friends system

prisma/migrations/20251207155924_add_friends_system/migration.sql

@@ -0,0 +1,42 @@
+-- CreateEnum
+CREATE TYPE "FriendRequestStatus" AS ENUM ('PENDING', 'ACCEPTED', 'DENIED');
+
+-- CreateTable
+CREATE TABLE "friend_requests" (
+    "id" TEXT NOT NULL,
+    "sender_id" TEXT NOT NULL,
+    "receiver_id" TEXT NOT NULL,
+    "status" "FriendRequestStatus" NOT NULL DEFAULT 'PENDING',
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updated_at" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "friend_requests_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "friendships" (
+    "id" TEXT NOT NULL,
+    "user_id" TEXT NOT NULL,
+    "friend_id" TEXT NOT NULL,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "friendships_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "friend_requests_sender_id_receiver_id_key" ON "friend_requests"("sender_id", "receiver_id");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "friendships_user_id_friend_id_key" ON "friendships"("user_id", "friend_id");
+
+-- AddForeignKey
+ALTER TABLE "friend_requests" ADD CONSTRAINT "friend_requests_sender_id_fkey" FOREIGN KEY ("sender_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "friend_requests" ADD CONSTRAINT "friend_requests_receiver_id_fkey" FOREIGN KEY ("receiver_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "friendships" ADD CONSTRAINT "friendships_user_id_fkey" FOREIGN KEY ("user_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "friendships" ADD CONSTRAINT "friendships_friend_id_fkey" FOREIGN KEY ("friend_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;

prisma/schema.prisma

@@ -3,7 +3,6 @@
 
 generator client {
   provider = "prisma-client-js"
-  output   = "../node_modules/.prisma/client"
 }
 
 datasource db {
@@ -43,5 +42,44 @@ model User {
   /// Timestamp of last login
   lastLoginAt DateTime? @map("last_login_at")
 
+  sentFriendRequests     FriendRequest[] @relation("SentFriendRequests")
+  receivedFriendRequests FriendRequest[] @relation("ReceivedFriendRequests")
+  userFriendships        Friendship[]    @relation("UserFriendships")
+  friendFriendships      Friendship[]    @relation("FriendFriendships")
+
   @@map("users")
 }
+
+model FriendRequest {
+  id         String              @id @default(uuid())
+  senderId   String              @map("sender_id")
+  receiverId String              @map("receiver_id")
+  status     FriendRequestStatus @default(PENDING)
+  createdAt  DateTime            @default(now()) @map("created_at")
+  updatedAt  DateTime            @updatedAt @map("updated_at")
+
+  sender   User @relation("SentFriendRequests", fields: [senderId], references: [id], onDelete: Cascade)
+  receiver User @relation("ReceivedFriendRequests", fields: [receiverId], references: [id], onDelete: Cascade)
+
+  @@unique([senderId, receiverId])
+  @@map("friend_requests")
+}
+
+model Friendship {
+  id        String   @id @default(uuid())
+  userId    String   @map("user_id")
+  friendId  String   @map("friend_id")
+  createdAt DateTime @default(now()) @map("created_at")
+
+  user   User @relation("UserFriendships", fields: [userId], references: [id], onDelete: Cascade)
+  friend User @relation("FriendFriendships", fields: [friendId], references: [id], onDelete: Cascade)
+
+  @@unique([userId, friendId])
+  @@map("friendships")
+}
+
+enum FriendRequestStatus {
+  PENDING
+  ACCEPTED
+  DENIED
+}