#***************************************************************************
#*   Copyright (c) 2018 Yorik van Havre <yorik@uncreated.net>              *
#*                                                                         *
#*   This program is free software; you can redistribute it and/or modify  *
#*   it under the terms of the GNU Lesser General Public License (LGPL)    *
#*   as published by the Free Software Foundation; either version 2 of     *
#*   the License, or (at your option) any later version.                   *
#*   for detail see the LICENCE text file.                                 *
#*                                                                         *
#*   This program is distributed in the hope that it will be useful,       *
#*   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
#*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
#*   GNU Library General Public License for more details.                  *
#*                                                                         *
#*   You should have received a copy of the GNU Library General Public     *
#*   License along with this program; if not, write to the Free Software   *
#*   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
#*   USA                                                                   *
#*                                                                         *
#***************************************************************************


# This is the start page template. It builds an HTML global variable that
# contains the html code of the start page.
# Note: It is built only once per FreeCAD session for now...

import sys
import os
import tempfile
import time
import zipfile
import re
import FreeCAD
import FreeCADGui
import codecs
import hashlib
import urllib.parse
from . import TranslationTexts
from PySide import QtCore, QtGui

try:
    from addonmanager_macro import Macro as AM_Macro
    has_am_macro = True
except ImportError:
    has_am_macro = False


FreeCADGui.addLanguagePath(":/translations")
FreeCADGui.updateLocale()

iconprovider = QtGui.QFileIconProvider()
iconbank = {}       # store pre-existing icons so we don't overpollute temp dir
tempfolder = None   # store icons inside a subfolder in temp dir
defaulticon = None  # store a default icon for problematic file types


def getThumbnailDir():
    parent_dir = FreeCAD.getUserCachePath()
    return os.path.join(parent_dir, "FreeCADStartThumbnails")


def createThumbnailDir():
    path = getThumbnailDir()
    if not os.path.exists(path):
        os.mkdir(path)
    return path


def getSha1Hash(path, encode="utf-8"):
    sha_hash = hashlib.sha1()
    hashed = hashlib.sha1(path.encode(encode))
    hex_digest = hashed.hexdigest().encode(encode)
    sha_hash.update(hex_digest)
    return sha_hash.hexdigest()


def getUniquePNG(filename):
    parent_dir = getThumbnailDir()
    sha1 = getSha1Hash(filename) + ".png"
    return os.path.join(parent_dir, sha1)


def useCachedPNG(image, project):
    if not os.path.exists(image):
        return False
    if not os.path.exists(project):
        return False

    stamp = os.path.getmtime
    return stamp(image) > stamp(project)


def gethexcolor(color):

    "returns a color hex value #000000"

    r = str(hex(int(((color>>24)&0xFF))))[2:].zfill(2)
    g = str(hex(int(((color>>16)&0xFF))))[2:].zfill(2)
    b = str(hex(int(((color>>8)&0xFF))))[2:].zfill(2)
    return "#"+r+g+b



def isOpenableByFreeCAD(filename):

    "check if FreeCAD can handle this file type"

    if os.path.isdir(filename):
        return False
    if os.path.basename(filename)[0] == ".":
        return False
    extensions = [key.lower() for key in FreeCAD.getImportType().keys()]
    ext = os.path.splitext(filename)[1].lower()
    if ext:
        if ext[0] == ".":
            ext = ext[1:]
    if ext in extensions:
        return True
    return False



def getInfo(filename):

