finished implementation

.gitignore

@@ -0,0 +1,24 @@
+# build output
+dist/
+
+# generated types
+.astro/
+
+# dependencies
+node_modules/
+
+# logs
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+
+# environment variables
+.env
+.env.production
+
+# macOS-specific files
+.DS_Store
+
+# jetbrains setting folder
+.idea/

.vscode/extensions.json

@@ -0,0 +1,4 @@
+{
+  "recommendations": ["astro-build.astro-vscode"],
+  "unwantedRecommendations": []
+}

.vscode/launch.json

@@ -0,0 +1,11 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "command": "./node_modules/.bin/astro dev",
+      "name": "Development server",
+      "request": "launch",
+      "type": "node-terminal"
+    }
+  ]
+}

README.md

@@ -0,0 +1,46 @@
+# Astro Starter Kit: Basics
+
+```sh
+deno create astro@latest -- --template basics
+```
+
+> 🧑‍🚀 **Seasoned astronaut?** Delete this file. Have fun!
+
+## 🚀 Project Structure
+
+Inside of your Astro project, you'll see the following folders and files:
+
+```text
+/
+├── public/
+│   └── favicon.svg
+├── src
+│   ├── assets
+│   │   └── astro.svg
+│   ├── components
+│   │   └── Welcome.astro
+│   ├── layouts
+│   │   └── Layout.astro
+│   └── pages
+│       └── index.astro
+└── package.json
+```
+
+To learn more about the folder structure of an Astro project, refer to [our guide on project structure](https://docs.astro.build/en/basics/project-structure/).
+
+## 🧞 Commands
+
+All commands are run from the root of the project, from a terminal:
+
+| Command                   | Action                                           |
+| :------------------------ | :----------------------------------------------- |
+| `deno install`             | Installs dependencies                            |
+| `deno dev`             | Starts local dev server at `localhost:4321`      |
+| `deno build`           | Build your production site to `./dist/`          |
+| `deno preview`         | Preview your build locally, before deploying     |
+| `deno astro ...`       | Run CLI commands like `astro add`, `astro check` |
+| `deno astro -- --help` | Get help using the Astro CLI                     |
+
+## 👀 Want to learn more?
+
+Feel free to check [our documentation](https://docs.astro.build) or jump into our [Discord server](https://astro.build/chat).

astro.config.mjs

@@ -0,0 +1,11 @@
+// @ts-check
+import { defineConfig } from 'astro/config';
+
+import node from '@astrojs/node';
+
+// https://astro.build/config
+export default defineConfig({
+  adapter: node({
+    mode: 'standalone'
+  })
+});

deno.json

@@ -0,0 +1,3 @@
+{
+  "allowScripts": ["npm:esbuild@0.27.7", "npm:sharp@0.34.5"]
+}

package.json

@@ -0,0 +1,19 @@
+{
+  "name": "",
+  "type": "module",
+  "version": "0.0.1",
+  "engines": {
+    "node": ">=22.12.0"
+  },
+  "scripts": {
+    "dev": "astro dev",
+    "build": "astro build",
+    "preview": "astro preview",
+    "astro": "astro"
+  },
+  "dependencies": {
+    "@astrojs/node": "^10.1.2",
+    "astro": "^6.4.2",
+    "neo4j-driver": "^6.0.1"
+  }
+}

public/favicon.svg

@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 128 128">
+    <path d="M50.4 78.5a75.1 75.1 0 0 0-28.5 6.9l24.2-65.7c.7-2 1.9-3.2 3.4-3.2h29c1.5 0 2.7 1.2 3.4 3.2l24.2 65.7s-11.6-7-28.5-7L67 45.5c-.4-1.7-1.6-2.8-2.9-2.8-1.3 0-2.5 1.1-2.9 2.7L50.4 78.5Zm-1.1 28.2Zm-4.2-20.2c-2 6.6-.6 15.8 4.2 20.2a17.5 17.5 0 0 1 .2-.7 5.5 5.5 0 0 1 5.7-4.5c2.8.1 4.3 1.5 4.7 4.7.2 1.1.2 2.3.2 3.5v.4c0 2.7.7 5.2 2.2 7.4a13 13 0 0 0 5.7 4.9v-.3l-.2-.3c-1.8-5.6-.5-9.5 4.4-12.8l1.5-1a73 73 0 0 0 3.2-2.2 16 16 0 0 0 6.8-11.4c.3-2 .1-4-.6-6l-.8.6-1.6 1a37 37 0 0 1-22.4 2.7c-5-.7-9.7-2-13.2-6.2Z" />
+    <style>
+        path { fill: #000; }
+        @media (prefers-color-scheme: dark) {
+            path { fill: #FFF; }
+        }
+    </style>
+</svg>

