#!/bin/sh
# Builds the download page into build/site/ for the release in
# build/version.json (made by tools/export.sh):
#
#   tools/site/make_site.sh
#
#   build/site/index.html    the page, with this release's download links
#   build/site/poster.jpg    the trailer's title frame
#   build/site/trailer.mp4   the trailer (tools/trailer/make_trailer.sh)
#   build/site/shots/        the screenshots (tools/site/make_shots.sh)
#
# Copy the folder to any static web host. Gitea itself won't serve HTML, so
# the page lives elsewhere and links to the files on the Gitea release.
# Rebuild it after each release (the links name the version).

cd "$(dirname "$0")/../.." || exit 1
REPO=${REPO:-https://git.psbailey.uk/Admin/Emberwild}
SITE=${SITE:-https://cinderwild.psbailey.uk}   # (where the page is served: for link previews)
SHOTS="meadow hut wolves winter cove treasure crabs"
[ -f build/version.json ] || { echo "no build/version.json: run tools/export.sh first"; exit 1; }
[ -f build/Cinderwild-trailer.mp4 ] || { echo "no trailer: run tools/trailer/make_trailer.sh first"; exit 1; }
for s in $SHOTS; do
	[ -f "build/shots/$s.jpg" ] || { echo "no build/shots/$s.jpg: run tools/site/make_shots.sh first"; exit 1; }
done

rm -rf build/site && mkdir -p build/site
cp build/Cinderwild-trailer.mp4 build/site/trailer.mp4
cp build/trailer/poster.jpg build/site/poster.jpg
mkdir -p build/site/shots
for s in $SHOTS; do cp "build/shots/$s.jpg" build/site/shots/; done
python3 - "$REPO" "$SITE" <<'EOF'
import html, json, sys
repo = sys.argv[1].rstrip("/")
site = sys.argv[2].rstrip("/")
v = json.load(open("build/version.json"))
tag = "v" + v["version"]
def dl(plat):
    d = v["downloads"].get(plat)
    if not d:
        return repo + "/releases", "see all releases"
    return "%s/releases/download/%s/%s" % (repo, tag, d["file"]), "%.0f MB" % (d["size"] / 1e6)
mac_url, mac_size = dl("macos")
win_url, win_size = dl("windows")
page = open("tools/site/index.html").read()
for k, val in {
    "VERSION": v["version"], "DATE": v.get("date", ""), "NOTES": v.get("notes", ""),
    "MAC_URL": mac_url, "MAC_SIZE": mac_size, "WIN_URL": win_url, "WIN_SIZE": win_size,
    "RELEASES_URL": repo + "/releases", "REPO_URL": repo, "SITE_URL": site,
}.items():
    page = page.replace("{{%s}}" % k, html.escape(str(val), quote=True))
assert "{{" not in page, "a placeholder was left unfilled"
open("build/site/index.html", "w").write(page)
print("built build/site/ for %s:\n  %s\n  %s" % (v["version"], mac_url, win_url))
EOF

# The help pages (guide.html): the written guide plus tables from the game's
# own data, which Godot dumps from the scripts so they're exact.
. tools/godot_env.sh
DATA=build/site_data.json
"$GODOT" --headless --path . --script res://tools/site/dump_data.gd -- "$PWD/$DATA" >/dev/null 2>&1 \
	|| { echo "couldn't dump the game data for the guide"; exit 1; }
python3 tools/site/make_guide.py "$DATA" build/site || exit 1
rm -f "$DATA"

# Cloudflare Pages refuses any file over 25 MiB: catch it here, not at deploy.
LIMIT=26214400
for f in build/site/* build/site/shots/*; do
	[ -f "$f" ] || continue
	s=$(stat -f %z "$f" 2>/dev/null || stat -c %s "$f")
	if [ "$s" -ge "$LIMIT" ]; then
		echo "$f is $s bytes: over Cloudflare Pages' 25 MiB limit (re-encode the trailer smaller)"; exit 1
	fi
done