#!/bin/sh
set -eu

# Xcode enumerates a package target's sources and resources when it loads the
# package graph, which is before any build phase or scheme pre-action runs.
# Generated sources and the staged image that appear during a build are
# therefore missing from that build's LumaCore, so they have to be written
# before xcodebuild is invoked at all. Pass --require-existing where the build
# has already started, to say so plainly rather than let the compiler fail on
# the missing declarations or the app on the missing image.
require_existing=false
if [ "${1:-}" = "--require-existing" ]; then
    require_existing=true
fi

root=$(cd "$(dirname "$0")/.." && pwd)
agent_out="$root/Sources/LumaCore/Generated/LumaAgent.swift"
pharo_image="$root/Sources/LumaCore/Resources/pharo-image/SwiftyPharo.image"

if $require_existing && { [ ! -f "$agent_out" ] || [ ! -f "$pharo_image" ]; }; then
    echo "error: generated sources are missing; run scripts/generate-sources.sh and build again" >&2
    exit 1
fi

"$root/scripts/stage-pharo-image.sh"

swift run --package-path "$root" LumaBundleCompiler \
    --config       "$root/Agent/bundle.json" \
    --project-root "$root" \
    --staging-dir  "$root/build/.agent-staging"

# Built through SwiftPM rather than as a target in the Xcode project, so it
# links the same shader toolchain the runtime translation does.
swift run --package-path "$root" LumaShaderCompiler \
    --shader-dir "$root/Shaders" \
    --swift-out  "$root/Sources/LumaCore/Generated/ShaderEffects.swift" \
    --metal-dir  "$root/Luma/Shaders/Generated"