src/actions/index.ts

@@ -0,0 +1,277 @@
+import { defineAction } from "astro:actions";
+import { z } from "astro/zod";
+import { auth, driver, Integer } from "neo4j-driver";
+
+function createDB() {
+  return driver(
+    import.meta.env.NEO4J_URI,
+    auth.basic(
+      import.meta.env.NEO4J_USERNAME,
+      import.meta.env.NEO4J_PASSWORD,
+    ),
+  );
+}
+
+function parseToPojo(
+  records: Awaited<
+    ReturnType<ReturnType<ReturnType<typeof driver>["session"]>["run"]>
+  >["records"],
+) {
+  return records.map((record) => record.get("n")).map((
+    record,
+  ) => {
+    return nodeToNonPojo(record)
+  });
+}
+
+function parseToPojoWithArrayHandling(
+  records: Awaited<
+    ReturnType<ReturnType<ReturnType<typeof driver>["session"]>["run"]>
+  >["records"],
+) {
+  return records.map((record) => record.get("n")).map((
+    recordEntry,
+  ) => {
+    return nodeToNonPojo(recordEntry[0]);
+  });
+}
+
+function nodeToNonPojo(node: any) {
+	return {
+      identity: node.identity.toNumber(),
+      labels: node.labels,
+      properties: Object.fromEntries(
+        Object.entries(
+          node.properties as { [key: string]: any },
+        ).map(([key, v]) => [
+          key,
+          (v instanceof Integer ? v.toNumber() : v) as any,
+        ]),
+      ),
+    };
+}
+
+function relationToNonPojo(relation: any) {
+	return Object.fromEntries(
+		Object.entries(
+			relation as { [key: string]: any },
+		).map(([key, v]) => [
+			key,
+			(v instanceof Integer ? v.toNumber() : v) as any,
+		]),
+	)
+}
+
+export const server = {
+  listNodes: defineAction({
+    input: z.undefined(),
+    handler: async () => {
+      const db = createDB();
+      const query = "MATCH (n) RETURN n";
+      const result = await db.session().run(query);
+      return parseToPojo(result.records);
+    },
+  }),
+  deleteNode: defineAction({
+    input: z.object({
+      identity: z.number(),
+      reason: z.string(),
+    }),
+    handler: async ({ identity, reason }) => {
+      const deleteQuery = `MATCH (n) WHERE ID(n) = $id DETACH DELETE n`;
+      const db = createDB();
+      await db.executeQuery(deleteQuery, { id: identity });
+
+      const notificationQuery =
+        `CREATE (n:Notification { reason: $reason, id: $id })`;
+      await db.executeQuery(notificationQuery, { reason, id: identity });
+
+      return "ok";
+    },
+  }),
+  listParticipants: defineAction({
+    input: z.object({
+      lectureId: z.string(),
+    }),
+    handler: async ({ lectureId }) => {
+      const db = createDB();
+      const query =
+        `MATCH (l:Lecture {id: $id}) <-[:HEARS]- (n:Student) RETURN n`;
+      const result = await db.session().run(query, { id: lectureId });
+      return parseToPojo(result.records);
+    },
+  }),
+  addParticipant: defineAction({
+    input: z.object({
+      lectureId: z.string(),
+      name: z.string(),
+    }),
+    handler: async ({ lectureId, name }) => {
+      const db = createDB();
+      const query =
+        `MATCH (l:Lecture {id: $id}) CREATE (n:Student {name: $name}) -[:HEARS]-> (l)`;
+      await db.executeQuery(query, { id: lectureId, name });
+    },
+  }),
+  searchLectures: defineAction({
+    input: z.object({
+      searchTerm: z.string(),
+    }),
+    handler: async ({ searchTerm }) => {
+      const db = createDB();
+      const query = `
+		  MATCH  (e:Exam) <-[:HAS_EXAM]- (n:Lecture) <-[:TEACHES]- (p:Professor)
+		  WHERE n.name CONTAINS $searchTerm
+		  or n.id CONTAINS $searchTerm
+		  or n.topic CONTAINS $searchTerm
+		  or p.name CONTAINS $searchTerm
+		  or e.room CONTAINS $searchTerm
+		  or e.date CONTAINS $searchTerm
+		  RETURN collect(distinct n) as n
+	  `;
+
+      const result = await db.session().run(query, { searchTerm });
+      return parseToPojoWithArrayHandling(result.records);
+    },
+  }),
+  searchStudents: defineAction({
+    input: z.object({
+      searchTerm: z.string(),
+    }),
+    handler: async ({ searchTerm }) => {
+      const db = createDB();
+      const query = `
+			  MATCH  (n:Student)
+			  WHERE n.name CONTAINS $searchTerm
+			  RETURN n
+		  `;
+      const result = await db.session().run(query, { searchTerm });
+      return parseToPojo(result.records);
+    },
+  }),
+  gradeStudent: defineAction({
+    input: z.object({
+      grade: z.string(),
+      examIdentifier: z.number(),
+      matriculationNumber: z.string(),
+    }),
+    handler: async ({ grade, examIdentifier, matriculationNumber }) => {
+      const db = createDB();
+      const query = `
+			  MATCH (n:Student {matriculationNumber: $matriculationNumber})
+			  MATCH (e:Exam )
+			  WHERE id(e) = $examIdentifier and exists((n)-[:REGISTERS]->(e))
+			  CREATE (n)-[r:HAS_GRADE {grade: $grade}]->(e)
+			  return r
+		  `;
+      const result = await db.executeQuery(query, {
+        matriculationNumber,
+        examIdentifier,
+        grade,
+      });
+      return result.records.length === 1 ? "created" : "not created";
+    },
+  }),
+
+  examsForLecture: defineAction({
+    input: z.object({
+      lectureId: z.string(),
+    }),
+    handler: async ({ lectureId }) => {
+      const db = createDB();
+      const query = `
+			  MATCH  (n:Exam) <-[:HAS_EXAM]- (l:Lecture)
+			  WHERE l.id = $lectureId
+			  RETURN n
+		  `;
+      const result = await db.session().run(query, { lectureId });
+      return parseToPojo(result.records);
+    },
+  }),
+
+  deleteStudent: defineAction({
+    input: z.object({
+      matriculationNumberOrName: z.string(),
+    }),
+    handler: async ({ matriculationNumberOrName }) => {
+      const db = createDB();
+      const query = `
+			  MATCH (n:Student)
+			  WHERE n.matriculationNumber = $matriculationNumberOrName or n.name = $matriculationNumberOrName
+			  DETACH DELETE n
+		  `;
+      await db.executeQuery(query, { matriculationNumberOrName });
+    },
+  }),
+  areClassMates: defineAction({
+    input: z.object({
+      nameA: z.string(),
+      nameB: z.string(),
+    }),
+    handler: async ({ nameA, nameB }) => {
+      const db = createDB();
+      const query = `
+			  MATCH (a:Student {name: $nameA})-[:HEARS]->(l:Lecture)<-[:HEARS]-(b:Student {name: $nameB})
+			  RETURN COUNT(l) > 0 AS areClassmates
+		`;
+
+      const result = await db.session().run(query, { nameA, nameB });
+      return result.records[0].get("areClassmates");
+    },
+  }),
+
+  areColleagues: defineAction({
+    input: z.object({
+      nameA: z.string(),
+      nameB: z.string(),
+    }),
+    handler: async ({ nameA, nameB }) => {
+      const db = createDB();
+      const query = `
+	        MATCH (a:Professor {name: $nameA})-[:TEACHES]->(l:Lecture)<-[:TEACHES]-(b:Professor {name: $nameB})
+			  RETURN COUNT(l) > 0 AS areColleagues
+		`;
+
+      const result = await db.session().run(query, { nameA, nameB });
+      return result.records[0].get("areColleagues");
+    },
+  }),
+
+  findPaths: defineAction({
+    input: z.object({
+      studentName: z.string(),
+      professorName: z.string(),
+    }),
+    handler: async ({ studentName, professorName}) => {
+      const db = createDB();
+      const query = `
+			  match k = SHORTEST 1 (s:Student) -[r]-+ (p:Professor) where s.name = $studentName and p.name = $professorName return k;
+		  `;
+      const result = await db.session().run(query, {
+        studentName,
+        professorName,
+      });
+
+
+	  const paths = result.records.map(record => {
+		  const path = record.get("k");
+
+		  const sanitizedPath = {
+			  start: nodeToNonPojo(path.start),
+			  end: nodeToNonPojo(path.end),
+			  segments: path.segments.map((segment: any) => ({
+				  start: nodeToNonPojo(segment.start),
+				  relationship: relationToNonPojo(segment.relationship),
+				  end: nodeToNonPojo(segment.end),
+			  }))
+		  }
+
+		  return sanitizedPath
+	  })
+
+	  console.log(paths)
+
+      return paths[0];
+    },
+  }),
+};

