Merge pull request 'feat: add JSON API with token auth (closes #69)' (#74) from feature/json-api into main

Reviewed-on: #74

internal/handlers/api.go

@@ -0,0 +1,377 @@
+package handlers
+
+import (
+	"encoding/json"
+	"net/http"
+	"strconv"
+
+	"github.com/go-chi/chi/v5"
+
+	"git.eeqj.de/sneak/upaas/internal/models"
+	"git.eeqj.de/sneak/upaas/internal/service/app"
+)
+
+// apiAppResponse is the JSON representation of an app.
+type apiAppResponse struct {
+	ID             string `json:"id"`
+	Name           string `json:"name"`
+	RepoURL        string `json:"repoUrl"`
+	Branch         string `json:"branch"`
+	DockerfilePath string `json:"dockerfilePath"`
+	Status         string `json:"status"`
+	WebhookSecret  string `json:"webhookSecret"`
+	SSHPublicKey   string `json:"sshPublicKey"`
+	CreatedAt      string `json:"createdAt"`
+	UpdatedAt      string `json:"updatedAt"`
+}
+
+// apiDeploymentResponse is the JSON representation of a deployment.
+type apiDeploymentResponse struct {
+	ID         int64  `json:"id"`
+	AppID      string `json:"appId"`
+	CommitSHA  string `json:"commitSha,omitempty"`
+	Status     string `json:"status"`
+	Duration   string `json:"duration,omitempty"`
+	StartedAt  string `json:"startedAt"`
+	FinishedAt string `json:"finishedAt,omitempty"`
+}
+
+func appToAPI(a *models.App) apiAppResponse {
+	return apiAppResponse{
+		ID:             a.ID,
+		Name:           a.Name,
+		RepoURL:        a.RepoURL,
+		Branch:         a.Branch,
+		DockerfilePath: a.DockerfilePath,
+		Status:         string(a.Status),
+		WebhookSecret:  a.WebhookSecret,
+		SSHPublicKey:   a.SSHPublicKey,
+		CreatedAt:      a.CreatedAt.Format("2006-01-02T15:04:05Z"),
+		UpdatedAt:      a.UpdatedAt.Format("2006-01-02T15:04:05Z"),
+	}
+}
+
+func deploymentToAPI(d *models.Deployment) apiDeploymentResponse {
+	resp := apiDeploymentResponse{
+		ID:        d.ID,
+		AppID:     d.AppID,
+		Status:    string(d.Status),
+		Duration:  d.Duration(),
+		StartedAt: d.StartedAt.Format("2006-01-02T15:04:05Z"),
+	}
+
+	if d.CommitSHA.Valid {
+		resp.CommitSHA = d.CommitSHA.String
+	}
+
+	if d.FinishedAt.Valid {
+		resp.FinishedAt = d.FinishedAt.Time.Format("2006-01-02T15:04:05Z")
+	}
+
+	return resp
+}
+
+// HandleAPILoginPOST returns a handler that authenticates via JSON credentials
+// and sets a session cookie.
+func (h *Handlers) HandleAPILoginPOST() http.HandlerFunc {
+	type loginRequest struct {
+		Username string `json:"username"`
+		Password string `json:"password"`
+	}
+
+	type loginResponse struct {
+		UserID   int64  `json:"userId"`
+		Username string `json:"username"`
+	}
+
+	return func(writer http.ResponseWriter, request *http.Request) {
+		var req loginRequest
+
+		decodeErr := json.NewDecoder(request.Body).Decode(&req)
+		if decodeErr != nil {
+			h.respondJSON(writer, request,
+				map[string]string{"error": "invalid JSON body"},
+				http.StatusBadRequest)
+
+			return
+		}
+
+		if req.Username == "" || req.Password == "" {
+			h.respondJSON(writer, request,
+				map[string]string{"error": "username and password are required"},
+				http.StatusBadRequest)
+
+			return
+		}
+
+		user, authErr := h.auth.Authenticate(request.Context(), req.Username, req.Password)
+		if authErr != nil {
+			h.respondJSON(writer, request,
+				map[string]string{"error": "invalid credentials"},
+				http.StatusUnauthorized)
+
+			return
+		}
+
+		sessionErr := h.auth.CreateSession(writer, request, user)
+		if sessionErr != nil {
+			h.log.Error("api: failed to create session", "error", sessionErr)
+			h.respondJSON(writer, request,
+				map[string]string{"error": "failed to create session"},
+				http.StatusInternalServerError)
