Seen plugin

plugin/seen.lua

@@ -0,0 +1,46 @@
+DB:exec([[CREATE TABLE IF NOT EXISTS seen (
+  nick VARCHAR(100) PRIMARY KEY,
+  channel VARCHAR(100) NOT NULL,
+  action VARCHAR(20) NOT NULL,
+  time INTEGER NOT NULL)]])
+
+local function update (channel, from, action)
+  local stmt = DB:prepare("INSERT OR REPLACE INTO seen VALUES (?, ?, ?, ?)")
+  stmt:bind_values(from, channel, action, os.time())
+  stmt:step()
+  stmt:finalize()
+end
+
+on_join.seen = function(target, from)
+  update(target, from, "joining")
+end
+
+on_part.seen = function (target, from, msg)
+  update(target, from, "leaving")
+end
+
+callback.seen = function (target, from, msg)
+  update(target, from, "talking")
+end
+
+plugin.seen = function (target, from, arg)
+  if not arg or arg == "" then
+    irc.say(target, "Give me a name plz!")
+    return
+  end
+  local stmt = DB:prepare("SELECT * FROM seen WHERE NICK = ?")
+  stmt:bind_values(arg:lower())
+  local status = stmt:step()
+  local result = nil
+  if status == sqlite3.ROW then result = stmt:get_named_values() end
+  stmt:finalize()
+  if status and result then
+    local c = " "
+    if result.action == "talking" then
+      c = " in "
+    end
+    irc.say(target, result.nick.." was last seen "..result.action..c..result.channel.." "..elapsed(os.date("!%Y-%m-%dT%H:%M:%SZ",result.time)).." ago.")
+  else
+    irc.say(target, "I cannot find anything about "..arg)
+  end
+end

plugin/twitch.lua

@@ -3,6 +3,7 @@
 local json = require("json")
 local https = require("ssl.https")
 local ltn12 = require("ltn12")
+local msc = require("misc")
 
 local function fetch_data (endpoint)
   local response = {}
@@ -12,23 +13,6 @@ local function fetch_data (endpoint)
   return json.decode(table.concat(response))
 end
 
-local function elapsed (datestring)
-  local pattern = "(%d+)-(%d+)-(%d+)T(%d+):(%d+):(%d+)Z"
-  local year,month,day,hour,min,sec = datestring:match(pattern)
-  local start = os.time({year = year, month = month, day = day, hour = hour, min = min, sec = sec, isdst = false })
-  local utcnow = os.time(os.date("!*t"))
-  local diff = utcnow-start
-  local hours = math.floor(diff/3600)
-  local mins = math.floor(diff/60 - hours*60)
-  h = hours > 1 and " hours" or " hour"
-  m = mins > 1 and " minutes" or " minute"
-  if hours > 0 then
-    return hours..h.." and "..mins..m
-  else
-    return mins..m
-  end
-end
-
 plugin.uptime = function (target, from, arg)
   local channel = string.sub(target, 2)
   if arg and arg ~= "" then