    "returns available file information"

    global iconbank,tempfolder

    tformat = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Start").GetString("TimeFormat","%m/%d/%Y %H:%M:%S")

    def getLocalTime(timestamp):
        "returns a local time from a timestamp"
        return time.strftime(tformat,time.localtime(timestamp))

    def getSize(size):
        "returns a human-readable size"
        if size > 1024*1024:
            hsize = str(int(size/(1024*1024))) + "Mb"
        elif size > 1024:
            hsize = str(int(size/1024)) + "Kb"
        else:
            hsize = str(int(size)) + "b"
        return hsize

    def getFreeDesktopThumbnail(filename):
        "if we have gnome libs available, try to find a system-generated thumbnail"
        path = os.path.abspath(filename)
        thumb = None
        try:
            import gnome.ui
            import gnomevfs
        except Exception:
            # alternative method
            import hashlib
            fhash = hashlib.md5(bytes(urllib.parse.quote("file://"+path,safe=":/"),"ascii")).hexdigest()
            thumb = os.path.join(os.path.expanduser("~"),".thumbnails","normal",fhash+".png")
        else:
            uri = gnomevfs.get_uri_from_local_path(path)
            thumb = gnome.ui.thumbnail_path_for_uri(uri, "normal")
        if thumb and os.path.exists(thumb):
            return thumb
        return None


    if os.path.exists(filename):

        if os.path.isdir(filename):
            return None

        # get normal file info
        s = os.stat(filename)
        size = getSize(s.st_size)
        ctime = getLocalTime(s.st_ctime)
        mtime = getLocalTime(s.st_mtime)
        author = ""
        company = TranslationTexts.T_UNKNOWN
        lic = TranslationTexts.T_UNKNOWN
        image = None
        descr = ""

        # get additional info from fcstd files
        if filename.lower().endswith(".fcstd"):
            try:
                zfile=zipfile.ZipFile(filename)
            except Exception:
                print("Cannot read file: ",filename)
                return None
            files=zfile.namelist()
            # check for meta-file if it's really a FreeCAD document
            if files[0] == "Document.xml":
                try:
                    doc = zfile.read(files[0]).decode('utf-8')
                except OSError as e:
                    print ("Fail to load corrupted FCStd file: '{0}' with this error: {1}".format(filename, str(e)))
                    return None
                doc = doc.replace("\n"," ")
                r = re.findall("Property name=\"CreatedBy.*?String value=\"(.*?)\"/>",doc)
                if r:
                    author = r[0]
                    # remove email if present in author field
                    if "&lt;" in author:
                        author = author.split("&lt;")[0].strip()
                r = re.findall("Property name=\"Company.*?String value=\"(.*?)\"/>",doc)
                if r:
                    company = r[0]
                r = re.findall("Property name=\"License.*?String value=\"(.*?)\"/>",doc)
                if r:
                    lic = r[0]
                r = re.findall("Property name=\"Comment.*?String value=\"(.*?)\"/>",doc)
                if r:
                    descr = r[0]
                if "thumbnails/Thumbnail.png" in files:
                    image_png = getUniquePNG(filename)
                    if filename in iconbank:
                        image = iconbank[filename]
                    elif useCachedPNG(image_png, filename):
                        image = image_png
                        iconbank[filename] = image
                    else:
                        imagedata=zfile.read("thumbnails/Thumbnail.png")
                        image = image_png
                        thumb = open(image,"wb")
                        thumb.write(imagedata)
                        thumb.close()
                        iconbank[filename] = image

        elif filename.lower().endswith(".fcmacro"):
            # For FreeCAD macros, use the Macro Editor icon (but we have to have it in a file for
            # the web view to load it)
            image = os.path.join(tempfolder,"fcmacro_icon.svg")
            if not os.path.exists(image):
                f = QtCore.QFile(":/icons/MacroEditor.svg")
                f.copy(image)
            iconbank[filename] = image

            if has_am_macro:
                macro = AM_Macro(os.path.basename(filename))
                macro.fill_details_from_file(filename)
                author = macro.author

        elif QtGui.QImageReader.imageFormat(filename):
            # use image itself as icon if it's an image file
            image = filename
            iconbank[filename] = image

        else:
            # use freedesktop thumbnail if available
            fdthumb = getFreeDesktopThumbnail(filename)
            if fdthumb:
                image = fdthumb
                iconbank[filename] = fdthumb

