#!/usr/bin/env bash
# provision-windows.sh — idempotent provisioning for the Windows host runner.
#
# Pre-warms what compile-windows.sh would download at runtime: Flutter Windows
# engine artifacts, pub packages, and the Inno Setup compiler (ISCC) used to
# build the installer. The Flutter part short-circuits via a stamp keyed to the
# installed Flutter version; Inno Setup is ensured on every run (cheap when
# already present) so it self-heals independently of the Flutter stamp.
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-windows"
CUR="${STAMP_DIR}/.flutter-version-win.cur"
mkdir -p "$STAMP_DIR"

# --- ensure Inno Setup (ISCC) for building the installer (always checked) ---
ISCC="/c/Program Files (x86)/Inno Setup 6/ISCC.exe"
if [ ! -f "$ISCC" ]; then
  echo "==> installing Inno Setup 6 (silent)"
  # Canonical "latest stable" entry point (redirects to the GitHub release asset).
  INNO_URL="https://jrsoftware.org/download.php/is.exe"
  powershell -NoProfile -Command \
    "Invoke-WebRequest -Uri '${INNO_URL}' -OutFile \"\$env:TEMP\\innosetup.exe\""
  powershell -NoProfile -Command \
    "Start-Process -Wait -FilePath \"\$env:TEMP\\innosetup.exe\" -ArgumentList '/VERYSILENT','/SUPPRESSMSGBOXES','/NORESTART','/SP-'"
  if [ ! -f "$ISCC" ]; then
    echo "ERROR: Inno Setup install failed — ISCC not found at '$ISCC'." >&2
    exit 1
  fi
  echo "==> Inno Setup installed."
fi

# --- detection (Flutter) ---
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-windows: already provisioned (Flutter unchanged), skipping."
  exit 0
fi

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

# --- warm Flutter Windows engine + pub deps ---
echo "==> precache Flutter engine (windows)"
flutter precache --windows

echo "==> flutter pub get (client)"
(cd "${SCRIPT_DIR}/../../client" && flutter pub get)

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