#!/usr/bin/env bash
# Starts the whole app: game server, Vite client and the Aspire dashboard.
# Skips MSBuild when AppHost and Server dlls are newer than C# / csproj / props.
#   ./run-aspire.sh
#   ./run-aspire.sh --launch-profile http
#   ./run-aspire.sh --rebuild
#   ./run-aspire.sh --no-tailscale

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

log() {
  echo "[run-aspire] $*"
}

skip_tailscale() {
  log "WARNING: $*"
  echo "             Friends cannot reach the client over the tailnet."
  echo "             Continuing with local access only (http://localhost:5173)."
}

# Same rules as tools/apphost-uptodate.ps1 and LaunchBuildStamp.cs.
needs_build() {
  local tfm=net10.0
  local apphost="src/HSchool.AppHost/bin/${configuration}/${tfm}/HSchool.AppHost.dll"
  local server="src/HSchool.Server/bin/${configuration}/${tfm}/HSchool.Server.dll"
  [[ -f "$apphost" && -f "$server" ]] || return 0

  local oldest=$apphost
  [[ "$server" -ot "$apphost" ]] && oldest=$server

  local name
  for name in global.json Directory.Build.props Directory.Packages.props; do
    [[ -f "$name" && "$name" -nt "$oldest" ]] && return 0
  done

  [[ -d src ]] || return 0

  local found
  found=$(find src \( -name bin -o -name obj -o -name node_modules \) -prune -o \
    -type f \( -name '*.cs' -o -name '*.csproj' -o -name '*.props' \) -newer "$oldest" -print -quit)
  [[ -n "$found" ]]
}

configuration=Debug
rebuild=0
tailscale_serve=1
dotnet_args=()
expect_configuration=0

while [[ $# -gt 0 ]]; do
  if [[ $expect_configuration -eq 1 ]]; then
    configuration=$1
    expect_configuration=0
    shift
    continue
  fi
  case $1 in
    --rebuild) rebuild=1 ;;
    --no-tailscale) tailscale_serve=0 ;;
    -c|--configuration) expect_configuration=1 ;;
    *) dotnet_args+=("$1") ;;
  esac
  shift
done

if [[ $expect_configuration -eq 1 ]]; then
  log "missing value for -c / --configuration."
  exit 1
fi

if ! command -v dotnet >/dev/null; then
  log "dotnet SDK not found in PATH."
  echo "             Install .NET 10: https://dotnet.microsoft.com/download"
  exit 1
fi

if ! command -v node >/dev/null; then
  log "Node.js not found in PATH - the client resource will fail to start."
  echo "             Install Node 22.12 or newer: https://nodejs.org"
  echo
fi

need_build=0
if [[ $rebuild -eq 1 ]]; then
  log "--rebuild: building."
  need_build=1
elif needs_build; then
  log "sources changed or binaries missing, building."
  need_build=1
else
  log "binaries are up to date, skipping build."
fi

if [[ $need_build -eq 1 ]]; then
  echo
  if ! dotnet build src/HSchool.AppHost/HSchool.AppHost.csproj -c "$configuration"; then
    echo
    log "build failed."
    exit 1
  fi
  echo
fi

client_tailscale_url=
if [[ $tailscale_serve -eq 1 ]]; then
  if ! command -v tailscale >/dev/null; then
    skip_tailscale "tailscale not found in PATH."
  elif ! tailscale status >/dev/null 2>&1; then
    skip_tailscale "tailscale is not connected or not running."
  else
    log "tailscale serve --bg 5173"
    if ! tailscale serve --bg 5173; then
      skip_tailscale "tailscale serve failed."
    else
      line=$(tailscale serve status 2>/dev/null | head -n 1 || true)
      token=${line%% *}
      case $token in
        https://*) client_tailscale_url=$token ;;
      esac
    fi
  fi
  echo
fi

log "Starting the Aspire AppHost. Press Ctrl+C to shut everything down."
log "Client: http://localhost:5173"
if [[ -n "$client_tailscale_url" ]]; then
  log "Client (Tailscale): $client_tailscale_url"
fi
echo

set +e
dotnet run --project src/HSchool.AppHost/HSchool.AppHost.csproj --no-build --no-restore -c "$configuration" "${dotnet_args[@]}"
exit_code=$?
set -e

if [[ $exit_code -ne 0 ]]; then
  echo
  log "AppHost exited with code ${exit_code}."
fi

exit "$exit_code"