#!C:\Documents and Settings\mysqldev\build\mysql-gui-win-res\python27\python.exe
#
# Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#

"""
This file contains the object diff utility which allows users to compare the
definitions of two objects and return the difference (like diff).
"""


import os
import re
import sys

from mysql.utilities.command.diff import object_diff, database_diff
from mysql.utilities.common.options import parse_connection, add_difftype
from mysql.utilities.common.options import add_verbosity, check_verbosity
from mysql.utilities.common.options import add_changes_for, add_reverse
from mysql.utilities.common.options import setup_common_options
from mysql.utilities.exception import UtilError

# Constants
NAME = "MySQL Utilities - mysqldiff "
DESCRIPTION = "mysqldiff - compare object definitions among objects" + \
              " where the difference is how db1.obj1 differs from db2.obj2"
USAGE = "%prog --server1=user:pass@host:port:socket " + \
        "--server2=user:pass@host:port:socket db1.object1:db2.object1 db3:db4"
PRINT_WIDTH = 75

# Setup the command parser
parser = setup_common_options(os.path.basename(sys.argv[0]),
                              DESCRIPTION, USAGE, False, False)

# Connection information for the source server
parser.add_option("--server1", action="store", dest="server1",
                  type="string", default="root@localhost:3306",
                  help="connection information for first server in "
                  "the form: <user>[:<password>]@<host>[:<port>][:<socket>]"
                  " or <login-path>[:<port>][:<socket>].")

# Connection information for the destination server
parser.add_option("--server2", action="store", dest="server2",
                  type="string", default=None,
                  help="connection information for second server in "
                  "the form: <user>[:<password>]@<host>[:<port>][:<socket>]"
                  " or <login-path>[:<port>][:<socket>].")

# Add display width option
parser.add_option("--width", action="store", dest="width",
                  type = "int", help="display width",
                  default=PRINT_WIDTH)

# Force mode
parser.add_option("--force", action="store_true", dest="force",
                  help="do not abort when a diff test fails")

# Add verbosity and quiet (silent) mode
add_verbosity(parser, True)

# Add difftype option with SQL option
add_difftype(parser, True)

# Add the direction (changes-for)
add_changes_for(parser)

# Add show reverse option
add_reverse(parser)

# Now we process the rest of the arguments.
opt, args = parser.parse_args()

# Warn if quiet and verbosity are both specified
check_verbosity(opt)

# Set options for database operations.
options = {
    "quiet"            : opt.quiet,
    "verbosity"        : opt.verbosity,
    "difftype"         : opt.difftype,
    "force"            : opt.force,
    "width"            : opt.width,
    "changes-for"      : opt.changes_for,
    "reverse"          : opt.reverse,
}

# Parse server connection values
try:
    server1_values = parse_connection(opt.server1, None, options)
except:
    parser.error("Server1 connection values invalid or cannot be parsed.")
if opt.server2 is not None:
    try:
        server2_values = parse_connection(opt.server2, None, options)
    except:
        parser.error("Server2 connection values invalid or cannot be parsed.")
else:
    server2_values = None
    
# Check for arguments
if len(args) == 0:
    parser.error("No objects specified to compare.")

# run the diff
diff_failed = False
for argument in args:
    m_obj = re.match("(\w+)(?:\.(\w+))?:(\w+)(?:\.(\w+))?", argument)
    if not m_obj:
        parser.error("Invalid format for object compare argument. "
                      "Format should be: db1.object:db2:object or db1:db2.")
    db1, obj1, db2, obj2 = m_obj.groups()
    if (obj1 is not None and obj2 is None) or \
       (obj1 is None and obj2 is not None):
        parser.error("Incorrect object compare argument. "
                      "Format should be: db1.object:db2:object or db1:db2.")
    
    # We have db1.obj:db2.obj
    if obj1 is not None:
        try:
            diff = object_diff(server1_values, server2_values,
                               "%s.%s" % (db1, obj1),
                               "%s.%s" % (db2, obj2), options)
        except UtilError, e:
            print "ERROR:", e.errmsg
            exit(1)
        if diff is not None:
            diff_failed = True
            
    # We have db1:db2
    else:
        try:
            res = database_diff(server1_values, server2_values,
                                db1, db2, options)
        except UtilError, e:
            print "ERROR:", e.errmsg
            exit(1)
        if not res:
            diff_failed = True

if diff_failed:
    if not opt.quiet:
        print "Compare failed. One or more differences found."
    exit(1)            

if not opt.quiet:
    print "Success. All objects are the same."
    
exit()