I promise you that the font _is_ there. :(

Question

OK, so I am having problems dynamically managing fonts in an automated build process.
To be clear;
a) I have a font
b) I really, really, really _know_ that I have this font
c) I checked again, the font _is_ there
Having checked all that, I search for the font using app.fonts.itemByName(fontName) and then try to _use_ the font that I _know_ that I have.
It works for roughly 650 out of 710 fonts.
For the others... I just see "The requested font style is not available."
_WHY_?
_WHY_?
Please, please, please...
Anybody?
Thanks,
G
found.fontFamily : Baskerville
found.fontStyleName : Regular
found.fontStyleNameNative : Regular
found.fontType : 1718898516(OPENTYPE_TT)
found.fullName : Baskerville
found.fullNameNative : Baskerville
found.index : -1
found.isValid : true
found.location : C:\Program Files\Adobe\Adobe InDesign CC 2014\Fonts\Baskerville.ttf
found.name : Baskerville
Regular
found.ordering :
found.parent : [object Application]
found.platformName : Baskerville
found.postscriptName : Baskerville
found.properties : [object Object]
found.registry :
found.restrictedPrinting : false
found.status : 1718831470 (ok)
found.version : Version 1.00
found.writingScript : 0
ERROR: {"fileName": "printFinal.jsx", "lineNumber": "368", "templateId": "TEMPLATE", "message": "The requested font style is not available.", "inputArguments": {}}
[code]
var found = app.fonts.itemByName(cleanedFontFamily);
                function writeFontType(val) {
                    switch(val) {
                        case FontTypes.ATC : return "ATC";
                        case FontTypes.BITMAP: return "BITMAP";
                        case FontTypes.CID : return "CID";
                        case FontTypes.OPENTYPE_CFF : return "OPENTYPE_CFF";
                        case FontTypes.OPENTYPE_CID : return "OPENTYPE_CID";
                        case FontTypes.OPENTYPE_TT : return "OPENTYPE_TT";
                        case FontTypes.TRUETYPE : return "TRUETYPE";
                        case FontTypes.TYPE_1 : return "TYPE_1";
                        case FontTypes.UNKNOWN : return "UNKNOWN";
                    return "unknown";
                this.debug("\tNATIVE:\n\t"+[
"found.fontFamily : "+found.fontFamily,
"found.fontStyleName : "+found.fontStyleName,
"found.fontStyleNameNative : "+found.fontStyleNameNative,
"found.fontType : "+found.fontType+"("+(writeFontType(found.fontType))+")",
"found.fullName : "+found.fullName,
"found.fullNameNative : "+found.fullNameNative,
"found.index : "+found.index,
"found.isValid : "+found.isValid,
"found.location : "+found.location,
"found.name : "+found.name,
"found.ordering : "+found.ordering,
"found.parent : "+found.parent,
"found.platformName : "+found.platformName,
"found.postscriptName : "+found.postscriptName,
"found.properties : "+found.properties,
"found.registry : "+found.registry,
"found.restrictedPrinting : "+found.restrictedPrinting,
"found.status : "+found.status+" ("+(found.status==FontStatus.INSTALLED?"ok":"investigate")+")",
"found.version : "+found.version,
"found.writingScript : "+found.writingScript
                ].join("\n\t"));
                style.appliedFont = found;
[/code]

Answer 1

Hi Marc,
First of all, thanks a million for correcting my font reference name - I couldn't find any documentation on what it should have been so I tried a few things and ended up using what my predecessors had used (which was... wrong). I've now corrected the lookup to use the correct format and I have eliminated about 90% of my font lookup issues.
Which means that I am left with the tricky ones.
Taking the Baskerville font as an example;
1. I am importing a snippet with IDML stating appliedFont = Baskerville
2. When I test the relevant style ranges, they are reporting appliedFont = Baskerville (TT)
3. If I look for app.fonts.itemByName("Baskerville (TT)\tRegular") I get index = -1; (thanks for giving me that test for font install also!) and font is not found
4. If I look for app.fonts.itemByName("Baskerville\tRegular") I get a valid index and no error when I try to use the font... But...
5. Whatever I do, the preflight fails with uninstalledFonts "Baskerville (TT)"
I've dug a little deeper here; I saved as IDML, and looked at the fonts.xml file; there are two Baskerville fonts listed... and there shouldn't be. I can _manually_ edit the Fonts.xml file in IDML then open in InDesign and save as INDD... _then_ my scripted build process works.
But...
I can't do that across the millions (literally) of legacy INDD files that I have running around here.
Any ideas how to eradicate broken font references like this without manually editing IDML / XML?
Thanks,
G