#!/bin/bash
set -e

# Resume Site Deployment Script
# This script helps deploy the resume site to Kubernetes via Flux CD

echo "=== Resume Site Deployment ==="
echo ""

# Configuration
GITEA_URL="${GITEA_URL:-http://192.168.1.49:13001}"
GITEA_USER="${GITEA_USER:-}"
GITEA_TOKEN="${GITEA_TOKEN:-}"
HARBOR_URL="images.caffeinetux.com"
HARBOR_USER="${HARBOR_USER:-}"
HARBOR_PASSWORD="${HARBOR_PASSWORD:-}"
REPO_NAME="resume-site"

# Function to check prerequisites
check_prereqs() {
    echo "Checking prerequisites..."

    if ! command -v kubectl &> /dev/null; then
        echo "Error: kubectl not found"
        exit 1
    fi

    if ! command -v git &> /dev/null; then
        echo "Error: git not found"
        exit 1
    fi

    echo "✓ Prerequisites met"
}

# Function to create Gitea repository
create_gitea_repo() {
    if [ -z "$GITEA_USER" ] || [ -z "$GITEA_TOKEN" ]; then
        echo "Please set GITEA_USER and GITEA_TOKEN environment variables"
        echo "Or create the repository manually at: $GITEA_URL"
        return 1
    fi

    echo "Creating Gitea repository..."

    curl -X POST "$GITEA_URL/api/v1/user/repos" \
        -H "Authorization: token $GITEA_TOKEN" \
        -H "Content-Type: application/json" \
        -d "{
            \"name\": \"$REPO_NAME\",
            \"description\": \"Nicholas Haven Resume Site\",
            \"private\": false,
            \"auto_init\": false
        }" || echo "Repository might already exist"

    echo "✓ Repository created/verified"
}

# Function to push to Gitea
push_to_gitea() {
    echo "Pushing code to Gitea..."

    # Determine the git remote URL
    if [ -n "$GITEA_USER" ]; then
        GIT_URL="$GITEA_URL/$GITEA_USER/$REPO_NAME.git"
    else
        echo "Please enter your Gitea username:"
        read GITEA_USER
        GIT_URL="$GITEA_URL/$GITEA_USER/$REPO_NAME.git"
    fi

    # Check if main branch exists, if not rename master to main
    if git branch | grep -q "master"; then
        git branch -M main
    fi

    # Add remote
    git remote remove origin 2>/dev/null || true
    git remote add origin "$GIT_URL"

    # Push
    git push -u origin main

    echo "✓ Code pushed to Gitea"
}

# Function to build and push Docker image
build_and_push() {
    if ! command -v docker &> /dev/null; then
        echo "⚠ Docker not found. Skipping image build."
        echo "Please build and push the image manually:"
        echo ""
        echo "  docker login $HARBOR_URL"
        echo "  docker build -t $HARBOR_URL/production/resume-site:latest ."
        echo "  docker push $HARBOR_URL/production/resume-site:latest"
        echo ""
        return 0
    fi

    echo "Building Docker image..."
    docker build -t "$HARBOR_URL/production/$REPO_NAME:latest" .

    if [ -n "$HARBOR_USER" ] && [ -n "$HARBOR_PASSWORD" ]; then
        echo "Logging into Harbor..."
        echo "$HARBOR_PASSWORD" | docker login "$HARBOR_URL" -u "$HARBOR_USER" --password-stdin
    else
        echo "Logging into Harbor (interactive)..."
        docker login "$HARBOR_URL"
    fi

    echo "Pushing image to Harbor..."
    docker push "$HARBOR_URL/production/$REPO_NAME:latest"

    echo "✓ Image pushed to Harbor"
}

# Function to update Flux manifests
update_flux_manifests() {
    echo "Updating Flux manifests..."

    if [ -z "$GITEA_USER" ]; then
        echo "Please enter your Gitea username:"
        read GITEA_USER
    fi

    # Update GitRepository URL
    sed -i "s|url: .*|url: $GITEA_URL/$GITEA_USER/$REPO_NAME.git|" flux/gitrepository.yaml

    echo "✓ Flux manifests updated"
}

# Function to apply Flux manifests
apply_flux() {
    echo "Applying Flux manifests to cluster..."

    kubectl apply -k flux/

    echo "✓ Flux manifests applied"
    echo ""
    echo "Checking deployment status..."
    sleep 5

    kubectl get gitrepository -n flux-system resume-site
    kubectl get helmrelease -n default resume-site
}

# Main deployment flow
main() {
    check_prereqs

    echo ""
    echo "Choose deployment option:"
    echo "1. Full deployment (create repo, push code, build image, apply flux)"
    echo "2. Create Gitea repo and push code only"
    echo "3. Build and push Docker image only"
    echo "4. Apply Flux manifests only"
    echo "5. Manual setup instructions"
    echo ""
    read -p "Enter option (1-5): " option

    case $option in
        1)
            create_gitea_repo
            update_flux_manifests
            push_to_gitea
            build_and_push
            apply_flux
            ;;
        2)
            create_gitea_repo
            update_flux_manifests
            push_to_gitea
            ;;
        3)
            build_and_push
            ;;
        4)
            apply_flux
            ;;
        5)
            show_manual_instructions
            ;;
        *)
            echo "Invalid option"
            exit 1
            ;;
    esac

    echo ""
    echo "=== Deployment Complete ==="
    echo ""
    echo "Your resume site should be available at:"
    echo "  https://resume.caffeinetux.com"
    echo ""
    echo "Monitor the deployment:"
    echo "  kubectl get pods -n default -l app.kubernetes.io/name=resume-site"
    echo "  kubectl logs -n default -l app.kubernetes.io/name=resume-site"
}

# Function to show manual instructions
show_manual_instructions() {
    cat <<'EOF'

=== Manual Deployment Instructions ===

1. Create Gitea Repository:
   - Go to http://192.168.1.49:13001
   - Create a new repository named "resume-site"

2. Update Flux GitRepository manifest:
   - Edit flux/gitrepository.yaml
   - Replace the URL with: http://192.168.1.49:13001/YOUR_USERNAME/resume-site.git

3. Push code to Gitea:
   git branch -M main
   git remote add origin http://192.168.1.49:13001/YOUR_USERNAME/resume-site.git
   git push -u origin main

4. Build and push Docker image:
   docker login images.caffeinetux.com
   docker build -t images.caffeinetux.com/production/resume-site:latest .
   docker push images.caffeinetux.com/production/resume-site:latest

5. Apply Flux manifests:
   kubectl apply -k flux/

6. Verify deployment:
   kubectl get gitrepository -n flux-system resume-site
   kubectl get helmrelease -n default resume-site
   kubectl get pods -n default -l app.kubernetes.io/name=resume-site

7. Access your site:
   https://resume.caffeinetux.com

EOF
}

# Run main if script is executed
if [ "${BASH_SOURCE[0]}" == "${0}" ]; then
    main "$@"
fi