src/assets/astro.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="none" width="115" height="48"><path fill="#17191E" d="M7.77 36.35C6.4 35.11 6 32.51 6.57 30.62c.99 1.2 2.35 1.57 3.75 1.78 2.18.33 4.31.2 6.33-.78.23-.12.44-.27.7-.42.18.55.23 1.1.17 1.67a4.56 4.56 0 0 1-1.94 3.23c-.43.32-.9.61-1.34.91-1.38.94-1.76 2.03-1.24 3.62l.05.17a3.63 3.63 0 0 1-1.6-1.38 3.87 3.87 0 0 1-.63-2.1c0-.37 0-.74-.05-1.1-.13-.9-.55-1.3-1.33-1.32a1.56 1.56 0 0 0-1.63 1.26c0 .06-.03.12-.05.2Z"/><path fill="url(#a)" d="M7.77 36.35C6.4 35.11 6 32.51 6.57 30.62c.99 1.2 2.35 1.57 3.75 1.78 2.18.33 4.31.2 6.33-.78.23-.12.44-.27.7-.42.18.55.23 1.1.17 1.67a4.56 4.56 0 0 1-1.94 3.23c-.43.32-.9.61-1.34.91-1.38.94-1.76 2.03-1.24 3.62l.05.17a3.63 3.63 0 0 1-1.6-1.38 3.87 3.87 0 0 1-.63-2.1c0-.37 0-.74-.05-1.1-.13-.9-.55-1.3-1.33-1.32a1.56 1.56 0 0 0-1.63 1.26c0 .06-.03.12-.05.2Z"/><path fill="#17191E" d="M.02 30.31s4.02-1.95 8.05-1.95l3.04-9.4c.11-.45.44-.76.82-.76.37 0 .7.31.82.76l3.04 9.4c4.77 0 8.05 1.95 8.05 1.95L17 11.71c-.2-.56-.53-.91-.98-.91H7.83c-.44 0-.76.35-.97.9L.02 30.31Zm42.37-5.97c0 1.64-2.05 2.62-4.88 2.62-1.85 0-2.5-.45-2.5-1.41 0-1 .8-1.49 2.65-1.49 1.67 0 3.09.03 4.73.23v.05Zm.03-2.04a21.37 21.37 0 0 0-4.37-.36c-5.32 0-7.82 1.25-7.82 4.18 0 3.04 1.71 4.2 5.68 4.2 3.35 0 5.63-.84 6.46-2.92h.14c-.03.5-.05 1-.05 1.4 0 1.07.18 1.16 1.06 1.16h4.15a16.9 16.9 0 0 1-.36-4c0-1.67.06-2.93.06-4.62 0-3.45-2.07-5.64-8.56-5.64-2.8 0-5.9.48-8.26 1.19.22.93.54 2.83.7 4.06 2.04-.96 4.95-1.37 7.2-1.37 3.11 0 3.97.71 3.97 2.15v.57Zm11.37 3c-.56.07-1.33.07-2.12.07-.83 0-1.6-.03-2.12-.1l-.02.58c0 2.85 1.87 4.52 8.45 4.52 6.2 0 8.2-1.64 8.2-4.55 0-2.74-1.33-4.09-7.2-4.39-4.58-.2-4.99-.7-4.99-1.28 0-.66.59-1 3.65-1 3.18 0 4.03.43 4.03 1.35v.2a46.13 46.13 0 0 1 4.24.03l.02-.55c0-3.36-2.8-4.46-8.2-4.46-6.08 0-8.13 1.49-8.13 4.39 0 2.6 1.64 4.23 7.48 4.48 4.3.14 4.77.62 4.77 1.28 0 .7-.7 1.03-3.71 1.03-3.47 0-4.35-.48-4.35-1.47v-.13Zm19.82-12.05a17.5 17.5 0 0 1-6.24 3.48c.03.84.03 2.4.03 3.24l1.5.02c-.02 1.63-.04 3.6-.04 4.9 0 3.04 1.6 5.32 6.58 5.32 2.1 0 3.5-.23 5.23-.6a43.77 43.77 0 0 1-.46-4.13c-1.03.34-2.34.53-3.78.53-2 0-2.82-.55-2.82-2.13 0-1.37 0-2.65.03-3.84 2.57.02 5.13.07 6.64.11-.02-1.18.03-2.9.1-4.04-2.2.04-4.65.07-6.68.07l.07-2.93h-.16Zm13.46 6.04a767.33 767.33 0 0 1 .07-3.18H82.6c.07 1.96.07 3.98.07 6.92 0 2.95-.03 4.99-.07 6.93h5.18c-.09-1.37-.11-3.68-.11-5.65 0-3.1 1.26-4 4.12-4 1.33 0 2.28.16 3.1.46.03-1.16.26-3.43.4-4.43-.86-.25-1.81-.41-2.96-.41-2.46-.03-4.26.98-5.1 3.38l-.17-.02Zm22.55 3.65c0 2.5-1.8 3.66-4.64 3.66-2.81 0-4.61-1.1-4.61-3.66s1.82-3.52 4.61-3.52c2.82 0 4.64 1.03 4.64 3.52Zm4.71-.11c0-4.96-3.87-7.18-9.35-7.18-5.5 0-9.23 2.22-9.23 7.18 0 4.94 3.49 7.59 9.21 7.59 5.77 0 9.37-2.65 9.37-7.6Z"/><defs><linearGradient id="a" x1="6.33" x2="19.43" y1="40.8" y2="34.6" gradientUnits="userSpaceOnUse"><stop stop-color="#D83333"/><stop offset="1" stop-color="#F041FF"/></linearGradient></defs></svg>

