#!/usr/bin/env python
# vi: encoding=utf-8 ts=8 sts=4 sw=4 et

import sys, os, config, string, urllib, re
errnum=0

def bailoutonerror():
    if not errnum == 0:
        print "%d error(s) encountered... aborting" % errnum
        sys.exit(1)

def perror(msg):
    global errnum
    errnum=errnum+1
    print msg

def rm(file):
    print 'rm: '+file

def mv(src, dst):
    print "mv: %s %s" % (src, dst)

class Build:
    def __init__(self):
        self.requester=''
        self.requester_email=''

class Pkg:
    def __init__(self, name, tree):
        self.file={}
        self.info={}
        self.build={}
        self.tree=tree
        self.name=name
        self.loaded=False
        self.marked4removal=False
        self.marked4moving=True
        self.load()

    def __repr__(self):
        return self.name

    def mark4moving(self):
        if not self.marked4moving:
            self.tree.marked4moving.append(self)
            self.marked4moving=True

    def mark4removal(self):
        if not self.marked4removal:
            self.tree.marked4removal.append(self)
            self.marked4removal=True

    def load(self):
        f=open(self.tree.basedir+'/SRPMS/.metadata/'+self.name+'.src.rpm.info', 'r')
        for entry in f.readlines():
            i=string.split(string.strip(entry), ':')
            if i[0] == 'info':
                if len(i)==3:
                    self.info[i[1]]=i[2]
                elif i[1]=='build':
                    if not self.build.has_key(i[2]):
                        self.build[i[2]]=Build()
                    if i[3]=='requester':
                        self.build[i[2]].requester=i[4]
                    elif i[3]=='requester_email':
                        self.build[i[2]].requester_email=i[4]
                else:
                    self.info[i[1]]=i[2:]
            elif i[0] == 'file':
                if not self.file.has_key(i[1]):
                    self.file[i[1]]=[]
                self.file[i[1]].append(i[2])
        f.close()
        self.loaded=True
        if self.info.has_key('move'):
            self.mark4moving()

    def writeinfo(self):
        f=open(self.tree.basedir+'/SRPMS/.metadata/'+name+'.src.rpm.info', 'w')
        for bid in self.build.keys():
            f.write("info:build:%s:requester:%s\ninfo:build:%s:requester_email:%s\n" % (bid, self.build[bid].requester, bid, self.build[bid].requester_email))
        for key in self.info.keys():
            f.write("info:%s:%s\n" % (key, string.join(self.info[key], ':')))
        for arch in self.file.keys():
            for rpm in self.file[arch]:
                f.write("file:%s:%s\n" % (arch, rpm))
        
    def remove(self):
        for arch in self.file.keys():
            for rpm in self.file[arch]:
                rm(self.tree.basedir+'/'+arch+'/RPMS/'+rpm)
        rm(self.tree.basedir+'/SRPMS/.metadata/'+self.name+'.src.rpm.info')

    def move(self, dsttree):
        if dsttree.has_key(self.name):
            movedany=False
            for arch in self.file.keys():
                if arch in dsttree[self.name].file.keys():
                    for rpm in self.file[arch]:
                        rm(self.tree.basedir+'/'+arch+'/RPMS/'+rpm)
                else:
                    movedany=True
                    dsttree[self.name].file[arch]=self.file[arch]
                    for rpm in self.file[arch]:
                        mv(self.tree.basedir+'/'+arch+'/RPMS/'+rpm, dsttree.basedir+'/'+arch+'/RPMS/')
            if movedany:
                for bid in self.build.keys():
                    dsttree[self.name].build[bid]=self.build[bid]
                dsttree[self.name].writeinfo()
                rm(self.tree.basedir+'/SRPMS/.metadata/'+self.name+'.src.rpm.info')
        else:
            for arch in self.file.keys():
                for rpm in self.file[arch]:
                    mv(self.tree.basedir+'/'+arch+'/RPMS/'+rpm, dsttree.basedir+'/'+arch+'/RPMS/')
            mv(self.tree.basedir+'/SRPMS/.metadata/'+self.name+'.src.rpm.info', dsttree.basedir+'/SRPMS/.metadata/')


