feat: initial working version of project manager

app/src/lib/graph-interface/graph-manager.svelte.ts

@@ -109,6 +109,7 @@ export class GraphManager extends EventEmitter<{
     const serialized = {
       id: this.graph.id,
       settings: $state.snapshot(this.settings),
+      meta: this.graph.meta,
       nodes,
       edges
     };
@@ -304,7 +305,7 @@ export class GraphManager extends EventEmitter<{
     this.status = 'loading';
     this.id = graph.id;
 
-    logger.info('loading graph', $state.snapshot(graph));
+    logger.info('loading graph', graph);
 
     const nodeIds = Array.from(new Set([...graph.nodes.map((n) => n.type)]));
     await this.registry.load(nodeIds);

app/src/lib/graph-interface/graph/Wrapper.svelte

@@ -11,7 +11,7 @@
   import { setupKeymaps } from "../keymaps";
 
   type Props = {
-    graph: Graph;
+    graph?: Graph;
     registry: NodeRegistry;
 
     settings?: Record<string, any>;
@@ -85,7 +85,11 @@
 
   manager.on("save", (save) => onsave?.(save));
 
-  manager.load(graph);
+  $effect(() => {
+    if (graph) {
+      manager.load(graph);
+    }
+  });
 </script>
 
 <GraphEl {keymap} />

app/src/lib/project-manager/ProjectManager.svelte

@@ -0,0 +1,85 @@
+<script lang="ts">
+  import type { Graph } from "$lib/types";
+  import { defaultPlant } from "$lib/graph-templates";
+  import type { ProjectManager } from "./project-manager.svelte";
+
+  const { projectManager } = $props<{ projectManager: ProjectManager }>();
+
+  let showNewProject = $state(false);
+  let newProjectName = $state("");
+
+  function handleCreate() {
+    projectManager.handleCreateProject(
+      defaultPlant as unknown as Graph,
+      newProjectName,
+    );
+    newProjectName = "";
+    showNewProject = false;
+  }
+</script>
+
+<header
+  class="flex justify-between px-4 h-[70px] border-b-1 border-[var(--outline)] items-center"
+>
+  <h3>Project</h3>
+  <button
+    class="px-3 py-1 bg-[var(--layer-0)] rounded"
+    onclick={() => (showNewProject = !showNewProject)}
+  >
+    New
+  </button>
+</header>
+
+{#if showNewProject}
+  <div
+    class="flex justify-between px-4 h-[70px] border-b-1 border-[var(--outline)] items-center gap-2"
+  >
+    <input
+      type="text"
+      bind:value={newProjectName}
+      placeholder="Project name"
+      class="flex-1 min-w-0 px-2 py-2 bg-gray-800 border border-gray-700 rounded"
+      onkeydown={(e) => e.key === "Enter" && handleCreate()}
+    />
+    <button class="cursor-pointer" onclick={() => handleCreate()}>
+      Create
+    </button>
+  </div>
+{/if}
+
+<div class="p-4 text-white min-h-screen">
+  {#if projectManager.loading}
+    <p>Loading...</p>
+  {/if}
+
+  <ul class="space-y-2">
+    {#each projectManager.projects as project (project.id)}
+      <li>
+        <div
+          class="w-full text-left px-3 py-2 rounded cursor-pointer {projectManager
+            .activeProjectId.value === project.id
+            ? 'bg-blue-600'
+            : 'bg-gray-800 hover:bg-gray-700'}"
+          onclick={() => projectManager.handleSelectProject(project.id!)}
+          role="button"
+          tabindex="0"
+          onkeydown={(e) =>
+            e.key === "Enter" &&
+            projectManager.handleSelectProject(project.id!)}
+        >
+          <div class="flex justify-between items-center">
+            <span>{project.meta?.title || "Untitled"}</span>
+            <button
+              class="text-red-400 hover:text-red-300"
+              onclick={() => {
+                projectManager.handleDeleteProject(project.id!);
+              }}
+            >
+              ×
+            </button>
+          </div>
+        </div>
+      </li>
+    {/each}
+  </ul>
+</div>