src/assets/background.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="1440" height="1024" fill="none"><path fill="url(#a)" fill-rule="evenodd" d="M-217.58 475.75c91.82-72.02 225.52-29.38 341.2-44.74C240 415.56 372.33 315.14 466.77 384.9c102.9 76.02 44.74 246.76 90.31 366.31 29.83 78.24 90.48 136.14 129.48 210.23 57.92 109.99 169.67 208.23 155.9 331.77-13.52 121.26-103.42 264.33-224.23 281.37-141.96 20.03-232.72-220.96-374.06-196.99-151.7 25.73-172.68 330.24-325.85 315.72-128.6-12.2-110.9-230.73-128.15-358.76-12.16-90.14 65.87-176.25 44.1-264.57-26.42-107.2-167.12-163.46-176.72-273.45-10.15-116.29 33.01-248.75 124.87-320.79Z" clip-rule="evenodd" style="opacity:.154"/><path fill="url(#b)" fill-rule="evenodd" d="M1103.43 115.43c146.42-19.45 275.33-155.84 413.5-103.59 188.09 71.13 409 212.64 407.06 413.88-1.94 201.25-259.28 278.6-414.96 405.96-130 106.35-240.24 294.39-405.6 265.3-163.7-28.8-161.93-274.12-284.34-386.66-134.95-124.06-436-101.46-445.82-284.6-9.68-180.38 247.41-246.3 413.54-316.9 101.01-42.93 207.83 21.06 316.62 6.61Z" clip-rule="evenodd" style="opacity:.154"/><defs><linearGradient id="b" x1="373" x2="1995.44" y1="1100" y2="118.03" gradientUnits="userSpaceOnUse"><stop stop-color="#D83333"/><stop offset="1" stop-color="#F041FF"/></linearGradient><linearGradient id="a" x1="107.37" x2="1130.66" y1="1993.35" y2="1026.31" gradientUnits="userSpaceOnUse"><stop stop-color="#3245FF"/><stop offset="1" stop-color="#BC52EE"/></linearGradient></defs></svg>

