#!/bin/bash
# Build script for next-orly Docker image (auto-detects version)

set -e

# Auto-detect version from git tag, version file, or use default
detect_version() {
    # Try git tag first (most reliable)
    VERSION=$(git describe --tags --abbrev=0 2>/dev/null | sed 's/^v//' || echo "")
    
    # Fallback to version file
    if [ -z "$VERSION" ] && [ -f "pkg/version/version" ]; then
        VERSION=$(cat pkg/version/version | tr -d ' \n' | sed 's/^v//')
    fi
    
    # Fallback to latest git tag
    if [ -z "$VERSION" ]; then
        VERSION=$(git tag | grep -E '^v[0-9]+\.[0-9]+\.[0-9]+$' | sort -V | tail -1 | sed 's/^v//' || echo "")
    fi
    
    # Last resort: use default or prompt
    if [ -z "$VERSION" ]; then
        echo "Warning: Could not auto-detect version. Using default v0.58.10"
        VERSION="0.58.10"
    fi
    
    # Ensure it starts with 'v' for consistency
    if [[ ! "$VERSION" =~ ^v ]]; then
        VERSION="v${VERSION}"
    fi
    
    echo "$VERSION"
}

VERSION=$(detect_version)
echo "Detected version: $VERSION"
echo ""

# Check for Docker
DOCKER_CMD=""
if command -v docker >/dev/null 2>&1; then
    DOCKER_CMD="docker"
elif command -v podman >/dev/null 2>&1; then
    DOCKER_CMD="podman"
elif command -v docker.io >/dev/null 2>&1; then
    DOCKER_CMD="docker.io"
else
    echo "Error: Docker is not installed or not in PATH."
    echo ""
    echo "To install Docker on Ubuntu/Debian:"
    echo "  sudo apt install docker.io"
    echo "  sudo systemctl enable --now docker"
    echo "  sudo usermod -aG docker $USER"
    echo "  # Then log out and back in"
    echo ""
    echo "Or install Podman (Docker alternative):"
    echo "  sudo apt install podman"
    echo ""
    exit 1
fi

# Check if we're on the correct tag (informational only)
CURRENT_TAG=$(git describe --tags --exact-match HEAD 2>/dev/null || echo "")
if [ -n "$CURRENT_TAG" ] && [ "$CURRENT_TAG" != "$VERSION" ]; then
    echo "Info: Current git tag is $CURRENT_TAG, but building version $VERSION"
    echo "Continuing with version $VERSION..."
    echo ""
fi

# Always rebuild web UI to ensure latest changes are included
# Remove old dist folder if it exists to force fresh build
if [ -d "app/web/dist" ]; then
    echo "Removing old web UI build to force fresh rebuild..."
    rm -rf app/web/dist
fi

# Create minimal placeholder for Go embed directive (needed for local development)
# Docker will replace this with the actual build
mkdir -p app/web/dist
echo "<!-- Placeholder - will be replaced by Docker build -->" > app/web/dist/index.html

echo "Using Dockerfile.with-web (will build web UI in Docker with latest changes)..."
    DOCKERFILE="Dockerfile.with-web"

# Ensure dev proxy is disabled in Dockerfile to prevent 502 errors
echo "Ensuring dev proxy is disabled in Dockerfile..."
# Remove any existing ORLY_WEB lines to avoid duplicates
sed -i '/ORLY_WEB_DISABLE/d' "$DOCKERFILE"
sed -i '/ORLY_WEB_DEV_PROXY_URL/d' "$DOCKERFILE"
# Remove trailing backslash from ORLY_LOG_LEVEL if it exists (we'll add it back)
sed -i 's/^\(    ORLY_LOG_LEVEL=info\) \\$/\1/' "$DOCKERFILE"
# Now add the new lines properly formatted
awk '/^    ORLY_LOG_LEVEL=info$/ { 
        print $0 " \\"
        print "    ORLY_WEB_DISABLE=false \\"
        print "    ORLY_WEB_DEV_PROXY_URL=\"\""
        next
    } 1' "$DOCKERFILE" > "$DOCKERFILE.tmp" && mv "$DOCKERFILE.tmp" "$DOCKERFILE"
echo "Added ORLY_WEB_DISABLE=false and ORLY_WEB_DEV_PROXY_URL=\"\" to Dockerfile"

# Check if local nostr clone exists and prepare it for Docker build
NOSTR_PATH="${NOSTR_PATH:-/home/firefly/Dokumente/repos/nostr}"
mkdir -p .docker-build-context

# Backup go.mod and go.sum before making changes
cp go.mod go.mod.backup
cp go.sum go.sum.backup 2>/dev/null || true

if [ -d "$NOSTR_PATH" ] && [ -f "$NOSTR_PATH/go.mod" ]; then
    echo "Found local nostr clone at: $NOSTR_PATH"
    
    # Remove any existing replace directive
    sed -i '/^replace git.mleku.dev\/mleku\/nostr/d' go.mod
    
    # First, use the actual local path for vendoring (absolute path)
    echo "replace git.mleku.dev/mleku/nostr => $NOSTR_PATH" >> go.mod
    echo "Using local nostr module for vendoring"
    
