From f140bc1b0be0a31a8280822ca490439d4f103771 Mon Sep 17 00:00:00 2001
From: Solderpunk <solderpunk@sdf.org>
Date: Mon, 6 May 2019 19:48:24 +0000
Subject: Add (R)ecent function to show 10 most recently active threads.

---
 telem.lua | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/telem.lua b/telem.lua
index 8127e48..d2fe594 100755
--- a/telem.lua
+++ b/telem.lua
@@ -423,6 +423,40 @@ function do_new()
 	print("Post submitted.")
 end
 
+function do_recent()
+	local recent = {}
+	local N = 10
+	for i, board in ipairs(boards) do
+		local threads = get_threads(board)
+		for _, thread in ipairs(threads) do
+			local x = {}
+			x.board = board
+			x.thread = thread
+			if #recent < N then
+				table.insert(recent, x)
+				table.sort(recent, function(x,y) return x.thread.updated > y.thread.updated end)
+			elseif thread.updated > recent[N].thread.updated then
+				table.remove(recent, N)
+				table.insert(recent, x)
+				table.sort(recent, function(x,y) return x.thread.updated > y.thread.updated end)
+			end
+		end
+	end
+	print("Most recently active threads:")
+	print(colourise("magenta", string.format("%s %s %s",
+		stringx.ljust("Board name", 20),
+		stringx.ljust("Thread topic" ,48),
+		"Latest post"))
+	)
+	print(string.rep("-",79))
+	for i, update in ipairs(recent) do
+		io.write(colourise("cyan", stringx.ljust(update.board.name,20)) .. " " ..
+			stringx.ljust(update.thread.subject, 48) .. " " ..
+			os.date("%B %d, %Y", update.thread.updated) .. "\n")
+	end
+	print(string.rep("-",79))
+end
+
 function do_scan()
 	for i, board in ipairs(boards) do
 		io.write(string.format("%3d ", i))
@@ -644,6 +678,7 @@ dispatch["="] = do_unimplemented
 dispatch["M"] = do_unimplemented
 dispatch["n"] = do_new
 dispatch["r"] = do_reply
+dispatch["R"] = do_recent
 dispatch["b"] = do_board
 dispatch["c"] = do_colour
 
-- 
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