Modul:Get

Die Dokumentation für dieses Modul kann unter Modul:Get/Doku erstellt werden

-- Modul:Get
-- Allgemeiner Zugriff auf strukturierte Daten (Item/Event/Hero/Guardian/…)

local p = {}

local DATA_MODULE = 'Modul:Get/Data'
local data = require(DATA_MODULE)

-- Datei-Existenz prüfen
local function fileExists(name)
    if not name or name == '' then
        return false
    end

    local titleObj = mw.title.makeTitle('File', name)
    if not titleObj then
        return false
    end

    local fileObj = titleObj.file
    if not fileObj or not fileObj.exists then
        return false
    end

    return true
end

-- $1 → title
local function applyPlaceholder(text, title)
    if not text or text == '' then
        return nil
    end

    -- %$1 = literal "$1"
    return text:gsub('%$1', function()
        return title or ''
    end)
end

-- Tooltip + optional Link
local function wrapWithTooltip(labelText, linkTarget, desc, noTooltip)
    if not labelText or labelText == '' then
        return ''
    end

    local out = labelText

    -- Link bauen, falls vorhanden
    if linkTarget and linkTarget ~= '' then
        if linkTarget:match('^%[%[') or linkTarget:match('^%[') then
            -- bereits fertiger Wiki-/Externer Link
            out = linkTarget
        else
            -- interner Link: [[Seite|Label]]
            out = '[[' .. linkTarget .. '|' .. labelText .. ']]'
        end
    end

    -- Tooltip über title-Attribut
    if desc and desc ~= '' and not noTooltip then
        local escDesc = desc:gsub('"', '"')
        out = '<span class="kr-get" title="' .. escDesc .. '">' .. out .. '</span>'
    end

    return out
end

-- Keys normalisieren: trim, lower, Leerzeichen → _
local function normalizeKey(key)
    if not key then
        return nil
    end

    key = mw.text.trim(tostring(key))
    if key == '' then
        return nil
    end

    key = mw.ustring.lower(key)
    key = key:gsub('[%s_]+', '_')
    return key
end

-- Datensatz-Namen (Item/Items, Hero/Heroes…) normalisieren
local function normalizeDatasetKey(datasetRaw)
    local datasetKey = normalizeKey(datasetRaw)
    if not datasetKey then
        return nil
    end

    if datasetKey == 'items' then
        datasetKey = 'item'
    elseif datasetKey == 'events' then
        datasetKey = 'event'
    elseif datasetKey == 'heroes' then
        datasetKey = 'hero'
    elseif datasetKey == 'guardians' then
        datasetKey = 'guardian'
    end

    return datasetKey
end

-- --------------------------------------------------------
-- Hauptfunktion
-- --------------------------------------------------------

function p.main(frame)
    local args       = frame.args
    local datasetRaw = args.dataset or args[1]
    local method     = args.method  or args[2] or 'link'
    local keyRaw     = args.key     or args[3]
    local noTooltip  = args.noTooltip == '1' or args.notooltip == '1'

    local datasetKey = normalizeDatasetKey(datasetRaw)
    local key        = normalizeKey(keyRaw)

    if not datasetKey or not key then
        return ''
    end

    local group = data[datasetKey]
    if not group then
        -- unbekannter Datensatz → gib originalen Key zurück (zerstört Seite nicht)
        return keyRaw or ''
    end

    local raw = group[key]
    if not raw then
        return keyRaw or ''
    end

    local displayKey = keyRaw or key
    local title      = raw.title or displayKey
    local short      = raw.short or title

    -- Platzhalter anwenden
    local desc = applyPlaceholder(raw.desc, title)
    local link = applyPlaceholder(raw.link, title)

    -- Bild bestimmen
    local chosenImg
    if raw.img and fileExists(raw.img) then
        chosenImg = raw.img
    elseif fileExists(title) then
        -- Fallback: Datei mit gleichem Namen wie der Titel
        chosenImg = title
    end

    method = tostring(method):lower()

    if method == 'title' then
        return wrapWithTooltip(title, nil, desc, noTooltip)

    elseif method == 'short' then
        return wrapWithTooltip(short, nil, desc, noTooltip)

    elseif method == 'link' then
        return wrapWithTooltip(short, link, desc, noTooltip)

    elseif method == 'img' then
        if not chosenImg then
            return ''
        end

        local alt = title or ''
        if link and link ~= '' and not link:match('^%[') then
            -- internes Linkziel
            return '[[Datei:' .. chosenImg .. '|link=' .. link .. '|alt=' .. alt .. ']]'
        else
            return '[[Datei:' .. chosenImg .. '|alt=' .. alt .. ']]'
        end

    elseif method == 'desc' then
        return desc or ''

    else
        -- Fallback: wie "link"
        return wrapWithTooltip(short, link, desc, noTooltip)
    end
end

return p