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, constants.logLevel)
        self.pkgList = {}

    def loadPackagesData(self):
        listPackages = SPECS.getData().getListPackages()
        listPackages.sort()
        cmdUtils = CommandUtils()
        for package in listPackages:
            for version in SPECS.getData().getVersions(package):
                release = SPECS.getData().getRelease(package, version)
                listRPMPackages = SPECS.getData().getRPMPackages(package, version)
                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.findRPMFile(rpmPkg, version)
                    if rpmFile is not None:
                        listPkgAttributes = {"sourcerpm":srpmFile, "rpm":rpmFile,
                                             "debugrpm":debugrpmFile}
                        self.pkgList[rpmPkg+"-"+version] = listPkgAttributes
                        self.logger.debug("Added " + rpmPkg + "-" + version + " to the package info json")
                    else:
                        self.logger.debug("Missing rpm file for package:" + rpmPkg)

    def writePkgListToFile(self, fileName):
        self.logger.debug("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)
        with open(fileName, 'w+') as pkgInfoFile:
            json.dump(self.pkgList, pkgInfoFile, indent=4)