class FtpTree:
    def __init__(self, tree, loadall=False):
        self.basedir=config.value['ftp_dir']+'/'+tree
        self.loadedpkgs={}
        self.marked4removal=[]
        self.marked4moving=[]
        def filter_pkgs(pkg):
            if not pkg[-13:]=='.src.rpm.info':
                return None
            else:
                return pkg[:-13]
        self.pkgnames=map(filter_pkgs, os.listdir(self.basedir+'/SRPMS/.metadata/'))
        if loadall:
            for i in self.pkgnames:
                self.loadedpkgs[i]=Pkg(i, self)
    def __getitem__(self, key):
        if self.loadedpkgs.has_key(key):
            return self.loadedpkgs[key]
        elif key in self.pkgnames:
            pkg=Pkg(key, self)
            self.loadedpkgs[key]=pkg
            return pkg
        else:
            raise KeyError, key
    def has_key(self, key):
        if key in self.pkgnames:
            return True
        else:
            return False
    def keys(self):
        return self.pkgnames

    def movepkgs(self, dsttree):
        self.__checkbuild()
        bailoutonerror()
        self.__checkarchs(dsttree)
        bailoutonerror()
        self.__rmolderfromsrc()
        self.__rmotherfromdst(dsttree)

        for pkg in self.marked4moving:
            pkg.move(dsttree)

    def removepkgs(self):
        for pkg in self.marked4removal:
            pkg.remove()

    def mark4removal(self, wannabepkgs):
        self.__mark4something(wannabepkgs, Pkg.mark4removal)

    def mark4moving(self, wannabepkgs):
        self.__mark4something(wannabepkgs, Pkg.mark4moving)
        

    # Internal functions below

    def __mark4something(self, wannabepkgs, markfunction):
        def chopoffextension(pkg):
            found=pkg.find('.src.rpm')
            if found==-1:
                return pkg
            else:
                return pkg[:found]
        for wannabepkg in wannabepkgs:
            pkgname=chopoffextension(wannabepkg)
            if pkgname in self.pkgnames:
                if not pkgname in self.loadedpkgs.keys():
                    self.loadedpkgs[pkgname]=Pkg(pkgname, self)
                markfunction(self.loadedpkgs[pkgname])
            else:
                perror(pkgname+" was not found in source tree")
        bailoutonerror()

    def __checkbuild(self):
        #f=urllib.urlopen('http://ep09.pld-linux.org/~builderth/queue.txt')
        f=open('queue.txt')
        requests={}
        reid=re.compile(r'^.*id=(.*) pri.*$')
        regb=re.compile(r'^group:.*$|builders:.*$', re.M)
        for i in re.findall(regb, f.read()):
            if i[0]=='g':
                id=reid.sub(r'\1', i)
                requests[id]=""
            elif i[0]=='b':
                requests[id]=requests[id]+i
        f.close()
        for pkg in self.marked4moving:
            for bid in pkg.build.keys():
                if requests.has_key(bid) and not requests[bid].find('?') == -1:
                    perror("Building of package %s (buildid %s) not finished" % (pkg,bid))

    def __checkarchs(self, dsttree):
        def find_other_pkgs(pkg, tree):
            ziewre=re.compile(string.join(pkg.name.split('-')[:-2], '-')+'-[^-]*-[^-]*$')
            def filter_other_pkgs(x):
                if ziewre.match(x) and not x == pkg.name:
                    return x
                else:
                    return None
            return filter(filter_other_pkgs, tree.pkgnames)
        self.find_other_pkgs=find_other_pkgs
        for pkg in self.marked4moving:
            otherpkgnames=find_other_pkgs(pkg, dsttree)
            curarchs=[]
            missingarchs=[]
            for somepkg in otherpkgnames:
                curarchs.extend(Pkg(somepkg, dsttree).file.keys())
            for arch in curarchs:
                if arch not in pkg.file.keys():
                    missingarchs.append(arch)
            if missingarchs:
                perror('Moving pkg %s would remove archs: %s' % (pkg, missingarchs))

    def __rmolderfromsrc(self):
        def find_older_pkgs(pkg):
            def filter_older_pkgs(x):
                ziew=x.split('-')
                cur=pkg.name.split('-')
                if ziew[-2]<cur[-2]:
                    return x
                elif ziew[-2]==cur[-2]:
                    if ziew[-1]<cur[-1]:
                        return x
                    else:
                        return None
                else:
                    return None
            return filter(filter_older_pkgs, self.find_other_pkgs(pkg, self))

        for pkg in self.marked4moving:
            olderpkgnames=find_older_pkgs(pkg)
            for i in olderpkgnames:
                Pkg(i, self).remove()

    def __rmotherfromdst(self, dsttree):
        for pkg in self.marked4moving:
            pkgnames=self.find_other_pkgs(pkg, dsttree)
            for i in pkgnames:
                Pkg(i, dsttree).remove()