#!/bin/bash
set -e

error() {
  echo "[ERROR] $1" >&2
  exit 1
}

if [ -z "$GIT_REPO" ]; then
  error "GIT_REPO is not set."
fi

# Install runtime packages if specified
if [ -n "$PACKAGES" ]; then
  echo "[PKG] Installing additional APK packages: $PACKAGES"
  apk update >/dev/null
  apk add --no-cache $(echo "$PACKAGES" | tr ',' ' ')
fi

# Extract Git host
GIT_HOST=$(echo "$GIT_REPO" | awk -F/ '{print $3}')

# Configure .netrc
if [ -n "$GIT_USERNAME" ] && [ -n "$GIT_TOKEN" ]; then
  echo "[AUTH] Configuring .netrc for Git authentication..."
  cat <<EOF > ~/.netrc
machine $GIT_HOST
login $GIT_USERNAME
password $GIT_TOKEN
EOF
  chmod 600 ~/.netrc

  export GIT_ASKPASS=true
  export GIT_TERMINAL_PROMPT=0
fi

# Clean previous checkout
rm -rf /app/repo

echo "[CLONE] Cloning repository: $GIT_REPO"
git clone "$GIT_REPO" repo

cd repo

# Checkout specific branch, tag, or commit if provided
if [ -n "$GIT_REF" ]; then
  echo "[GIT] Checking out ref: $GIT_REF"
  git fetch --all --tags
  git checkout "$GIT_REF"
fi

cd "${APP_PATH:-.}"

echo "[BUILD] Building..."
go build -o /app/app .

echo "[RUN] Starting application..."
exec /app/app