1#!/usr/bin/env bash
2# What `wrangler dev` and `wrangler deploy` run before they serve or upload (worker/wrangler.toml,
3# [build]): the Worker, and the link preview's PNG and MP4, so a Worker cannot go out whose
4# own meta tags point at files that were never made.
5#
6# Run inside `nix develop ~/whiskers#web`.
7set -euo pipefail
8here="$(cd "$(dirname "$0")/.." && pwd)"
9cd "$here"
10
11out=worker/public/preview
12
13# The preview (the default mascot, Ginger) is rebuilt when a file is missing or the hash of what it
14# is drawn from has changed (tools/preview-hash: content, not modification times). It takes about
15# fifteen seconds; `wrangler dev` runs this on every save, so an unchanged source costs a hash.
16stale=0
17if [ ! -f "$out/card.png" ] || [ ! -f "$out/loop.mp4" ] || [ ! -f "$out/.sources" ]; then
18  stale=1
19elif [ "$(tools/preview-hash)" != "$(cat "$out/.sources")" ]; then
20  stale=1
21fi
22if [ "$stale" = 1 ]; then
23  rm -f "$out/card.png" "$out/loop.mp4"
24  tools/preview "$out"
25  tools/check-preview "$out"
26fi
27
28cd worker
29exec worker-build --release