Option Explicit

Dim fso, logDir, pass
pass = True

Set fso = CreateObject("Scripting.FileSystemObject")
logDir = fso.GetParentFolderName(WScript.ScriptFullName) & "\test-logs"
If fso.FolderExists(logDir) Then
    fso.DeleteFolder logDir, True
End If

Function NewContext(path, httpMethod)
    Dim ctx
    Set ctx = CreateObject("WscMvc.RequestContext")
    ctx.Initialize path, httpMethod, logDir
    Set NewContext = ctx
End Function

Sub RunApplication(app, path, httpMethod, applicationName, statusLine, contentType, body, allowHeader)
    Dim ctx
    Set ctx = NewContext(path, httpMethod)
    statusLine = "" : contentType = "" : body = "" : allowHeader = ""
    app.Run ctx, applicationName, statusLine, contentType, body, allowHeader
    Set ctx = Nothing
End Sub

Sub CheckEqual(actual, expected, label)
    If actual = expected Then
        WScript.Echo "PASS: " & label
    Else
        WScript.Echo "FAIL: " & label & " -> expected [" & expected & "] got [" & actual & "]"
        pass = False
    End If
End Sub

' --- RequestContext contract ---
Dim ctx1
On Error Resume Next
Set ctx1 = NewContext("/hello", "GET")
If Err.Number <> 0 Then
    WScript.Echo "FAIL: could not create/initialize WscMvc.RequestContext - " & Err.Description
    pass = False
    Err.Clear
End If
On Error Goto 0

If pass Then
    CheckEqual ctx1.Path, "/hello", "RequestContext.Path"
    CheckEqual ctx1.HttpMethod, "GET", "RequestContext.HttpMethod"
    If Len(ctx1.CorrelationId) > 0 Then
        WScript.Echo "PASS: RequestContext.CorrelationId non-empty (" & ctx1.CorrelationId & ")"
    Else
        WScript.Echo "FAIL: RequestContext.CorrelationId empty"
        pass = False
    End If
    If ctx1.ElapsedMs() >= 0 Then
        WScript.Echo "PASS: RequestContext.ElapsedMs non-negative (" & ctx1.ElapsedMs() & ")"
    Else
        WScript.Echo "FAIL: RequestContext.ElapsedMs negative"
        pass = False
    End If
End If

' --- Two independent contexts must not share correlation IDs or state ---
Dim ctx2
If pass Then
    Set ctx2 = NewContext("/does-not-exist", "GET")
    If ctx1.CorrelationId <> ctx2.CorrelationId Then
        WScript.Echo "PASS: two RequestContext instances have distinct CorrelationIds"
    Else
        WScript.Echo "FAIL: two RequestContext instances produced the same CorrelationId - " & ctx1.CorrelationId
        pass = False
    End If
End If

' --- Application.Run happy path via ctx ---
Dim app, statusLine, contentType, body, allowHeader
If pass Then
    On Error Resume Next
    Set app = CreateObject("WscMvc.Application")
    If Err.Number <> 0 Then
        WScript.Echo "FAIL: could not create WscMvc.Application - " & Err.Description
        pass = False
        Err.Clear
    End If
    On Error Goto 0
End If

If pass Then
    On Error Resume Next
    RunApplication app, "/hello", "GET", "production", statusLine, contentType, body, allowHeader
    If Err.Number <> 0 Then
        WScript.Echo "FAIL: Application.Run raised error on /hello - " & Err.Description
        pass = False
        Err.Clear
    End If
    On Error Goto 0
End If

If pass Then
    CheckEqual statusLine, "200 OK", "Application.Run(/hello) statusLine"
    CheckEqual contentType, "text/html; charset=utf-8", "Application.Run(/hello) contentType"
    CheckEqual body, "Hello from WSC-MVC!", "Application.Run(/hello) body"
    CheckEqual allowHeader, "", "Application.Run(/hello) Allow header"
End If

