local Filename = {}
local lib = require('Module:Feature')
 
function Filename.ability(frame)
    local args; if frame.args == nil then args = lib.arguments(frame) else args = lib.arguments(frame.args) end
    return handleArgs(args, mw.text.trim(encode(formatnil('%s.png', args['ability'] or args[1]) or 'Placeholder.svg')))
end
 
function Filename.champion(frame)
    local args; if frame.args == nil then args = lib.arguments(frame) else args = lib.arguments(frame.args) end
    return handleArgs(args, mw.text.trim(encode(formatnil('%sSquare.png', args['champion'] or args[1]) or 'ChampionSquare.png')))
end
 
function Filename.championcircle(frame)
    local args; if frame.args == nil then args = lib.arguments(frame) else args = lib.arguments(frame.args) end
    return handleArgs(args, mw.text.trim(encode(formatnil('%s %sCircle.png', args['champion'] or args[1], string.gsub(args['skin'] or args[2] or 'Original', ' ', '')) or 'ChampionSquare.png')))
end
 
function Filename.chroma(frame)
    local args; if frame.args == nil then args = lib.arguments(frame) else args = lib.arguments(frame.args) end
    return handleArgs(args, mw.text.trim(encode(formatnil('%s %s (%s).png', args['champion'] or args[1], args['skin'] or args[2] or 'Original', args['chroma'] or args[3]) or 'Placeholder.svg')))
end
 
function Filename.item(frame)
    local args; if frame.args == nil then args = lib.arguments(frame) else args = lib.arguments(frame.args) end
    return handleArgs(args, mw.text.trim(encode(formatnil('%s (%s) item.png', args['item'] or args[1], args['enchantment'] or args[2]) or formatnil('%s item.png', args['item'] or args[1]) or 'Placeholder.svg')))
end
 
function Filename.loading(frame)
    local args; if frame.args == nil then args = lib.arguments(frame) else args = lib.arguments(frame.args) end
    return handleArgs(args, mw.text.trim(encode(formatnil('%s %sLoading.jpg', args['champion'] or args[1], args['skin'] or args[2] or 'Original') or 'Champion SkinLoading.jpg')))
end
 
function Filename.mastery(frame)
    local args; if frame.args == nil then args = lib.arguments(frame) else args = lib.arguments(frame.args) end
    return handleArgs(args, mw.text.trim(encode(formatnil('%s mastery %d.png', args['mastery'] or args[1], tonumber(args['season'] or args[2])) or 'Placeholder.svg')))
end
 
function Filename.monster(frame)
    local args; if frame.args == nil then args = lib.arguments(frame) else args = lib.arguments(frame.args) end
    return handleArgs(args, mw.text.trim(encode(formatnil('%sSquare.png', args['monster'] or args[1]) or 'Placeholder.svg')))
end
 
function Filename.rune(frame)
    local args; if frame.args == nil then args = lib.arguments(frame) else args = lib.arguments(frame.args) end
    return handleArgs(args, mw.text.trim(encode(formatnil('%s rune.png', args['rune'] or args[1]) or 'Placeholder.svg')))
end
 
function Filename.runeold(frame)
    local args; if frame.args == nil then args = lib.arguments(frame) else args = lib.arguments(frame.args) end
    return handleArgs(args, mw.text.trim(encode(formatnil('%s %s %d.png', args['stat'] or args[1], args['rune'] or args[2], tonumber(args['tier'] or args[3])) or 'Placeholder.svg')))
end
 
function Filename.skin(frame)
    local args; if frame.args == nil then args = lib.arguments(frame) else args = lib.arguments(frame.args) end
    return handleArgs(args, mw.text.trim(encode(formatnil('%s %sSkin.jpg', args['champion'] or args[1], args['skin'] or args[2] or 'Original') or 'Champion SkinSkin.jpg')))
end
 
function Filename.spell(frame)
    local args; if frame.args == nil then args = lib.arguments(frame) else args = lib.arguments(frame.args) end
    return handleArgs(args, mw.text.trim(encode(formatnil('%s.png', args['spell'] or args[1]) or 'Placeholder.svg')))
end
 
function Filename.ward(frame)
    local args; if frame.args == nil then args = lib.arguments(frame) else args = lib.arguments(frame.args) end
    return handleArgs(args, mw.text.trim(encode(formatnil('%s Ward.png', args['ward'] or args[1]) or 'Placeholder.svg')))
end
 
function Filename.encode(frame)
    return mw.text.trim(encode(frame.args[1]))
end
 
function handleArgs(args, filename)
    local result = filename
    if args['prefix'] then filename = args['prefix'] .. filename end
    if args['suffix'] then filename = filename .. args['suffix'] end
    if args['parse'] then filename = mw.getCurrentFrame():preprocess(filename) end
    if args['else'] then
 
    end
    return result
end
 
function encode(text)
    if text == nil then return nil end
    text = mw.ustring.gsub(text, ':', '-')
    return text
end
 
function formatnil(text, ...)
    if select("#", ...) == 0 then return text end
    for i=1, select("#", ...) do
        if select(i, ...) == nil then return nil end
    end
    return mw.ustring.format(text, ...)
end
 
return Filename