+Project Name: byop-engine (Bring Your Own Platform Engine)
+
+Core Purpose & Vision: byop-engine is a sophisticated "meta-SaaS" platform. Its fundamental goal is to empower other businesses (the "clients" of byop-engine) to effortlessly launch, manage, and scale their own SaaS applications. It aims to abstract away the complexities of infrastructure setup, deployment, and ongoing maintenance, allowing these businesses to concentrate on their core product and customer value. byop-engine automates significant portions of the SaaS operational lifecycle.
+
+Key Features & Value Proposition:
+
+Automated SaaS Deployment Lifecycle:
+
+Application Onboarding: Clients can register their applications with byop-engine, providing details like source code location (e.g., Git repositories), technology stack, and basic configuration needs.
+Dockerfile & Docker Compose Generation: A core feature currently under development. byop-engine will intelligently generate Dockerfile and docker-compose.yml files tailored to the client's application, promoting consistency and best practices.
+Centralized, Automated Builds: Client application code will be built into Docker images on a dedicated build infrastructure (not on end-user VPS instances). This ensures efficient and reliable builds.
+Image Management: Built Docker images will be stored in a self-hosted Docker registry, managed by the byop-engine ecosystem.
+VPS Provisioning & Configuration: byop-engine integrates with multiple cloud providers (AWS, DigitalOcean, OVH are currently targeted) to automatically provision new Virtual Private Servers (VPS) for each of its client's end-customers. These VPS instances are intended to be pre-configured with Docker, Docker Compose, and Traefik (as a reverse proxy and for SSL management).
+Application Deployment: The system deploys the client's containerized application (using the pre-built image from the self-hosted registry and the generated docker-compose.yml) onto the provisioned VPS. Traefik handles ingress, routing, and SSL termination.
+Infrastructure Management & Monitoring:
+
+The system will manage the lifecycle of the provisioned VPS instances.
+Future capabilities likely include infrastructure monitoring to ensure the health and availability of client deployments.
+Client & Application Management:
+
+Provides a Go-based API (using the Gin framework) for managing byop-engine's clients, their applications, application components, and deployments.
+All metadata and state are stored persistently in an SQLite database (byop.db).
+Preview & Testing Environment:
+
+An existing previewService allows byop-engine clients to test their application builds in an isolated environment before committing to a full production-style deployment for their end-users.
+Support & Operations (Implied):
+
+The codebase includes structures related to "tickets," suggesting a built-in or planned ticketing/support management system, potentially for byop-engine's clients to manage their own end-user support.
+High-Level Architecture:
+
+Backend: Written in Go.
+API Layer: Exposes a RESTful API (handlers in handlers) using the Gin web framework.
+Service Layer (services): Contains the core business logic (e.g., GenerationService, PreviewService, and planned BuildOrchestrationService, DeploymentService).
+Data Persistence (dbstore): Uses SQLite (byop.db) for storing all operational data.
+Cloud Abstraction (cloud): Provides a common interface to interact with different cloud VPS providers.
+Authentication (auth): Manages authentication for byop-engine's clients, likely using JWT.
+Dockerized Core: byop-engine itself is designed to be run as a Docker container (as defined by its root Dockerfile).
+Current Development Focus (as of June 2025):
+
+The immediate focus is on implementing the GenerationService. This service is responsible for taking application specifications and using Go templates to generate:
+Dockerfiles for various stacks (initially Go and Node.js).
+docker-compose.yml files that define how client applications will run on the provisioned VPS, including image references (to the self-hosted registry) and Traefik integration for routing and SSL.
+Unit tests for the GenerationService are being developed and refined.
+The next steps involve creating the BuildOrchestrationService (to manage the build pipeline on a dedicated machine and push to the self-hosted registry) and the DeploymentService (to deploy the generated docker-compose.yml and run the application on the target VPS).
+Overall Deployment Strategy for Client Applications:
+
+The chosen strategy emphasizes efficiency and isolation:
+
+Client application code is built into a Docker image on a dedicated build machine.
+This image is pushed to a self-hosted Docker registry.
+For each end-customer of a byop-engine client, a new, isolated VPS is provisioned.
+This VPS runs Traefik for ingress and SSL.
+The DeploymentService transfers a generated docker-compose.yml to the VPS. This file references the image in the self-hosted registry.
