#!/usr/bin/env bash
# provision-mac.sh — idempotent provisioning for the macOS host runner.
#
# Pre-warms everything the build jobs (compile.sh / compile-macos.sh) would
# otherwise download at runtime: Flutter macOS+web engine artifacts, pub
# packages, Go modules, npm deps. Safe to run on every pipeline run — it
# short-circuits via a stamp file keyed to the installed Flutter version, so
# once provisioned it returns in milliseconds and downloads nothing.
set -euo pipefail

SCRIPT_DIR="$(dirname "$0")"
# shellcheck source=scripts/ci/_env.sh
. "${SCRIPT_DIR}/_env.sh"

STAMP_DIR="${HOME}/.cache/jiu-ci"
STAMP="${STAMP_DIR}/provisioned-mac"
CUR="${STAMP_DIR}/.flutter-version-mac.cur"
mkdir -p "$STAMP_DIR"

# --- detection: skip if already provisioned for this Flutter version ---
if ! command -v flutter >/dev/null 2>&1; then
  echo "ERROR: flutter not found on PATH. Install Flutter on this runner first." >&2
  exit 1
fi
flutter --version --machine > "$CUR" 2>/dev/null || flutter --version > "$CUR" 2>&1 || true

if [ -s "$STAMP" ] && cmp -s "$STAMP" "$CUR"; then
  echo "==> provision-mac: already provisioned (Flutter unchanged), skipping."
  exit 0
fi

echo "==> provision-mac: not provisioned (or Flutter changed) — running."

# --- toolchain presence (do not auto-install system-level tools) ---
for tool in go node npm; do
  if ! command -v "$tool" >/dev/null 2>&1; then
    echo "ERROR: '$tool' not found on PATH. Install it on this runner first." >&2
    exit 1
  fi
done

# --- warm Flutter platform engines (the macOS SDK download seen in CI) ---
echo "==> precache Flutter engines (macos, web)"
flutter precache --macos --web --universal

# --- warm dependency caches ---
echo "==> flutter pub get (client)"
(cd "${SCRIPT_DIR}/../../client" && flutter pub get)

echo "==> go mod download (backend)"
(cd "${SCRIPT_DIR}/../../backend" && go mod download)

echo "==> npm ci (web)"
(cd "${SCRIPT_DIR}/../../web" && npm ci --prefer-offline)

# --- mark provisioned ---
cp "$CUR" "$STAMP"
echo "==> provision-mac: done."
echo "--- versions ---"
flutter --version | head -1
go version
node --version