2009_36_tabblock00.shp ]; \
	then								      \
		wget -O nyblocks.zip $(NY_BLOCKS_URL); 			      \
		unzip nyblocks.zip -d ./data/census2000/new_york/block;       \
		rm nyblocks.zip; 					      \
	fi;


# This task does a couple of things. First, it drops and re-creates
# the DB_NAME database (or schema, whatever). Then, it adds PL/pgSQL
# support to the database.
#
# At that point, we import the two PostGIS files, postgis.sql and
# spatial_ref_sys.sql. The postgis.sql file contains the geometry
# functions, while spatial_ref_sys.sql contains a table of SRIDs, and
# their associated properties. PostGIS requires both.
#
# Then, we import the Tiger data using shp2pgsql. The shapefiles
# should exist, since this task depends on the "data" task, which
# downloads said shapefiles.
#
# Finally, we create the table for the demographic data (obtained from
# the geographic header records), and populate that table with the output
# of the sf1blocks2sql script.
#
db: data
	# Ignore the result of dropdb when it fails.
	dropdb -U $(DB_USER) $(DB_NAME) || true
	createdb -U $(DB_USER) $(DB_NAME)
	createlang -U $(DB_USER) plpgsql $(DB_NAME)

	psql -d $(DB_NAME) \
             -U $(DB_USER) \
             -f $(PG_SHAREDIR)/contrib/postgis.sql

	psql -d $(DB_NAME) \
             -U $(DB_USER) \
             -f $(PG_SHAREDIR)/contrib/spatial_ref_sys.sql


# Maryland Blocks

	$(PG_BINDIR)/shp2pgsql                                              \
		  -I							    \
		  -s $(TIGER_SRID)					    \
		  -D							    \
	          data/census2000/maryland/block/tl_2009_24_tabblock00.shp  \
	          tiger_blocks                                              \
		  | psql -U $(DB_USER) -d $(DB_NAME)


# Virginia Blocks

	$(PG_BINDIR)/shp2pgsql -a                                           \
		  -I							    \
		  -s $(TIGER_SRID)					    \
		  -D							    \
	          data/census2000/virginia/block/tl_2009_51_tabblock00.shp  \
	          tiger_blocks                                              \
		  | psql -U $(DB_USER) -d $(DB_NAME)


# Pennsylvania Blocks

	$(PG_BINDIR)/shp2pgsql -a                                               \
		  -I								\
		  -s $(TIGER_SRID)						\
		  -D							        \
	          data/census2000/pennsylvania/block/tl_2009_42_tabblock00.shp  \
	          tiger_blocks                                                  \
                  | psql -U $(DB_USER) -d $(DB_NAME)


# New York Blocks

	$(PG_BINDIR)/shp2pgsql -a                                           \
		  -I							    \
		  -s $(TIGER_SRID)                                          \
		  -D							    \
	          data/census2000/new_york/block/tl_2009_36_tabblock00.shp  \
	          tiger_blocks                                              \
                  | psql -U $(DB_USER) -d $(DB_NAME)


	psql -d $(DB_NAME) \
             -U $(DB_USER) \
             -f sql/create-sf1_blocks-table.sql

	bin/sf1blocks2sql src/Tests/Fixtures/SummaryFile1/mdgeo.uf1 sf1_blocks \
                          | psql -U postgres -d $(DB_NAME) > /dev/null