#!/usr/bin/env bash
#
# build-stage.sh — Build the Stage marketing image (neuron-web + soul-demo).
#
# Pipeline:
#   1. Stage the foundation El runtime into ./runtime/.
#   2. Compile client-side El sources (src/js/*.el) to dist/js/*.js using
#      the JS-capable elc binary at bin/elc-linux-amd64 (CI) or the local
#      elc (dev). Output is gitignored and rebuilt every run.
#   3. Concatenate src/*.el into dist/main-combined.el (component-first,
#      main.el last; matches the historical order from build-local.sh).
#   4. Compile dist/main-combined.el → dist/main.c using the canonical
#      native elc at foundation/el/dist/platform/elc.
#   5. Inject the host-side stub forward declarations into dist/main.c
#      (sed header rewrite, same set as the prior in-Dockerfile sed).
#   6. docker buildx build --platform linux/amd64 -f Dockerfile.stage.
#
# bootstrap.py is no longer in the build path. The container image now
# expects dist/main.c to be a finished C source — it just runs cc on it.
#
# Usage:
#   ./build-stage.sh <tag>           — build marketing:<tag>

set -euo pipefail
cd "$(dirname "$0")"

TAG="${1:-dev}"

LANDING_DIR=$(pwd)
EL_HOME="${EL_HOME:-${LANDING_DIR}/../../foundation/el}"
ELC="${EL_HOME}/dist/platform/elc"
RUNTIME_SRC="${EL_HOME}/el-compiler/runtime"

# JS-capable elc: prefer committed bin/elc-linux-amd64 on CI (linux/amd64),
# fall back to the local elc from the El checkout on macOS dev.
if [ -f "${LANDING_DIR}/bin/elc-linux-amd64" ] && uname -m | grep -q x86_64; then
    ELC_JS="${LANDING_DIR}/bin/elc-linux-amd64"
elif [ -x "${ELC}" ]; then
    ELC_JS="${ELC}"
else
    echo "elc for JS compilation not found — expected bin/elc-linux-amd64 or ${ELC}" >&2
    exit 1
fi

if [ ! -x "${ELC}" ]; then
    echo "elc not found at ${ELC}" >&2
    exit 1
fi

echo "==> Staging El runtime from ${RUNTIME_SRC}"
mkdir -p runtime dist
cp "${RUNTIME_SRC}/el_runtime.c" runtime/
cp "${RUNTIME_SRC}/el_runtime.h" runtime/

# The JS compiler looks for el_runtime.js in the same directory as the
# source file being compiled. Copy it there so --bundle can inline it.
cp "${RUNTIME_SRC}/el_runtime.js" "${LANDING_DIR}/src/js/"

echo "==> Compiling client-side El (src/js/*.el) → dist/js/"
mkdir -p dist/js
for f in "${LANDING_DIR}/src/js/"*.el; do
    name=$(basename "$f" .el)
    "${ELC_JS}" --target=js --bundle --minify --obfuscate "$f" > "${LANDING_DIR}/dist/js/${name}.js"
    echo "    compiled: src/js/${name}.el → dist/js/${name}.js"
done

# Clean up the staged runtime (not a source file)
rm -f "${LANDING_DIR}/src/js/el_runtime.js"

echo "==> Combining El sources → dist/main-combined.el"
COMPONENTS=(nav hero pillars how_it_works inference efficiency comparison
    environmental enterprise mission local_first pricing marketplace viral
    footer styles about founding_badge terms enterprise_terms checkout safety
    gallery account)
{
    for f in "${COMPONENTS[@]}"; do
        if [ -f "src/${f}.el" ]; then
            grep -hv '^[[:space:]]*from\|^[[:space:]]*import' "src/${f}.el"
            echo ""
        fi
    done
    grep -v '^from\|^import' src/main.el
} > dist/main-combined.el
echo "    $(wc -l < dist/main-combined.el) lines"

echo "==> Compiling dist/main-combined.el → dist/main.c via ${ELC}"
"${ELC}" dist/main-combined.el > dist/main.c
echo "    $(wc -l < dist/main.c) lines of C"

echo "==> Injecting host-side stub forward declarations"
# GNU vs BSD sed: -i with no arg works on GNU, breaks on macOS BSD sed
# (BSD requires -i ''). Detect and branch.
SED_INPLACE=(-i)
if sed --version >/dev/null 2>&1; then
    SED_INPLACE=(-i)
else
    SED_INPLACE=(-i '')
fi
sed "${SED_INPLACE[@]}" \
  's|#include "el_runtime.h"|#include "el_runtime.h"\nel_val_t http_get_auth(el_val_t url, el_val_t tok);\nel_val_t http_post_auth(el_val_t url, el_val_t tok, el_val_t body);\nel_val_t http_post_auth_json(el_val_t url, el_val_t tok, el_val_t body);\nel_val_t http_delete_auth(el_val_t url, el_val_t bearer_tok, el_val_t apikey);\nel_val_t cwd(void);\nel_val_t color_bold(el_val_t s);\nel_val_t unix_timestamp(void);\nel_val_t gcs_write(el_val_t bucket, el_val_t object_name, el_val_t content);\nel_val_t gcs_read(el_val_t bucket, el_val_t object_name);\nel_val_t supabase_insert(el_val_t project_url, el_val_t service_key, el_val_t table, el_val_t row_json);\nel_val_t supabase_get(el_val_t project_url, el_val_t service_key, el_val_t table_and_query);\nel_val_t supabase_auth_user(el_val_t project_url, el_val_t anon_key, el_val_t user_jwt);\nel_val_t supabase_admin_invite(el_val_t project_url, el_val_t service_key, el_val_t body_json);\nel_val_t supabase_upsert_user(el_val_t project_url, el_val_t anon_key, el_val_t user_jwt, el_val_t table_and_query, el_val_t row_json);|' \
  dist/main.c

echo "==> Building Docker image marketing:${TAG}"
# Plain `docker build` — the gitea runner doesn't ship buildx, so
# `docker buildx build --platform ...` exits 125 ("unknown flag:
# --platform"). The runner host is already linux/amd64 so the
# explicit --platform is redundant. BUILDKIT_INLINE_CACHE works with
# plain docker as long as DOCKER_BUILDKIT=1 is set (default on the
# runner).
docker build \
    --build-arg BUILDKIT_INLINE_CACHE=1 \
    --cache-from us-central1-docker.pkg.dev/neuron-785695/neuron-marketing/marketing:latest \
    -f Dockerfile.stage \
    -t "marketing:${TAG}" \
    .

echo "==> Done. marketing:${TAG} built."