#!/usr/bin/env bash
set -euo pipefail

ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
cd "$ROOT"

render_plugin_json() {
    local entrypoint="$1"
    local out="$2"
    local in="$ROOT/plugin.json.in"
    if [ ! -f "$in" ]; then
        echo "ERROR: $in not found" >&2
        exit 1
    fi
    sed "s|@ENTRYPOINT@|$entrypoint|g" "$in" > "$out"
}

STAGE="$ROOT/build/bin/com.jesshunter.layers"
APPDIR="$STAGE/bin"

rm -rf "$STAGE"
mkdir -p "$APPDIR" "$STAGE/resources"

if command -v rsvg-convert >/dev/null 2>&1 && [ -f "$ROOT/resources/Layers.svg" ]; then
    for size in 24 48 128 256; do
        if [ ! -f "$ROOT/resources/icon-${size}.png" ]; then
            rsvg-convert --width "$size" --height "$size" \
                "$ROOT/resources/Layers.svg" -o "$ROOT/resources/icon-${size}.png"
        fi
    done
fi

# Detect the running window-manager / display protocol to pick the front-end
# provider that gets compiled into the binary. Override with LAYERS_FEATURES.
detect_wm_feature() {
    if [ -n "${LAYERS_FEATURES:-}" ]; then
        echo "$LAYERS_FEATURES"
        return
    fi
    # Native Wayland session — use the wayland provider (winit xdg-toplevel,
    # render transparency, user pins on top via compositor).
    if [ -n "${WAYLAND_DISPLAY:-}" ]; then
        echo "wayland"
        return
    fi
    # X11 session or no WAYLAND_DISPLAY: use the X11 provider.
    echo "x11"
}

FEATURE="$(detect_wm_feature)"
echo "build: front-end provider = $FEATURE  (XDG_CURRENT_DESKTOP=${XDG_CURRENT_DESKTOP:-<unset>}, WAYLAND_DISPLAY=${WAYLAND_DISPLAY:-<unset>})"
cargo build --release --bin layers --no-default-features --features "$FEATURE"

cp "$ROOT/target/release/layers" "$APPDIR/Layers"
chmod +x "$APPDIR/Layers"
render_plugin_json "bin/Layers" "$STAGE/plugin.json"
[ -f "$ROOT/LICENCE" ] && cp "$ROOT/LICENCE" "$STAGE/LICENCE"
cp -r "$ROOT/resources/." "$STAGE/resources/"

echo "staged: $STAGE"
echo "bin:    $APPDIR/Layers"