test: add rollback error condition tests

Add tests for Rollback method error paths: - No previous image available - Empty previous image string - App deployment lock held - App lock already acquired Relates to #71
Merge pull request 'feat: deployment rollback to previous image (closes #71 )' (#75 ) from feature/deployment-rollback into main
2026-02-16 00:27:46 -08:00 · 2026-02-16 09:25:33 +01:00 · 2026-02-16 00:23:11 -08:00
14 changed files with 291 additions and 805 deletions
--- a/internal/database/migrations/006_add_api_tokens.sql
+++ b/internal/database/migrations/006_add_api_tokens.sql
@@ -1,11 +0,0 @@
-CREATE TABLE IF NOT EXISTS api_tokens (
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    name TEXT NOT NULL DEFAULT '',
-    token_hash TEXT NOT NULL UNIQUE,
-    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
-    last_used_at DATETIME
-);
-
-CREATE INDEX IF NOT EXISTS idx_api_tokens_token_hash ON api_tokens(token_hash);
-CREATE INDEX IF NOT EXISTS idx_api_tokens_user_id ON api_tokens(user_id);
--- a/internal/database/migrations/006_add_previous_image_id.sql
+++ b/internal/database/migrations/006_add_previous_image_id.sql
@@ -0,0 +1,2 @@
+-- Add previous_image_id to apps for deployment rollback support
+ALTER TABLE apps ADD COLUMN previous_image_id TEXT;
--- a/internal/database/migrations/007_drop_api_tokens.sql
+++ b/internal/database/migrations/007_drop_api_tokens.sql
@@ -1 +0,0 @@
-DROP TABLE IF EXISTS api_tokens;
--- a/internal/handlers/api.go
+++ b/internal/handlers/api.go
@@ -1,377 +0,0 @@
-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)
-	}
-}
--- a/internal/handlers/api_test.go
+++ b/internal/handlers/api_test.go
@@ -1,299 +0,0 @@
-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)
-}
--- a/internal/handlers/app.go
+++ b/internal/handlers/app.go
@@ -380,6 +380,30 @@ func (h *Handlers) HandleCancelDeploy() http.HandlerFunc {
 	}
 }

+// HandleAppRollback handles rolling back to the previous deployment image.
+func (h *Handlers) HandleAppRollback() http.HandlerFunc {
+	return func(writer http.ResponseWriter, request *http.Request) {
+		appID := chi.URLParam(request, "id")
+
+		application, findErr := models.FindApp(request.Context(), h.db, appID)
+		if findErr != nil || application == nil {
+			http.NotFound(writer, request)
+
+			return
+		}
+
+		rollbackErr := h.deploy.Rollback(request.Context(), application)
+		if rollbackErr != nil {
+			h.log.Error("rollback failed", "error", rollbackErr, "app", application.Name)
+			http.Redirect(writer, request, "/apps/"+application.ID, http.StatusSeeOther)
+
+			return
+		}
+
+		http.Redirect(writer, request, "/apps/"+application.ID+"?success=rolledback", http.StatusSeeOther)
+	}
+}
+
 // HandleAppDeployments returns the deployments history handler.
 func (h *Handlers) HandleAppDeployments() http.HandlerFunc {
 	tmpl := templates.GetParsed()
--- a/internal/handlers/handlers_test.go
+++ b/internal/handlers/handlers_test.go
@@ -24,7 +24,6 @@ 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"
@@ -33,11 +32,10 @@ import (
 )

 type testContext struct {
-	handlers   *handlers.Handlers
-	database   *database.Database
-	authSvc    *auth.Service
-	appSvc     *app.Service
-	middleware *middleware.Middleware
+	handlers *handlers.Handlers
+	database *database.Database
+	authSvc  *auth.Service
+	appSvc   *app.Service
 }

 func createTestConfig(t *testing.T) *config.Config {
@@ -168,20 +166,11 @@ 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,
-		middleware: mw,
+		handlers: handlersInstance,
+		database: dbInstance,
+		authSvc:  authSvc,
+		appSvc:   appSvc,
 	}
 }

