#!/usr/bin/env python

# $Id$

"""
Scans apps dir for current core client and application versions and updates
the database as appropriate.

config.xml must contain an <app_dir> which specifies the directory to search.

apps/boinc/ contains core client versions.
apps/APPLICATION_NAME/ contains application versions for each application.

file names must be of the form NAME_VERSION_PLATFORM[.ext]:
  boinc_7.17_i686-pc-linux-gnu.gz
  astropulse_7.17_windows_intelx86.exe

The prefix name and extensions .gz, .exe, .sit are ignored.  Platform strings
must match the names of platforms in the database.

"""

import boinc_path_config
from Boinc import database, db_mid, configxml, tools
import sys, os, glob, re, time

verbose = 0
try:
    if sys.argv[1] == '-v':
        verbose = 1
except:
    pass

config = configxml.default_config().config
database.connect()

create_time = int(time.time())

assert(config.app_dir
       and
       config.download_dir
       and
       config.download_url
       )

objects_to_commit = []

def xsort(list):
    newlist = list[:]
    newlist.sort()
    return newlist

def add_files(app, match, exec_file, non_exec_files=[]):
    ''' add files to app/core.

    EXEC_FILE is the executable, and NON_EXEC_FILES are supporting
    non-executable files.

    MATCH is the output of re_match_exec_filename(EXEC_FILE).
    '''
    assert(match)
    version_major, version_minor, platform_name = match.groups()
    version_num = int(version_major) * 100 + int(version_minor)

    file_base = os.path.basename(exec_file)
    platforms = database.Platforms.find(name = platform_name)
    if not platforms:
        print >>sys.stderr, "  Unknown platform '%s' for file %s" %(platform_name, file_base)
        continue
    platform = platforms[0]

    if app:
        existing_versions = database.AppVersions.find(app=app, platform=platform, version_num=version_num)
        if existing_versions:
            if verbose:
                print "  Skipping existing %s %3d: %s" %(app.name, version_num, file_base)
            continue

        print "  Found %s version %s for %s: %s" %(app, version_num, platform, file_base),
        if non_exec_files:
            print "(+ %d bundled file(s))"%len(non_exec_files)
        else:
            print

        xml_doc = tools.process_app_version(
            app = app,
            version_num = version_num,
            exec_files = [exec_file],
            non_exec_files = non_exec_files
            )

        object = database.AppVersion(create_time = create_time,
                                     app = app,
                                     platform = platform,
                                     version_num = version_num,
                                     xml_doc = xml_doc)
    else:
        assert(not non_exec_files)      # this wouldn't make sense for core clients
        existing_versions = database.CoreVersions.find(platform=platform, version_num=version_num)
        if existing_versions:
            if verbose:
                print "  Skipping existing core version %s: %s" %(version_num, file_base)
            continue

        print "  Found core version %3d for %s: %s" %(version_num, platform, file_base)

        xml_doc = tools.process_executable_file(exec_file)

        object = database.CoreVersion(create_time = create_time,
                                      platform = platform,
                                      version_num = version_num,
                                      xml_doc = xml_doc)

    objects_to_commit.append(object)

def re_match_exec_filename(file):
    return re.match('[^.]+_([0-9]+)[.]([0-9]+)_(.+?)(?:[.]gz|[.]exe|[.]sit)?$', file)

def find_versions(app, dir):
    """Find application versions/core client versions in DIR.

    if app==None, then dir contains core clients; else contains application
    versions.

    If directory contains sub-directories, those are scanned (non-recursively)
    for files.  If an executable is found, the first one found
    (alphabetically) is the main program and other files bundled as
    non-executables.

    """

    for filepath in xsort(glob.glob(os.path.join(dir, '*'))):
        file = os.path.basename(filepath)
        if os.path.isdir(filepath):
            # add executable + bundle as app/core version
            exec_file = None
            match = None
            non_exec_files = []
            dir = filepath
            for filepath in xsort(glob.glob(os.path.join(dir, '*'))):
                if os.path.isdir(filepath):
                    continue
                if not match:
                    # no executable found yet, try this one
                    match = re_match_exec_filename(file)
                    if match:
                        # found an executable matching regexp
                        exec_file = file
                        continue
                non_exec_files.append(file)
            if not match:
                print >>sys.stderr, "  Ignoring directory", dir
                continue
            add_files(app=app, match=match,
                      exec_file=exec_file,
                      non_exec_files=non_exec_files)
        else:
            # add a single executable as app/core version
            match = re_match_exec_filename(file)
            if not match:
                print >>sys.stderr, "  Ignoring unknown file", filepath
                continue
            add_files(app=app, match=match, exec_file=filepath)

for appdir in xsort(glob.glob(os.path.join(config.app_dir,'*'))):
    if not os.path.isdir(appdir): continue
    dirname = os.path.basename(appdir)
    if dirname == 'boinc':
        print "Looking for core versions in", appdir
        find_versions(None, appdir)
        continue
    appname = os.path.basename(appdir)
    apps = database.Apps.find(name=appname)
    if apps:
        print "Looking for %s versions in"%apps[0], appdir
        find_versions(apps[0], appdir)
        continue

    print "Couldn't find app '%s'" %(appname)

if not objects_to_commit:
    raise SystemExit("No new versions found!")

print "Commit %d items:" %len(objects_to_commit)
for object in objects_to_commit:
    print "   ", object

if not tools.query_yesno("Continue"):
    raise SystemExit

for object in objects_to_commit:
    object.commit()

print "Done"