feat: add OG Image redirect functionality

- Introduced `OGRedirectController` to handle legacy OG image redirects based on organization handle and asset type.
- Added a new route in the router for redirecting requests to the appropriate paths for OG images.
- Implemented error handling for unknown assets, returning a 404 status with an error message.

Author: zcesur

lib/algora_web/controllers/api/og_redirect_controller.ex

@@ -0,0 +1,31 @@
+defmodule AlgoraWeb.API.OGRedirectController do
+  use AlgoraWeb, :controller
+
+  def redirect_to_org_path(conn, %{"org_handle" => org_handle, "asset" => asset} = params) do
+    target_path =
+      case {asset, params["status"]} do
+        {"leaderboard.png", _} ->
+          "/og/org/#{org_handle}/leaderboard"
+
+        {"bounties.png", status} when not is_nil(status) ->
+          "/og/org/#{org_handle}/bounties?status=#{status}"
+
+        {"bounties.png", _} ->
+          "/og/org/#{org_handle}/bounties"
+
+        _ ->
+          nil
+      end
+
+    if is_nil(target_path) do
+      conn
+      |> put_status(404)
+      |> json(%{error: "Unknown asset: #{asset}"})
+      |> halt()
+    else
+      conn
+      |> redirect(to: target_path)
+      |> halt()
+    end
+  end
+end

lib/algora_web/router.ex

@@ -172,6 +172,9 @@ defmodule AlgoraWeb.Router do
     get "/trpc/bounty.list", BountyController, :index
     post "/trpc/bounty.list", BountyController, :index
 
+    # Legacy OG Image redirects
+    get "/og/:org_handle/:asset", OGRedirectController, :redirect_to_org_path
+
     # Shields.io badges
     get "/shields/:org_handle/bounties", ShieldsController, :bounties
   end