+
+			return
+		}
+
+		h.respondJSON(writer, request, loginResponse{
+			UserID:   user.ID,
+			Username: user.Username,
+		}, http.StatusOK)
+	}
+}
+
+// HandleAPIListApps returns a handler that lists all apps as JSON.
+func (h *Handlers) HandleAPIListApps() http.HandlerFunc {
+	return func(writer http.ResponseWriter, request *http.Request) {
+		apps, err := h.appService.ListApps(request.Context())
+		if err != nil {
+			h.respondJSON(writer, request,
+				map[string]string{"error": "failed to list apps"},
+				http.StatusInternalServerError)
+
+			return
+		}
+
+		result := make([]apiAppResponse, 0, len(apps))
+		for _, a := range apps {
+			result = append(result, appToAPI(a))
+		}
+
+		h.respondJSON(writer, request, result, http.StatusOK)
+	}
+}
+
+// HandleAPIGetApp returns a handler that gets a single app by ID.
+func (h *Handlers) HandleAPIGetApp() http.HandlerFunc {
+	return func(writer http.ResponseWriter, request *http.Request) {
+		appID := chi.URLParam(request, "id")
+
+		application, err := h.appService.GetApp(request.Context(), appID)
+		if err != nil {
+			h.respondJSON(writer, request,
+				map[string]string{"error": "internal server error"},
+				http.StatusInternalServerError)
+
+			return
+		}
+
+		if application == nil {
+			h.respondJSON(writer, request,
+				map[string]string{"error": "app not found"},
+				http.StatusNotFound)
+
+			return
+		}
+
+		h.respondJSON(writer, request, appToAPI(application), http.StatusOK)
+	}
+}
+
+// HandleAPICreateApp returns a handler that creates a new app.
+func (h *Handlers) HandleAPICreateApp() http.HandlerFunc {
+	type createRequest struct {
+		Name           string `json:"name"`
+		RepoURL        string `json:"repoUrl"`
+		Branch         string `json:"branch"`
+		DockerfilePath string `json:"dockerfilePath"`
+		DockerNetwork  string `json:"dockerNetwork"`
+		NtfyTopic      string `json:"ntfyTopic"`
+		SlackWebhook   string `json:"slackWebhook"`
+	}
+
+	return func(writer http.ResponseWriter, request *http.Request) {
+		var req createRequest
+
+		decodeErr := json.NewDecoder(request.Body).Decode(&req)
+		if decodeErr != nil {
+			h.respondJSON(writer, request,
+				map[string]string{"error": "invalid JSON body"},
+				http.StatusBadRequest)
+
+			return
+		}
+
+		if req.Name == "" || req.RepoURL == "" {
+			h.respondJSON(writer, request,
+				map[string]string{"error": "name and repo_url are required"},
+				http.StatusBadRequest)
+
+			return
+		}
+
+		nameErr := validateAppName(req.Name)
+		if nameErr != nil {
+			h.respondJSON(writer, request,
+				map[string]string{"error": "invalid app name: " + nameErr.Error()},
+				http.StatusBadRequest)
+
+			return
+		}
+
+		createdApp, createErr := h.appService.CreateApp(request.Context(), app.CreateAppInput{
+			Name:           req.Name,
+			RepoURL:        req.RepoURL,
+			Branch:         req.Branch,
+			DockerfilePath: req.DockerfilePath,
+			DockerNetwork:  req.DockerNetwork,
+			NtfyTopic:      req.NtfyTopic,
+			SlackWebhook:   req.SlackWebhook,
+		})
+		if createErr != nil {
+			h.log.Error("api: failed to create app", "error", createErr)
+			h.respondJSON(writer, request,
+				map[string]string{"error": "failed to create app"},
+				http.StatusInternalServerError)
+
+			return
+		}
+
+		h.respondJSON(writer, request, appToAPI(createdApp), http.StatusCreated)
+	}
+}
+
+// HandleAPIDeleteApp returns a handler that deletes an app.
+func (h *Handlers) HandleAPIDeleteApp() http.HandlerFunc {
+	return func(writer http.ResponseWriter, request *http.Request) {
+		appID := chi.URLParam(request, "id")
+
+		application, err := h.appService.GetApp(request.Context(), appID)
