def grid_changed():
""" REST method to determine whether the grid has changed """
# Compare the original grid loaded to its current values.
# Return True if they are different, False if they are the same.
jsonstr_initial_sha = session.get('grid.initial.sha', sha256(None))
jsonstr_current_sha = sha256(session.get('grid', None))
changed = not (jsonstr_current_sha == jsonstr_initial_sha)
obj = {"changed": changed}
# Send this back to the client in JSON
resp = make_response(json.dumps(obj), HTTPStatus.OK)
resp.headers['Content-Type'] = "application/json"
return resp
def puzzle_new():
""" Creates a new puzzle and redirects to puzzle screen """
# Get the chosen grid name from the query parameters
gridname = request.args.get('gridname')
# Open the corresponding file and read its contents as json
# and recreate the grid from it
userid = 1 # TODO replace hard-coded user ID
query = DBGrid.query.filter_by(userid=userid, gridname=gridname)
jsonstr = query.first().jsonstr
grid = Grid.from_json(jsonstr)
# Now pass this grid to the Puzzle() constructor
puzzle = Puzzle(grid)
# Save puzzle in the session
jsonstr = puzzle.to_json()
session['puzzle'] = jsonstr
session['puzzle.initial.sha'] = sha256(jsonstr)
# Remove any leftover puzzle name in the session
session.pop('puzzlename', None)
return redirect(url_for('uipuzzle.puzzle_screen'))
def puzzle_changed():
""" REST method that returns whether the puzzle has changed since it was opened """
current_puzzle_json = session.get('puzzle', None)
if current_puzzle_json:
current_puzzle = Puzzle.from_json(current_puzzle_json)
jsonstr_initial_sha = session.get('puzzle.initial.sha', sha256(None))
jsonstr_current_sha = sha256(current_puzzle.to_json())
changed = not (jsonstr_current_sha == jsonstr_initial_sha)
else:
changed = False
obj = {"changed": changed}
# Send this back to the client in JSON
resp = make_response(json.dumps(obj), HTTPStatus.OK)
resp.headers['Content-Type'] = "application/json"
return resp
def puzzle_save_common(puzzlename):
""" Common method used by both puzzle_save and puzzle_save_as """
# Recreate the puzzle from the JSON in the session
# and validate it
jsonstr = session.get('puzzle', None)
puzzle = Puzzle.from_json(jsonstr)
jsonstr = puzzle.to_json()
ok, messages = puzzle.validate()
if not ok:
flash("Puzzle not saved")
for message_type in messages:
message_list = messages[message_type]
if len(message_list) > 0:
flash(f"*** {message_type} ***")
for message in message_list:
flash(" " + message)
else:
# Save the file
userid = 1 # TODO Replace hard coded user id
query = DBPuzzle.query.filter_by(userid=userid, puzzlename=puzzlename)
if not query.all():
# No puzzle in the database. This is an insert
logging.debug(f"Inserting puzzle {puzzlename} into puzzles table")
created = modified = datetime.now().isoformat()
newpuzzle = DBPuzzle(userid=userid,
puzzlename=puzzlename,
created=created,
modified=modified,
jsonstr=jsonstr)
db.session.add(newpuzzle)
db.session.commit()
else:
# Existing puzzle. This is an update
logging.debug(f"Updating puzzle {puzzlename} in puzzles table")
oldpuzzle = query.first()
oldpuzzle.modified = datetime.now().isoformat()
oldpuzzle.jsonstr = jsonstr
db.session.commit()
# Send message about the save
flash(f"Puzzle saved as {puzzlename}")
# Store the sha of the saved version of the puzzle
# in the session as 'puzzle.initial.sha' so that we can
# detect whether it has been changed since it was last saved
session['puzzle.initial.sha'] = sha256(puzzle.to_json())
# Show the puzzle screen
return redirect(url_for('uipuzzle.puzzle_screen'))
def grid_save_common(gridname):
""" Common method used by both grid_save and grid_save_as """
# Recreate the grid from the JSON in the session
# and validate it
jsonstr = session.get('grid', None)
grid = Grid.from_json(jsonstr)
ok, messages = grid.validate()
if not ok:
flash("Grid not saved")
for message_type in messages:
message_list = messages[message_type]
if len(message_list) > 0:
flash(f"*** {message_type} ***")
for message in message_list:
flash(" " + message)
else:
# Save the file
userid = 1 # TODO Replace hard coded user id
