// Datasource configuration
datasource db {
    provider = "sqlserver"
    url      = env("DATABASE_URL")
}

// Enums for Request
enum RequestType {
    NEW_USER
    CHANGE_LEVEL
    DELETE
}

enum RequestOutcome {
    FULFILLED
    REJECTED
    IN_PROGRESS
    CANCELLED
    OTHER
}

// User model
model User {
    id                 Int        @id @default(autoincrement())
    createdAt          DateTime   @default(now())
    name               String
    email              String     @unique
    passwordHash       String
    role               String     @default("GUEST") @db.VarChar(10) // ADMIN, SCIENTIST, GUEST
    scientist          Scientist? @relation
    purchasedArtefacts Artefact[] @relation("UserPurchasedArtefacts")
    requests           Request[]  @relation("UserRequests")
}

// Request model
model Request {
    id               Int            @id @default(autoincrement())
    createdAt        DateTime       @default(now())
    requestType      RequestType
    requestingUser   User           @relation("UserRequests", fields: [requestingUserId], references: [id])
    requestingUserId Int
    outcome          RequestOutcome @default(IN_PROGRESS)
}

// Scientist model
model Scientist {
    id            Int           @id @default(autoincrement())
    createdAt     DateTime      @default(now())
    name          String
    level         String        @db.VarChar(10) // JUNIOR, SENIOR
    user          User          @relation(fields: [userId], references: [id])
    userId        Int           @unique
    superior      Scientist?    @relation("SuperiorRelation", fields: [superiorId], references: [id], onDelete: NoAction, onUpdate: NoAction)
    superiorId    Int?
    subordinates  Scientist[]   @relation("SuperiorRelation")
    earthquakes   Earthquake[]  @relation("ScientistEarthquakeCreator")
    observatories Observatory[] @relation("ScientistObservatoryCreator")
    artefacts     Artefact[]    @relation("ScientistArtefactCreator")
}

// Earthquake model
model Earthquake {
    id            Int           @id @default(autoincrement())
    createdAt     DateTime      @default(now())
    updatedAt     DateTime      @updatedAt
    date          DateTime
    location      String
    latitude      String
    longitude     String
    magnitude     Float
    depth         Float
    creatorId     Int?
    creator       Scientist?    @relation("ScientistEarthquakeCreator", fields: [creatorId], references: [id], onDelete: NoAction, onUpdate: NoAction)
    artefacts     Artefact[]
    observatories Observatory[] @relation("EarthquakeObservatory")
}

// Observatory model
model Observatory {
    id                  Int          @id @default(autoincrement())
    createdAt           DateTime     @default(now())
    updatedAt           DateTime     @updatedAt
    name                String
    location            String
    longitude           String
    latitude            String
    dateEstablished     Int?
    functional          Boolean
    seismicSensorOnline Boolean      @default(true)
    creatorId           Int?
    creator             Scientist?   @relation("ScientistObservatoryCreator", fields: [creatorId], references: [id], onDelete: NoAction, onUpdate: NoAction)
    earthquakes         Earthquake[] @relation("EarthquakeObservatory")
}

// Artefact model
model Artefact {
    id              Int        @id @default(autoincrement())
    createdAt       DateTime   @default(now())
    updatedAt       DateTime   @updatedAt
    type            String     @db.VarChar(50) // Lava, Tephra, Ash, Soil
    warehouseArea   String // Examples: "ZoneA-Shelf1", "ZoneB-Rack2", "ZoneC-Bin3"
    description     String
    earthquakeId    Int
    earthquake      Earthquake @relation(fields: [earthquakeId], references: [id])
    creatorId       Int?
    creator         Scientist? @relation("ScientistArtefactCreator", fields: [creatorId], references: [id], onDelete: NoAction, onUpdate: NoAction)
    required        Boolean    @default(true)
    dateAddedToShop DateTime?
    shopPrice       Float? // In Euros
    purchased       Boolean    @default(false)
    purchasedById   Int?
    purchasedBy     User?      @relation("UserPurchasedArtefacts", fields: [purchasedById], references: [id], onDelete: NoAction, onUpdate: NoAction)
    pickedUp        Boolean    @default(false)
}

model Pallet {
    id            Int      @id @default(autoincrement())
    createdAt     DateTime @default(now())
    updatedAt     DateTime @updatedAt
    warehouseArea String // Examples: "ZoneA-Shelf1", "ZoneB-Rack2", "ZoneC-Bin3"
    palletNote    String
}