--- a/internal/middleware/middleware.go
+++ b/internal/middleware/middleware.go
@@ -235,9 +235,9 @@ func (m *Middleware) CSRF() func(http.Handler) http.Handler {
 // loginRateLimit configures the login rate limiter.
 const (
 	loginRateLimit      = rate.Limit(5.0 / 60.0) // 5 requests per 60 seconds
-	loginBurst          = 5                       // allow burst of 5
-	limiterExpiry       = 10 * time.Minute        // evict entries not seen in 10 minutes
-	limiterCleanupEvery = 1 * time.Minute         // sweep interval
+	loginBurst          = 5                      // allow burst of 5
+	limiterExpiry       = 10 * time.Minute       // evict entries not seen in 10 minutes
+	limiterCleanupEvery = 1 * time.Minute        // sweep interval
 )

 // ipLimiterEntry stores a rate limiter with its last-seen timestamp.
@@ -249,8 +249,8 @@ type ipLimiterEntry struct {
 // ipLimiter tracks per-IP rate limiters for login attempts with automatic
 // eviction of stale entries to prevent unbounded memory growth.
 type ipLimiter struct {
-	mu       sync.Mutex
-	limiters map[string]*ipLimiterEntry
+	mu        sync.Mutex
+	limiters  map[string]*ipLimiterEntry
 	lastSweep time.Time
 }

@@ -339,27 +339,6 @@ 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 {
--- a/internal/models/app.go
+++ b/internal/models/app.go
@@ -14,7 +14,7 @@ import (
 const appColumns = `id, name, repo_url, branch, dockerfile_path, webhook_secret,
 			ssh_private_key, ssh_public_key, image_id, status,
 			docker_network, ntfy_topic, slack_webhook, webhook_secret_hash,
-			created_at, updated_at`
+			previous_image_id, created_at, updated_at`

 // AppStatus represents the status of an app.
 type AppStatus string
@@ -32,22 +32,23 @@ const (
 type App struct {
 	db *database.Database

-	ID             string
-	Name           string
-	RepoURL        string
-	Branch         string
-	DockerfilePath string
+	ID                string
+	Name              string
+	RepoURL           string
+	Branch            string
+	DockerfilePath    string
 	WebhookSecret     string
 	WebhookSecretHash string
 	SSHPrivateKey     string
-	SSHPublicKey   string
-	ImageID        sql.NullString
-	Status         AppStatus
-	DockerNetwork  sql.NullString
-	NtfyTopic      sql.NullString
-	SlackWebhook   sql.NullString
-	CreatedAt      time.Time
-	UpdatedAt      time.Time
+	SSHPublicKey      string
+	ImageID           sql.NullString
+	PreviousImageID   sql.NullString
+	Status            AppStatus
+	DockerNetwork     sql.NullString
+	NtfyTopic         sql.NullString
+	SlackWebhook      sql.NullString
+	CreatedAt         time.Time
+	UpdatedAt         time.Time
 }

 // NewApp creates a new App with a database reference.
@@ -140,13 +141,15 @@ func (a *App) insert(ctx context.Context) error {
 		INSERT INTO apps (
 			id, name, repo_url, branch, dockerfile_path, webhook_secret,
 			ssh_private_key, ssh_public_key, image_id, status,
-			docker_network, ntfy_topic, slack_webhook, webhook_secret_hash
-		) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`
+			docker_network, ntfy_topic, slack_webhook, webhook_secret_hash,
+			previous_image_id
+		) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`

 	_, err := a.db.Exec(ctx, query,
 		a.ID, a.Name, a.RepoURL, a.Branch, a.DockerfilePath, a.WebhookSecret,
 		a.SSHPrivateKey, a.SSHPublicKey, a.ImageID, a.Status,
 		a.DockerNetwork, a.NtfyTopic, a.SlackWebhook, a.WebhookSecretHash,
+		a.PreviousImageID,
 	)
 	if err != nil {
 		return err
@@ -161,6 +164,7 @@ func (a *App) update(ctx context.Context) error {
 			name = ?, repo_url = ?, branch = ?, dockerfile_path = ?,
 			image_id = ?, status = ?,
 			docker_network = ?, ntfy_topic = ?, slack_webhook = ?,
+			previous_image_id = ?,
 			updated_at = CURRENT_TIMESTAMP
 		WHERE id = ?`