        # retrieve default mime icon if needed
        if not image:
            i = QtCore.QFileInfo(filename)
            t = iconprovider.type(i)
            filename_png = getUniquePNG(filename)
            if not t:
                t = "Unknown"
            if t in iconbank:
                image = iconbank[t]
            elif os.path.exists(filename_png):
                image = filename_png
                iconbank[t] = image
            else:
                icon = iconprovider.icon(i)
                if icon.availableSizes():
                    preferred = icon.actualSize(QtCore.QSize(128,128))
                    px = icon.pixmap(preferred)
                    image = filename_png
                    px.save(image)
                else:
                    image = getDefaultIcon()
                iconbank[t] = image
        return [image,size,author,ctime,mtime,descr,company,lic]

    return None



def getDefaultIcon():

    "retrieves or creates a default file icon"

    global defaulticon

    if not defaulticon:
        i = QtCore.QFileInfo(__file__) # MUST provide an existing file in qt5
        icon = iconprovider.icon(i)
        preferred = icon.actualSize(QtCore.QSize(128,128))
        px = icon.pixmap(preferred)
        image = getUniquePNG("default_icon")
        px.save(image)
        defaulticon = image

    return defaulticon



def buildCard(filename,method,arg=None):

    """builds an html <li> element representing a file.
    method is a script + a keyword, for ex. url.py?key="""

    result = ""
    if os.path.exists(filename) and isOpenableByFreeCAD(filename):
        basename = os.path.basename(filename)
        if not arg:
            arg = basename
        finfo = getInfo(filename)
        if finfo:
            image = finfo[0]
            size = finfo[1]
            author = finfo[2]
            infostring = TranslationTexts.T_CREATIONDATE+": "+finfo[3] + "\n"
            infostring += TranslationTexts.T_LASTMODIFIED+": "+finfo[4]
            if finfo[5]:
                infostring += "\n\n" + finfo[5]
            if size:
                result += '<li class="icon">'
                result += '<a href="'+method+urllib.parse.quote(arg)+'" title="'+infostring+'">'
                result += '<img src="file:///'+image.replace('\\','/')+'" alt="'+basename+'">'
                result += '<div class="caption">'
                result += '<h4>'+basename+'</h4>'
                result += '<p>'+author+'</p>'
                result += '<p>'+size+'</p>'
                result += '</div>'
                result += '</a>'
                result += '</li>'
    return result



def handle():

    "builds the HTML code of the start page"

    global iconbank,tempfolder

    # reuse stuff from previous runs to reduce temp dir clutter

    import Start
    if hasattr(Start,"iconbank"):
        iconbank = Start.iconbank
    if hasattr(Start,"tempfolder"):
        tempfolder = Start.tempfolder
    else:
        tempfolder = createThumbnailDir()

    # build the html page skeleton

    resources_dir = os.path.join(FreeCAD.getResourceDir(), "Mod", "Start", "StartPage")
    p = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Start")
    template = p.GetString("Template","")
    if template:
        html_filename = template
    else:
        html_filename = os.path.join(resources_dir, "StartPage.html")
    js_filename = os.path.join(resources_dir, "StartPage.js")
    css_filename = p.GetString("CSSFile",os.path.join(resources_dir, "StartPage.css"))
    with open(html_filename, 'r') as f:
        HTML = f.read()
    with open(js_filename, 'r') as f:
        JS = f.read()
    with open(css_filename, 'r') as f:
        CSS = f.read()
    HTML = HTML.replace("JS",JS)
    HTML = HTML.replace("CSS",CSS)

    # set the language

    HTML = HTML.replace("BCP47_LANGUAGE",QtCore.QLocale().bcp47Name())