+		if err != nil {
+			h.respondJSON(writer, request,
+				map[string]string{"error": "internal server error"},
+				http.StatusInternalServerError)
+
+			return
+		}
+
+		if application == nil {
+			h.respondJSON(writer, request,
+				map[string]string{"error": "app not found"},
+				http.StatusNotFound)
+
+			return
+		}
+
+		deleteErr := h.appService.DeleteApp(request.Context(), application)
+		if deleteErr != nil {
+			h.log.Error("api: failed to delete app", "error", deleteErr)
+			h.respondJSON(writer, request,
+				map[string]string{"error": "failed to delete app"},
+				http.StatusInternalServerError)
+
+			return
+		}
+
+		h.respondJSON(writer, request,
+			map[string]string{"status": "deleted"}, http.StatusOK)
+	}
+}
+
+// deploymentsPageLimit is the default number of deployments per page.
+const deploymentsPageLimit = 20
+
+// HandleAPIListDeployments returns a handler that lists deployments for an app.
+func (h *Handlers) HandleAPIListDeployments() http.HandlerFunc {
+	return func(writer http.ResponseWriter, request *http.Request) {
+		appID := chi.URLParam(request, "id")
+
+		application, err := h.appService.GetApp(request.Context(), appID)
+		if err != nil || application == nil {
+			h.respondJSON(writer, request,
+				map[string]string{"error": "app not found"},
+				http.StatusNotFound)
+
+			return
+		}
+
+		limit := deploymentsPageLimit
+
+		if l := request.URL.Query().Get("limit"); l != "" {
+			parsed, parseErr := strconv.Atoi(l)
+			if parseErr == nil && parsed > 0 {
+				limit = parsed
+			}
+		}
+
+		deployments, deployErr := application.GetDeployments(
+			request.Context(), limit,
+		)
+		if deployErr != nil {
+			h.respondJSON(writer, request,
+				map[string]string{"error": "failed to list deployments"},
+				http.StatusInternalServerError)
+
+			return
+		}
+
+		result := make([]apiDeploymentResponse, 0, len(deployments))
+		for _, d := range deployments {
+			result = append(result, deploymentToAPI(d))
+		}
+
+		h.respondJSON(writer, request, result, http.StatusOK)
+	}
+}
+
+// HandleAPITriggerDeploy returns a handler that triggers a deployment for an app.
+func (h *Handlers) HandleAPITriggerDeploy() http.HandlerFunc {
+	return func(writer http.ResponseWriter, request *http.Request) {
+		appID := chi.URLParam(request, "id")
+
+		application, err := h.appService.GetApp(request.Context(), appID)
+		if err != nil || application == nil {
+			h.respondJSON(writer, request,
+				map[string]string{"error": "app not found"},
+				http.StatusNotFound)
+
+			return
+		}
+
+		deployErr := h.deploy.Deploy(request.Context(), application, nil, true)
+		if deployErr != nil {
+			h.log.Error("api: failed to trigger deploy", "error", deployErr)
+			h.respondJSON(writer, request,
+				map[string]string{"error": deployErr.Error()},
+				http.StatusConflict)
+
+			return
+		}
+
+		h.respondJSON(writer, request,
+			map[string]string{"status": "deploying"}, http.StatusAccepted)
+	}
+}
+
+// HandleAPIWhoAmI returns a handler that shows the current authenticated user.
+func (h *Handlers) HandleAPIWhoAmI() http.HandlerFunc {
+	type whoAmIResponse struct {
+		UserID   int64  `json:"userId"`
+		Username string `json:"username"`
+	}
+
+	return func(writer http.ResponseWriter, request *http.Request) {
+		user, err := h.auth.GetCurrentUser(request.Context(), request)
+		if err != nil || user == nil {
+			h.respondJSON(writer, request,
+				map[string]string{"error": "unauthorized"},
+				http.StatusUnauthorized)
+
+			return
+		}
+
+		h.respondJSON(writer, request, whoAmIResponse{
+			UserID:   user.ID,
+			Username: user.Username,
+		}, http.StatusOK)
+	}
+}

