"""Test t.unregister

(C) 2014 by the GRASS Development Team
This program is free software under the GNU General Public
License (>=v2). Read the file COPYING that comes with GRASS
for details.

:authors: Soeren Gebbert
"""
import os
import grass.pygrass.modules as pymod
import grass.temporal as tgis
from grass.gunittest.case import TestCase
from grass.gunittest.gmodules import SimpleModule

class TestUnregister(TestCase):

    @classmethod
    def setUpClass(cls):
        """Initiate the temporal GIS and set the region
        """
        tgis.init()
        cls.use_temp_region()
        cls.runModule("g.gisenv",  set="TGIS_USE_CURRENT_MAPSET=1")
        cls.runModule("g.region",  s=0,  n=80,  w=0,  e=120,  b=0,  
                      t=50,  res=10,  res3=10)

    @classmethod
    def tearDownClass(cls):
        """Remove the temporary region
        """
        cls.del_temp_region()

    def setUp(self):
        """Create input data
        """
        self.runModule("r.mapcalc", expression="a1 = 100",  overwrite=True)
        self.runModule("r.mapcalc", expression="a2 = 200",  overwrite=True)
        self.runModule("r.mapcalc", expression="a3 = 300",  overwrite=True)
        self.runModule("r.mapcalc", expression="a4 = 400",  overwrite=True)
        self.runModule("r.mapcalc", expression="a5 = 500",  overwrite=True)
        self.runModule("r.mapcalc", expression="a6 = 600",  overwrite=True)

        self.runModule("t.create",  type="strds",  temporaltype="absolute",  
                                    output="A",  title="A test",  
                                    description="A test",  overwrite=True)
        self.runModule("t.register", flags="i",  type="raster",  input="A",  
                                     maps="a1,a2,a3,a4,a5,a6",
                                     start="2001-01-01", increment="3 months",  
                                     overwrite=True)

        self.runModule("t.create",  type="strds",  temporaltype="absolute",  
                                    output="B",  title="B test",  
                                    description="B test",  overwrite=True)
        self.runModule("t.register", flags="i",  type="raster",  input="B",  
                                     maps="a1,a2,a3,a4,a5,a6",
                                     start="2001-01-01", increment="3 months",  
                                     overwrite=True)

    def tearDown(self):
        """Remove generated data"""
        self.runModule("g.remove", flags='f', type="raster",  
                                   name="a1,a2,a3,a4,a5,a6")

    def test_1(self):
        """Perform several unregistration operations"""
        
        # Prepare some strings for the tests
        new_line = os.linesep
        a = ["a1","a2","a3","a4","a5","a6"]
        al = new_line.join(a)
        al += new_line

        a123 =  new_line.join(a[:3])
        a123 += new_line
        
        a456 =  new_line.join(a[3:])
        a456 += new_line


        # Unregister maps a1, a2 and a3 from STRDS A
        self.assertModule("t.unregister",  input="A",  maps="a1,a2,a3")

        lister = SimpleModule("t.rast.list", input="A", columns="name", 
                              flags="u")
        self.runModule(lister)
        self.assertEqual(a456, lister.outputs.stdout)


        # Check if all maps are present in STRDS B
        lister = SimpleModule("t.rast.list", input="B", columns="name", 
                              flags="u")
        self.runModule(lister)
        self.assertEqual(al, lister.outputs.stdout)


        # Check if maps a1, a2 and a3 are still present in the temporal database
        lister = SimpleModule("t.list", type="raster", columns="name", 
                              where='mapset = "%s" AND (name = "a1" OR name = "a2" OR name = "a3")'%(tgis.get_current_mapset()))
        self.runModule(lister)
        self.assertEqual(a123, lister.outputs.stdout)


        # Unregister maps a1, a2 and a3 from the temporal database
        self.assertModule("t.unregister",  maps="a1,a2,a3")

        lister = SimpleModule("t.list", type="raster", columns="name", 
                              where='mapset = "%s" AND (name = "a1" OR name = "a2" OR name = "a3")'%(tgis.get_current_mapset()))
        self.runModule(lister)
        self.assertEqual("", lister.outputs.stdout)


        # Check that masp a1, a2 and a3 are not present in STRDS B
        lister = SimpleModule("t.rast.list", input="B", columns="name", 
                              flags="u")
        self.runModule(lister)
        self.assertEqual(a456, lister.outputs.stdout)


        # Remove STRDS A and B and check if maps a4, a5 and a6 are still in the temporal database
        self.assertModule("t.remove",  type="strds", inputs="A,B")

        lister = SimpleModule("t.list", type="raster", columns="name", 
                              where='mapset = "%s" AND (name = "a4" OR name = "a5" OR name = "a6")'%(tgis.get_current_mapset()))
        self.runModule(lister)
        self.assertEqual(a456, lister.outputs.stdout)
        
        
        # Unregister maps a4, a5 and a6 from the temporal database
        self.assertModule("t.unregister",  maps="a4,a5,a6")

        lister = SimpleModule("t.list", type="raster", columns="name", 
                              where='mapset = "%s" AND (name = "a4" OR name = "a5" OR name = "a6")'%(tgis.get_current_mapset()))
        self.runModule(lister)
        self.assertEqual("", lister.outputs.stdout)

if __name__ == '__main__':
    from grass.gunittest.main import test
    test()