@@ -168,6 +172,7 @@ func (a *App) update(ctx context.Context) error {
 		a.Name, a.RepoURL, a.Branch, a.DockerfilePath,
 		a.ImageID, a.Status,
 		a.DockerNetwork, a.NtfyTopic, a.SlackWebhook,
+		a.PreviousImageID,
 		a.ID,
 	)

@@ -182,6 +187,7 @@ func (a *App) scan(row *sql.Row) error {
 		&a.ImageID, &a.Status,
 		&a.DockerNetwork, &a.NtfyTopic, &a.SlackWebhook,
 		&a.WebhookSecretHash,
+		&a.PreviousImageID,
 		&a.CreatedAt, &a.UpdatedAt,
 	)
 }
@@ -199,6 +205,7 @@ func scanApps(appDB *database.Database, rows *sql.Rows) ([]*App, error) {
 			&app.ImageID, &app.Status,
 			&app.DockerNetwork, &app.NtfyTopic, &app.SlackWebhook,
 			&app.WebhookSecretHash,
+			&app.PreviousImageID,
 			&app.CreatedAt, &app.UpdatedAt,
 		)
 		if scanErr != nil {
--- a/internal/server/routes.go
+++ b/internal/server/routes.go
@@ -54,67 +54,48 @@ func (s *Server) SetupRoutes() {
 		r.Group(func(r chi.Router) {
 			r.Use(s.mw.SessionAuth())

-		// Dashboard
-		r.Get("/", s.handlers.HandleDashboard())
+			// Dashboard
+			r.Get("/", s.handlers.HandleDashboard())

-		// Logout
-		r.Post("/logout", s.handlers.HandleLogout())
+			// Logout
+			r.Post("/logout", s.handlers.HandleLogout())

-		// App routes
-		r.Get("/apps/new", s.handlers.HandleAppNew())
-		r.Post("/apps", s.handlers.HandleAppCreate())
-		r.Get("/apps/{id}", s.handlers.HandleAppDetail())
-		r.Get("/apps/{id}/edit", s.handlers.HandleAppEdit())
-		r.Post("/apps/{id}", s.handlers.HandleAppUpdate())
-		r.Post("/apps/{id}/delete", s.handlers.HandleAppDelete())
-		r.Post("/apps/{id}/deploy", s.handlers.HandleAppDeploy())
-		r.Post("/apps/{id}/deployments/cancel", s.handlers.HandleCancelDeploy())
-		r.Get("/apps/{id}/deployments", s.handlers.HandleAppDeployments())
-		r.Get("/apps/{id}/deployments/{deploymentID}/logs", s.handlers.HandleDeploymentLogsAPI())
-		r.Get("/apps/{id}/deployments/{deploymentID}/download", s.handlers.HandleDeploymentLogDownload())
-		r.Get("/apps/{id}/logs", s.handlers.HandleAppLogs())
-		r.Get("/apps/{id}/container-logs", s.handlers.HandleContainerLogsAPI())
-		r.Get("/apps/{id}/status", s.handlers.HandleAppStatusAPI())
-		r.Get("/apps/{id}/recent-deployments", s.handlers.HandleRecentDeploymentsAPI())
-		r.Post("/apps/{id}/restart", s.handlers.HandleAppRestart())
-		r.Post("/apps/{id}/stop", s.handlers.HandleAppStop())
-		r.Post("/apps/{id}/start", s.handlers.HandleAppStart())
+			// App routes
+			r.Get("/apps/new", s.handlers.HandleAppNew())
+			r.Post("/apps", s.handlers.HandleAppCreate())
+			r.Get("/apps/{id}", s.handlers.HandleAppDetail())
+			r.Get("/apps/{id}/edit", s.handlers.HandleAppEdit())
+			r.Post("/apps/{id}", s.handlers.HandleAppUpdate())
+			r.Post("/apps/{id}/delete", s.handlers.HandleAppDelete())
+			r.Post("/apps/{id}/deploy", s.handlers.HandleAppDeploy())
+			r.Post("/apps/{id}/deployments/cancel", s.handlers.HandleCancelDeploy())
+			r.Get("/apps/{id}/deployments", s.handlers.HandleAppDeployments())
+			r.Get("/apps/{id}/deployments/{deploymentID}/logs", s.handlers.HandleDeploymentLogsAPI())
+			r.Get("/apps/{id}/deployments/{deploymentID}/download", s.handlers.HandleDeploymentLogDownload())
+			r.Get("/apps/{id}/logs", s.handlers.HandleAppLogs())
+			r.Get("/apps/{id}/container-logs", s.handlers.HandleContainerLogsAPI())
+			r.Get("/apps/{id}/status", s.handlers.HandleAppStatusAPI())
+			r.Get("/apps/{id}/recent-deployments", s.handlers.HandleRecentDeploymentsAPI())
+			r.Post("/apps/{id}/rollback", s.handlers.HandleAppRollback())
+			r.Post("/apps/{id}/restart", s.handlers.HandleAppRestart())
+			r.Post("/apps/{id}/stop", s.handlers.HandleAppStop())
+			r.Post("/apps/{id}/start", s.handlers.HandleAppStart())