src/components/Welcome.astro

@@ -0,0 +1,210 @@
+---
+import astroLogo from '../assets/astro.svg';
+import background from '../assets/background.svg';
+---
+
+<div id="container">
+	<img id="background" src={background.src} alt="" fetchpriority="high" />
+	<main>
+		<section id="hero">
+			<a href="https://astro.build"
+				><img src={astroLogo.src} width="115" height="48" alt="Astro Homepage" /></a
+			>
+			<h1>
+				To get started, open the <code><pre>src/pages</pre></code> directory in your project.
+			</h1>
+			<section id="links">
+				<a class="button" href="https://docs.astro.build">Read our docs</a>
+				<a href="https://astro.build/chat"
+					>Join our Discord <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 127.14 96.36"
+						><path
+							fill="currentColor"
+							d="M107.7 8.07A105.15 105.15 0 0 0 81.47 0a72.06 72.06 0 0 0-3.36 6.83 97.68 97.68 0 0 0-29.11 0A72.37 72.37 0 0 0 45.64 0a105.89 105.89 0 0 0-26.25 8.09C2.79 32.65-1.71 56.6.54 80.21a105.73 105.73 0 0 0 32.17 16.15 77.7 77.7 0 0 0 6.89-11.11 68.42 68.42 0 0 1-10.85-5.18c.91-.66 1.8-1.34 2.66-2a75.57 75.57 0 0 0 64.32 0c.87.71 1.76 1.39 2.66 2a68.68 68.68 0 0 1-10.87 5.19 77 77 0 0 0 6.89 11.1 105.25 105.25 0 0 0 32.19-16.14c2.64-27.38-4.51-51.11-18.9-72.15ZM42.45 65.69C36.18 65.69 31 60 31 53s5-12.74 11.43-12.74S54 46 53.89 53s-5.05 12.69-11.44 12.69Zm42.24 0C78.41 65.69 73.25 60 73.25 53s5-12.74 11.44-12.74S96.23 46 96.12 53s-5.04 12.69-11.43 12.69Z"
+						></path></svg
+					>
+				</a>
+			</section>
+		</section>
+	</main>
+
+	<a href="https://astro.build/blog/astro-6-beta/" id="news" class="box">
+		<svg width="32" height="32" fill="none" xmlns="http://www.w3.org/2000/svg"
+			><path
+				d="M24.667 12c1.333 1.414 2 3.192 2 5.334 0 4.62-4.934 5.7-7.334 12C18.444 28.567 18 27.456 18 26c0-4.642 6.667-7.053 6.667-14Zm-5.334-5.333c1.6 1.65 2.4 3.43 2.4 5.333 0 6.602-8.06 7.59-6.4 17.334C13.111 27.787 12 25.564 12 22.666c0-4.434 7.333-8 7.333-16Zm-6-5.333C15.111 3.555 16 5.556 16 7.333c0 8.333-11.333 10.962-5.333 22-3.488-.774-6-4-6-8 0-8.667 8.666-10 8.666-20Z"
+				fill="#111827"></path></svg
+		>
+		<h2>What's New in Astro 6.0?</h2>
+		<p>
+			Redesigned dev server, fonts, live collections, built-in CSP support, and more! Click to
+			explore Astro 6.0's new features.
+		</p>
+	</a>
+</div>
+
+<style>
+	#background {
+		position: fixed;
+		top: 0;
+		left: 0;
+		width: 100%;
+		height: 100%;
+		z-index: -1;
+		filter: blur(100px);
+	}
+
+	#container {
+		font-family: Inter, Roboto, 'Helvetica Neue', 'Arial Nova', 'Nimbus Sans', Arial, sans-serif;
+		height: 100%;
+	}
+
+	main {
+		height: 100%;
+		display: flex;
+		justify-content: center;
+	}
+
+	#hero {
+		display: flex;
+		align-items: start;
+		flex-direction: column;
+		justify-content: center;
+		padding: 16px;
+	}
+
+	h1 {
+		font-size: 22px;
+		margin-top: 0.25em;
+	}
+
+	#links {
+		display: flex;
+		gap: 16px;
+	}
+
+	#links a {
+		display: flex;
+		align-items: center;
+		padding: 10px 12px;
+		color: #111827;
+		text-decoration: none;
+		transition: color 0.2s;
+	}
+
+	#links a:hover {
+		color: rgb(78, 80, 86);
+	}
+
+	#links a svg {
+		height: 1em;
+		margin-left: 8px;
+	}
+
+	#links a.button {
+		color: white;
+		background: linear-gradient(83.21deg, #3245ff 0%, #bc52ee 100%);
+		box-shadow:
+			inset 0 0 0 1px rgba(255, 255, 255, 0.12),
+			inset 0 -2px 0 rgba(0, 0, 0, 0.24);
+		border-radius: 10px;
+	}
+
+	#links a.button:hover {
+		color: rgb(230, 230, 230);
+		box-shadow: none;
+	}
+
+	pre {
+		font-family:
+			ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, Consolas, 'DejaVu Sans Mono',
+			monospace;
+		font-weight: normal;
+		background: linear-gradient(14deg, #d83333 0%, #f041ff 100%);
+		-webkit-background-clip: text;
+		-webkit-text-fill-color: transparent;
+		background-clip: text;
+		margin: 0;
+	}
+
+	h2 {
+		margin: 0 0 1em;
+		font-weight: normal;
+		color: #111827;
+		font-size: 20px;
+	}
+
+	p {
+		color: #4b5563;
+		font-size: 16px;
+		line-height: 24px;
+		letter-spacing: -0.006em;
+		margin: 0;
+	}
+
+	code {
+		display: inline-block;
+		background:
+			linear-gradient(66.77deg, #f3cddd 0%, #f5cee7 100%) padding-box,
+			linear-gradient(155deg, #d83333 0%, #f041ff 18%, #f5cee7 45%) border-box;
+		border-radius: 8px;
+		border: 1px solid transparent;
+		padding: 6px 8px;
+	}
+
+	.box {
+		padding: 16px;
+		background: rgba(255, 255, 255, 1);
+		border-radius: 16px;
+		border: 1px solid white;
+	}
+
+	#news {
+		position: absolute;
+		bottom: 16px;
+		right: 16px;
+		max-width: 300px;
+		text-decoration: none;
+		transition: background 0.2s;
+		backdrop-filter: blur(50px);
+	}
+
+	#news:hover {
+		background: rgba(255, 255, 255, 0.55);
+	}
+
+	@media screen and (max-height: 368px) {
+		#news {
+			display: none;
+		}
+	}
+
+	@media screen and (max-width: 768px) {
+		#container {
+			display: flex;
+			flex-direction: column;
+		}
+
+		#hero {
+			display: block;
+			padding-top: 10%;
+		}
+
+		#links {
+			flex-wrap: wrap;
+		}
+
+		#links a.button {
+			padding: 14px 18px;
+		}
+
+		#news {
+			right: 16px;
+			left: 16px;
+			bottom: 2.5rem;
+			max-width: 100%;
+		}
+
+		h1 {
+			line-height: 1.5;
+		}
+	}
+</style>

