first MVP

prisma/migrations/20251114190833_init/migration.sql

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+-- CreateTable
+CREATE TABLE "Person" (
+    "id" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "company" TEXT,
+    "role" TEXT,
+    "email" TEXT,
+    "location" TEXT,
+    "sectors" TEXT[] DEFAULT ARRAY[]::TEXT[],
+    "interests" TEXT[] DEFAULT ARRAY[]::TEXT[],
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "Person_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "Connection" (
+    "id" TEXT NOT NULL,
+    "personAId" TEXT NOT NULL,
+    "personBId" TEXT NOT NULL,
+    "introducedByChain" TEXT[] DEFAULT ARRAY[]::TEXT[],
+    "eventLabels" TEXT[] DEFAULT ARRAY[]::TEXT[],
+    "notes" TEXT,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "Connection_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "Person_name_idx" ON "Person"("name");
+
+-- CreateIndex
+CREATE INDEX "Connection_personAId_idx" ON "Connection"("personAId");
+
+-- CreateIndex
+CREATE INDEX "Connection_personBId_idx" ON "Connection"("personBId");
+
+-- AddForeignKey
+ALTER TABLE "Connection" ADD CONSTRAINT "Connection_personAId_fkey" FOREIGN KEY ("personAId") REFERENCES "Person"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "Connection" ADD CONSTRAINT "Connection_personBId_fkey" FOREIGN KEY ("personBId") REFERENCES "Person"("id") ON DELETE CASCADE ON UPDATE CASCADE;

prisma/migrations/20251114191515_connection_pair_constraints/migration.sql

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+-- Enforce undirected connection uniqueness and prevent self-edges
+
+-- Prevent self-edge (A == B)
+ALTER TABLE "Connection"
+  ADD CONSTRAINT "Connection_no_self_edge"
+  CHECK ("personAId" <> "personBId");
+
+-- Unique undirected pair using functional index on LEAST/GREATEST
+-- Ensures only one edge exists for a given unordered pair {A,B}
+CREATE UNIQUE INDEX IF NOT EXISTS "Connection_undirected_pair_unique"
+ON "Connection" (
+  (LEAST("personAId","personBId")),
+  (GREATEST("personAId","personBId"))
+);

prisma/migrations/migration_lock.toml

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+# Please do not edit this file manually
+# It should be added in your version-control system (e.g., Git)
+provider = "postgresql"

prisma/schema.prisma

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+// This is your Prisma schema file,
+// learn more about it in the docs: https://pris.ly/d/prisma-schema
+
+// Looking for ways to speed up your queries, or scale easily with your serverless or edge functions?
+// Try Prisma Accelerate: https://pris.ly/cli/accelerate-init
+
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "postgresql"
+  url      = env("DATABASE_URL")
+}
+
+model Person {
+  id        String   @id @default(uuid())
+  name      String
+  company   String?
+  role      String?
+  email     String?
+  location  String?
+  sectors   String[] @default([])
+  interests String[] @default([])
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+
+  // Relations (undirected connections modeled as two directed FKs)
+  connectionsA Connection[] @relation("ConnectionsA")
+  connectionsB Connection[] @relation("ConnectionsB")
+
+  @@index([name])
+}
+
+model Connection {
+  id                String   @id @default(uuid())
+  personAId         String
+  personBId         String
+  personA           Person   @relation("ConnectionsA", fields: [personAId], references: [id], onDelete: Cascade)
+  personB           Person   @relation("ConnectionsB", fields: [personBId], references: [id], onDelete: Cascade)
+  introducedByChain String[] @default([])
+  eventLabels       String[] @default([])
+  notes             String?
+  createdAt         DateTime @default(now())
+
+  @@index([personAId])
+  @@index([personBId])
+  // Uniqueness of undirected pair (A,B) and self-edge prevention enforced via SQL migration with
+  // a functional unique index on (LEAST(personAId, personBId), GREATEST(personAId, personBId))
+  // and a CHECK (personAId <> personBId).
+}