app/src/lib/project-manager/project-database.svelte.ts

@@ -0,0 +1,54 @@
+import type { Graph } from '@nodarium/types';
+import { type IDBPDatabase, openDB } from 'idb';
+
+export interface GraphDatabase {
+  projects: Graph;
+}
+
+const DB_NAME = 'nodarium-graphs';
+const DB_VERSION = 1;
+const STORE_NAME = 'graphs';
+
+let dbPromise: Promise<IDBPDatabase<GraphDatabase>> | null = null;
+
+export function getDB() {
+  if (!dbPromise) {
+    dbPromise = openDB<GraphDatabase>(DB_NAME, DB_VERSION, {
+      upgrade(db) {
+        if (!db.objectStoreNames.contains(STORE_NAME)) {
+          db.createObjectStore(STORE_NAME, { keyPath: 'id' });
+        }
+      }
+    });
+  }
+  return dbPromise;
+}
+
+export async function getGraph(id: number): Promise<Graph | undefined> {
+  const db = await getDB();
+  return db.get(STORE_NAME, id);
+}
+
+export async function saveGraph(graph: Graph): Promise<Graph> {
+  const db = await getDB();
+  graph.meta = { ...graph.meta, lastModified: new Date().toISOString() };
+  console.log('SAVING GRAPH', { graph });
+  await db.put(STORE_NAME, graph);
+  return graph;
+}
+
+export async function deleteGraph(id: number): Promise<void> {
+  const db = await getDB();
+  await db.delete(STORE_NAME, id);
+  console.log('DELETE GRAPH', { id });
+}
+
+export async function getGraphs(): Promise<Graph[]> {
+  const db = await getDB();
+  return db.getAll(STORE_NAME);
+}
+
+export async function clear(): Promise<void> {
+  const db = await getDB();
+  return db.clear(STORE_NAME);
+}

app/src/lib/project-manager/project-manager.svelte.ts

@@ -0,0 +1,93 @@
+import * as templates from '$lib/graph-templates';
+import { localState } from '$lib/helpers/localState.svelte';
+import type { Graph } from '@nodarium/types';
+import * as db from './project-database.svelte';
+
+export class ProjectManager {
+  public graph = $state<Graph>();
+  private projects = $state<Graph[]>([]);
+  private activeProjectId = localState<number | undefined>(
+    'node.activeProjectId',
+    undefined
+  );
+  public readonly loading = $derived(this.graph?.id !== this.activeProjectId.value);
+
+  constructor() {
+    this.init();
+  }
+
+  async saveGraph(g: Graph) {
+    db.saveGraph(g);
+  }
+
+  private async init() {
+    await db.getDB();
+    this.projects = await db.getGraphs();
+
+    console.log('PM: INIT', {
+      projects: this.projects,
+      activeProjectId: this.activeProjectId.value
+    });
+
+    if (this.activeProjectId.value !== undefined) {
+      let loadedGraph = await db.getGraph(this.activeProjectId.value);
+      console.log('PM: LOAD ACTIVE PROJECT', { loadedGraph });
+      if (loadedGraph) {
+        console.log('Load active project');
+        this.graph = loadedGraph;
+      }
+    }
+
+    if (!this.graph) {
+      console.log('Load first active project', { projectsAmount: this.projects.length });
+      if (this.projects?.length && this.projects[0]?.id !== undefined) {
+        this.graph = this.projects[0];
+        this.activeProjectId.value = this.graph.id;
+      }
+    }
+
+    if (!this.graph) {
+      console.log('Create default project');
+      this.handleCreateProject();
+    }
+  }
+
+  public handleCreateProject(
+    g: Graph = templates.defaultPlant as unknown as Graph,
+    title: string = 'New Project'
+  ) {
+    let id = g?.id || 0;
+    while (this.projects.find((p) => p.id === id)) {
+      id++;
+    }
+
+    console.log('CREATE PROJECT', { id, title });
+
+    g.id = id;
+    if (!g.meta) g.meta = {};
+    if (!g.meta.title) g.meta.title = title;
+
+    db.saveGraph(g);
+    this.projects = [...this.projects, g];
+    this.handleSelectProject(id);
+  }
+
+  public async handleDeleteProject(projectId: number) {
+    await db.deleteGraph(projectId);
+    if (this.projects.length === 1) {
+      this.graph = undefined;
+      this.projects = [];
+    } else {
+      this.projects = this.projects.filter((p) => p.id !== projectId);
+      this.handleSelectProject(this.projects[0].id);
+    }
+  }
+
+  public async handleSelectProject(id: number) {
+    if (this.activeProjectId.value !== id) {
+      const project = await db.getGraph(id);
+      this.graph = project;
+      this.activeProjectId.value = id;
+    }
+  }
+}

app/src/lib/sidebar/Panel.svelte

@@ -43,7 +43,4 @@
     align-items: center;
     padding-left: 1em;
   }
-  h3 {
-    margin: 0px;
-  }
 </style>

app/src/lib/sidebar/panels/GraphSource.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
   import type { Graph } from "$lib/types";
 