+The application is started on the VPS using docker-compose up -d (after a docker-compose pull).
+This "meta-SaaS" approach aims to provide a powerful, automated, yet cost-effective platform for businesses to offer their own SaaS products.
+
+# TODO
+
+Okay, based on our discussion and the goal of implementing the Dockerfile/Compose generation and deployment strategy, here's a potential development plan for byop-engine:
+
+**Phase 1: Core Generation and Build Orchestration**
+
+1. **Template System Implementation:** ----> DONE
+ * **Action:** Create a new directory, e.g., `templates/`.
+ * **Sub-directories:**
+ * `templates/dockerfile/`: Store `Dockerfile.tmpl` for different stacks (e.g., `nodejs.Dockerfile.tmpl`, `python.Dockerfile.tmpl`, `golang.Dockerfile.tmpl`). Initially, focus on one or two common stacks.
+ * `templates/compose/`: Store `docker-compose.yml.tmpl`. This template will be crucial and needs to include placeholders for:
+ * Service name (e.g., app)
+ * Image name from your self-hosted registry (e.g., `{{ .RegistryURL }}/{{ .AppName }}:{{ .ImageTag }}`)
+ * Ports
+ * Environment variables
+ * Volume mounts (if applicable)
+ * Traefik labels (dynamic based on client's domain, app port, etc.)
+ * **Action:** Define how `BuildOrchestrationService` will authenticate and push to your self-hosted registry. This might involve secure configuration management for registry credentials.
+ * **Consideration:** If your registry requires login, the build machine will need credentials.
+
+**Phase 2: Deployment Service & VPS Interaction**
+ * `docker-compose -f <path_to_compose_file> up -d`.
+ * Update deployment status and store VPS details (IP, ID) in byop.db.
+ * **Database:** Ensure `deployments` table in byop.db can store necessary info (VPS IP, image tag used, status).
+
+2. **Traefik Configuration in Templates:**
+ * **Action:** Refine `templates/compose/base.docker-compose.yml.tmpl` to correctly generate Traefik labels.
+ * **Dynamic Data:** The `GenerationService` will need to populate:
+ * `Host()` rule (e.g., `clientname.yourdomain.com` or custom domain).
+ * Service port for Traefik to route to.
+ * Certresolver name.
+
+**Phase 3: API Endpoints & Database Updates**
+
+1. **API Endpoints for Build and Deployment:**
+ * **Apps Handler (apps.go):**
+ * Endpoint to trigger a new build for an app/version (e.g., `POST /apps/{id}/build`). This would call `BuildOrchestrationService`.
+ * Endpoint to get build status.
+ * **Deployments Handler (deployments.go):**
+ * Endpoint to create a new deployment for an app (e.g., `POST /apps/{id}/deployments`). This would trigger the `DeploymentService`. This might be called internally after a successful build or by an event like a Stripe webhook.
+ * Endpoint to get deployment status.
+2. **Database Schema Updates (dbstore):**
+ * **`apps` table:** Add `current_image_tag` or similar.
+ * **Action:** Update store.go and relevant model files with new CRUD operations.
+
+**Phase 4: External Systems Setup (Parallel Task)**
+
+1. **Dedicated Build Machine:**
+ * **Action:** Set up a dedicated machine (VM or physical) with Docker, Git, and any necessary build tools for the languages you'll support.
+ * Secure access for byop-engine to trigger builds (e.g., SSH keys).
+2. **Self-Hosted Docker Registry:**
+ * **Action:** Deploy a Docker registry (e.g., Docker's official `registry:2` image, or more feature-rich ones like Harbor).
+ * Configure security (TLS, authentication).
+ * Ensure the build machine can push to it, and production VPS instances can pull from it.
+
+**Phase 5: Testing and Refinement**
+
+1. **Unit Tests:** For new services (`GenerationService`, `BuildOrchestrationService`, `DeploymentService`).
+2. **Integration Tests:**
+ * Test template generation.
+ * Test interaction with the (mocked or real) build machine and registry.
+ * Test interaction with (mocked or real) cloud providers and SSH.
+3. **End-to-End Testing:**
+ * Full flow: Define an app -> trigger build -> see image in registry -> trigger deployment -> see app running on a test VPS accessible via Traefik.