src/env.d.ts

@@ -0,0 +1,9 @@
+interface ImportMetaEnv {
+  readonly NEO4J_URI: string;
+  readonly NEO4J_USERNAME: string;
+  readonly NEO4J_PASSWORD: string;
+}
+
+interface ImportMeta {
+  readonly env: ImportMetaEnv;
+}

src/layouts/Layout.astro

@@ -0,0 +1,23 @@
+<!doctype html>
+<html lang="en">
+	<head>
+		<meta charset="UTF-8" />
+		<meta name="viewport" content="width=device-width" />
+		<link rel="icon" type="image/svg+xml" href="/favicon.svg" />
+		<link rel="icon" href="/favicon.ico" />
+		<meta name="generator" content={Astro.generator} />
+		<title>Astro Basics</title>
+	</head>
+	<body>
+		<slot />
+	</body>
+</html>
+
+<style>
+	html,
+	body {
+		margin: 0;
+		width: 100%;
+		height: 100%;
+	}
+</style>

src/pages/check-connection.astro

@@ -0,0 +1,49 @@
+<div>
+	<div class="container">
+		<h1>Find Paths</h1>
+		<input type="text" placeholder="student name" class="student-name">
+		<input type="text" placeholder="professor name" class="professor-name">
+		<button>find paths</button>
+		<ul></ul>
+	</div>
+</div>
+
+<script>
+import { actions } from "astro:actions";
+
+type Node = {
+	identity: number,
+	labels: string[],
+	properties: { [key: string]: any }
+}
+
+type Relationship = {
+	type: string,
+	properties: { [key: string]: any }
+}
+
+(() => {
+	const input_student = document.querySelector('.container > input.student-name')
+	const input_professor = document.querySelector('.container > input.professor-name')
+	const button = document.querySelector('.container > button')
+
+	if (input_student === null || input_professor === null || button === null || !(input_student instanceof HTMLInputElement) || !(input_professor instanceof HTMLInputElement) || !(button instanceof HTMLButtonElement)) {
+		return;
+	}
+
+	button.addEventListener('click', async () => {
+		const response = await actions.findPaths({studentName: input_student.value, professorName: input_professor.value})
+		console.log(response)
+		if (response.data === undefined) {
+			return;
+		}
+
+		const path: {start: Node, end: Node, segments: {start: Node, end: Node, relationship: Relationship }[]} = response.data
+
+		for (const segment of path.segments) {
+			const li = document.createElement('li')
+			li.textContent = `${JSON.stringify(segment.start.properties)}: ${segment.relationship.type}: ${JSON.stringify(segment.end.properties)}`
+			document.querySelector('.container > ul')?.appendChild(li)
+		}
+	})
+})()

