Module:Infobox

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

-- Module:Infobox (robust)
-- Outputs HTML with shared CSS classes; auto-hides empty rows.
-- Tolerant to underscore/space mismatches and safe in previews.

local p = {}

-- ---------- helpers ----------
local function trim(s)
  if type(s) ~= "string" then return s end
  return mw.text.trim(s)
end

local function isNonEmpty(v)
  if v == nil then return false end
  if type(v) ~= "string" then return true end
  return mw.text.trim(v) ~= ""
end

local function renderImage(filename, size)
  if not isNonEmpty(filename) then return nil end
  size = size or "280px"
  return string.format("[[File:%s|%s|center]]", trim(filename), size)
end

local function splitPipeList(s)
  local t = {}
  if not isNonEmpty(s) then return t end
  for seg in tostring(s):gmatch("([^|]+)") do
    seg = mw.text.trim(seg)
    if seg ~= "" then table.insert(t, seg) end
  end
  return t
end

-- try multiple key variants in user args: "birth_place" <-> "birth place"
local function getUserValue(user, key)
  if not isNonEmpty(key) then return nil end
  local k1 = key
  local k2 = key:gsub("_", " ")
  local k3 = key:gsub(" ", "_")
  return user[k1] or user[k2] or user[k3]
end

-- ---------- core builder ----------
local function buildTable(args)
  local root = mw.html.create("table"):addClass("infobox")

  -- Title
  local title = args.title or args.name or mw.title.getCurrentTitle().text
  root:tag("tr")
      :tag("th")
        :attr("colspan", "2")
        :addClass("infobox-title")
        :wikitext(title)

  -- Image
  local image = renderImage(args.image, args.image_size)
  if image then
    root:tag("tr")
        :tag("td")
          :attr("colspan", "2")
          :addClass("infobox-image")
          :wikitext(image)
  end

  -- Caption
  if isNonEmpty(args.caption) then
    root:tag("tr")
        :tag("td")
          :attr("colspan", "2")
          :addClass("infobox-caption")
          :wikitext(args.caption)
  end

  -- Numbered rows
  local maxRows = tonumber(args.maxrows) or 50
  for i = 1, maxRows do
    local label = trim(args["label"..i] or "")
    local data  = trim(args["data"..i]  or "")
    if isNonEmpty(label) or isNonEmpty(data) then
      local tr = root:tag("tr")
      tr:tag("th"):addClass("infobox-label"):wikitext(label or "")
      tr:tag("td"):addClass("infobox-data") :wikitext(data  or "")
    end
  end

  return tostring(root)
end

-- Direct builder for numbered label/data pairs
function p.build(frame)
  local args = {}

  -- parent args
  if type(frame.getParent) == "function" then
    local parent = frame:getParent()
    if parent and parent.args then
      for k, v in pairs(parent.args) do args[k] = v end
    end
  end

  -- direct args
  if frame and frame.args then
    for k, v in pairs(frame.args) do args[k] = v end
  end

  return buildTable(args)
end

-- Smart builder: wrappers pass Label=paramName; only non-empty values render.
function p.smart(frame)
  -- safe parent
  local parent = nil
  if type(frame.getParent) == "function" then
    parent = frame:getParent()
  end

  -- values supplied by the article transclusion
  local user = (parent and parent.args) or frame.args or {}

  -- wrapper map (Label=paramKey), plus optional "order"
  local map = frame.args or {}

  local newArgs, added = {}, 0

  local function addRow(label, key)
    local value = getUserValue(user, key)
    if isNonEmpty(value) then
      added = added + 1
      newArgs["label"..added] = label
      newArgs["data"..added]  = value
    end
  end

  -- explicit order first
  local orderList = splitPipeList(map.order)
  for _, label in ipairs(orderList) do
    local key = map[label]
    if isNonEmpty(key) then addRow(label, key) end
  end

  -- remaining labels
  for label, key in pairs(map) do
    if label ~= "order" and type(label) == "string" then
      local already = false
      for _, ol in ipairs(orderList) do if ol == label then already = true; break end end
      if not already and isNonEmpty(key) then addRow(label, key) end
    end
  end

  -- headers
  newArgs.title      = user.title or user.name or mw.title.getCurrentTitle().text
  newArgs.image      = getUserValue(user, "image")
  newArgs.image_size = getUserValue(user, "image_size")
  newArgs.caption    = getUserValue(user, "caption")
  newArgs.maxrows    = user.maxrows or 50

  return buildTable(newArgs)
end

return p