    # get the stylesheet if we are using one

    if FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Start").GetBool("UseStyleSheet",False):
        qssfile = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/MainWindow").GetString("StyleSheet","")
        if qssfile:
            # Search for stylesheet in user, system and resources locations
            user = os.path.join(FreeCAD.getUserAppDataDir(), "Gui", "Stylesheets")
            system = os.path.join(FreeCAD.getResourceDir(), "Gui", "Stylesheets")
            resources = ":/stylesheets"

            res = False
            if QtCore.QFile.exists(os.path.join(user, qssfile)):
                path = os.path.join(user, qssfile)
            elif QtCore.QFile.exists(os.path.join(system, qssfile)):
                path = os.path.join(system, qssfile)
            elif QtCore.QFile.exists(os.path.join(resources, qssfile)):
                res = True
                path = os.path.join(resources, qssfile)
            else:
                path = None

            if path:
                if res:
                    f = QtCore.QFile(path)
                    if f.open(QtCore.QIODevice.ReadOnly | QtCore.QFile.Text):
                        ALTCSS = QtCore.QTextStream(f).readAll()
                        HTML = HTML.replace("<!--QSS-->","<style type=\"text/css\">"+ALTCSS+"</style>")
                else:
                    with codecs.open(path, encoding='utf-8') as f:
                        ALTCSS = f.read()
                        HTML = HTML.replace("<!--QSS-->","<style type=\"text/css\">"+ALTCSS+"</style>")

    # turn tips off if needed

    if not FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Start").GetBool("ShowTips",True):
        HTML = HTML.replace("display: block; /* footnote tips display */","display: none; /* footnote tips display */")

    # get FreeCAD version

    v = FreeCAD.Version()
    VERSIONSTRING = TranslationTexts.T_VERSION + " " + v[0] + "." + v[1] + "." + v[2] +" " + TranslationTexts.T_BUILD + " " + v[3]
    HTML = HTML.replace("VERSIONSTRING",VERSIONSTRING)

    # translate texts

    texts = [t for t in dir(TranslationTexts) if t.startswith("T_")]
    for text in texts:
        HTML = HTML.replace(text,getattr(TranslationTexts,text))

    # build a "create new" icon with the FreeCAD background color gradient

    if not "createimg" in iconbank:
        p = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/View")
        c1 = gethexcolor(p.GetUnsigned("BackgroundColor2"))
        c2 = gethexcolor(p.GetUnsigned("BackgroundColor3"))
        gradient = QtGui.QLinearGradient(0, 0, 0, 128)
        gradient.setColorAt(0.0, QtGui.QColor(c1))
        gradient.setColorAt(1.0, QtGui.QColor(c2))
        i = QtGui.QImage(128,128,QtGui.QImage.Format_RGB16)
        pa = QtGui.QPainter(i)
        pa.fillRect(i.rect(),gradient)
        pa.end()
        createimg = getUniquePNG("createimg")
        i.save(createimg)
        iconbank["createimg"] = createimg

    # build SECTION_RECENTFILES

    rf = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/RecentFiles")
    rfcount = rf.GetInt("RecentFiles",0)
    SECTION_RECENTFILES = "<h2>"+TranslationTexts.T_RECENTFILES+"</h2>"
    SECTION_RECENTFILES += "<ul>"
    SECTION_RECENTFILES += '<li class="icon">'
    SECTION_RECENTFILES += '<a href="LoadNew.py" title="'+TranslationTexts.T_CREATENEW+'">'
    if FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Start").GetBool("NewFileGradient",False):
        SECTION_RECENTFILES += '<img src="file:///'+iconbank["createimg"].replace('\\','/')+'" alt="'+TranslationTexts.T_CREATENEW+'">'
    else:
        SECTION_RECENTFILES += '<img src="file:///'+os.path.join(resources_dir, "images/new_file_thumbnail.svg").replace('\\','/')+'" alt="'+TranslationTexts.T_CREATENEW+'">'
    SECTION_RECENTFILES += '<div class="caption">'
    SECTION_RECENTFILES += '<h4>'+TranslationTexts.T_CREATENEW+'</h4>'
    SECTION_RECENTFILES += '</div>'
    SECTION_RECENTFILES += '</a>'
    SECTION_RECENTFILES += '</li>'
    for i in range(rfcount):
        filename = rf.GetString("MRU%d" % (i))
        SECTION_RECENTFILES += buildCard(filename,method="LoadMRU.py?MRU=",arg=str(i))
    SECTION_RECENTFILES += '</ul>'
    HTML = HTML.replace("SECTION_RECENTFILES",SECTION_RECENTFILES)