' --- Application.Run unknown route via ctx (expected 404, not an error) ---
If pass Then
    On Error Resume Next
    RunApplication app, "/does-not-exist", "GET", "production", statusLine, contentType, body, allowHeader
    If Err.Number <> 0 Then
        WScript.Echo "FAIL: Application.Run raised error on unknown route - " & Err.Description
        pass = False
        Err.Clear
    End If
    On Error Goto 0
End If

If pass Then
    CheckEqual statusLine, "404 Not Found", "Application.Run(unknown route) statusLine"
    CheckEqual allowHeader, "", "Application.Run(unknown route) Allow header"
End If

' --- Router method contract: existing route with unsupported method is 405 + Allow ---
If pass Then
    On Error Resume Next
    RunApplication app, "/hello", "POST", "production", statusLine, contentType, body, allowHeader
    If Err.Number <> 0 Then
        WScript.Echo "FAIL: Application.Run raised error on method mismatch - " & Err.Description
        pass = False
        Err.Clear
    End If
    On Error Goto 0
End If

If pass Then
    CheckEqual statusLine, "405 Method Not Allowed", "Application.Run(POST /hello) statusLine"
    CheckEqual contentType, "text/plain; charset=utf-8", "Application.Run(POST /hello) contentType"
    CheckEqual body, "Method Not Allowed", "Application.Run(POST /hello) body"
    CheckEqual allowHeader, "GET", "Application.Run(POST /hello) Allow header"
End If

' --- Router app isolation and POST support for test app route ---
If pass Then
    On Error Resume Next
    RunApplication app, "/self-test", "POST", "tests", statusLine, contentType, body, allowHeader
    If Err.Number <> 0 Then
        WScript.Echo "FAIL: Application.Run raised error on POST /self-test - " & Err.Description
        pass = False
        Err.Clear
    End If
    On Error Goto 0
End If

If pass Then
    CheckEqual statusLine, "200 OK", "Application.Run(POST /self-test tests) statusLine"
    CheckEqual contentType, "application/json; charset=utf-8", "Application.Run(POST /self-test tests) contentType"
    CheckEqual allowHeader, "", "Application.Run(POST /self-test tests) Allow header"
End If

' --- Router malformed path contract ---
If pass Then
    On Error Resume Next
    RunApplication app, "/hello/../secret", "GET", "production", statusLine, contentType, body, allowHeader
    If Err.Number <> 0 Then
        WScript.Echo "FAIL: Application.Run raised error on malformed path - " & Err.Description
        pass = False
        Err.Clear
    End If
    On Error Goto 0
End If

If pass Then
    CheckEqual statusLine, "400 Bad Request", "Application.Run(malformed path) statusLine"
    CheckEqual contentType, "text/plain; charset=utf-8", "Application.Run(malformed path) contentType"
    CheckEqual body, "Bad Request", "Application.Run(malformed path) body"
    CheckEqual allowHeader, "", "Application.Run(malformed path) Allow header"
End If

' --- Logging: best-effort log file was written with both outcomes ---
If pass Then
    Dim logPath, logContent
    logPath = logDir & "\app.log"
    If fso.FileExists(logPath) Then
        Dim logStream
        Set logStream = fso.OpenTextFile(logPath, 1)
        logContent = logStream.ReadAll
        logStream.Close
        If InStr(logContent, "200 OK") > 0 And InStr(logContent, "404 Not Found") > 0 Then
            WScript.Echo "PASS: app.log contains both 200 OK and 404 Not Found outcomes"
        Else
            WScript.Echo "FAIL: app.log missing expected outcomes -> " & logContent
            pass = False
        End If
    Else
        WScript.Echo "FAIL: app.log was not created at " & logPath
        pass = False
    End If
End If

Set app = Nothing
Set ctx1 = Nothing
Set ctx2 = Nothing

If fso.FolderExists(logDir) Then
    fso.DeleteFolder logDir, True
End If
Set fso = Nothing

If pass Then
    WScript.Echo "RESULT: ALL PASS"
    WScript.Quit 0
Else
    WScript.Echo "RESULT: FAILURE"
    WScript.Quit 1
End If