src/pages/check-personal-connection.astro

@@ -0,0 +1,82 @@
+---
+
+---
+
+<div class="container">
+	<div class="check-student-connection-container">
+		<input type="text" placeholder="student A name" id="student-a-name">
+		<input type="text" placeholder="student B name"	id="student-b-name">
+		<button>Check Connection</button>
+		<span id="student-result"></span>
+	</div>
+
+	<div class="check-professor-connection-container">
+		<input type="text" placeholder="professor A name" id="professor-a-name">
+		<input type="text" placeholder="professor B name" id="professor-b-name">
+		<button>Check Connection</button>
+		<span id="professor-result"></span>
+	</div>
+</div>
+
+<script>
+
+	import { actions } from "astro:actions";
+
+	(() => {
+		const studentAMatriculationNumberInput = document.querySelector('.check-student-connection-container > input:nth-child(1)')
+		const studentBMatriculationNumberInput = document.querySelector('.check-student-connection-container > input:nth-child(2)')
+		const checkStudentConnectionButton = document.querySelector('.check-student-connection-container > button')
+		const studentResult = document.querySelector('.check-student-connection-container > span')
+
+		const professorAMatriculationNumberInput = document.querySelector('.check-professor-connection-container > input:nth-child(1)')
+		const professorBMatriculationNumberInput = document.querySelector('.check-professor-connection-container > input:nth-child(2)')
+		const checkProfessorConnectionButton = document.querySelector('.check-professor-connection-container > button')
+		const professorResult = document.querySelector('.check-professor-connection-container > span')
+
+		if (
+			studentAMatriculationNumberInput === null
+			|| studentBMatriculationNumberInput === null
+			|| checkStudentConnectionButton === null
+			|| !(studentAMatriculationNumberInput instanceof HTMLInputElement)
+			|| !(studentBMatriculationNumberInput instanceof HTMLInputElement)
+			|| !(checkStudentConnectionButton instanceof HTMLButtonElement)
+			|| studentResult === null
+			|| professorAMatriculationNumberInput === null
+			|| professorBMatriculationNumberInput === null
+			|| checkProfessorConnectionButton === null
+			|| !(professorAMatriculationNumberInput instanceof HTMLInputElement)
+			|| !(professorBMatriculationNumberInput instanceof HTMLInputElement)
+			|| !(checkProfessorConnectionButton instanceof HTMLButtonElement)
+			|| professorResult === null
+		) {
+			return;
+		}
+
+		checkStudentConnectionButton.addEventListener('click', async () => {
+			const response = await actions.areClassMates({
+				nameA: studentAMatriculationNumberInput.value,
+				nameB: studentBMatriculationNumberInput.value,
+			})
+			if (response.data === undefined) {
+				return;
+			}
+
+			studentResult.textContent = response.data ? 'yes' : 'no'
+		})
+
+		checkProfessorConnectionButton.addEventListener('click', async () => {
+			const response = await actions.areColleagues({
+				nameA: professorAMatriculationNumberInput.value,
+				nameB: professorBMatriculationNumberInput.value,
+			})
+			if (response.data === undefined) {
+				return;
+			}
+
+			professorResult.textContent = response.data ? 'yes' : 'no'
+		})
+	})()
+
+
+</script>
+

src/pages/delete-student.astro

@@ -0,0 +1,27 @@
+---
+
+---
+
+<div class="container">
+	<input type="text" placeholder="student name or matriculation number">
+	<button>delete student</button>
+</div>
+
+<script>
+import { actions } from "astro:actions";
+
+(() => {
+	const input = document.querySelector('.container > input')
+	const button = document.querySelector('.container > button')
+	if (input === null || button === null || !(input instanceof HTMLInputElement)) {
+		return;
+	}
+
+	button.addEventListener('click', async () => {
+		const response = await actions.deleteStudent({matriculationNumberOrName: input.value})
+		if (response.data === undefined) {
+			return;
+		}
+	})
+})()
+</script>

src/pages/deletion.astro

@@ -0,0 +1,47 @@
+
+---
+
+---
+
+<div class="container">
+	<ul></ul>
+</div>
+
+<script>
+	import {actions} from 'astro:actions'
+
+	async function listNodes() {
+		const result = await actions.listNodes();
+		const container = document.querySelector('.container > ul')
+		if (container === null) {
+			return;
+		}
+
+		if (result.data === undefined) {
+			return;
+		}
+
+		const nodes: { identity: number, labels: string[], properties: any }[] = result.data as any
+
+
+		for (const node of nodes) {
+			const li = document.createElement('li')
+			li.textContent = `(${node.labels.join(', ')}) ${JSON.stringify(node.properties)}`
+			const reasonInput = document.createElement('input')
+			reasonInput.type = 'text'
+			reasonInput.placeholder = 'reason'
+			const deleteButton = document.createElement('button')
+			deleteButton.textContent = 'delete'
+			deleteButton.addEventListener('click', () => {
+				console.log("deleting", node.identity)
+				actions.deleteNode({identity: node.identity, reason: reasonInput.value})
+			})
+			container.appendChild(li)
+			container.appendChild(reasonInput)
+			container.appendChild(deleteButton)
+		}
+	}
+
+	await listNodes()
+</script>
+

