' Usage:
'  cscript compose.vbs <file> <path>

' Reads all modules, classes, forms, macros, queries, tables and their relationships in a directory created by "decompose.vbs"
' and composes then into an Access Database file (.accdb).
' Requires Microsoft Access.
Option Explicit

Const acForm = 2
Const acModule = 5
Const acMacro = 4
Const acReport = 3
Const acQuery = 1
Const acStructureOnly = 0   'change 0 to 1 if you want import StructureAndData instead of StructureOnly
Const acCmdCompileAndSaveAllModules = &H7E

Dim fso, relDoc, ACCDBFilename, sPath
Set fso = CreateObject("Scripting.FileSystemObject")
Set relDoc = CreateObject("Microsoft.XMLDOM")

If (Wscript.Arguments.Count = 0) Then
 MsgBox "Please provide the .accdb database file", vbExclamation, "Error"
 Wscript.Quit()
End If

ACCDBFilename = fso.GetAbsolutePathName(Wscript.Arguments(0))
If (Wscript.Arguments.Count = 1) Then
 sPath = ""
Else
 sPath = Wscript.Arguments(1)
End If


importModulesTxt ACCDBFilename, sPath

If (Err <> 0) And (Err.Description <> Null) Then
    MsgBox Err.Description, vbExclamation, "Error"
    Err.Clear
End If


Function importModulesTxt(ACCDBFilename, sImportpath)
    Dim myComponent, sModuleType, sTempname, sOutstring

    ' Build file and pathnames
    Dim myType, myName, myPath
    myType = fso.GetExtensionName(ACCDBFilename)
    myName = fso.GetBaseName(ACCDBFilename)
    myPath = fso.GetParentFolderName(ACCDBFilename)

    ' if no path was given as argument, use a relative directory
    If (sImportpath = "") Then
        sImportpath = myPath & "\src\"
    else
        sImportpath = myPath & sImportpath
    End If

    ' check for existing file and ask to overwrite with the stub
    If fso.FileExists(ACCDBFilename) Then
     Wscript.StdOut.Write ACCDBFilename & " already exists. Overwrite? (y/n) "
     Dim sInput
     sInput = Wscript.StdIn.Read(1)
     If (sInput <> "y") Then
      Wscript.Quit
     Else
      If fso.FileExists(ACCDBFilename & ".bak") Then
       fso.DeleteFile (ACCDBFilename & ".bak")
      End If
      fso.MoveFile ACCDBFilename, ACCDBFilename & ".bak"
     End If
    End If

    'Wscript.Echo "starting Access..."
    Dim oApplication
    Set oApplication = CreateObject("Access.Application")
    'Wscript.Echo "Opening " & ACCDBFilename
    If (Right(ACCDBFilename, 4) = ".adp") Then
        oApplication.CreateAccessProject ACCDBFilename
    Else
        oApplication.NewCurrentDatabase ACCDBFilename
    End If
    oApplication.Visible = False

    Dim folder
    Set folder = fso.GetFolder(sImportpath)

    'load each file from the import path into the stub
    Dim myFile, objectname, objecttype
    For Each myFile In folder.Files
     objectname = fso.GetBaseName(myFile.Name)  'get rid of .txt extension
     objecttype = fso.GetExtensionName(objectname)
     objectname = fso.GetBaseName(objectname)

     Select Case objecttype
      Case "form"
       'Wscript.Echo "Importing FORM from file " & myFile.Name
       oApplication.LoadFromText acForm, objectname, myFile.Path
      Case "module"
       'Wscript.Echo "Importing MODULE from file " & myFile.Name
       oApplication.LoadFromText acModule, objectname, myFile.Path
      Case "macro"
       'Wscript.Echo "Importing MACRO from file " & myFile.Name
       oApplication.LoadFromText acMacro, objectname, myFile.Path
      Case "report"
      ' Wscript.Echo "Importing REPORT from file " & myFile.Name
       oApplication.LoadFromText acReport, objectname, myFile.Path
      Case "query"
       'Wscript.Echo "Importing QUERY from file " & myFile.Name
       oApplication.LoadFromText acQuery, objectname, myFile.Path
      Case "table"
       'Wscript.Echo "Importing TABLE from file " & myFile.Name
       oApplication.ImportXml myFile.Path, acStructureOnly
      Case "rel"
       'Wscript.Echo "Found RELATIONSHIPS file " & myFile.Name & " ... opening, it will be processed after everything else has been imported"
       relDoc.Load (myFile.Path)
     End Select
    Next

    If relDoc.readyState Then
    ' Wscript.Echo "Preparing to build table dependencies..."
     Dim xmlRel, xmlField, accessRel, relTable, relName, relFTable, relAttr, i
     For Each xmlRel In relDoc.SelectNodes("/Relations/Relation")   'loop through every Relation node inside .xml file
      relName = xmlRel.SelectSingleNode("Name").Text
      relTable = xmlRel.SelectSingleNode("Table").Text
      relFTable = xmlRel.SelectSingleNode("ForeignTable").Text
      relAttr = xmlRel.SelectSingleNode("Attributes").Text

      'remove any possible conflicting relations or indexes
      On Error Resume Next
      oApplication.CurrentDb.Relations.Delete (relName)
      oApplication.CurrentDb.TableDefs(relTable).Indexes.Delete (relName)
      oApplication.CurrentDb.TableDefs(relFTable).Indexes.Delete (relName)
      On Error GoTo 0

      'Wscript.Echo "Creating relation " & relName & " between tables " & relTable & " -> " & relFTable
      Set accessRel = oApplication.CurrentDb.CreateRelation(relName, relTable, relFTable, relAttr)  'create the relationship object

      For Each xmlField In xmlRel.SelectNodes("Field")  'in case the relationship works with more fields
       accessRel.Fields.Append accessRel.CreateField(xmlField.SelectSingleNode("Name").Text)
       accessRel.Fields(xmlField.SelectSingleNode("Name").Text).ForeignName = xmlField.SelectSingleNode("ForeignName").Text
       'Wscript.Echo "  Involving fields " & xmlField.SelectSingleNode("Name").Text & " -> " & xmlField.SelectSingleNode("ForeignName").Text
      Next

      oApplication.CurrentDb.Relations.Append accessRel 'append the newly created relationship to the database
     ' Wscript.Echo "  Relationship added"
     Next
    End If

    oApplication.RunCommand acCmdCompileAndSaveAllModules
    oApplication.Quit
End Function