+
+This plan is iterative. You can start with a single application stack and a simplified build/deployment flow, then expand capabilities. Remember to handle errors gracefully and provide good feedback to the user/API client at each step.
+
+
+Improvement: Implement a database migration system.
+ return models.NewErrInternalServer(fmt.Sprintf("failed to check app deployments for app ID %d", id), err)
+ }
+ }
+ if len(deployments) > 0 {
+ return models.NewErrConflict(fmt.Sprintf("cannot delete app: it is used in %d deployment(s). Please delete the deployments first", len(deployments)), nil)
+ }
+
+ // If no deployments use this app, proceed with deletion
+ query := `DELETE FROM apps WHERE id = ?`
+ result, err := s.db.ExecContext(ctx, query, id)
+ if err != nil {
+ return models.NewErrInternalServer(fmt.Sprintf("failed to delete app with ID %d", id), err)
+ }
+
+ rowsAffected, err := result.RowsAffected()
+ if err != nil {
+ return models.NewErrInternalServer(fmt.Sprintf("failed to get rows affected for app deletion ID %d", id), err)
+ }
+ if rowsAffected == 0 {
+ return models.NewErrNotFound(fmt.Sprintf("app with ID %d not found for deletion", id), nil)
+ return client, models.NewErrNotFound(fmt.Sprintf("client with ID %d not found", id), err)
+ }
+ return client, models.NewErrInternalServer(fmt.Sprintf("failed to get client with ID %d", id), err)
+ }
+ return client, nil
+}
+
+// UpdateClient updates an existing client
+func (s *SQLiteStore) UpdateClient(ctx context.Context, client models.Client) error {
+ query := `UPDATE clients SET name = ?, description = ?, contact_info = ?, active = ?, updated_at = CURRENT_TIMESTAMP WHERE id = ?` // Added CURRENT_TIMESTAMP for updated_at
+ return models.NewErrConflict(fmt.Sprintf("cannot delete component: it is used in the following app(s): %v. Please remove it from these apps first", appsUsingComponent), nil)
+ }
+
+ // If no apps use this component, proceed with deletion
+ query := `DELETE FROM components WHERE id = ?`
+ result, err := s.db.ExecContext(ctx, query, id)
+ if err != nil {
+ return models.NewErrInternalServer(fmt.Sprintf("failed to delete component with ID %d", id), err)
+ }
+
+ rowsAffected, err := result.RowsAffected()
+ if err != nil {
+ return models.NewErrInternalServer(fmt.Sprintf("failed to get rows affected for component deletion ID %d", id), err)
+ }
+ if rowsAffected == 0 {
+ // This case should ideally be caught by GetComponentByID earlier, but as a safeguard:
+ return models.NewErrNotFound(fmt.Sprintf("component with ID %d not found for deletion", id), nil)
-The BYOP Engine now supports Git-based deployments using Git hooks for continuous deployment. This allows developers to deploy applications by simply pushing to a Git repository.
-
-## How It Works
-
-1. **Initial Setup**: When a VM is initialized:
- - Creates a bare Git repository on the VM
- - Sets up a working directory for the component
- - Configures Git hooks for automatic deployment
-
-2. **Continuous Deployment**: After initial setup, developers can:
- - Add the remote repository to their local Git config
- - Push changes to trigger automatic deployment
- - Monitor deployment progress through the BYOP dashboard
-
-3. **Component-Specific Deployment**: Different components are handled appropriately:
- - **Frontend**: Built and served via Nginx
- - **Backend**: Built and managed via systemd or PM2
- - **Database**: Configuration files applied and services restarted
-
-## Usage
-
-### Adding a Remote Repository
-
-After a component is deployed, add the remote repository to your Git config:
-
-```bash
-git remote add production ssh://root@<vm-ip>/opt/byop/repos/<component-id>.git
-```
-
-### Deploying Changes
-
-Push to the remote repository to trigger a deployment:
-
-```bash
-git push production <branch>
-```
-
-The post-receive hook will automatically:
-1. Check out the code to the working directory
-2. Install dependencies
-3. Build the application
-4. Restart or reload services as needed
-
-### Monitoring Deployments
-
-You can monitor deployment status through:
-- The BYOP dashboard
-- SSH access to the VM to check logs
-- Component status indicators
-
-## Security Considerations
-
-- SSH access is controlled through credentials managed by BYOP
-- Deploy keys can be configured for secure repository access
+ h.entry.WithField("component_id", component.ID).Errorf("Failed to create temp directory: %v", err)
+ // Update component status to invalid - use background context to avoid cancellation
+ if updateErr := h.store.UpdateComponentStatus(context.Background(), component.ID, "invalid", fmt.Sprintf("Failed to create temp dir: %v", err)); updateErr != nil {
+ h.entry.WithField("component_id", component.ID).Errorf("Failed to update component status: %v", updateErr)
+ }
+ return
+ }
+ // Change permissions of tempDir to allow access by other users (e.g., buildkitd)
+ if err := os.Chmod(tempDir, 0755); err != nil {
+ h.entry.Errorf("Failed to chmod tempDir %s for component %d: %v", tempDir, component.ID, err)
+ if updateErr := h.store.UpdateComponentStatus(context.Background(), component.ID, "invalid", fmt.Sprintf("Failed to set permissions on temp dir: %v", err)); updateErr != nil {
+ h.entry.WithField("component_id", component.ID).Errorf("Failed to update component status: %v", updateErr)
+ }
+ // Attempt to clean up tempDir if chmod fails and we are returning early,
+ // as no build job will be queued for it.
