<%
Class AreasController_Class
    Private m_useLayout
    Private m_title

    Private Sub Class_Initialize()
        m_useLayout = True
        m_title = "Areas"
    End Sub

    Public Property Get useLayout
        useLayout = m_useLayout
    End Property

    Public Property Let useLayout(v)
        m_useLayout = v
    End Property

    Public Property Get Title
        Title = m_title
    End Property

    Public Property Let Title(v)
        m_title = v
    End Property

    '-------------------------------------------------------------------------------------------------------------------
    ' GET /areas
    '-------------------------------------------------------------------------------------------------------------------
    Public Sub index()
        Dim list, unassigned, csrf
        Set list = AreaRepository().All()
        unassigned = AreaRepository().UnassignedCount()
        csrf = Csrf_Token("areas")
    %>
    <!--#include file="../views/Areas/index.asp" -->
    <%
    End Sub

    '-------------------------------------------------------------------------------------------------------------------
    ' POST /areas/create
    '-------------------------------------------------------------------------------------------------------------------
    Public Sub create()
        Dim name
        GuardCsrf
        name = Left(Trim(F("name")), 100)
        If Len(name) = 0 Then Fail "Enter an area name."
        If AreaRepository().NameTaken(name, 0) Then Fail """" & name & """ already exists."
        AreaRepository().Create name
        Flash().Success = "Added """ & name & """."
        Response.Redirect "/areas"
    End Sub

    '-------------------------------------------------------------------------------------------------------------------
    ' POST /areas/:id/rename
    '-------------------------------------------------------------------------------------------------------------------
    Public Sub rename(id)
        Dim area, name
        Set area = Load(id)
        name = Left(Trim(F("name")), 100)
        If Len(name) = 0 Then Fail "The name can't be blank."
        If AreaRepository().NameTaken(name, area("id")) Then
            Fail """" & name & """ already exists. Use Merge to combine them."
        End If
        AreaRepository().Rename area("id"), name
        Flash().Success = "Renamed to """ & name & """."
        Response.Redirect "/areas"
    End Sub

    '-------------------------------------------------------------------------------------------------------------------
    ' POST /areas/:id/merge : move every business from this area into another one, then delete this one
    '-------------------------------------------------------------------------------------------------------------------
    Public Sub merge(id)
        Dim area, target, moved
        Set area = Load(id)
        If Not Valid_Id(F("target_id")) Then Fail "Choose the area to merge into."
        If CLng(F("target_id")) = area("id") Then Fail "Choose a different area to merge into."
        Set target = AreaRepository().Find(CLng(F("target_id")))
        If target Is Nothing Then Fail "That area no longer exists."
        moved = AreaRepository().Merge(area("id"), target("id"))
        Flash().Success = "Merged """ & area("name") & """ into """ & target("name") & """ (" & moved & " businesses moved)."
        Response.Redirect "/areas"
    End Sub

    '-------------------------------------------------------------------------------------------------------------------
    ' POST /areas/:id/delete : only when no business is in it
    '-------------------------------------------------------------------------------------------------------------------
    Public Sub delete(id)
        Dim area
        Set area = Load(id)
        If area("n") > 0 Then Fail "Can't delete """ & area("name") & """ while " & area("n") & " businesses are in it. Merge it instead."
        AreaRepository().Delete area("id")
        Flash().Success = "Deleted """ & area("name") & """."
        Response.Redirect "/areas"
    End Sub

    '-------------------------------------------------------------------------------------------------------------------
    Private Function Load(id)
        GuardCsrf
        If Not Valid_Id(id) Then Response.Redirect "/404"
        Dim area : Set area = AreaRepository().Find(CLng(id))
        If area Is Nothing Then Response.Redirect "/404"
        Set Load = area
    End Function

    Private Sub GuardCsrf()
        If Not Csrf_Valid("areas", F("csrf")) Then Fail "Invalid form state. Please try again."
    End Sub

    Private Sub Fail(msg)
        Flash().AddError msg
        Response.Redirect "/areas"
    End Sub

    Private Function F(name)
        F = CStr(Request.Form(name))
    End Function

End Class

Dim AreasController_Class__Singleton
Function AreasController()
    If IsEmpty(AreasController_Class__Singleton) Then
        Set AreasController_Class__Singleton = New AreasController_Class
    End If
    Set AreasController = AreasController_Class__Singleton
End Function
%>