    # build SECTION_EXAMPLES

    SECTION_EXAMPLES = ""
    if FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Start").GetBool("ShowExamples",True):
        SECTION_EXAMPLES = "<h2>"+TranslationTexts.T_EXAMPLES+"</h2>"
        SECTION_EXAMPLES += "<ul>"
        examples_path = FreeCAD.getResourceDir()+"examples"
        if os.path.exists(examples_path):
            examples = os.listdir(examples_path)
            for basename in examples:
                filename = FreeCAD.getResourceDir()+"examples"+os.sep+basename
                SECTION_EXAMPLES += buildCard(filename,method="LoadExample.py?filename=")
        SECTION_EXAMPLES += "</ul>"
    HTML = HTML.replace("SECTION_EXAMPLES",SECTION_EXAMPLES)

    # build SECTION_CUSTOM

    SECTION_CUSTOM = ""
    cfolders = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Start").GetString("ShowCustomFolder","")
    if cfolders:
        dn = 0
        for cfolder in cfolders.split(";;"): # allow several paths separated by ;;
            if not os.path.isdir(cfolder):
                cfolder = os.path.dirname(cfolder)
            if not os.path.exists(cfolder):
                FreeCAD.Console.PrintWarning("Custom folder not found: %s" % cfolder)
            else:
                SECTION_CUSTOM += "<h2>"+os.path.basename(os.path.normpath(cfolder))+"</h2>"
                SECTION_CUSTOM += "<ul>"
                for basename in os.listdir(cfolder):
                    filename = os.path.join(cfolder,basename)
                    SECTION_CUSTOM += buildCard(filename,method="LoadCustom.py?filename="+str(dn)+"_")
                SECTION_CUSTOM += "</ul>"
                # hide the custom section tooltip if custom section is set (users know about it if they enabled it)
                HTML = HTML.replace("id=\"customtip\" class","id=\"customtip\" style=\"display:none;\" class")
                dn += 1
    HTML = HTML.replace("SECTION_CUSTOM",SECTION_CUSTOM)

    # build IMAGE_SRC paths

    HTML = HTML.replace("IMAGE_SRC_USERHUB",'file:///'+os.path.join(resources_dir, 'images/userhub.png').replace('\\','/'))
    HTML = HTML.replace("IMAGE_SRC_POWERHUB",'file:///'+os.path.join(resources_dir, 'images/poweruserhub.png').replace('\\','/'))
    HTML = HTML.replace("IMAGE_SRC_DEVHUB",'file:///'+os.path.join(resources_dir, 'images/developerhub.png').replace('\\','/'))
    HTML = HTML.replace("IMAGE_SRC_MANUAL",'file:///'+os.path.join(resources_dir, 'images/manual.png').replace('\\','/'))
    HTML = HTML.replace("IMAGE_SRC_SETTINGS",'file:///'+os.path.join(resources_dir, 'images/settings.png').replace('\\','/'))
    HTML = HTML.replace("IMAGE_SRC_INSTALLED",'file:///'+os.path.join(resources_dir, 'images/installed.png').replace('\\','/'))

