Editing Module:Json parameter test

local p = {}

function p.generateClassLists(frame)
    -- JSON-Daten in einem Lua-String von den übergebenen Argumenten abrufen
    -- local jsonData = frame.args.jsonData -- Benannter Parameter "json"
    -- JSON-Daten in einem Lua-String von der Parserfunktion abrufen
    local jsonData = frame:callParserFunction('#visualdataquery:[[unique title::+]]', { '?articleid', schema = 'Data classes', format = 'json-raw' })
    -- local jsonData = frame:preprocess('{{#visualdataquery:[[unique title::+]]|?articleid|schema = Data classes|format = json-raw}}') 
    -- local jsonData = '[{"pagetitle":"Classes/Gender","data":{"unique title":"Classes/Gender","title":"Gender","class names":["female","male","diverse"]}},{"pagetitle":"Classes/Age","data":{"unique title":"Classes/Age","title":"Age","class names":["0 - 14","15 - 29","30 - 44","45 - 59","60 +"]}},{"pagetitle":"Classes/Districts","data":{"unique title":"Classes/Districts","title":"Districts","class names":["District 1","District 2","District 3","District 4"]}},{"pagetitle":"Classes/Test classes","data":{"unique title":"Entry:Classes/Test classes","title":"Test classes","class names":["Class 1","Class 2"]}},{"pagetitle":"Classes/Test sub-classes","data":{"unique title":"Entry:Classes/Test sub-classes","title":"Test sub-classes","class names":["Sub-class 1","Sub-class 2"]}},{"pagetitle":"Classes/Test sub-sub classes 1","data":{"unique title":"Entry:Classes/Test sub-sub classes_1","title":"Test sub-sub classes","class names":["Sub-sub class 1","Sub-sub class 2"]}},{"pagetitle":"Classes/School districts","data":{"unique title":"Entry:Classes/School districts","title":"School districts","class names":["School district 1","School district 2","School district 3"]}},{"pagetitle":"Classes/Schools","data":{"unique title":"Entry:Classes/Schools","title":"Schools","class names":["School 1","School 2","School 3","School 4"]}},{"pagetitle":"Classes/School classes","data":{"unique title":"Entry:Classes/School classes","title":"School classes","class names":["Class 1","Class 2","Class 3","Class 4","Class 5","Class 6","Class 7","Class 8","Class 9","Class 10"]}}]'
	
    -- Überprüfe, ob jsonData gültig ist
    if not jsonData or jsonData == '' then
        return "No JSON-Data received. <br/><br/>"
    end

    -- Debug: Gib die empfangenen JSON-Daten aus
    local debugInfo = "'''Received JSON Data: '''" .. tostring(jsonData) .. " <br/><br/>"

    -- Entferne führende und nachfolgende Leerzeichen
    jsonData = mw.text.trim(jsonData)
    
    -- Ersetze nicht druckbare Zeichen durch sichtbare Platzhalter für Debug-Zwecke
    local jsonDataVisible = jsonData:gsub("%c", function(c) return string.format("\\x%02X", string.byte(c)) end)
    debugInfo = debugInfo .. "'''Visible JSON Data: '''" .. jsonDataVisible .. " <br/><br/>"

    -- Entferne Platzhalter und unstrip
    -- jsonData = mw.text.killMarkers(jsonData)
    -- jsonData = mw.text.unstrip(jsonData)
    
    
    debugInfo = debugInfo .. "'''JSON Data Dump: '''" .. mw.dumpObject(jsonData) .. " <br/><br/>"

    -- Debug: Gib die bereinigten JSON-Daten aus
    debugInfo = debugInfo .. "'''Cleaned JSON Data: '''" .. jsonData .. " <br/><br/>"

    -- JSON-Daten in Lua-Tabelle umwandeln
    local success, json = pcall(mw.text.jsonDecode, jsonData)
    if not success then
        return debugInfo .. "'''Error decoding the JSON data: '''" .. tostring(json)
    end

    debugInfo = debugInfo .. "'''Decoded JSON Data: '''" .. mw.dumpObject(json) .. " <br/><br/>"

    local result = {}

    for _, item in ipairs(json) do
        local title = item.data.title
        local classNames = item.data["class names"]
        table.insert(result, "== " .. title .. " ==")
        table.insert(result, "* " .. table.concat(classNames, " <br/><br/>* "))
    end

    return debugInfo .. table.concat(result, " <br/><br/>")
end

return p