import json
from Logger import Logger
from constants import constants
import os.path
from CommandUtils import CommandUtils
from PackageUtils import PackageUtils

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 =  constants.specData.getListPackages()
        listPackages.sort()
        listRPMFiles = []
        cmdUtils = CommandUtils()
        for package in listPackages:
            release = constants.specData.getRelease(package)
            version = constants.specData.getVersion(package)
            listRPMPackages = constants.specData.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()