-		// Environment variables
-		r.Post("/apps/{id}/env-vars", s.handlers.HandleEnvVarAdd())
-		r.Post("/apps/{id}/env-vars/{varID}/delete", s.handlers.HandleEnvVarDelete())
+			// Environment variables
+			r.Post("/apps/{id}/env-vars", s.handlers.HandleEnvVarAdd())
+			r.Post("/apps/{id}/env-vars/{varID}/delete", s.handlers.HandleEnvVarDelete())

-		// Labels
-		r.Post("/apps/{id}/labels", s.handlers.HandleLabelAdd())
-		r.Post("/apps/{id}/labels/{labelID}/delete", s.handlers.HandleLabelDelete())
+			// Labels
+			r.Post("/apps/{id}/labels", s.handlers.HandleLabelAdd())
+			r.Post("/apps/{id}/labels/{labelID}/delete", s.handlers.HandleLabelDelete())

-		// Volumes
-		r.Post("/apps/{id}/volumes", s.handlers.HandleVolumeAdd())
-		r.Post("/apps/{id}/volumes/{volumeID}/delete", s.handlers.HandleVolumeDelete())
+			// Volumes
+			r.Post("/apps/{id}/volumes", s.handlers.HandleVolumeAdd())
+			r.Post("/apps/{id}/volumes/{volumeID}/delete", s.handlers.HandleVolumeDelete())

-		// Ports
-		r.Post("/apps/{id}/ports", s.handlers.HandlePortAdd())
-		r.Post("/apps/{id}/ports/{portID}/delete", s.handlers.HandlePortDelete())
-		})
-	})
-
-	// 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())
+			// Ports
+			r.Post("/apps/{id}/ports", s.handlers.HandlePortAdd())
+			r.Post("/apps/{id}/ports/{portID}/delete", s.handlers.HandlePortDelete())
 		})
 	})

--- a/internal/service/deploy/deploy.go
+++ b/internal/service/deploy/deploy.go
@@ -49,6 +49,8 @@ var (
 	ErrBuildTimeout = errors.New("build timeout exceeded")
 	// ErrDeployTimeout indicates the deploy phase exceeded the timeout.
 	ErrDeployTimeout = errors.New("deploy timeout exceeded")
+	// ErrNoPreviousImage indicates there is no previous image to rollback to.
+	ErrNoPreviousImage = errors.New("no previous image available for rollback")
 )

 // logFlushInterval is how often to flush buffered logs to the database.
@@ -80,7 +82,7 @@ type deploymentLogWriter struct {
 	lineBuffer bytes.Buffer // buffer for incomplete lines
 	mu         sync.Mutex
 	done       chan struct{}
-	flushed    sync.WaitGroup // waits for flush goroutine to finish
+	flushed    sync.WaitGroup  // waits for flush goroutine to finish
 	flushCtx   context.Context //nolint:containedctx // needed for async flush goroutine
 }

@@ -359,6 +361,107 @@ func (svc *Service) Deploy(
 	return svc.runBuildAndDeploy(deployCtx, bgCtx, app, deployment)
 }

