import os, glob, re
"""Script that is run on the CIPRES web server weekly to remove old builds (and build logs and test-reports)
It leaves the newest build for each platform and any archives listed in /misc/www/projects/TOL/dev_snapshot/save.txt
"""
import sys

dryRun = '--dry-run' in sys.argv

def lslt(filePattern = '*'):
    'Returns a list of files that match the fileglob sorted by mod time (newest first)'
    d =  filePattern
    l = glob.glob(d)
    withTimes = [(os.stat(i).st_mtime, i) for i in l]
    withTimes.sort()
    withTimes.reverse()
    return [i[1] for i in withTimes]

_pat = re.compile(r'CIPRES-v([^-]+)-r([^-]+)-(.*)(.dmg|.tar.gz|.zip)')

def archiveNameToTuple(filename):
    m = _pat.match(filename)
    if m:
        return m.groups()
    return (None, None, None, None)
    
def getFilesToSave():
    try:
        f = open(os.environ.get('WEB_PAGE_HOME', '/misc/www/projects/TOL') + '/dev_snapshot/save.txt', 'rU')
        return [archiveNameToTuple(filename) for filename in f]
    except:
        return []

def remove(p):
    if not os.path.exists(p):
        print p, 'does not exist!'
        return
    if os.path.isdir(p):
        s = 'rm -rf %s' % p
        print s
        if not dryRun:
            os.system(s)
    else:
        print 'rm ', p
        if not dryRun:
            os.remove(p)

if __name__ == '__main__':
    webDir = os.environ.get('WEB_PAGE_HOME', '/misc/www/projects/TOL/')
    dev_snapshotPage = os.path.join(webDir, 'dev_snapshot')
    buildLogPage = os.path.join(webDir, 'software/SDK/build-logs')
    testLogPage = os.path.join(webDir, 'software/SDK/test-reports')
    toSave =  getFilesToSave()
    snapshotsToSave = ['CIPRES-v%s-r%s-%s%s' % i for i in toSave]
    #toSave =  getFilesToSave()
    #toSave =  getFilesToSave()
    patterns = ['CIPRES-v*-r*-Mac*Universal.dmg', 'CIPRES-v*-r*-win*.zip', 'CIPRES-v*-r*-Linux*.tar.gz']
    for p in patterns:
        snapshots = lslt(dev_snapshotPage + '/' + p)
        newest = True
        for path in snapshots:
            if newest:
                newest = False
                print 'Leaving the newest: ', path
                continue
            par, filename = os.path.split(path)
            if filename not in snapshotsToSave:
                remove(path)
                t = archiveNameToTuple(filename)
                remove(os.path.join(buildLogPage, '%s-cipres-%s-r%s-build-log.txt' % (t[2], t[0], t[1])))
                remove(os.path.join(testLogPage, '%s-cipres-%s-r%s-test-report' % (t[2], t[0], t[1])))
            else:
                print 'Leaving saved: ', filename