internal/handlers/api_test.go

@@ -0,0 +1,299 @@
+package handlers_test
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+// apiRouter builds a chi router with the API routes using session auth middleware.
+func apiRouter(tc *testContext) http.Handler {
+	r := chi.NewRouter()
+
+	r.Route("/api/v1", func(apiR chi.Router) {
+		apiR.Post("/login", tc.handlers.HandleAPILoginPOST())
+
+		apiR.Group(func(apiR chi.Router) {
+			apiR.Use(tc.middleware.APISessionAuth())
+			apiR.Get("/whoami", tc.handlers.HandleAPIWhoAmI())
+			apiR.Get("/apps", tc.handlers.HandleAPIListApps())
+			apiR.Post("/apps", tc.handlers.HandleAPICreateApp())
+			apiR.Get("/apps/{id}", tc.handlers.HandleAPIGetApp())
+			apiR.Delete("/apps/{id}", tc.handlers.HandleAPIDeleteApp())
+			apiR.Post("/apps/{id}/deploy", tc.handlers.HandleAPITriggerDeploy())
+			apiR.Get("/apps/{id}/deployments", tc.handlers.HandleAPIListDeployments())
+		})
+	})
+
+	return r
+}
+
+// setupAPITest creates a test context with a user and returns session cookies.
+func setupAPITest(t *testing.T) (*testContext, []*http.Cookie) {
+	t.Helper()
+
+	tc := setupTestHandlers(t)
+
+	// Create a user.
+	_, err := tc.authSvc.CreateUser(t.Context(), "admin", "password123")
+	require.NoError(t, err)
+
+	// Login via the API to get session cookies.
+	r := apiRouter(tc)
+
+	loginBody := `{"username":"admin","password":"password123"}`
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/login", strings.NewReader(loginBody))
+	req.Header.Set("Content-Type", "application/json")
+
+	rr := httptest.NewRecorder()
+	r.ServeHTTP(rr, req)
+
+	require.Equal(t, http.StatusOK, rr.Code)
+
+	cookies := rr.Result().Cookies()
+	require.NotEmpty(t, cookies, "login should return session cookies")
+
+	return tc, cookies
+}
+
+// apiRequest makes an authenticated API request using session cookies.
+func apiRequest(
+	t *testing.T,
+	tc *testContext,
+	cookies []*http.Cookie,
+	method, path string,
+	body string,
+) *httptest.ResponseRecorder {
+	t.Helper()
+
+	var req *http.Request
+	if body != "" {
+		req = httptest.NewRequest(method, path, strings.NewReader(body))
+		req.Header.Set("Content-Type", "application/json")
+	} else {
+		req = httptest.NewRequest(method, path, nil)
+	}
+
+	for _, c := range cookies {
+		req.AddCookie(c)
+	}
+
+	rr := httptest.NewRecorder()
+
+	r := apiRouter(tc)
+	r.ServeHTTP(rr, req)
+
+	return rr
+}
+
+func TestAPILoginSuccess(t *testing.T) {
+	t.Parallel()
+
+	tc := setupTestHandlers(t)
+
+	_, err := tc.authSvc.CreateUser(t.Context(), "admin", "password123")
+	require.NoError(t, err)
+
+	r := apiRouter(tc)
+
+	body := `{"username":"admin","password":"password123"}`
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/login", strings.NewReader(body))