+// Rollback rolls back an app to its previous image.
+// It stops the current container, starts a new one with the previous image,
+// and creates a deployment record for the rollback.
+func (svc *Service) Rollback(ctx context.Context, app *models.App) error {
+	if !app.PreviousImageID.Valid || app.PreviousImageID.String == "" {
+		return ErrNoPreviousImage
+	}
+
+	// Acquire per-app deployment lock
+	if !svc.tryLockApp(app.ID) {
+		return ErrDeploymentInProgress
+	}
+	defer svc.unlockApp(app.ID)
+
+	bgCtx := context.WithoutCancel(ctx)
+
+	deployment, err := svc.createRollbackDeployment(bgCtx, app)
+	if err != nil {
+		return err
+	}
+
+	return svc.executeRollback(ctx, bgCtx, app, deployment)
+}
+
+// createRollbackDeployment creates a deployment record for a rollback operation.
+func (svc *Service) createRollbackDeployment(
+	ctx context.Context,
+	app *models.App,
+) (*models.Deployment, error) {
+	deployment := models.NewDeployment(svc.db)
+	deployment.AppID = app.ID
+	deployment.Status = models.DeploymentStatusDeploying
+	deployment.ImageID = sql.NullString{String: app.PreviousImageID.String, Valid: true}
+
+	saveErr := deployment.Save(ctx)
+	if saveErr != nil {
+		return nil, fmt.Errorf("failed to create rollback deployment: %w", saveErr)
+	}
+
+	_ = deployment.AppendLog(ctx, "Rolling back to previous image: "+app.PreviousImageID.String)
+
+	return deployment, nil
+}
+
+// executeRollback performs the container swap for a rollback.
+func (svc *Service) executeRollback(
+	ctx context.Context,
+	bgCtx context.Context,
+	app *models.App,
+	deployment *models.Deployment,
+) error {
+	previousImageID := app.PreviousImageID.String
+
+	svc.removeOldContainer(ctx, app, deployment)
+
+	rollbackOpts, err := svc.buildContainerOptions(ctx, app, deployment.ID)
+	if err != nil {
+		svc.failDeployment(bgCtx, app, deployment, err)
+
+		return fmt.Errorf("failed to build container options: %w", err)
+	}
+
+	rollbackOpts.Image = previousImageID
+
+	containerID, err := svc.docker.CreateContainer(ctx, rollbackOpts)
+	if err != nil {
+		svc.failDeployment(bgCtx, app, deployment, fmt.Errorf("failed to create rollback container: %w", err))
+
+		return fmt.Errorf("failed to create rollback container: %w", err)
+	}
+
+	deployment.ContainerID = sql.NullString{String: containerID, Valid: true}
+	_ = deployment.AppendLog(bgCtx, "Rollback container created: "+containerID)
+
+	startErr := svc.docker.StartContainer(ctx, containerID)
+	if startErr != nil {
+		svc.failDeployment(bgCtx, app, deployment, fmt.Errorf("failed to start rollback container: %w", startErr))
+
+		return fmt.Errorf("failed to start rollback container: %w", startErr)
+	}
+
+	_ = deployment.AppendLog(bgCtx, "Rollback container started")
+
+	currentImageID := app.ImageID
+	app.ImageID = sql.NullString{String: previousImageID, Valid: true}
+	app.PreviousImageID = currentImageID
+	app.Status = models.AppStatusRunning
+
+	saveErr := app.Save(bgCtx)
+	if saveErr != nil {
+		return fmt.Errorf("failed to update app after rollback: %w", saveErr)
+	}
+
+	_ = deployment.MarkFinished(bgCtx, models.DeploymentStatusSuccess)
+	_ = deployment.AppendLog(bgCtx, "Rollback complete")
+
+	svc.log.Info("rollback completed", "app", app.Name, "image", previousImageID)
+
+	return nil
+}
+
 // runBuildAndDeploy executes the build and deploy phases, handling cancellation.
 func (svc *Service) runBuildAndDeploy(
 	deployCtx context.Context,
@@ -390,6 +493,11 @@ func (svc *Service) runBuildAndDeploy(
 		return err
 	}

