--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/move_pic.js.luan	Fri Jul 11 20:57:49 2025 -0600
@@ -0,0 +1,26 @@
+local Luan = require "luan:Luan.luan"
+local error = Luan.error
+local Http = require "luan:http/Http.luan"
+local Pic = require "site:/lib/Pic.luan"
+local User = require "site:/lib/User.luan"
+local Db = require "site:/lib/Db.luan"
+local run_in_transaction = Db.run_in_transaction or error()
+
+
+return function()
+	local user = User.current() or error()
+	local pic_id = Http.request.parameters.pic or error()
+	local prev_id = Http.request.parameters.prev or error()
+	run_in_transaction( function()
+		local pic = Pic.get_by_id(pic_id) or error()
+		pic.user_id == user.id or error()
+		local prev
+		if prev_id == "null" then
+			prev = nil
+		else
+			prev = Pic.get_by_id(prev_id) or error()
+		end
+		pic.move_after(prev)
+		pic.save()
+	end )
+end