    # build UL_WORKBENCHES

    wblist = []
    UL_WORKBENCHES = '<ul class="workbenches">'
    FreeCAD.getResourceDir()
    for wb in sorted(FreeCADGui.listWorkbenches().keys()):
        if wb.endswith("Workbench"):
            wn = wb[:-9]
        else:
            wn = wb
        # fixes for non-standard names
        if wn == "flamingoTools":
            wn = "flamingo"
        elif wn == "Geodat":
            wn = "geodata"
        elif wn == "a2p":
            wn = "A2plus"
        elif wn == "ArchTexture":
            wn = "ArchTextures"
        elif wn == "CadQuery":
            wn = "cadquery_module"
        elif wn == "DefeaturingWB":
            wn = "Defeaturing"
        elif wn == "ksuWB":
            wn = "kicadStepUp"
        elif wn == "ManipulatorWB":
            wn = "Manipulator"
        elif wn == "PartOMagic":
            wn = "Part-o-magic"
        elif wn == "SM":
            wn = "sheetmetal"
        elif wn == "gear":
            wn = "FCGear"
        elif wn == "frame_":
            wn = "frame"
        elif wn == "ReverseEngineering":
            wn = "Reverse_Engineering"
        elif wn == "None":
            continue
        wblist.append(wn.lower())
        if wb in iconbank:
            img = iconbank[wb]
        else:
            img = os.path.join(FreeCAD.getResourceDir(),"Mod",wn,"Resources","icons",wn+"Workbench.svg")
            if not os.path.exists(img):
                w = FreeCADGui.listWorkbenches()[wb]
                if hasattr(w,"Icon") and w.Icon:
                    xpm = w.Icon
                    if "XPM" in xpm:
                        xpm = xpm.replace("\n        ","\n") # some XPMs have some indent that QT doesn't like
                        r = [s[:-1].strip('"') for s in re.findall("(?s){(.*?)};",xpm)[0].split("\n")[1:]]
                        p = QtGui.QPixmap(r)
                        p = p.scaled(24,24)
                        img = getUniquePNG(wb)
                        p.save(img)
                    else:
                        img = xpm
                else:
                    img = os.path.join(resources_dir,"images/freecad.png")
            iconbank[wb] = img
        UL_WORKBENCHES += '<li>'
        UL_WORKBENCHES += '<img src="file:///'+img.replace('\\','/')+'" alt="'+wn+'">&nbsp;'
        UL_WORKBENCHES += '<a href="https://www.freecad.org/wiki/'+wn+'_Workbench">'+wn.replace("Reverse_Engineering","ReverseEng")+'</a>'
        UL_WORKBENCHES += '</li>'
    UL_WORKBENCHES += '</ul>'
    HTML = HTML.replace("UL_WORKBENCHES", UL_WORKBENCHES)

    # Detect additional addons that are not a workbench

    try:
        import dxfLibrary
    except Exception:
        pass
    else:
        wblist.append("dxf-library")
    try:
        import RebarTools
    except Exception:
        pass
    else:
        wblist.append("reinforcement")
    try:
        import CADExchangerIO
    except Exception:
        pass
    else:
        wblist.append("cadexchanger")
    HTML = HTML.replace("var wblist = [];","var wblist = " + str(wblist) + ";")

