Add initial Prisma schema

Set up Prisma models for Crypto, CryptoHistory, Offer, PromoCode, Role, Trade, User, and UserHasCrypto. This includes defining fields, relationships, and default values for each model, and configuring PostgreSQL as the database provider.

prisma/schema.prisma

@@ -0,0 +1,105 @@
+datasource db {
+  provider = "postgresql"
+  url      = env("DATABASE_URL")
+}
+
+generator client {
+  provider = "prisma-client-js"
+}
+
+model Crypto {
+  id            String          @id @default(uuid())
+  name          String          @unique
+  value         Float
+  image         String
+  quantity      Float           @default(1000)
+  created_at    DateTime        @default(now())
+  updated_at    DateTime        @default(now()) @updatedAt
+  UserHasCrypto UserHasCrypto[]
+  Trade         Trade[]
+  Offer         Offer[]
+  CryptoHistory CryptoHistory[]
+}
+
+model CryptoHistory {
+  id         String   @id @default(uuid())
+  id_crypto  String
+  value      Float
+  created_at DateTime @default(now())
+  updated_at DateTime @default(now()) @updatedAt
+  Crypto     Crypto   @relation(fields: [id_crypto], references: [id])
+}
+
+model Offer {
+  id         String   @id @default(uuid())
+  id_crypto  String
+  id_user    String
+  amount     Float
+  created_at DateTime @default(now())
+  updated_at DateTime @default(now()) @updatedAt
+
+  Crypto Crypto @relation(fields: [id_crypto], references: [id])
+  User   User   @relation(fields: [id_user], references: [id])
+}
+
+model PromoCode {
+  id         String   @id @default(uuid())
+  name       String
+  value      Int
+  created_at DateTime @default(now())
+  updated_at DateTime @default(now()) @updatedAt
+}
+
+model Role {
+  id         String   @id @default(uuid())
+  name       String
+  created_at DateTime @default(now())
+  updated_at DateTime @default(now()) @updatedAt
+
+  User User[]
+}
+
+model Trade {
+  id            String   @id @default(uuid())
+  id_giver      String
+  id_receiver   String
+  id_crypto     String
+  amount_traded Float
+  created_at    DateTime @default(now())
+  updated_at    DateTime @default(now()) @updatedAt
+
+  Giver    User   @relation("Giver", fields: [id_giver], references: [id])
+  Receiver User   @relation("Receiver", fields: [id_receiver], references: [id])
+  Crypto   Crypto @relation(fields: [id_crypto], references: [id])
+}
+
+model User {
+  id               String   @id @default(uuid())
+  firstName        String
+  lastName         String
+  pseudo           String
+  hash             String
+  email            String   @unique
+  roleId           String
+  isActive         Boolean
+  dollarAvailables Float
+  created_at       DateTime @default(now())
+  updated_at       DateTime @default(now()) @updatedAt
+
+  Role          Role            @relation(fields: [roleId], references: [id])
+  UserHasCrypto UserHasCrypto[]
+  TradeGiven    Trade[]         @relation("Giver")
+  TradeReceived Trade[]         @relation("Receiver")
+  Offer         Offer[]
+}
+
+model UserHasCrypto {
+  id         String   @id @default(uuid())
+  id_user    String
+  id_crypto  String
+  amount     Int
+  createdAt  DateTime @default(now())
+  updated_at DateTime @default(now()) @updatedAt
+  User       User     @relation(fields: [id_user], references: [id])
+  Crypto     Crypto   @relation(fields: [id_crypto], references: [id])
+}