#!/usr/bin/env python
# -*-python-*-
#
# Copyright (C) 1999-2012 The ViewCVS Group. All Rights Reserved.
#
# By using this file, you agree to the terms and conditions set forth in
# the LICENSE.html file which can be found at the top level of the ViewVC
# distribution or at http://viewvc.org/license-1.html.
#
# For more information, visit http://viewvc.org/
#
# -----------------------------------------------------------------------
#
# administrative program for CVSdb; this is primarily
# used to add/rebuild CVS repositories to the database
#
# -----------------------------------------------------------------------
#

#########################################################################
#
# INSTALL-TIME CONFIGURATION
#
# These values will be set during the installation process. During
# development, they will remain None.
#

LIBRARY_DIR = None
CONF_PATHNAME = None

# Adjust sys.path to include our library directory
import sys
import os

if LIBRARY_DIR:
  sys.path.insert(0, LIBRARY_DIR)
else:
  sys.path.insert(0, os.path.abspath(os.path.join(sys.argv[0], "../../lib")))

#########################################################################
  
import os
import string
import cvsdb
import viewvc
import vclib.ccvs


def UpdateFile(db, repository, path, update, quiet_level):
    try:
        if update:
            commit_list = cvsdb.GetUnrecordedCommitList(repository, path, db)
        else:
            commit_list = cvsdb.GetCommitListFromRCSFile(repository, path)
    except cvsdb.error, e:
        print '[ERROR] %s' % (e)
        return

    file = string.join(path, "/")
    printing = 0
    if update:
        if quiet_level < 1 or (quiet_level < 2 and len(commit_list)):
            printing = 1
            print '[%s [%d new commits]]' % (file, len(commit_list)),
    else:
        if quiet_level < 2:
            printing = 1
            print '[%s [%d commits]]' % (file, len(commit_list)),

    ## add the commits into the database
    for commit in commit_list:
        db.AddCommit(commit)
        if printing:
            sys.stdout.write('.')
        sys.stdout.flush()
    if printing:
        print


def RecurseUpdate(db, repository, directory, update, quiet_level):
    for entry in repository.listdir(directory, None, {}):
        path = directory + [entry.name]

        if entry.errors:
            continue

        if entry.kind is vclib.DIR:
            RecurseUpdate(db, repository, path, update, quiet_level)
            continue

        if entry.kind is vclib.FILE:
            UpdateFile(db, repository, path, update, quiet_level)

def RootPath(path, quiet_level):
    """Break os path into cvs root path and other parts"""
    root = os.path.abspath(path)
    path_parts = []

    p = root
    while 1:
        if os.path.exists(os.path.join(p, 'CVSROOT')):
            root = p
            if quiet_level < 2:
                print "Using repository root `%s'" % root
            break

        p, pdir = os.path.split(p)
        if not pdir:
            del path_parts[:]
            if quiet_level < 1:
                print "Using repository root `%s'" % root
                print "Warning: CVSROOT directory not found."
            break

        path_parts.append(pdir)

    root = cvsdb.CleanRepository(root)
    path_parts.reverse()
    return root, path_parts

def usage():
    cmd = os.path.basename(sys.argv[0])
    sys.stderr.write(
"""Administer the ViewVC checkins database data for the CVS repository
located at REPOS-PATH.

Usage: 1. %s [[-q] -q] rebuild REPOS-PATH
       2. %s [[-q] -q] update REPOS-PATH
       3. %s [[-q] -q] purge REPOS-PATH

1.  Rebuild the commit database information for the repository located
    at REPOS-PATH, after first purging information specific to that
    repository (if any).

2.  Update the commit database information for all unrecorded commits
    in the repository located at REPOS-PATH.

3.  Purge information specific to the repository located at REPOS-PATH
    from the database.

Use the -q flag to cause this script to be less verbose; use it twice to
invoke a peaceful state of noiselessness.

""" % (cmd, cmd, cmd))
    sys.exit(1)


## main
if __name__ == '__main__':
    args = sys.argv

    # check the quietness level (0 = verbose, 1 = new commits, 2 = silent)
    quiet_level = 0
    while 1:
        try:
            index = args.index('-q')
            quiet_level = quiet_level + 1
            del args[index]
        except ValueError:
            break

    # validate the command
    if len(args) <= 2:
        usage()
    command = args[1].lower()
    if command not in ('rebuild', 'update', 'purge'):
        sys.stderr.write('ERROR: unknown command %s\n' % command)
        usage()

    # get repository and path, and do the work
    root, path_parts = RootPath(args[2], quiet_level)
    rootpath = vclib.ccvs.canonicalize_rootpath(root)
    try:
        cfg = viewvc.load_config(CONF_PATHNAME)
        db = cvsdb.ConnectDatabase(cfg)

        if command in ('rebuild', 'purge'):
            if quiet_level < 2:
                print "Purging existing data for repository root `%s'" % root
            try:
                db.PurgeRepository(root)
            except cvsdb.UnknownRepositoryError, e:
                if command == 'purge':
                    sys.stderr.write("ERROR: " + str(e) + "\n")
                    sys.exit(1)

        if command in ('rebuild', 'update'):
            repository = vclib.ccvs.CVSRepository(None, rootpath, None,
                                                  cfg.utilities, 0)
            RecurseUpdate(db, repository, path_parts,
                          command == 'update', quiet_level)
    except KeyboardInterrupt:
        print
        print '** break **'
        
    sys.exit(0)