    # set and replace colors and font settings

    p = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Start")
    if p.GetString("BackgroundImage",""):
        BACKGROUND = gethexcolor(p.GetUnsigned("BackgroundColor1",1331197183))+" url("+p.GetString("BackgroundImage","")+")"
    else:
        BACKGROUND = gethexcolor(p.GetUnsigned("BackgroundColor1",1331197183))
        # linear gradient not supported by QT "linear-gradient("+gethexcolor(p.GetUnsigned("BackgroundColor1",1331197183))+","+gethexcolor(p.GetUnsigned("BackgroundColor2",2141107711))+")"
    LINKCOLOR = gethexcolor(p.GetUnsigned("LinkColor",65535))
    BASECOLOR = gethexcolor(p.GetUnsigned("PageColor",4294967295))
    BOXCOLOR  = gethexcolor(p.GetUnsigned("BoxColor",3722305023))
    TEXTCOLOR = gethexcolor(p.GetUnsigned("PageTextColor",255))
    BGTCOLOR = gethexcolor(p.GetUnsigned("BackgroundTextColor",4294703103))
    OVERFLOW = "" if p.GetBool("ShowScrollBars",True) else "body::-webkit-scrollbar {display: none;}"
    SHADOW = "#888888"
    if QtGui.QColor(BASECOLOR).valueF() < 0.5: # dark page - we need to make darker shadows
        SHADOW = "#000000"
    FONTFAMILY = p.GetString("FontFamily","Arial,Helvetica,sans")
    if not FONTFAMILY:
        FONTFAMILY = "Arial,Helvetica,sans"
    FONTSIZE = p.GetInt("FontSize",13)
    HTML = HTML.replace("BASECOLOR",BASECOLOR)
    HTML = HTML.replace("BOXCOLOR",BOXCOLOR)
    HTML = HTML.replace("LINKCOLOR",LINKCOLOR)
    HTML = HTML.replace("TEXTCOLOR",TEXTCOLOR)
    HTML = HTML.replace("BGTCOLOR",BGTCOLOR)
    HTML = HTML.replace("BACKGROUND",BACKGROUND)
    HTML = HTML.replace("SHADOW",SHADOW)
    HTML = HTML.replace("FONTFAMILY",FONTFAMILY)
    HTML = HTML.replace("FONTSIZE",str(FONTSIZE)+"px")
    HTML = HTML.replace("OVERFLOW",OVERFLOW)

    # enable web access if permitted

    if FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Start").GetBool("AllowDownload",False):
        HTML = HTML.replace("var allowDownloads = 0;","var allowDownloads = 1;")

    # enable or disable forum

    if FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Start").GetBool("ShowForum",False):
        HTML = HTML.replace("var showForum = 0;","var showForum = 1;")
        HTML = HTML.replace("display: none; /* forum display */","display: block; /* forum display */")

    # enable or disable notepad

    if FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Start").GetBool("ShowNotes",False):
        HTML = HTML.replace("display: none; /* notes display */","display: block; /* notes display */")
        HTML = HTML.replace("width: 100%; /* thumbs display */","width: 70%; /* thumbs display */")

    # store variables for further use

    Start.iconbank = iconbank
    Start.tempfolder = tempfolder

    return HTML



def exportTestFile():

    "Allow to check if everything is Ok"

    with codecs.open(
        os.path.expanduser("~") + os.sep + "freecad-startpage.html",
        encoding="utf-8",
        mode="w",
    ) as f:
        f.write(handle())
        f.close()



def postStart():

    "executes needed operations after loading a file"

    param = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Start")

    # switch workbench
    wb = param.GetString("AutoloadModule","")
    if "$LastModule" == wb:
        wb = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/General").GetString("LastModule","")
    if wb:
        # don't switch workbenches if we are not in Start anymore
        if FreeCADGui.activeWorkbench() and (FreeCADGui.activeWorkbench().name() == "StartWorkbench"):
            FreeCADGui.activateWorkbench(wb)

    # close start tab
    cl = param.GetBool("closeStart",False)
    if cl:
        title = QtGui.QApplication.translate("Workbench","Start page")
        mw = FreeCADGui.getMainWindow()
        if mw:
            mdi = mw.findChild(QtGui.QMdiArea)
            if mdi:
                for mdichild in mdi.children():
                    for subw in mdichild.findChildren(QtGui.QMdiSubWindow):
                        if subw.windowTitle() == title:
                            subw.close()



def checkPostOpenStartPage():

    "on Start WB startup, check if we are loading a file and therefore need to close the StartPage"

    import Start
    if FreeCAD.ParamGet('User parameter:BaseApp/Preferences/Mod/Start').GetBool('DoNotShowOnOpen',False) and (not hasattr(Start,'CanOpenStartPage')):
        if len(sys.argv) > 1:
            postStart()
    Start.CanOpenStartPage = True