-  const { graph }: { graph: Graph } = $props();
+  const { graph }: { graph?: Graph } = $props();
 
   function convert(g: Graph): string {
     return JSON.stringify(
@@ -16,5 +16,5 @@
 </script>
 
 <pre>
-  {convert(graph)}
+  {graph ? convert(graph) : 'No graph loaded'}
 </pre>

app/src/routes/+page.svelte

@@ -28,6 +28,8 @@
   import BenchmarkPanel from "$lib/sidebar/panels/BenchmarkPanel.svelte";
   import { debounceAsyncFunction } from "$lib/helpers";
   import GraphSource from "$lib/sidebar/panels/GraphSource.svelte";
+  import { ProjectManager } from "$lib/project-manager/project-manager.svelte";
+  import ProjectManagerEl from "$lib/project-manager/ProjectManager.svelte";
 
   let performanceStore = createPerformanceStore();
 
@@ -37,6 +39,7 @@
   const runtimeCache = new MemoryRuntimeCache();
   const memoryRuntime = new MemoryRuntimeExecutor(nodeRegistry, runtimeCache);
   memoryRuntime.perf = performanceStore;
+  const pm = new ProjectManager();
 
   const runtime = $derived(
     appSettings.value.debug.useWorker ? workerRuntime : memoryRuntime,
@@ -64,15 +67,6 @@
   let activeNode = $state<NodeInstance | undefined>(undefined);
   let scene = $state<Group>(null!);
 
-  let graph = $state(
-    localStorage.getItem("graph")
-      ? JSON.parse(localStorage.getItem("graph")!)
-      : templates.defaultPlant,
-  );
-  function handleSave(graph: Graph) {
-    localStorage.setItem("graph", JSON.stringify(graph));
-  }
-
   let graphInterface = $state<ReturnType<typeof GraphInterface>>(null!);
   let viewerComponent = $state<ReturnType<typeof Viewer>>();
   const manager = $derived(graphInterface?.manager);
@@ -172,7 +166,7 @@
 <svelte:document onkeydown={applicationKeymap.handleKeyboardEvent} />
 
 <div class="wrapper manager-{manager?.status}">
-  <header class="h-[40px] border-b-1 border-[var(--outline)]"></header>
+  <header></header>
   <Grid.Row>
     <Grid.Cell>
       <Viewer
@@ -183,19 +177,21 @@
       />
     </Grid.Cell>
     <Grid.Cell>
-      <GraphInterface
-        {graph}
-        bind:this={graphInterface}
-        registry={nodeRegistry}
-        showGrid={appSettings.value.nodeInterface.showNodeGrid}
-        snapToGrid={appSettings.value.nodeInterface.snapToGrid}
-        bind:activeNode
-        bind:showHelp={appSettings.value.nodeInterface.showHelp}
-        bind:settings={graphSettings}
-        bind:settingTypes={graphSettingTypes}
-        onresult={(result) => handleUpdate(result)}
-        onsave={(graph) => handleSave(graph)}
-      />
+      {#if pm.graph}
+        <GraphInterface
+          graph={pm.graph}
+          bind:this={graphInterface}
+          registry={nodeRegistry}
+          showGrid={appSettings.value.nodeInterface.showNodeGrid}
+          snapToGrid={appSettings.value.nodeInterface.snapToGrid}
+          bind:activeNode
+          bind:showHelp={appSettings.value.nodeInterface.showHelp}
+          bind:settings={graphSettings}
+          bind:settingTypes={graphSettingTypes}
+          onsave={(g) => pm.saveGraph(g)}
+          onresult={(result) => handleUpdate(result)}
+        />
+      {/if}
       <Sidebar>
         <Panel id="general" title="General" icon="i-[tabler--settings]">
           <NestedSettings
@@ -236,13 +232,16 @@
             <PerformanceViewer data={$performanceStore} />
           {/if}
         </Panel>
+        <Panel id="projects" icon="i-[tabler--folder-open]">
+          <ProjectManagerEl projectManager={pm} />
+        </Panel>
         <Panel
           id="graph-source"
           title="Graph Source"
           hidden={!appSettings.value.debug.showGraphJson}
           icon="i-[tabler--code]"
         >
-          <GraphSource graph={graph && manager.serialize()} />
+          <GraphSource graph={pm.graph ?? manager?.serialize()} />
         </Panel>
         <Panel
           id="benchmark"
@@ -285,7 +284,7 @@
     width: 100vw;
     color: white;
     display: grid;
-    grid-template-rows: 40px 1fr;
+    grid-template-rows: 0px 1fr;
   }
 
   .wrapper :global(canvas) {