prisma/seed.ts

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+// prisma/seed.ts
+import "dotenv/config";
+import { PrismaClient } from "@prisma/client";
+
+const prisma = new PrismaClient();
+
+type SeedPerson = {
+  name: string;
+  company?: string;
+  role?: string;
+  email?: string;
+  location?: string;
+  sectors?: string[];
+  interests?: string[];
+};
+
+const people: SeedPerson[] = [
+  { name: "Alex Carter", company: "GreenFields", role: "Founder", email: "alex@greenfields.io", location: "Brussels", sectors: ["agriculture", "sustainability"], interests: ["funding", "network"] },
+  { name: "John Miller", company: "BuildRight", role: "PM", email: "john@buildright.eu", location: "Amsterdam", sectors: ["construction"], interests: ["knowledge", "network"] },
+  { name: "Mark Li", company: "BioPharmX", role: "Analyst", email: "mark@biopharmx.com", location: "Zurich", sectors: ["pharma"], interests: ["team", "network"] },
+  { name: "Sara Gomez", company: "AeroNext", role: "VP BizDev", email: "sara@aeronext.ai", location: "Madrid", sectors: ["aerospace", "ai"], interests: ["funding"] },
+  { name: "Priya Nair", company: "AgriSense", role: "CTO", email: "priya@agrisense.io", location: "Bangalore", sectors: ["agriculture", "iot"], interests: ["network", "knowledge"] },
+  { name: "Luca Moretti", company: "Constructa", role: "Engineer", email: "luca@constructa.it", location: "Milan", sectors: ["construction"], interests: ["team"] },
+  { name: "Emily Chen", company: "FinScope", role: "Investor", email: "emily@finscope.vc", location: "London", sectors: ["finance"], interests: ["where to invest"] },
+  { name: "David Kim", company: "HealthBridge", role: "Founder", email: "david@healthbridge.io", location: "Seoul", sectors: ["healthcare", "pharma"], interests: ["funding", "network"] },
+  { name: "Nina Petrov", company: "EcoLogix", role: "Consultant", email: "nina@ecologix.de", location: "Berlin", sectors: ["sustainability"], interests: ["knowledge"] },
+  { name: "Omar Hassan", company: "BuildHub", role: "Architect", email: "omar@buildhub.me", location: "Dubai", sectors: ["construction"], interests: ["network"] },
+  { name: "Isabella Rossi", company: "AgriCo", role: "Ops Lead", email: "isabella@agrico.it", location: "Rome", sectors: ["agriculture"], interests: ["team"] },
+  { name: "Tom Williams", company: "MedNova", role: "Scientist", email: "tom@mednova.uk", location: "Oxford", sectors: ["pharma", "biotech"], interests: ["knowledge", "team"] },
+  { name: "Chen Wei", company: "SkyLink", role: "Systems Eng", email: "chen@skylink.cn", location: "Shanghai", sectors: ["aerospace"], interests: ["network"] },
+  { name: "Ana Silva", company: "GreenWave", role: "Analyst", email: "ana@greenwave.pt", location: "Lisbon", sectors: ["sustainability", "energy"], interests: ["where to invest"] },
+  { name: "Michael Brown", company: "FinBridge", role: "Partner", email: "michael@finbridge.vc", location: "New York", sectors: ["finance"], interests: ["where to invest", "network"] },
+  { name: "Yuki Tanaka", company: "BioCore", role: "Researcher", email: "yuki@biocore.jp", location: "Tokyo", sectors: ["biotech"], interests: ["knowledge", "team"] },
+  { name: "Fatima Zahra", company: "AgriRoot", role: "Founder", email: "fatima@agriroot.ma", location: "Casablanca", sectors: ["agriculture"], interests: ["funding", "network"] },
+  { name: "Peter Novak", company: "BuildSmart", role: "Engineer", email: "peter@buildsmart.cz", location: "Prague", sectors: ["construction", "iot"], interests: ["knowledge"] },
+  { name: "Sofia Anders", company: "NordPharm", role: "PM", email: "sofia@nordpharm.se", location: "Stockholm", sectors: ["pharma"], interests: ["network"] },
+  { name: "Rafael Diaz", company: "AeroLab", role: "Founder", email: "rafael@aerolab.mx", location: "Mexico City", sectors: ["aerospace"], interests: ["funding", "team"] },
+];
+
+function pairKey(a: string, b: string) {
+  return a < b ? `${a}|${b}` : `${b}|${a}`;
+}
+
+async function main() {
+  console.log("Seeding database…");
+
+  // Reset (dev only)
+  await prisma.connection.deleteMany({});
+  await prisma.person.deleteMany({});
+
+  // Create people
+  const created = await Promise.all(
+    people.map((p) =>
+      prisma.person.create({
+        data: {
+          name: p.name,
+          company: p.company ?? null,
+          role: p.role ?? null,
+          email: p.email ?? null,
+          location: p.location ?? null,
+          sectors: p.sectors ?? [],
+          interests: p.interests ?? [],
+        },
+        select: { id: true, name: true },
+      })
+    )
+  );
+
+  const ids = created.map((c) => c.id);
+  const idByName = new Map(created.map((c) => [c.name, c.id]));
+
+  // Create a set of sample undirected connections (about 28-32)
+  const targetEdges = Math.min(32, Math.floor((ids.length * (ids.length - 1)) / 6));
+  const used = new Set<string>();
+  const rnd = (n: number) => Math.floor(Math.random() * n);
+
+  const edges: {
+    a: string;
+    b: string;
+    introducedByChain: string[];
+    eventLabels: string[];
+    notes?: string | null;
+  }[] = [];
+
+  let guard = 0;
+  while (edges.length < targetEdges && guard < 5000) {
+    guard++;
+    const i = rnd(ids.length);
+    let j = rnd(ids.length);
+    if (j === i) continue;
+    const a = ids[i];
+    const b = ids[j];
+    const key = pairKey(a, b);
+    if (used.has(key)) continue;
+    used.add(key);
+
+    // 50% add a single introducer different from a and b
+    let introducedByChain: string[] = [];
+    if (Math.random() < 0.5 && ids.length > 2) {
+      let k = rnd(ids.length);
+      let guard2 = 0;
+      while ((k === i || k === j) && guard2 < 100) {
+        k = rnd(ids.length);
+        guard2++;
+      }
+      if (k !== i && k !== j) {
+        introducedByChain = [ids[k]];
+      }
+    }
+
+    const eventLabels = Math.random() < 0.4 ? ["event:demo"] : [];
+    edges.push({ a, b, introducedByChain, eventLabels, notes: null });
+  }
+
+  for (const e of edges) {
+    await prisma.connection.create({
+      data: {
+        personAId: e.a,
+        personBId: e.b,
+        introducedByChain: e.introducedByChain,
+        eventLabels: e.eventLabels,
+        notes: e.notes ?? null,
+      },
+    });
+  }
+
+  console.log(`Inserted ${created.length} people and ${edges.length} connections.`);
+}
+
+main()
+  .then(async () => {
+    await prisma.$disconnect();
+  })
+  .catch(async (e) => {
+    console.error(e);
+    await prisma.$disconnect();
+    process.exit(1);
+  });