Add simple schema

prisma/migrations/20231001091908_add_simple_schema/migration.sql

@@ -0,0 +1,60 @@
+-- CreateTable
+CREATE TABLE "User" (
+    "id" SERIAL NOT NULL,
+    "username" TEXT NOT NULL,
+    "email" TEXT NOT NULL,
+    "password" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "User_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "Message" (
+    "id" SERIAL NOT NULL,
+    "content" TEXT NOT NULL,
+    "senderId" INTEGER NOT NULL,
+    "chatId" INTEGER NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "Message_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "Chat" (
+    "id" SERIAL NOT NULL,
+    "name" TEXT,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "Chat_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "_ChatToUsers" (
+    "A" INTEGER NOT NULL,
+    "B" INTEGER NOT NULL
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "User_username_key" ON "User"("username");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "User_email_key" ON "User"("email");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "_ChatToUsers_AB_unique" ON "_ChatToUsers"("A", "B");
+
+-- CreateIndex
+CREATE INDEX "_ChatToUsers_B_index" ON "_ChatToUsers"("B");
+
+-- AddForeignKey
+ALTER TABLE "Message" ADD CONSTRAINT "Message_senderId_fkey" FOREIGN KEY ("senderId") REFERENCES "User"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "Message" ADD CONSTRAINT "Message_chatId_fkey" FOREIGN KEY ("chatId") REFERENCES "Chat"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "_ChatToUsers" ADD CONSTRAINT "_ChatToUsers_A_fkey" FOREIGN KEY ("A") REFERENCES "Chat"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "_ChatToUsers" ADD CONSTRAINT "_ChatToUsers_B_fkey" FOREIGN KEY ("B") REFERENCES "User"("id") ON DELETE CASCADE ON UPDATE CASCADE;

prisma/schema.prisma

@@ -8,7 +8,29 @@ datasource db {
 }
 
 model User {
-  id    Int     @id @default(autoincrement())
-  email String  @unique
-  name  String?
+  id        Int       @id @default(autoincrement())
+  username  String    @unique
+  email     String    @unique
+  password  String
+  messages  Message[] @relation("MessageSender")
+  chats     Chat[]    @relation("ChatToUsers")
+  createdAt DateTime  @default(now())
+}
+
+model Message {
+  id        Int      @id @default(autoincrement())
+  content   String
+  senderId  Int
+  sender    User     @relation("MessageSender", fields: [senderId], references: [id])
+  chatId    Int
+  chat      Chat     @relation(fields: [chatId], references: [id])
+  createdAt DateTime @default(now())
+}
+
+model Chat {
+  id        Int       @id @default(autoincrement())
+  name      String?
+  users     User[]    @relation("ChatToUsers")
+  messages  Message[]
+  createdAt DateTime  @default(now())
 }