Attribute VB_Name = "OpenParentAssembly"
Option Explicit

' Open Parent Assembly Candidate
' Free SOLIDWORKS VBA macro from sandbasher.github.io/solidworks-automation
' Provided as-is with no warranty. Test on copied files before production use.
' Assumptions: Open saved part/assembly; Folder to scan for .SLDASM files

Const swDocPART As Long = 1
Const swDocASSEMBLY As Long = 2
Const swDocDRAWING As Long = 3
Const swOpenDocOptions_Silent As Long = 1
Const swSaveAsOptions_Silent As Long = 1

Dim swApp As SldWorks.SldWorks

Sub main()
    On Error GoTo Fail
    Set swApp = Application.SldWorks
    RunMacro
    Exit Sub
Fail:
    MsgBox "Macro failed: " & Err.Description, vbCritical, "Open Parent Assembly Candidate"
End Sub

Private Function ActiveModel() As SldWorks.ModelDoc2
    Set ActiveModel = swApp.ActiveDoc
    If ActiveModel Is Nothing Then Err.Raise vbObjectError + 100, , "Open a SOLIDWORKS document first."
End Function

Private Function EnsureSaved(model As SldWorks.ModelDoc2) As String
    EnsureSaved = model.GetPathName
    If Len(EnsureSaved) = 0 Then Err.Raise vbObjectError + 101, , "Save the active document before running this macro."
End Function

Private Function FolderOf(filePath As String) As String
    FolderOf = Left$(filePath, InStrRev(filePath, "\") - 1)
End Function

Private Function BaseName(filePath As String) As String
    Dim nameOnly As String
    nameOnly = Mid$(filePath, InStrRev(filePath, "\") + 1)
    If InStrRev(nameOnly, ".") > 0 Then nameOnly = Left$(nameOnly, InStrRev(nameOnly, ".") - 1)
    BaseName = nameOnly
End Function

Private Function CleanFileName(value As String) As String
    Dim badChars As Variant
    Dim i As Long
    badChars = Array("\", "/", ":", "*", "?", """", "<", ">", "|")
    CleanFileName = Trim$(value)
    For i = LBound(badChars) To UBound(badChars)
        CleanFileName = Replace(CleanFileName, badChars(i), "_")
    Next i
    Do While InStr(CleanFileName, "__") > 0
        CleanFileName = Replace(CleanFileName, "__", "_")
    Loop
    If Len(CleanFileName) = 0 Then CleanFileName = "export"
End Function

Private Function CombinePath(folderPath As String, fileName As String) As String
    If Right$(folderPath, 1) = "\" Then
        CombinePath = folderPath & fileName
    Else
        CombinePath = folderPath & "\" & fileName
    End If
End Function

Private Sub EnsureFolder(folderPath As String)
    If Len(Dir(folderPath, vbDirectory)) = 0 Then MkDir folderPath
End Sub

Private Function GetProperty(model As SldWorks.ModelDoc2, propName As String) As String
    Dim mgr As SldWorks.CustomPropertyManager
    Dim rawValue As String
    Dim resolvedValue As String
    Set mgr = model.Extension.CustomPropertyManager(model.ConfigurationManager.ActiveConfiguration.Name)
    mgr.Get4 propName, False, rawValue, resolvedValue
    If Len(resolvedValue) = 0 Then
        Set mgr = model.Extension.CustomPropertyManager("")
        mgr.Get4 propName, False, rawValue, resolvedValue
    End If
    GetProperty = Trim$(resolvedValue)
End Function

Private Function PropertyFileStem(model As SldWorks.ModelDoc2, fallbackPath As String) As String
    Dim parts As Collection
    Dim value As Variant
    Dim result As String
    Set parts = New Collection
    AddIfPresent parts, GetProperty(model, "PartNo")
    AddIfPresent parts, GetProperty(model, "Part Number")
    AddIfPresent parts, GetProperty(model, "Revision")
    AddIfPresent parts, GetProperty(model, "Description")
    For Each value In parts
        If Len(result) > 0 Then result = result & "_"
        result = result & CStr(value)
    Next value
    If Len(result) = 0 Then result = BaseName(fallbackPath)
    PropertyFileStem = CleanFileName(result)
End Function

Private Sub AddIfPresent(items As Collection, value As String)
    If Len(Trim$(value)) > 0 Then items.Add Trim$(value)
End Sub

Private Function PickFolder(prompt As String) As String
    Dim shellApp As Object
    Dim folder As Object
    Set shellApp = CreateObject("Shell.Application")
    Set folder = shellApp.BrowseForFolder(0, prompt, 0)
    If folder Is Nothing Then Err.Raise vbObjectError + 102, , "No folder selected."
    PickFolder = folder.Self.Path
End Function

Private Function PickFile(prompt As String, filterDescription As String, extension As String) As String
    Dim dialog As Object
    Set dialog = CreateObject("MSComDlg.CommonDialog")
    dialog.DialogTitle = prompt
    dialog.Filter = filterDescription & "|*" & extension
    dialog.ShowOpen
    PickFile = dialog.FileName
    If Len(PickFile) = 0 Then Err.Raise vbObjectError + 103, , "No file selected."
End Function

Private Sub RunMacro()
    Dim model As SldWorks.ModelDoc2
    Dim targetPath As String
    Dim folderPath As String
    Dim fileName As String
    Dim errors As Long, warnings As Long
    Set model = ActiveModel()
    targetPath = EnsureSaved(model)
    folderPath = PickFolder("Select folder to scan for parent assemblies")
    fileName = Dir(CombinePath(folderPath, "*.SLDASM"))
    Do While Len(fileName) > 0
        If AssemblyReferencesFile(CombinePath(folderPath, fileName), targetPath) Then
            swApp.OpenDoc6 CombinePath(folderPath, fileName), swDocASSEMBLY, 0, "", errors, warnings
            Exit Sub
        End If
        fileName = Dir()
    Loop
    MsgBox "No parent assembly found in selected folder.", vbInformation, "Where-used scan complete"
End Sub

Private Function AssemblyReferencesFile(assemblyPath As String, targetPath As String) As Boolean
    Dim refs As Variant, ref As Variant
    refs = swApp.GetDocumentDependencies2(assemblyPath, False, True, False)
    If IsEmpty(refs) Then Exit Function
    For Each ref In refs
        If StrComp(CStr(ref), targetPath, vbTextCompare) = 0 Then AssemblyReferencesFile = True: Exit Function
    Next ref
End Function