Module:NPCShop

Documentation for this module may be created at Module:NPCShop/doc

local p = {}

-- Get sprite for an item from Cargo, fallback to item name
local function getItemSprite(itemName)
    local result = mw.ext.cargo.query('Items', 'sprite', {
        where = 'name="' .. itemName .. '"',
        limit = 1
    })
    
    if result and result[1] and result[1].sprite and result[1].sprite ~= '' then
        return result[1].sprite
    end
    return itemName
end

-- Format cost display
local function formatCost(cost, currency)
    if not cost or cost == '' then
        return '?'
    end
    local curr = currency or 'Gold'
    return tostring(cost) .. ' ' .. curr
end

-- Main function to display NPC shop items
function p.display(frame)
    local args = frame:getParent().args
    local source = args.npc or args.source or mw.title.getCurrentTitle().text
    
    -- Query ItemSource for shop items
    local items = mw.ext.cargo.query('ItemSource', 'item,cost,currency', {
        where = 'source="' .. source .. '" AND source_type="shop"'
    })
    
    -- Return empty if no shop items (section won't display)
    if not items or #items == 0 then
        return ''
    end
    
    -- Sort by cost ascending
    table.sort(items, function(a, b)
        local costA = tonumber(a.cost) or 0
        local costB = tonumber(b.cost) or 0
        return costA < costB
    end)
    
    -- Build table using mw.html
    local tbl = mw.html.create('table')
        :addClass('wikitable')
        :addClass('sortable')
        :addClass('shop-table')
    
    -- Header row
    local headerRow = tbl:tag('tr')
    headerRow:tag('th'):addClass('unsortable'):wikitext('')
    headerRow:tag('th'):wikitext('Item')
    headerRow:tag('th'):wikitext('Cost')
    
    for _, item in ipairs(items) do
        local sprite = getItemSprite(item.item)
        local costDisplay = formatCost(item.cost, item.currency)
        local costValue = tonumber(item.cost) or 0
        
        local row = tbl:tag('tr')
        
        -- Sprite cell
        local spriteWikitext = frame:preprocess(string.format('{{Sprite|%s|x2}}', sprite))
        row:tag('td')
            :css('text-align', 'center')
            :wikitext(spriteWikitext)
        
        -- Item cell
        row:tag('td')
            :wikitext(string.format('[[%s]]', item.item))
        
        -- Cost cell with sort value
        row:tag('td')
            :attr('data-sort-value', costValue)
            :wikitext(costDisplay)
    end
    
    -- Return section header + table
    return '== Shop ==\n' .. tostring(tbl)
end

return p