+	req.Header.Set("Content-Type", "application/json")
+
+	rr := httptest.NewRecorder()
+	r.ServeHTTP(rr, req)
+
+	assert.Equal(t, http.StatusOK, rr.Code)
+
+	var resp map[string]any
+	require.NoError(t, json.Unmarshal(rr.Body.Bytes(), &resp))
+	assert.Equal(t, "admin", resp["username"])
+
+	// Should have a Set-Cookie header.
+	assert.NotEmpty(t, rr.Result().Cookies())
+}
+
+func TestAPILoginInvalidCredentials(t *testing.T) {
+	t.Parallel()
+
+	tc := setupTestHandlers(t)
+
+	_, err := tc.authSvc.CreateUser(t.Context(), "admin", "password123")
+	require.NoError(t, err)
+
+	r := apiRouter(tc)
+
+	body := `{"username":"admin","password":"wrong"}`
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/login", strings.NewReader(body))
+	req.Header.Set("Content-Type", "application/json")
+
+	rr := httptest.NewRecorder()
+	r.ServeHTTP(rr, req)
+
+	assert.Equal(t, http.StatusUnauthorized, rr.Code)
+}
+
+func TestAPILoginMissingFields(t *testing.T) {
+	t.Parallel()
+
+	tc := setupTestHandlers(t)
+
+	r := apiRouter(tc)
+
+	body := `{"username":"","password":""}`
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/login", strings.NewReader(body))
+	req.Header.Set("Content-Type", "application/json")
+
+	rr := httptest.NewRecorder()
+	r.ServeHTTP(rr, req)
+
+	assert.Equal(t, http.StatusBadRequest, rr.Code)
+}
+
+func TestAPIRejectsUnauthenticated(t *testing.T) {
+	t.Parallel()
+
+	tc := setupTestHandlers(t)
+
+	r := apiRouter(tc)
+
+	req := httptest.NewRequest(http.MethodGet, "/api/v1/apps", nil)
+	rr := httptest.NewRecorder()
+	r.ServeHTTP(rr, req)
+
+	assert.Equal(t, http.StatusUnauthorized, rr.Code)
+}
+
+func TestAPIWhoAmI(t *testing.T) {
+	t.Parallel()
+
+	tc, cookies := setupAPITest(t)
+
+	rr := apiRequest(t, tc, cookies, http.MethodGet, "/api/v1/whoami", "")
+	assert.Equal(t, http.StatusOK, rr.Code)
+
+	var resp map[string]any
+	require.NoError(t, json.Unmarshal(rr.Body.Bytes(), &resp))
+	assert.Equal(t, "admin", resp["username"])
+}
+
+func TestAPIListAppsEmpty(t *testing.T) {
+	t.Parallel()
+
+	tc, cookies := setupAPITest(t)
+
+	rr := apiRequest(t, tc, cookies, http.MethodGet, "/api/v1/apps", "")
+	assert.Equal(t, http.StatusOK, rr.Code)
+
+	var apps []any
+	require.NoError(t, json.Unmarshal(rr.Body.Bytes(), &apps))
+	assert.Empty(t, apps)
+}
+
+func TestAPICreateApp(t *testing.T) {
+	t.Parallel()
+
+	tc, cookies := setupAPITest(t)
+
+	body := `{"name":"test-app","repoUrl":"https://github.com/example/repo"}`
+	rr := apiRequest(t, tc, cookies, http.MethodPost, "/api/v1/apps", body)
+	assert.Equal(t, http.StatusCreated, rr.Code)
+
+	var app map[string]any
+	require.NoError(t, json.Unmarshal(rr.Body.Bytes(), &app))