src/pages/grade-student.astro

@@ -0,0 +1,99 @@
+---
+
+---
+
+
+<div class="container">
+	<input type="text" placeholder="student name">
+	<button>search students</button>
+	<ul></ul>
+	<div class="grade-student-container">
+		<input type="text" placeholder="grade" class="grade-input">
+		<input type="text" placeholder="lecture id" class="lecture-input">
+		<input type="text" placeholder="matriculation number" class="matriculation-input">
+		<button class="find-exams-button">find exams</button>
+		<ul></ul>
+	</div>
+</div>
+
+<script>
+	import { actions } from "astro:actions";
+
+	(() => {
+		const list = document.querySelector('.container > ul')
+		const input = document.querySelector('.container > input')
+		const button = document.querySelector('.container > button')
+		if (list === null || input === null || button === null || !(input instanceof HTMLInputElement)) {
+			return;
+		}
+
+		button.addEventListener('click', async () => {
+			list.innerHTML = ''
+			const response = await actions.searchStudents({searchTerm: input.value})
+			console.log(response)
+			if (response.data === undefined) {
+				return;
+			}
+
+			const students: { identity: number, properties: { matriculationNumber: string, name: string } }[] = response.data as any
+			for (const student of students) {
+				const li = document.createElement('li')
+				li.textContent = `${student.properties.matriculationNumber}: ${student.properties.name}`
+				list.appendChild(li)
+			}
+		})
+
+		const gradeInput = document.querySelector('.grade-student-container > .grade-input')
+		const lectureInput = document.querySelector('.grade-student-container > .lecture-input')
+		const matriculationInput = document.querySelector('.grade-student-container > .matriculation-input')
+		const findExamsButton = document.querySelector('.grade-student-container > .find-exams-button')
+		const examsList = document.querySelector('.grade-student-container > ul')
+
+		console.log(gradeInput, lectureInput, matriculationInput, findExamsButton)
+
+		if (
+			gradeInput === null
+			|| lectureInput === null
+			|| matriculationInput === null
+			|| examsList === null
+			|| !(gradeInput instanceof HTMLInputElement)
+			|| !(lectureInput instanceof HTMLInputElement)
+			|| !(matriculationInput instanceof HTMLInputElement)) {
+			return;
+		}
+
+		findExamsButton?.addEventListener('click', async () => {
+			console.log(gradeInput.value)
+			const response = await actions.examsForLecture({lectureId: lectureInput.value})
+			console.log(response)
+			if (response.data === undefined) {
+				return;
+			}
+
+			const exams: { identity: number, properties: { room: string, date: string } }[] = response.data as any
+
+			for (const exam of exams) {
+				examsList.innerHTML = ''
+				const button = document.createElement('button')
+				button.addEventListener('click', async () => {
+					const result = await actions.gradeStudent({
+						examIdentifier: exam.identity,
+						grade: gradeInput.value,
+						matriculationNumber: matriculationInput.value,
+					})
+
+					if (result.data === undefined)
+						return;
+
+					if (result.data === 'created') {
+						alert('grade created')
+					} else {
+						alert('grade not created. Make sure the student is registered for the exam')
+					}
+				})
+				button.textContent = `grade for ${exam.properties.room ?? '-'}: ${exam.properties.date}`
+				examsList.appendChild(button)
+			}
+		})
+	})()
+</script>

src/pages/index.astro

@@ -0,0 +1,17 @@
+---
+import Welcome from '../components/Welcome.astro';
+import Layout from '../layouts/Layout.astro';
+
+// Welcome to Astro! Wondering what to do next? Check out the Astro documentation at https://docs.astro.build
+// Don't want to use any of this? Delete everything in this file, the `assets`, `components`, and `layouts` directories, and start fresh.
+---
+
+<Layout>
+	<a href="/deletion">Deletion</a>
+	<a href="/list-participants">List Participants of Lecture</a>
+	<a href="/search-lectures">Search Lectures</a>
+	<a href="/grade-student">Grade Student</a>
+	<a href="/delete-student">Delete Student</a>
+	<a href="/check-personal-connection">Check Connection between people</a>
+	<a href="/check-connection">Check Connection between nodes</a>
+</Layout>

src/pages/list-participants.astro

@@ -0,0 +1,52 @@
+---
+---
+
+<div class="container">
+	<input type="text" placeholder="lecture id">
+	<button>list participants</button>
+	<ul></ul>
+	<div class="add-participants-container">
+		<input type="text" placeholder="name">
+		<button>add participant</button>
+	</div>
+</div>
+
+<script>
+import { actions } from "astro:actions";
+
+	(() => {
+		const list = document.querySelector('.container > ul')
+		const input = document.querySelector('.container > input')
+		const button = document.querySelector('.container > button')
+
+		if (list === null || input === null || button === null || !(input instanceof HTMLInputElement)) {
+			return;
+		}
+
+		button.addEventListener('click', async () => {
+			const response = await actions.listParticipants({lectureId: input.value})
+
+			if (response.data === undefined) {
+				return;
+			}
+
+			const participants: { identity: number, properties: { name: string } }[] = response.data as any
+			for (const participant of participants) {
+				const li = document.createElement('li')
+				li.textContent = `${participant.properties.name}`
+				list.appendChild(li)
+			}
+		})
+
+		const addParticipantsInput = document.querySelector('.add-participants-container > input')
+		const addParticipantsButton = document.querySelector('.add-participants-container > button')
+
+		if (addParticipantsInput === null || addParticipantsButton === null || !(addParticipantsInput instanceof HTMLInputElement)) {
+			return;
+		}
+
+		button.addEventListener('click', async () => {
+			await actions.addParticipant({lectureId: input.value, name: addParticipantsInput.value})
+		})
+	})()
+</script>

src/pages/search-lectures.astro

@@ -0,0 +1,38 @@
+---
+
+---
+
+<div class="container">
+	<input type="text" placeholder="lecture id">
+	<button>search lectures</button>
+	<ul></ul>
+</div>
+
+<script>
+import { actions } from "astro:actions";
+
+	(() => {
+		const list = document.querySelector('.container > ul')
+		const input = document.querySelector('.container > input')
+		const button = document.querySelector('.container > button')
+		if (list === null || input === null || button === null || !(input instanceof HTMLInputElement)) {
+			return;
+		}
+
+		button.addEventListener('click', async () => {
+			list.innerHTML = ''
+			const response = await actions.searchLectures({searchTerm: input.value})
+			console.log(response)
+			if (response.data === undefined) {
+				return;
+			}
+
+			const lectures: { identity: number, properties: { topic: string } }[] = response.data as any
+			for (const lecture of lectures) {
+				const li = document.createElement('li')
+				li.textContent = `${lecture.properties.topic}`
+				list.appendChild(li)
+			}
+		})
+	})()
+</script>

tsconfig.json

@@ -0,0 +1,5 @@
+{
+  "extends": "astro/tsconfigs/strict",
+  "include": [".astro/types.d.ts", "**/*"],
+  "exclude": ["dist"]
+}