query = DBGrid.query.filter_by(userid=userid, gridname=gridname)
if not query.all():
# No grid in the database. This is an insert
logging.debug(f"Inserting grid '{gridname}' into grids table")
created = modified = datetime.now().isoformat()
newgrid = DBGrid(userid=userid,
gridname=gridname,
created=created,
modified=modified,
jsonstr=jsonstr)
db.session.add(newgrid)
db.session.commit()
else:
# There is a grid. This is an update
logging.debug(f"Updating grid '{gridname}' in grids table")
oldgrid = query.first()
oldgrid.modified = datetime.now().isoformat()
oldgrid.jsonstr = jsonstr
db.session.commit()
# Send message about save
flash(f"Grid saved as {gridname}")
# Store the sha256 of the saved version of the grid
# in the session as 'grid.initial.sha' so that we can detect
# whether it has been changed since it was last saved
session['grid.initial.sha'] = sha256(jsonstr)
# Show the grid screen
return redirect(url_for('uigrid.grid_screen'))
def grid_new():
""" Creates a new grid and redirects to grid screen """
# Get the grid size from the form
n = int(request.args.get('n'))
# Remove any leftover grid name in the session
session.pop('gridname', None)
# Create the grid
grid = Grid(n)
jsonstr = grid.to_json()
session['grid'] = jsonstr
session['grid.initial.sha'] = sha256(jsonstr)
return redirect(url_for('uigrid.grid_screen'))
def __init__(self):
self.id = 1
self.username = "******"
self.password = sha256('My Password')
dateformat = "%Y-%m-%dT%H:%M:%S.%f"
self.created = datetime(2020, 5, 31, 18, 23, 56).strftime(dateformat)
self.modified = datetime(2020, 6, 28, 1, 2, 3).strftime(dateformat)
self.last_access = datetime(2020, 7, 20, 4, 5, 6).strftime(dateformat)
self.email = "*****@*****.**"
self.confirmed = datetime(2020, 5, 31, 19, 0, 0).strftime(dateformat)
self.author_name = "John Q. Puzzlemaker"
self.address_line_1 = "123 Main Street"
self.address_line_2 = "Apt. 456"
self.address_city = "Anytown"
self.address_state = "NY"
self.address_zip = "12345"
def grid_open():
""" Opens a new grid and redirects to grid screen """
# Get the chosen grid name from the query parameters
gridname = request.args.get('gridname')
# Open the corresponding file and read its contents as json
# and recreate the grid from it
userid = 1 # TODO Replace hard coded user id
jsonstr = grid_load_common(userid, gridname)
# Store the grid and grid name in the session
session['grid'] = jsonstr
session['grid.initial.sha'] = sha256(jsonstr)
session['gridname'] = gridname
return redirect(url_for('uigrid.grid_screen'))
def puzzle_open():
""" Opens a new puzzle and redirects to puzzle screen """
# Get the chosen puzzle name from the query parameters
puzzlename = request.args.get('puzzlename')
# Open the corresponding file and read its contents as json
# and recreate the puzzle from it
userid = 1 # TODO Replace hard coded user id
jsonstr = puzzle_load_common(userid, puzzlename)
puzzle = Puzzle.from_json(jsonstr)
# Store the puzzle and puzzle name in the session
session['puzzle'] = jsonstr
session['puzzle.initial.sha'] = sha256(jsonstr)
session['puzzlename'] = puzzlename
return redirect(url_for('uipuzzle.puzzle_screen'))
def grid_new_from_puzzle():
""" Creates a new grid from the specified puzzle """
puzzlename = request.args.get('puzzlename')
userid = 1 # TODO replace hard-coded user ID
query = DBPuzzle.query.filter_by(userid=userid, puzzlename=puzzlename)
jsonstr = query.first().jsonstr
grid = Grid.from_json(jsonstr)
grid.undo_stack = []
grid.redo_stack = []
jsonstr = grid.to_json()
# Save grid in the session
session['grid'] = jsonstr
session['grid.initial.sha'] = sha256(jsonstr)
# Remove any leftover grid name in the session
session.pop('gridname', None)
return redirect(url_for('uigrid.grid_screen'))
def test_same(self):
cs1 = sha256("Hello")
cs2 = sha256("Hello")
self.assertEqual(cs1, cs2)
def test_obj(self):
x = object()
sha = sha256(x)
self.assertIsNotNone(sha)
def test_int(self):
x = 17
sha = sha256(x)
self.assertIsNotNone(sha)
def test_none(self):
x = None
sha = sha256(x)
self.assertIsNotNone(sha)
def test_different(self):
cs1 = sha256("Hello1")
cs2 = sha256("Hello2")
self.assertNotEqual(cs1, cs2)