+	assert.Equal(t, "test-app", app["name"])
+	assert.Equal(t, "pending", app["status"])
+}
+
+func TestAPICreateAppValidation(t *testing.T) {
+	t.Parallel()
+
+	tc, cookies := setupAPITest(t)
+
+	body := `{"name":"","repoUrl":""}`
+	rr := apiRequest(t, tc, cookies, http.MethodPost, "/api/v1/apps", body)
+	assert.Equal(t, http.StatusBadRequest, rr.Code)
+}
+
+func TestAPIGetApp(t *testing.T) {
+	t.Parallel()
+
+	tc, cookies := setupAPITest(t)
+
+	body := `{"name":"my-app","repoUrl":"https://github.com/example/repo"}`
+	rr := apiRequest(t, tc, cookies, http.MethodPost, "/api/v1/apps", body)
+	require.Equal(t, http.StatusCreated, rr.Code)
+
+	var created map[string]any
+	require.NoError(t, json.Unmarshal(rr.Body.Bytes(), &created))
+
+	appID, ok := created["id"].(string)
+	require.True(t, ok)
+
+	rr = apiRequest(t, tc, cookies, http.MethodGet, "/api/v1/apps/"+appID, "")
+	assert.Equal(t, http.StatusOK, rr.Code)
+
+	var app map[string]any
+	require.NoError(t, json.Unmarshal(rr.Body.Bytes(), &app))
+	assert.Equal(t, "my-app", app["name"])
+}
+
+func TestAPIGetAppNotFound(t *testing.T) {
+	t.Parallel()
+
+	tc, cookies := setupAPITest(t)
+
+	rr := apiRequest(t, tc, cookies, http.MethodGet, "/api/v1/apps/nonexistent", "")
+	assert.Equal(t, http.StatusNotFound, rr.Code)
+}
+
+func TestAPIDeleteApp(t *testing.T) {
+	t.Parallel()
+
+	tc, cookies := setupAPITest(t)
+
+	body := `{"name":"delete-me","repoUrl":"https://github.com/example/repo"}`
+	rr := apiRequest(t, tc, cookies, http.MethodPost, "/api/v1/apps", body)
+	require.Equal(t, http.StatusCreated, rr.Code)
+
+	var created map[string]any
+	require.NoError(t, json.Unmarshal(rr.Body.Bytes(), &created))
+
+	appID, ok := created["id"].(string)
+	require.True(t, ok)
+
+	rr = apiRequest(t, tc, cookies, http.MethodDelete, "/api/v1/apps/"+appID, "")
+	assert.Equal(t, http.StatusOK, rr.Code)
+
+	rr = apiRequest(t, tc, cookies, http.MethodGet, "/api/v1/apps/"+appID, "")
+	assert.Equal(t, http.StatusNotFound, rr.Code)
+}
+
+func TestAPIListDeployments(t *testing.T) {
+	t.Parallel()
+
+	tc, cookies := setupAPITest(t)
+
+	body := `{"name":"deploy-app","repoUrl":"https://github.com/example/repo"}`
+	rr := apiRequest(t, tc, cookies, http.MethodPost, "/api/v1/apps", body)
+	require.Equal(t, http.StatusCreated, rr.Code)
+
+	var created map[string]any
+	require.NoError(t, json.Unmarshal(rr.Body.Bytes(), &created))
+
+	appID, ok := created["id"].(string)
+	require.True(t, ok)
+
+	rr = apiRequest(t, tc, cookies, http.MethodGet, "/api/v1/apps/"+appID+"/deployments", "")
+	assert.Equal(t, http.StatusOK, rr.Code)
+
+	var deployments []any
+	require.NoError(t, json.Unmarshal(rr.Body.Bytes(), &deployments))
+	assert.Empty(t, deployments)
+}

