"""
 This module houses the GEOS ctypes prototype functions for the
 unary and binary predicate operations on geometries.
"""
from ctypes import c_byte, c_char_p, c_double

from django.contrib.gis.geos.libgeos import GEOM_PTR, GEOSFuncFactory
from django.contrib.gis.geos.prototypes.errcheck import check_predicate


# ## Binary & unary predicate factories ##
class UnaryPredicate(GEOSFuncFactory):
    "For GEOS unary predicate functions."
    argtypes = [GEOM_PTR]
    restype = c_byte
    errcheck = staticmethod(check_predicate)


class BinaryPredicate(UnaryPredicate):
    "For GEOS binary predicate functions."
    argtypes = [GEOM_PTR, GEOM_PTR]


# ## Unary Predicates ##
geos_hasz = UnaryPredicate("GEOSHasZ")
geos_isclosed = UnaryPredicate("GEOSisClosed")
geos_isempty = UnaryPredicate("GEOSisEmpty")
geos_isring = UnaryPredicate("GEOSisRing")
geos_issimple = UnaryPredicate("GEOSisSimple")
geos_isvalid = UnaryPredicate("GEOSisValid")

# ## Binary Predicates ##
geos_contains = BinaryPredicate("GEOSContains")
geos_covers = BinaryPredicate("GEOSCovers")
geos_crosses = BinaryPredicate("GEOSCrosses")
geos_disjoint = BinaryPredicate("GEOSDisjoint")
geos_equals = BinaryPredicate("GEOSEquals")
geos_equalsexact = BinaryPredicate(
    "GEOSEqualsExact", argtypes=[GEOM_PTR, GEOM_PTR, c_double]
)
geos_intersects = BinaryPredicate("GEOSIntersects")
geos_overlaps = BinaryPredicate("GEOSOverlaps")
geos_relatepattern = BinaryPredicate(
    "GEOSRelatePattern", argtypes=[GEOM_PTR, GEOM_PTR, c_char_p]
)
geos_touches = BinaryPredicate("GEOSTouches")
geos_within = BinaryPredicate("GEOSWithin")