// This is your Prisma schema file,
// learn more about it in the docs: https://pris.ly/d/prisma-schema

generator client {
  provider = "prisma-client-js"
}

datasource db {
  provider = "mysql"
  url      = env("DATABASE_URL")
}

// https://github.com/pantharshit00/prisma-docs-generator
generator docs {
  provider = "node node_modules/prisma-docs-generator"
  output   = "../docs"
}

// https://github.com/notiz-dev/prisma-dbml-generator
// Viewer: https://dbdiagram.io/d
generator dbml {
  provider    = "prisma-dbml-generator"
  output      = "../docs"
  outputName  = "schema.dbml"
  projectName = "AssetFlow"
}

enum Status {
  normal
  borrowed
  stolen
  lost
}

model Item {
  id      Int     @id @unique @default(autoincrement())
  SKU     String? @unique
  amount  Int     @default(1)
  name    String
  Comment String?
  status  Status  @default(normal) /// TODO: Would it be better to create a separate model for this as well instead of providing several static statuses to choose from(enum)?

  manufacturer String /// TODO: Do we need this as a mandatory field? Probably we can add another model for manufacturer.

  category   Category @relation(fields: [categoryId], references: [id])
  categoryId Int

  items    Item[] @relation("items") /// Item beinhaltet..
  baseItem Item[] @relation("items") /// Item zugehörig zu.

  storageLocation   StorageLocation? @relation(fields: [storageLocationId], references: [id])
  storageLocationId Int?

  createdAt  DateTime @default(now())
  updatedAt  DateTime @updatedAt
  importedBy String?
}

model StorageLocation {
  id            Int          @id @default(autoincrement())
  name          String       @unique /// This is our LocationID for external use prefixed with: '%StorageUnit%_'
  storageUnit   StorageUnit? @relation(fields: [storageUnitId], references: [id])
  storageUnitId Int?
  Item          Item[]
}

/// A StorageUnit is the base and can hold multiple StorageLocations.
model StorageUnit {
  id              Int               @id @default(autoincrement())
  name            String
  street          String
  houseNumber     String
  zipCode         String
  city            String
  country         String
  StorageLocation StorageLocation[]
}

model Category {
  id          Int     @id @default(autoincrement())
  name        String  @unique
  description String?
  Item        Item[]
}

/// TODO: Add relationship to StorageUnit, Item and if necessary to StorageLocation.
model Owner {
  id          Int       @id @default(autoincrement())
  type        OwnerType @default(person)
  name        String
  lastName    String?
  street      String
  houseNumber String
  zipCode     String
  city        String
  country     String
}

enum OwnerType {
  person
  customer
  company
}