feat(docker-watcher): phase 7 - deployer & health checker

Deploy orchestrator with full pipeline: pull → create container →
start → network → NPM proxy → health check. Rollback on failure,
multi-instance support, max_instances enforcement, webhook notifications.
Fix NPM auth in rollback and error logging in removeInstance.

internal/api/projects.go

@@ -0,0 +1,153 @@
+package api
+
+import (
+	"errors"
+	"net/http"
+
+	"github.com/go-chi/chi/v5"
+
+	"github.com/alexei/docker-watcher/internal/store"
+)
+
+// projectRequest is the expected JSON body for creating/updating a project.
+type projectRequest struct {
+	Name        string `json:"name"`
+	Registry    string `json:"registry"`
+	Image       string `json:"image"`
+	Port        int    `json:"port"`
+	Healthcheck string `json:"healthcheck"`
+	Env         string `json:"env"`
+	Volumes     string `json:"volumes"`
+}
+
+// listProjects handles GET /api/projects.
+func (s *Server) listProjects(w http.ResponseWriter, r *http.Request) {
+	projects, err := s.store.GetAllProjects()
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to list projects: "+err.Error())
+		return
+	}
+	respondJSON(w, http.StatusOK, projects)
+}
+
+// createProject handles POST /api/projects.
+func (s *Server) createProject(w http.ResponseWriter, r *http.Request) {
+	var req projectRequest
+	if !decodeJSON(w, r, &req) {
+		return
+	}
+
+	if req.Name == "" {
+		respondError(w, http.StatusBadRequest, "name is required")
+		return
+	}
+	if req.Image == "" {
+		respondError(w, http.StatusBadRequest, "image is required")
+		return
+	}
+	if req.Env == "" {
+		req.Env = "{}"
+	}
+	if req.Volumes == "" {
+		req.Volumes = "{}"
+	}
+
+	project, err := s.store.CreateProject(store.Project{
+		Name:        req.Name,
+		Registry:    req.Registry,
+		Image:       req.Image,
+		Port:        req.Port,
+		Healthcheck: req.Healthcheck,
+		Env:         req.Env,
+		Volumes:     req.Volumes,
+	})
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to create project: "+err.Error())
+		return
+	}
+	respondJSON(w, http.StatusCreated, project)
+}
+
+// getProject handles GET /api/projects/{id}.
+func (s *Server) getProject(w http.ResponseWriter, r *http.Request) {
+	id := chi.URLParam(r, "id")
+	project, err := s.store.GetProjectByID(id)
+	if err != nil {
+		if errors.Is(err, store.ErrNotFound) {
+			respondNotFound(w, "project")
+			return
+		}
+		respondError(w, http.StatusInternalServerError, "failed to get project: "+err.Error())
+		return
+	}
+
+	// Also fetch stages for this project.
+	stages, err := s.store.GetStagesByProjectID(id)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to get stages: "+err.Error())
+		return
+	}
+
+	respondJSON(w, http.StatusOK, map[string]any{
+		"project": project,
+		"stages":  stages,
+	})
+}
+
+// updateProject handles PUT /api/projects/{id}.
+func (s *Server) updateProject(w http.ResponseWriter, r *http.Request) {
+	id := chi.URLParam(r, "id")
+
+	existing, err := s.store.GetProjectByID(id)
+	if err != nil {
+		if errors.Is(err, store.ErrNotFound) {
+			respondNotFound(w, "project")
+			return
+		}
+		respondError(w, http.StatusInternalServerError, "failed to get project: "+err.Error())
+		return
+	}
+
+	var req projectRequest
+	if !decodeJSON(w, r, &req) {
+		return
+	}
+
+	// Apply updates to existing project, preserving fields not provided.
+	updated := existing
+	if req.Name != "" {
+		updated.Name = req.Name
+	}
+	if req.Image != "" {
+		updated.Image = req.Image
+	}
+	updated.Registry = req.Registry
+	updated.Port = req.Port
+	updated.Healthcheck = req.Healthcheck
+	if req.Env != "" {
+		updated.Env = req.Env
+	}
+	if req.Volumes != "" {
+		updated.Volumes = req.Volumes
+	}
+
+	if err := s.store.UpdateProject(updated); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to update project: "+err.Error())
+		return
+	}
+	respondJSON(w, http.StatusOK, updated)
+}
+
+// deleteProject handles DELETE /api/projects/{id}.
+func (s *Server) deleteProject(w http.ResponseWriter, r *http.Request) {
+	id := chi.URLParam(r, "id")
+	if err := s.store.DeleteProject(id); err != nil {
+		if errors.Is(err, store.ErrNotFound) {
+			respondNotFound(w, "project")
+			return
+		}
+		respondError(w, http.StatusInternalServerError, "failed to delete project: "+err.Error())
+		return
+	}
+	respondJSON(w, http.StatusOK, map[string]string{"deleted": id})
+}