#!/bin/bash
# Android APK Build Wrapper — ThinkCentre 1
# Usage: bash build.sh <app> [branch]
#   app:    staysober | blockblitz | ticked
#   branch: main (default)
#
# Output: /var/www/downloads/<app>/<app>-latest.apk
# Served: http://192.168.0.91:8080/<app>/

set -e

APP="${1:-}"
BRANCH="${2:-main}"
BUILD_DIR="/tmp/builds"
SERVE_DIR="/var/www/downloads"
GIT_BASE="git@192.168.0.34"  # Pi git server

# App → repo mapping
declare -A REPOS=(
  [staysober]="ottobringts/staysober"
  [blockblitz]="ottobringts/blockblitz"
  [ticked]="ottobringts/obsidian-tasks-app"
)

if [[ -z "$APP" || -z "${REPOS[$APP]}" ]]; then
  echo "Usage: $0 <app> [branch]"
  echo "Apps: ${!REPOS[@]}"
  exit 1
fi

REPO="${REPOS[$APP]}"
WORK_DIR="$BUILD_DIR/$APP"
APK_OUT="$SERVE_DIR/$APP"

echo "=== Building $APP ($BRANCH) ==="
echo "Repo: $REPO"

# Clone / pull
if [ -d "$WORK_DIR/.git" ]; then
  echo "Pulling latest..."
  cd "$WORK_DIR"
  git fetch origin
  git checkout "$BRANCH"
  git pull origin "$BRANCH"
else
  echo "Cloning..."
  mkdir -p "$BUILD_DIR"
  git clone --branch "$BRANCH" "https://github.com/$REPO.git" "$WORK_DIR"
  cd "$WORK_DIR"
fi

# Set ANDROID_HOME
export ANDROID_HOME="$HOME/android-sdk"
export PATH="$PATH:$ANDROID_HOME/cmdline-tools/latest/bin:$ANDROID_HOME/platform-tools:$ANDROID_HOME/build-tools/34.0.0"

# Expo prebuild if needed
if [ -f "app.json" ] && grep -q '"expo"' app.json; then
  echo "Expo project detected — running prebuild..."
  npx expo prebuild --platform android --no-install 2>&1 | tail -5
fi

# Gradle build
echo "Running Gradle assembleRelease..."
cd android 2>/dev/null || cd .
chmod +x gradlew
./gradlew assembleRelease --no-daemon --quiet 2>&1 | tail -20

# Find and copy APK
APK=$(find . -name "*.apk" -path "*/release/*" | head -1)
if [ -z "$APK" ]; then
  echo "ERROR: No APK found!"
  exit 1
fi

mkdir -p "$APK_OUT"
cp "$APK" "$APK_OUT/$APP-latest.apk"

echo ""
echo "=== Build complete ==="
echo "APK: $APK_OUT/$APP-latest.apk"
echo "URL: http://192.168.0.91:8080/$APP/$APP-latest.apk"
ls -lh "$APK_OUT/$APP-latest.apk"