#===============================================================================
#
#          FILE: Validation.py
# 
#         USAGE: --- 
# 
#   DESCRIPTION: This module is use to create validation for openProject,newProject and other activity. 
# 
#       OPTIONS: ---
#  REQUIREMENTS: ---
#          BUGS: ---
#         NOTES: ---
#        AUTHOR: Fahim Khan, fahim.elex@gmail.com
#  ORGANIZATION: eSim team at FOSSEE, IIT Bombay.
#       CREATED: Wednesday 12 February 2015 
#      REVISION:  ---
#===============================================================================
import os
import re 
import distutils.spawn


class Validation:
    """
    This is Validation class use for validating Project.
    e.g if .proj is present in project directory
    or if new project name is already exist in workspace etc
    """
    def __init__(self):
        pass
    
    def validateOpenproj(self,projDir):
        """
        This function validate Open Project Information.
        """
        print "Function: Validating Open Project Information"
        projName = os.path.basename(str(projDir))
        lookProj = os.path.join(str(projDir),projName+".proj")
        #Check existence of project
        if os.path.exists(lookProj):
            return True
        else:
            return False
       
        
    
    def validateNewproj(self,projDir):
        """
        This Project Validate New Project Information
        """
        print "Function: Validating New Project Information"
                
        #Checking existence of project with same name
        if os.path.exists(projDir):
            return "CHECKEXIST" #Project with name already exist
        else:
            #Check Proper name for project. It should not have space
            if re.search(r"\s",projDir ):
                return "CHECKNAME"
            else:
                return "VALID"
            
    def validateKicad(self,projDir):
        """
        This function validate if Kicad components are present
        """
        print "FUnction : Validating for Kicad components"
        if projDir == None:
            return False
        else:
            return True
        
    def validateCir(self,projDir):
        """
        This function checks if ".cir" file is present.
        """
        projName = os.path.basename(str(projDir))
        lookCir = os.path.join(str(projDir),projName+".cir")
        #Check existence of project
        if os.path.exists(lookCir):
            return True
        else:
            return False
        
    def validateSub(self,subDir,givenNum):
        """
        This function checks if ".sub" file is present.
        """
        subName = os.path.basename(str(subDir))
        lookSub = os.path.join(str(subDir),subName+".sub")
        #Check existence of project
        if os.path.exists(lookSub):
            f = open(lookSub)
            data=f.read()
            f.close()
            netlist=data.splitlines()
            for eachline in netlist:
                eachline=eachline.strip()
                if len(eachline)<1:
                    continue
                words=eachline.split()
                if words[0] == '.subckt':
                    #The number of ports is specified in this line
                    #eg. '.subckt ua741 6 7 3' has 3 ports (6, 7 and 3).
                    numPorts = len(words) - 2
                    print "Looksub : ",lookSub
                    print "Given Number of ports : ",givenNum
                    print "Actual Number of ports :",numPorts
                    if numPorts != givenNum:
                        return "PORT"
                    else:
                        return "True"
        else:
            return "DIREC"
        
    def validateCirOut(self,projDir):
        """
        This function checks if ".cir.out" file is present.
        """
        projName = os.path.basename(str(projDir))
        lookCirOut = os.path.join(str(projDir),projName+".cir.out")
        #Check existence of project
        if os.path.exists(lookCirOut):
            return True
        else:
            return False
            
    def validateTool(self,toolName):
        """
        This function check if tool is present in the system
        """
        return distutils.spawn.find_executable(toolName) is not None