import json

 import os.path

 from Logger import Logger
 from constants import constants
 from CommandUtils import CommandUtils

 from PackageUtils import PackageUtils

 from SpecData import SPECS

 class PackageInfo(object):

     def __init__(self, logName=None, logPath=None):

         if logName is None:

             logName = "PackageInfo"

         if logPath is None:
             logPath = constants.logPath

         self.logName = logName
         self.logPath = logPath
         self.logger = Logger.getLogger(logName, logPath)

         self.pkgList = {}

     def loadPackagesData(self):

         listPackages = SPECS.getData().getListPackages()

         listPackages.sort()
         listRPMFiles = []
         cmdUtils = CommandUtils()
         for package in listPackages:

             release = SPECS.getData().getRelease(package)
             version = SPECS.getData().getVersion(package)
             listRPMPackages = SPECS.getData().getRPMPackages(package)

             srpmFileName = package + "-" + version + "-" + release + ".src.rpm"

             srpmFiles = cmdUtils.findFile(srpmFileName, constants.sourceRpmPath)
             srpmFile = None
             if len(srpmFiles) == 1:
                 srpmFile = srpmFiles[0]

             debugrpmFileName = package + "-debuginfo-" + version + "-" + release + "*"

             debugrpmFiles = cmdUtils.findFile(debugrpmFileName, constants.rpmPath)
             debugrpmFile = None
             if len(debugrpmFiles) == 1:
                 debugrpmFile = debugrpmFiles[0]

             pkgUtils = PackageUtils(self.logName, self.logPath)

             for rpmPkg in listRPMPackages:
                 rpmFile = pkgUtils.findRPMFileForGivenPackage(rpmPkg)
                 if rpmFile is not None:
                     listRPMFiles.append(rpmFile)

                     listPkgAttributes = {"sourcerpm":srpmFile, "rpm":rpmFile,
                                          "debugrpm":debugrpmFile}

                     self.pkgList[rpmPkg] = listPkgAttributes

                     self.logger.debug("Added " + rpmPkg + " rpm package to the list")

                 else:

                     self.logger.error("Missing rpm file for package:" + rpmPkg)

     def writePkgListToFile(self, fileName):

         self.logger.info("Writing package list to the json file")
         cmdUtils = CommandUtils()
         dirPath = os.path.basename(fileName)
         if not os.path.isdir(dirPath):
             cmdUtils.runCommandInShell("mkdir -p " + dirPath)
         pkgInfoFile = open(fileName, 'w+')
         json.dump(self.pkgList, pkgInfoFile, indent=4)
         pkgInfoFile.close()