#!/bin/sh

# Copy the hub's backdrop scenes into rust-core (E1 of the app's polish):

# the pure Rust that moves the website's living backgrounds (OxygenHub

# crates/backdrop: field, sky, mark, adrift, ripples, swarm, scene), with

# none of its browser glue, so the phone draws the very same scenes. The hub

# is their one source: never edit rust-core/src/backdrop by hand; change

# them in the hub and run this again.

#

#   scripts/sync-backdrop.sh [HUB_CHECKOUT]   (default ../oxygenhub)

set -eu

cd "$(dirname "$0")/.."

hub=${1:-../oxygenhub}

src="$hub/crates/backdrop/src"

[ -f "$src/sky.rs" ] || { echo "sync-backdrop: no $src/sky.rs (give the hub's checkout)" >&2; exit 1; }

from=$(cd "$hub" && oxy --plain log -n 1 -r "$(oxy --plain status | sed -n 's/^On \([^ ]*\) .*/\1/p')" 2>/dev/null | sed -n '1s/^[^0-9a-f]*\([0-9a-f]\{8\}\).*/\1/p')

out=rust-core/src/backdrop

mkdir -p "$out"

for f in field sky mark adrift ripples swarm scene; do

    {

        echo "// Copied from OxygenHub crates/backdrop/src/$f.rs (${from:-its main}) by"

        echo "// scripts/sync-backdrop.sh: change it there, never here."

        sed 's/crate::\(field\|sky\|scene\|mark\|adrift\|ripples\|swarm\)/crate::backdrop::\1/g' "$src/$f.rs"

    } > "$out/$f.rs"

done

cat > "$out/mod.rs" <<'MOD'

//! The hub's backdrop scenes (OxygenHub crates/backdrop), copied by

//! scripts/sync-backdrop.sh: the website's living backgrounds, stepped here

//! and drawn by the app (ui/backdrop).

#![allow(dead_code)]

pub mod adrift;

pub mod field;

pub mod mark;

pub mod ripples;

pub mod scene;

pub mod sky;

pub mod swarm;

MOD

echo "sync-backdrop: copied 7 scenes from $hub (${from:-?})"