#!/usr/bin/env bash

set -euo pipefail

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
ANDROID_DIR="$ROOT_DIR/android-buyer"
BACKEND_DIR="$ROOT_DIR/backend-api"
SDK_ROOT="${ANDROID_SDK_ROOT:-${ANDROID_HOME:-$HOME/Android/Sdk}}"
GRADLE="$ANDROID_DIR/gradlew"
ADB="$SDK_ROOT/platform-tools/adb"
APK="$ANDROID_DIR/app/build/outputs/apk/debug/app-debug.apk"

if [[ ! -x "$GRADLE" ]]; then
  echo "ERROR: Android Gradle Wrapper is missing or not executable: $GRADLE" >&2
  exit 2
fi
if [[ ! -d "$SDK_ROOT/platforms/android-34" ]]; then
  echo "ERROR: Android SDK 34 is missing; set ANDROID_SDK_ROOT or ANDROID_HOME." >&2
  exit 2
fi
if [[ ! -d "$SDK_ROOT/build-tools/34.0.0" ]]; then
  echo "ERROR: Android SDK Build Tools 34.0.0 is missing." >&2
  exit 2
fi
if ! command -v java >/dev/null 2>&1; then
  echo "ERROR: JDK 17 is missing from PATH." >&2
  exit 2
fi
JAVA_VERSION="$(java -version 2>&1 | head -n 1)"
if [[ "$JAVA_VERSION" != *'version "17.'* ]]; then
  echo "ERROR: JDK 17 is required; found: $JAVA_VERSION" >&2
  exit 2
fi
if [[ ! -f "$BACKEND_DIR/go.mod" ]]; then
  echo "ERROR: Go backend project is missing: $BACKEND_DIR" >&2
  exit 2
fi
if ! command -v go >/dev/null 2>&1; then
  echo "ERROR: Go 1.23.0 is missing from PATH." >&2
  exit 2
fi
GO_VERSION="$(go version)"
if [[ ! "$GO_VERSION" =~ ^go\ version\ go1\.23\.0[[:space:]] ]]; then
  echo "ERROR: Go 1.23.0 is required; found: $GO_VERSION" >&2
  exit 2
fi
if ! command -v gcc >/dev/null 2>&1; then
  echo "ERROR: GCC is required for the SQLite CGO build." >&2
  exit 2
fi

export ANDROID_HOME="$SDK_ROOT"
export ANDROID_SDK_ROOT="$SDK_ROOT"
export GOTOOLCHAIN=local
if [[ "$(go env CGO_ENABLED)" != "1" ]]; then
  echo "ERROR: CGO_ENABLED=1 is required for SQLite." >&2
  exit 2
fi

echo "==> Verifying Android project"
(
  cd "$ANDROID_DIR"
  "$GRADLE" test assembleDebug --no-daemon
)

echo "==> Debug APK: $APK"

echo "==> Verifying Go backend"
(
  cd "$BACKEND_DIR"
  go test ./...
  go vet ./...
  UNFORMATTED="$(gofmt -l cmd internal migrations)"
  if [[ -n "$UNFORMATTED" ]]; then
    echo "ERROR: Go files need gofmt:" >&2
    echo "$UNFORMATTED" >&2
    exit 2
  fi
  mkdir -p bin
  go build -o bin/cmroubao-api ./cmd/api
  go build -o bin/cmroubao-migrate ./cmd/migrate
)

if [[ "${RUN_START_COMMAND:-0}" == "1" ]]; then
  if [[ ! -x "$ADB" ]]; then
    echo "ERROR: Android Platform Tools are missing: $ADB" >&2
    exit 2
  fi
  if ! "$ADB" devices | grep -qE $'\tdevice$'; then
    echo "ERROR: No authorized Android device is connected." >&2
    exit 2
  fi

  echo "==> Installing and starting Debug APK"
  "$ADB" install -r -t "$APK"
  "$ADB" shell am start -W -n "com.roubao.autopilot/.MainActivity"
fi