"""Subversion plugin for backup.py.

Hotcopy's are performed via the svnadmin command:
    svnadmin hotcopy /repos/path /path/to/dest
"""

import plugins

config = False
location = ''
nlocations = []

def init(cfg, *args, **kwargs):
    global location, nlocations, config
    config = cfg
    if len(args) != 1:
        if kwargs.has_key('location'):
            location = kwargs['location']
        else:
            raise plugins.PluginError
    else:
        location = args[0]
        nlocations = plugins.normalize_path(args[0], cwd=False)

def pre():
    """Prepare a copy of the trac install using the hotcopy command."""
    mkdir = "mkdir -p /tmp%s"
    cmd = "svnadmin hotcopy %s /tmp%s"
    if nlocations:
        for loc in nlocations:
            c = cmd % (loc, loc)
            print '>>>', mkdir % loc
            plugins.print_exec(mkdir % loc)
            print '>>>', c
            plugins.print_exec(c)
    else:
        print '>>>', mkdir % loc
        plugins.print_exec(mkdir % loc)
        c = cmd % (location, location)
        print '>>>', c
        plugins.print_exec(c)

def run():
    """Backup all of the svn copies in /tmp.
    Read the rsync manpage in the 'relative' section to see why,
    but we want to run rsync with the source /tmp/./path/to/svn"""
    rsync = config.rsync()
    dest = config.destination()
    # we want rsync + source + dest
    def source(loc):
        return '/tmp/.%s ' % loc
    if nlocations:
        for loc in nlocations:
            c = rsync + source(loc) + dest
            print '>r>', c
            plugins.print_exec(c)
    else:
        c = rsync + source(location) + dest
        print '>r>', c
        plugins.print_exec(c)

def post():
    global config, location, nlocations
    cmd = "rm -r /tmp%s"
    if nlocations:
        for loc in nlocations:
            c = cmd % loc
            print '<<<', c
            plugins.print_exec(c)
    else:
        c = cmd % location
        print '<<<', c
        plugins.print_exec(c)
    config = False
    location = ''
    nlocations = []