Module:DidYouKnow: Difference between revisions

Module:DidYouKnow (view source)

698 bytes added , Yesterday at 22:30

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@@ Line 3: / Line 3: @@
 -- CONFIG
 local DATA_PAGE = "Template:Did you know/Data"
+local DEFAULT_COUNT = 5
+local MAX_COUNT = 15
+-- Simple deterministic shuffle
+local function shuffle(t)
+    for i = #t, 2, -1 do
+        local j = math.random(i)
+        t[i], t[j] = t[j], t[i]
+    end
+end
 function p.main(frame)
+    local args = frame.args
+    local count = tonumber(args.count) or DEFAULT_COUNT
+    if count > MAX_COUNT then
+        count = MAX_COUNT
+    end
      local title = mw.title.new(DATA_PAGE)
      if not title or not title.exists then
@@ Line 29: / Line 45: @@
      end
-     -- Safe random seed
+     -- Daily seed (YYYYMMDD)
-     math.randomseed(os.time())
+    local today = os.date("%Y%m%d")
-     math.random() -- throw away first value
+     math.randomseed(tonumber(today))
+     math.random() -- discard first value
+    -- Shuffle and select
+    shuffle(items)
+    if count > #items then
+        count = #items
+    end
+    -- Build output list
+    local out = {}
+    table.insert(out, "<ul class='did-you-know-list'>")
+    for i = 1, count do
+        table.insert(out, "<li>" .. items[i] .. "</li>")
+    end
+    table.insert(out, "</ul>")
-     local choice = items[math.random(#items)]
+     return table.concat(out, "\n")
-    return choice
 end
 return p