internal/handlers/handlers_test.go

@@ -24,6 +24,7 @@ import (
 	"git.eeqj.de/sneak/upaas/internal/handlers"
 	"git.eeqj.de/sneak/upaas/internal/healthcheck"
 	"git.eeqj.de/sneak/upaas/internal/logger"
+	"git.eeqj.de/sneak/upaas/internal/middleware"
 	"git.eeqj.de/sneak/upaas/internal/service/app"
 	"git.eeqj.de/sneak/upaas/internal/service/auth"
 	"git.eeqj.de/sneak/upaas/internal/service/deploy"
@@ -32,10 +33,11 @@ import (
 )
 
 type testContext struct {
-	handlers *handlers.Handlers
-	database *database.Database
-	authSvc  *auth.Service
-	appSvc   *app.Service
+	handlers   *handlers.Handlers
+	database   *database.Database
+	authSvc    *auth.Service
+	appSvc     *app.Service
+	middleware *middleware.Middleware
 }
 
 func createTestConfig(t *testing.T) *config.Config {
@@ -166,11 +168,20 @@ func setupTestHandlers(t *testing.T) *testContext {
 	)
 	require.NoError(t, handlerErr)
 
+	mw, mwErr := middleware.New(fx.Lifecycle(nil), middleware.Params{
+		Logger:  logInstance,
+		Globals: globalInstance,
+		Config:  cfg,
+		Auth:    authSvc,
+	})
+	require.NoError(t, mwErr)
+
 	return &testContext{
-		handlers: handlersInstance,
-		database: dbInstance,
-		authSvc:  authSvc,
-		appSvc:   appSvc,
+		handlers:   handlersInstance,
+		database:   dbInstance,
+		authSvc:    authSvc,
+		appSvc:     appSvc,
+		middleware: mw,
 	}
 }
 

internal/middleware/middleware.go

@@ -339,6 +339,27 @@ func (m *Middleware) LoginRateLimit() func(http.Handler) http.Handler {
 	}
 }
 
+// APISessionAuth returns middleware that requires session authentication for API routes.
+// Unlike SessionAuth, it returns JSON 401 responses instead of redirecting to /login.
+func (m *Middleware) APISessionAuth() func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(
+			writer http.ResponseWriter,
+			request *http.Request,
+		) {
+			user, err := m.params.Auth.GetCurrentUser(request.Context(), request)
+			if err != nil || user == nil {
+				writer.Header().Set("Content-Type", "application/json")
+				http.Error(writer, `{"error":"unauthorized"}`, http.StatusUnauthorized)
+
+				return
+			}
+
+			next.ServeHTTP(writer, request)
+		})
+	}
+}
+
 // SetupRequired returns middleware that redirects to setup if no user exists.
 func (m *Middleware) SetupRequired() func(http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {

internal/server/routes.go

@@ -102,6 +102,26 @@ func (s *Server) SetupRoutes() {
 		})
 	})
 
+	// API v1 routes (cookie-based session auth, no CSRF)
+	s.router.Route("/api/v1", func(r chi.Router) {
+		// Login endpoint is public (returns session cookie)
+		r.With(s.mw.LoginRateLimit()).Post("/login", s.handlers.HandleAPILoginPOST())
+
+		// All other API routes require session auth
+		r.Group(func(r chi.Router) {
+			r.Use(s.mw.APISessionAuth())
+
+			r.Get("/whoami", s.handlers.HandleAPIWhoAmI())
+
+			r.Get("/apps", s.handlers.HandleAPIListApps())
+			r.Post("/apps", s.handlers.HandleAPICreateApp())
+			r.Get("/apps/{id}", s.handlers.HandleAPIGetApp())
+			r.Delete("/apps/{id}", s.handlers.HandleAPIDeleteApp())
+			r.Post("/apps/{id}/deploy", s.handlers.HandleAPITriggerDeploy())
+			r.Get("/apps/{id}/deployments", s.handlers.HandleAPIListDeployments())
+		})
+	})
+
 	// Metrics endpoint (optional, with basic auth)
 	if s.params.Config.MetricsUsername != "" {
 		s.router.Group(func(r chi.Router) {