+ if errRemove := os.RemoveAll(tempDir); errRemove != nil {
+ h.entry.WithField("component_id", component.ID).Errorf("Error removing temp dir %s after chmod failure: %v", tempDir, errRemove)
+ }
+ return
+ }
+ h.entry.Debugf("Set permissions to 0755 for tempDir: %s", tempDir)
+
+ // Log the start of validation
+ h.entry.WithField("component_id", component.ID).Info("Validating component repository and Dockerfile")
+ appErr := models.NewErrValidation("missing_preview_id", map[string]string{"preview_id": "Preview ID is required in URL path"}, nil)
+ models.RespondWithError(c, appErr)
+ return
+ }
+
+ previewIdInt, err := strconv.Atoi(previewIdStr)
+ if err != nil {
+ appErr := models.NewErrValidation("invalid_preview_id_format", map[string]string{"preview_id": "Invalid preview ID format, must be an integer"}, err)
+ appErr := models.NewErrNotFound("provider_not_supported_for_validation", fmt.Errorf("Provider '%s' is not supported for credential validation", providerName))
+ // If the error indicates the ticket itself was not found, that's a 404 for the ticket.
+ // Otherwise, it's an internal error fetching comments.
+ // Assuming GetTicketComments might return ErrNotFound if the ticket doesn't exist.
+ if models.IsErrNotFound(err) { // This could be ambiguous: ticket not found OR no comments found and store treats it as not found.
+ // To be more precise, one might first check if ticket exists, then fetch comments.
+ // For now, assume this means ticket itself is not found.
+ appErr := models.NewErrNotFound("ticket_not_found_for_comments", fmt.Errorf("Ticket with ID %d not found when fetching comments: %w", ticketID, err))
+ models.RespondWithError(c, appErr)
+ return
+ }
+ appErr := models.NewErrInternalServer("get_ticket_comments_failed", fmt.Errorf("Failed to get comments for ticket %d: %w", ticketID, err))
- c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid user ID"})
+ appErr := models.NewErrValidation("invalid_user_id_format_for_deployments", map[string]string{"id": "Invalid user ID format, must be an integer"}, err)
+ pc.entry.WithError(err).WithField("status", status).Error("Failed to get previews by status")
+ continue
+ }
+
+ for _, preview := range previews {
+ pc.entry.WithField("preview_id", preview.ID).WithField("app_id", preview.AppID).WithField("old_status", preview.Status).Info("Marking preview as stopped due to server shutdown")
+
+ // Update preview status to stopped
+ if err := pc.store.UpdatePreviewStatus(ctx, preview.ID, "stopped", "Server shutdown - containers may have been stopped"); err != nil {
+ pc.entry.WithError(err).WithField("preview_id", preview.ID).Error("Failed to update preview status to stopped")
+ }
+
+ // Also update the associated app status back to "ready" if it was in a preview state
+ // Log warning but don't fail the cleanup - image might already be removed or in use
+ pc.entry.WithField("image_name", imageName).WithField("ip_address", ipAddress).WithError(err).Warn("Failed to remove Docker image (this may be normal)")