#!/bin/bash
# ═══════════════════════════════════════════════════════
# Setup Gitea Act Runner for Android APK builds
# Run this ONCE on the build machine (this WSL instance)
# ═══════════════════════════════════════════════════════
set -e

GITEA_URL="http://192.168.5.10:3000"
GITEA_TOKEN="4316139b56813d461f5a5a4fa6fa8eb94b5e37e6"
RUNNER_DIR="$HOME/act_runner"
ANDROID_HOME_DIR="$HOME/android-sdk"

echo "══════════════════════════════════════"
echo "  Step 1: Install Java 17"
echo "══════════════════════════════════════"
if java --version 2>&1 | grep -q "17"; then
    echo "Java 17 already installed"
else
    sudo apt-get update
    sudo apt-get install -y openjdk-17-jdk-headless
fi
echo "Java: $(java --version 2>&1 | head -1)"

echo ""
echo "══════════════════════════════════════"
echo "  Step 2: Install Android SDK"
echo "══════════════════════════════════════"
if [ -d "$ANDROID_HOME_DIR/platforms" ]; then
    echo "Android SDK already installed at $ANDROID_HOME_DIR"
else
    mkdir -p "$ANDROID_HOME_DIR"
    cd /tmp

    # Download Android command-line tools
    CMDLINE_TOOLS_URL="https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip"
    echo "Downloading Android command-line tools..."
    wget -q "$CMDLINE_TOOLS_URL" -O cmdline-tools.zip
    unzip -qo cmdline-tools.zip -d "$ANDROID_HOME_DIR"
    mkdir -p "$ANDROID_HOME_DIR/cmdline-tools/latest"
    mv "$ANDROID_HOME_DIR/cmdline-tools/bin" "$ANDROID_HOME_DIR/cmdline-tools/latest/"
    mv "$ANDROID_HOME_DIR/cmdline-tools/lib" "$ANDROID_HOME_DIR/cmdline-tools/latest/"
    rm -f cmdline-tools.zip

    # Accept licenses and install required SDK components
    export ANDROID_HOME="$ANDROID_HOME_DIR"
    yes | "$ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager" --licenses > /dev/null 2>&1 || true
    "$ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager" \
        "platforms;android-35" \
        "build-tools;35.0.0" \
        "platform-tools"

    echo "Android SDK installed at $ANDROID_HOME_DIR"
fi

echo ""
echo "══════════════════════════════════════"
echo "  Step 3: Install Act Runner"
echo "══════════════════════════════════════"
mkdir -p "$RUNNER_DIR"
cd "$RUNNER_DIR"

if [ ! -f "$RUNNER_DIR/act_runner" ]; then
    RUNNER_URL="https://gitea.com/gitea/act_runner/releases/download/v0.2.11/act_runner-0.2.11-linux-amd64"
    echo "Downloading act_runner..."
    wget -q "$RUNNER_URL" -O act_runner
    chmod +x act_runner
    echo "Act runner downloaded"
else
    echo "Act runner already exists"
fi

echo ""
echo "══════════════════════════════════════"
echo "  Step 4: Register runner with Gitea"
echo "══════════════════════════════════════"
if [ -f "$RUNNER_DIR/.runner" ]; then
    echo "Runner already registered"
else
    # Get registration token via API
    REG_TOKEN=$(curl -s -X GET \
        -H "Authorization: token $GITEA_TOKEN" \
        "$GITEA_URL/api/v1/repos/admin/itstransport-android/actions/runners/registration-token" \
        | python3 -c "import sys,json; print(json.load(sys.stdin).get('token',''))")

    if [ -z "$REG_TOKEN" ]; then
        echo "ERROR: Could not get registration token."
        echo "Go to Gitea → itstransport-android → Settings → Actions → Runners"
        echo "Create a runner token and run:"
        echo "  cd $RUNNER_DIR && ./act_runner register --instance $GITEA_URL --token <TOKEN> --labels ubuntu-latest:host --name its-android-builder"
        exit 1
    fi

    echo "Registering runner..."
    ./act_runner register \
        --instance "$GITEA_URL" \
        --token "$REG_TOKEN" \
        --labels "ubuntu-latest:host" \
        --name "its-android-builder" \
        --no-interactive
    echo "Runner registered!"
fi

echo ""
echo "══════════════════════════════════════"
echo "  Step 5: Create systemd service"
echo "══════════════════════════════════════"
SERVICE_FILE="/etc/systemd/system/act-runner.service"
if [ -f "$SERVICE_FILE" ]; then
    echo "Service already exists"
else
    sudo tee "$SERVICE_FILE" > /dev/null << EOF
[Unit]
Description=Gitea Act Runner
After=network.target

[Service]
Type=simple
User=$USER
WorkingDirectory=$RUNNER_DIR
Environment="ANDROID_HOME=$ANDROID_HOME_DIR"
Environment="JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64"
Environment="PATH=/usr/lib/jvm/java-17-openjdk-amd64/bin:$ANDROID_HOME_DIR/cmdline-tools/latest/bin:$ANDROID_HOME_DIR/platform-tools:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
ExecStart=$RUNNER_DIR/act_runner daemon
Restart=on-failure
RestartSec=10

[Install]
WantedBy=multi-user.target
EOF

    sudo systemctl daemon-reload
    sudo systemctl enable act-runner
    sudo systemctl start act-runner
    echo "Service created and started!"
fi

echo ""
echo "══════════════════════════════════════"
echo "  DONE!"
echo "══════════════════════════════════════"
echo ""
echo "Runner is running. To check status:"
echo "  sudo systemctl status act-runner"
echo ""
echo "To test, push a commit to main:"
echo "  cd ~/itstransport/android"
echo "  git push origin main"
echo ""
echo "The workflow will:"
echo "  1. Build the release APK"
echo "  2. Copy it to backend storage"
echo "  3. Update version.json endpoint"