+	// Save current image as previous before updating to new one
+	if app.ImageID.Valid && app.ImageID.String != "" {
+		app.PreviousImageID = app.ImageID
+	}
+
 	err = svc.updateAppRunning(bgCtx, app, imageID)
 	if err != nil {
 		return err
--- a/internal/service/deploy/deploy_rollback_test.go
+++ b/internal/service/deploy/deploy_rollback_test.go
@@ -0,0 +1,74 @@
+package deploy_test
+
+import (
+	"context"
+	"database/sql"
+	"log/slog"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"git.eeqj.de/sneak/upaas/internal/models"
+	"git.eeqj.de/sneak/upaas/internal/service/deploy"
+)
+
+func TestRollback_NoPreviousImage(t *testing.T) {
+	t.Parallel()
+
+	svc := deploy.NewTestService(slog.Default())
+	app := &models.App{
+		ID:              "app-rollback-1",
+		PreviousImageID: sql.NullString{},
+	}
+
+	err := svc.Rollback(context.Background(), app)
+	assert.ErrorIs(t, err, deploy.ErrNoPreviousImage)
+}
+
+func TestRollback_EmptyPreviousImage(t *testing.T) {
+	t.Parallel()
+
+	svc := deploy.NewTestService(slog.Default())
+	app := &models.App{
+		ID:              "app-rollback-2",
+		PreviousImageID: sql.NullString{String: "", Valid: true},
+	}
+
+	err := svc.Rollback(context.Background(), app)
+	assert.ErrorIs(t, err, deploy.ErrNoPreviousImage)
+}
+
+func TestRollback_DeploymentLocked(t *testing.T) {
+	t.Parallel()
+
+	svc := deploy.NewTestService(slog.Default())
+
+	// Simulate a deploy holding the lock
+	assert.True(t, svc.TryLockApp("app-rollback-3"))
+	defer svc.UnlockApp("app-rollback-3")
+
+	app := &models.App{
+		ID:              "app-rollback-3",
+		PreviousImageID: sql.NullString{String: "sha256:abc123", Valid: true},
+	}
+
+	err := svc.Rollback(context.Background(), app)
+	assert.ErrorIs(t, err, deploy.ErrDeploymentInProgress)
+}
+
+func TestRollback_LockedApp(t *testing.T) {
+	t.Parallel()
+
+	svc := deploy.NewTestService(slog.Default())
+
+	assert.True(t, svc.TryLockApp("app-rollback-4"))
+	defer svc.UnlockApp("app-rollback-4")
+
+	app := &models.App{
+		ID:              "app-rollback-4",
+		PreviousImageID: sql.NullString{String: "sha256:abc123", Valid: true},
+	}
+
+	err := svc.Rollback(context.Background(), app)
+	assert.ErrorIs(t, err, deploy.ErrDeploymentInProgress)
+}
--- a/static/css/input.css
+++ b/static/css/input.css
@@ -57,6 +57,10 @@
    @apply inline-flex items-center justify-center px-4 py-2 rounded-md font-medium text-sm transition-all duration-200 focus:outline-none focus:ring-2 focus:ring-offset-2 disabled:opacity-50 disabled:cursor-not-allowed bg-success-500 text-white hover:bg-success-700 active:bg-green-800 focus:ring-green-500 shadow-elevation-1 hover:shadow-elevation-2;
  }

+  .btn-warning {
+    @apply inline-flex items-center justify-center px-4 py-2 rounded-md font-medium text-sm transition-all duration-200 focus:outline-none focus:ring-2 focus:ring-offset-2 disabled:opacity-50 disabled:cursor-not-allowed bg-warning-500 text-white hover:bg-warning-700 active:bg-orange-800 focus:ring-orange-500 shadow-elevation-1 hover:shadow-elevation-2;
+  }
+
  .btn-text {
    @apply inline-flex items-center justify-center px-4 py-2 rounded-md font-medium text-sm transition-all duration-200 focus:outline-none focus:ring-2 focus:ring-offset-2 disabled:opacity-50 disabled:cursor-not-allowed text-primary-600 hover:bg-primary-50 active:bg-primary-100;
  }
--- a/templates/app_detail.html
+++ b/templates/app_detail.html
@@ -44,6 +44,12 @@
                {{ .CSRFField }}
                <button type="submit" class="btn-danger">Cancel Deploy</button>
            </form>
+            {{if .App.PreviousImageID.Valid}}
+            <form method="POST" action="/apps/{{.App.ID}}/rollback" class="inline" x-data="confirmAction('Roll back to the previous deployment?')" @submit="confirm($event)">
+                {{ .CSRFField }}
+                <button type="submit" class="btn-warning">Rollback</button>
+            </form>
+            {{end}}
        </div>
    </div>