Move instance > purge to a separate page

internal/dis/component/server/admin/admin.go

@@ -73,6 +73,7 @@ var (
 	menuInstance  = component.DummyMenuItem()
 	menuRebuild   = component.DummyMenuItem()
 	menuGrants    = component.DummyMenuItem()
+	menuPurge     = component.DummyMenuItem()
 )
 
 func (admin *Admin) HandleRoute(ctx context.Context, route string) (handler http.Handler, err error) {
@@ -133,6 +134,11 @@ func (admin *Admin) HandleRoute(ctx context.Context, route string) (handler http
 		router.Handler(http.MethodPost, route+"grants/", iUsers) // NOTE(twiesing): This path is intentionally different!
 	}
 
+	{
+		purge := admin.instancePurge(ctx)
+		router.Handler(http.MethodGet, route+"instance/:slug/purge", purge)
+	}
+
 	// add a router for the login page
 	router.Handler(http.MethodPost, route+"login", admin.loginHandler(ctx))
 

internal/dis/component/server/admin/html/instance.html

@@ -10,7 +10,6 @@
         <a class="pure-button pure-button-small" href="#stats">Statistics</a>
         <a class="pure-button pure-button-small" href="#ssh">SSH Keys</a>
         <a class="pure-button pure-button-small" href="#snapshots">Snapshots</a>
-        <a class="pure-button pure-button-small" href="#danger">Dangerous Actions</a>
     </div>
 </div>
 
@@ -548,22 +547,4 @@
             {{ end}}
         </tbody>
     </table>
-</div>
-
-<div class="pure-u-1-1">
-    <h2 id="danger">Dangerous Actions</h2>
-</div>
-
-<div class="pure-u-1 pure-u-xl-2-5">
-    <p>
-        Purging this instance completely removes it from the distillery.
-        Backups containing the instance will remain, but it will not be possible to restore it directly.
-        You must enter the slug <code>{{ .Instance.Slug }}</code> to confirm purging.
-    </p>
-    <form class="pure-form">
-        <fieldset>
-            <input type="text" id="purge-confirm-slug" placeholder="{{ .Instance.Slug }}" />
-            <button class="remote-action pure-button pure-button-danger" data-action="purge" data-param="{{ .Instance.Slug }}" data-confirm-param="#purge-confirm-slug" data-buffer="1000" data-force-reload="/admin/">Purge Instance</button>
-        </fieldset>
-    </form>
 </div>

internal/dis/component/server/admin/html/instance_purge.html

@@ -0,0 +1,13 @@
+<div class="pure-u-1-1">
+    <p>
+        Purging this instance completely removes it from the distillery.
+        Backups containing the instance will remain, but it will not be possible to restore it directly.
+        You must enter the slug <code>{{ .Instance.Slug }}</code> to confirm purging.
+    </p>
+    <form class="pure-form">
+        <fieldset>
+            <input type="text" id="purge-confirm-slug" placeholder="{{ .Instance.Slug }}" />
+            <button class="remote-action pure-button pure-button-danger" data-action="purge" data-param="{{ .Instance.Slug }}" data-confirm-param="#purge-confirm-slug" data-buffer="1000" data-force-reload="/admin/">Purge Instance</button>
+        </fieldset>
+    </form>
+</div>

internal/dis/component/server/admin/instance.go

@@ -79,6 +79,7 @@ func (admin *Admin) instanceTabs(slug string, active string) templating.FlagFunc
 			{Title: "Overview", Path: template.URL("/admin/instance/" + slug), Active: active == "overview"},
 			{Title: "Rebuild", Path: template.URL("/admin/instance/" + slug + "/rebuild"), Active: active == "rebuild"},
 			{Title: "Users & Grants", Path: template.URL("/admin/instance/" + slug + "/users"), Active: active == "users"},
+			{Title: "Purge", Path: template.URL("/admin/instance/" + slug + "/purge"), Active: active == "purge"},
 
 			// TODO: These still need to be migrated to their own tabs
 			// Then we also need to redo the main page
@@ -90,7 +91,6 @@ func (admin *Admin) instanceTabs(slug string, active string) templating.FlagFunc
 				{Title: "Stats", Path: template.URL("/instance/" + slug + "/stats"), Active: active == "stats"},
 				{Title: "SSH", Path: template.URL("/instance/" + slug + "/ssh"), Active: active == "ssh"},
 				{Title: "Snapshots", Path: template.URL("/instance/" + slug + "/snapshots"), Active: active == "snapshots"},
-				{Title: "Danger Zone", Path: template.URL("/instance/" + slug + "/danger"), Active: active == "danger"},
 			*/
 		}
 		return flags

internal/dis/component/server/admin/instance_purge.go

@@ -0,0 +1,59 @@
+package admin
+
+import (
+	"context"
+	_ "embed"
+	"html/template"
+	"net/http"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/dis/component"
+	"github.com/FAU-CDI/wisski-distillery/internal/dis/component/server/assets"
+	"github.com/FAU-CDI/wisski-distillery/internal/dis/component/server/templating"
+	"github.com/FAU-CDI/wisski-distillery/internal/wisski"
+	"github.com/tkw1536/pkglib/httpx"
+
+	"github.com/julienschmidt/httprouter"
+)
+
+//go:embed "html/instance_purge.html"
+var instancePurgeHTML []byte
+var instancePurgeTemplate = templating.Parse[instancePurgeContext](
+	"instance_purge.html", instancePurgeHTML, nil,
+
+	templating.Assets(assets.AssetsAdmin),
+)
+
+type instancePurgeContext struct {
+	templating.RuntimeFlags
+
+	Instance *wisski.WissKI
+}
+
+func (admin *Admin) instancePurge(ctx context.Context) http.Handler {
+	tpl := instancePurgeTemplate.Prepare(
+		admin.dependencies.Templating,
+		templating.Crumbs(
+			menuAdmin,
+			menuInstances,
+			menuInstance,
+			menuPurge,
+		),
+	)
+
+	return tpl.HTMLHandlerWithFlags(func(r *http.Request) (ctx instancePurgeContext, funcs []templating.FlagFunc, err error) {
+		slug := httprouter.ParamsFromContext(r.Context()).ByName("slug")
+
+		// setup the context with just the instance
+		ctx.Instance, err = admin.dependencies.Instances.WissKI(r.Context(), slug)
+		if err != nil {
+			return ctx, nil, httpx.ErrNotFound
+		}
+
+		return ctx, []templating.FlagFunc{
+			templating.ReplaceCrumb(menuInstance, component.MenuItem{Title: "Instance", Path: template.URL("/admin/instance/" + ctx.Instance.Slug)}),
+			templating.ReplaceCrumb(menuPurge, component.MenuItem{Title: "Purge", Path: template.URL("/admin/instance/" + ctx.Instance.Slug + "/purge")}),
+			templating.Title(ctx.Instance.Slug + " - Purge"),
+			admin.instanceTabs(slug, "purge"),
+		}, nil
+	})
+}