# Copyright (c) 2012 netzguerilla.net <iro@netzguerilla.net>

# 

# This file is part of Iro.

# 

# Permission is hereby granted, free of charge, to any person obtaining a copy of

# this software and associated documentation files (the "Software"), to deal in

# the Software without restriction, including without limitation the rights to use,

# copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the

# #Software, and to permit persons to whom the Software is furnished to do so,

# subject to the following conditions:

# 

# The above copyright notice and this permission notice shall be included in

# all copies or substantial portions of the Software.

# 

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,

# INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A

# PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

from iro.model import schema

tables = schema.Base.metadata.sorted_tables

tables_cls={}

for i in dir(schema):

    if i.startswith("__") or i == "Base":

        continue

    try:

        a = getattr(schema,i)

        tables_cls[a.__tablename__] = a

    except AttributeError:

        pass

#schema plot

def createSchemaPlot(fname):

    from sqlalchemy_schemadisplay import create_schema_graph

    graph = create_schema_graph(engine=None,

        metadata=schema.Base.metadata,

        tables=tables,

        show_datatypes=True, # The image too large if datatypes shown

        show_indexes=True, # ditto for indexes

        rankdir='LR', # From left to right (instead of top to bottom)

        concentrate=True, # Don't try to join the relation lines together

    )

    graph.set_size('6.5,10')

    #graph.set_ratio("fill")

    graph.write_svg(fname)