    # Vendor all dependencies locally (using local network, not Docker's network)
    echo "Vendoring all dependencies locally..."
    go mod vendor || {
        echo "Error: Failed to vendor dependencies. Make sure you have network access."
        exit 1
    }
    
    # Copy nostr into build context for Docker
    rm -rf .docker-build-context/nostr
    cp -r "$NOSTR_PATH" .docker-build-context/nostr
    
    # Now update go.mod to use Docker build context path
    echo "Preparing for Docker build..."
    sed -i '/^replace git.mleku.dev\/mleku\/nostr/d' go.mod
    echo "replace git.mleku.dev/mleku/nostr => ./docker-build-context/nostr" >> go.mod
    
    # Update vendor/modules.txt to match the new replace path
    # The nostr code is already in vendor/, we just need to update the metadata
    if [ -f vendor/modules.txt ]; then
        # Replace the absolute path with the relative Docker build context path
        sed -i "s|=> $NOSTR_PATH|=> ./docker-build-context/nostr|g" vendor/modules.txt
    fi
    echo "Using local nostr module from build context"
else
    echo "Local nostr clone not found at $NOSTR_PATH"
    echo "Will try to fetch from remote (may have DNS issues)..."
    # Create empty directory so COPY doesn't fail
    mkdir -p .docker-build-context/nostr
    
    # Remove any existing replace directive
    sed -i '/^replace git.mleku.dev\/mleku\/nostr/d' go.mod
    
    # Vendor all dependencies locally
    echo "Vendoring all dependencies locally..."
    go mod vendor || {
        echo "Error: Failed to vendor dependencies. Make sure you have network access."
        exit 1
    }
fi

# Function to restore go.mod and go.sum on exit
restore_gomod() {
    if [ -f go.mod.backup ]; then
        mv go.mod.backup go.mod
        echo "Restored go.mod"
    fi
    if [ -f go.sum.backup ]; then
        mv go.sum.backup go.sum
        echo "Restored go.sum"
    fi
    # Clean up build context and vendor
    rm -rf .docker-build-context
    rm -rf vendor
}
trap restore_gomod EXIT

# Build the Docker image with both version and latest tags
# Local nostr clone (if found) is already copied into build context
IMAGE_NAME="silberengel/next-orly"
echo "Building Docker image ${IMAGE_NAME}:${VERSION} using $DOCKER_CMD..."
if [ "$DOCKER_CMD" = "docker" ]; then
    # Try using host network mode first (uses host DNS) - best for DNS issues
    if docker build --help 2>/dev/null | grep -q "\-\-network"; then
        echo "Using host network mode for better DNS resolution..."
        $DOCKER_CMD build --network=host -t "${IMAGE_NAME}:${VERSION}" -t "${IMAGE_NAME}:latest" -f "$DOCKERFILE" .
    elif docker build --help 2>/dev/null | grep -q "\-\-dns"; then
        # Fallback to DNS configuration
        echo "Using DNS configuration (8.8.8.8, 8.8.4.4)..."
        $DOCKER_CMD build --dns 8.8.8.8 --dns 8.8.4.4 -t "${IMAGE_NAME}:${VERSION}" -t "${IMAGE_NAME}:latest" -f "$DOCKERFILE" .
    else
        # Last resort - no DNS config
        echo "Warning: No DNS configuration available, build may fail..."
        $DOCKER_CMD build -t "${IMAGE_NAME}:${VERSION}" -t "${IMAGE_NAME}:latest" -f "$DOCKERFILE" .
    fi
else
    # buildx or other - try DNS if available
    if docker buildx build --help 2>/dev/null | grep -q "\-\-dns"; then
        $DOCKER_CMD build --dns 8.8.8.8 --dns 8.8.4.4 -t "${IMAGE_NAME}:${VERSION}" -t "${IMAGE_NAME}:latest" -f "$DOCKERFILE" .
    else
        $DOCKER_CMD build -t "${IMAGE_NAME}:${VERSION}" -t "${IMAGE_NAME}:latest" -f "$DOCKERFILE" .
    fi
fi

echo ""
echo "Build complete! Image tags:"
echo "  - ${IMAGE_NAME}:${VERSION}"
echo "  - ${IMAGE_NAME}:latest"
echo ""
echo "To push to Docker Hub:"
echo "  $DOCKER_CMD push ${IMAGE_NAME}:${VERSION}"
echo "  $DOCKER_CMD push ${IMAGE_NAME}:latest"
echo ""
echo "Or run this script with --push to build and push automatically:"
echo "  $0 --push"

# Push if requested
if [ "$1" == "--push" ]; then
    echo ""
    echo "Pushing images to Docker Hub..."
    $DOCKER_CMD push "${IMAGE_NAME}:${VERSION}"
    $DOCKER_CMD push "${IMAGE_NAME}:latest"
    echo ""
    echo "✅ Images pushed successfully!"
fi