// Flimmer — Datenmodell
//
// Aufbau in vier Schichten:
//   1. Konten & Zugang        (User, Session, ApiKey, OidcAccount, AppSetting)
//   2. Katalog                (Title, Season, Episode, WatchProvider …)
//      — geteilt zwischen allen Nutzern, dedupliziert über die TMDB-ID
//   3. Persönliches Tracking  (LibraryEntry, Watch, Tag …)
//   4. Universen              (Universe, UniverseItem, UniverseOrder …)

generator client {
  provider = "prisma-client"
  output   = "../src/generated/prisma"
  runtime  = "nodejs"
}

datasource db {
  provider = "postgresql"
}

// ---------------------------------------------------------------------------
// 1. Konten & Zugang
// ---------------------------------------------------------------------------

enum Role {
  ADMIN
  USER
}

model User {
  id           String  @id @default(cuid())
  email        String  @unique
  name         String
  passwordHash String?
  role         Role    @default(USER)
  isActive     Boolean @default(true)

  /// Region für die Streaming-Verfügbarkeit (ISO-3166-1, z. B. "DE")
  region String @default("DE")
  locale String @default("de")

  /// Öffentliche Profilseite unter /u/<profileSlug>
  publicProfile Boolean @default(false)
  profileSlug   String? @unique

  // Benachrichtigungswünsche
  notifyNewEpisode   Boolean @default(true)
  notifyRelease      Boolean @default(true)
  notifyAvailability Boolean @default(false)

  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  sessions      Session[]
  apiKeys       ApiKey[]
  oidcAccounts  OidcAccount[]
  entries       LibraryEntry[]
  watches       Watch[]
  tags          Tag[]
  universes     Universe[]            @relation("UniverseOwner")
  memberships   UniverseMember[]
  channels      NotificationChannel[]
  notifications NotificationLog[]

  @@index([createdAt])
}

model Session {
  id String @id @default(cuid())

  /// SHA-256 des Cookie-Tokens — das Klartext-Token verlässt den Server nie erneut
  tokenHash String   @unique
  userId    String
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  expiresAt DateTime
  userAgent String?
  ip        String?
  createdAt DateTime @default(now())
  lastSeen  DateTime @default(now())

  @@index([userId])
  @@index([expiresAt])
}

model ApiKey {
  id      String @id @default(cuid())
  userId  String
  user    User   @relation(fields: [userId], references: [id], onDelete: Cascade)
  name    String
  /// Sichtbares Präfix zur Wiedererkennung, z. B. "flm_a1b2c3d4"
  prefix  String @unique
  keyHash String @unique

  lastUsedAt DateTime?
  revokedAt  DateTime?
  createdAt  DateTime  @default(now())

  @@index([userId])
}

model OidcAccount {
  id       String @id @default(cuid())
  userId   String
  user     User   @relation(fields: [userId], references: [id], onDelete: Cascade)
  issuer   String
  subject  String
  createdAt DateTime @default(now())

  @@unique([issuer, subject])
  @@index([userId])
}

/// Instanzweite Einstellungen (Registrierung offen/zu, Instanzname …)
model AppSetting {
  key       String   @id
  value     Json
  updatedAt DateTime @updatedAt
}

// ---------------------------------------------------------------------------
// 2. Katalog
// ---------------------------------------------------------------------------

enum TitleType {
  SERIES
  MOVIE
}

model Title {
  id   String    @id @default(cuid())
  type TitleType

  /// TMDB-ID; null bei manuell angelegten Titeln ohne TMDB-Treffer
  tmdbId Int?
  imdbId String?

  title         String
  originalTitle String?
  overview      String?
  tagline       String?
  posterPath    String?
  backdropPath  String?

  /// Erstausstrahlung (Serie) bzw. Kinostart (Film)
  releaseDate DateTime?
  lastAirDate DateTime?

  /// Laufzeit in Minuten: bei Filmen die Filmlänge, bei Serien die
  /// durchschnittliche Episodenlänge (Rückfallwert für Episoden ohne Angabe)
  runtime Int?

  /// TMDB-Status: "Returning Series", "Ended", "Released", "Planned" …
  status       String?
  inProduction Boolean @default(false)

  genres       String[]
  originalLang String?
  homepage     String?
  voteAverage  Float?

  seasonCount  Int @default(0)
  episodeCount Int @default(0)

  /// Offizielle TMDB-Collection (z. B. „Spider-Man Collection")
  tmdbCollectionId   Int?
  tmdbCollectionName String?

  /// Zeitpunkt des letzten TMDB-Abgleichs
  syncedAt  DateTime?
  createdAt DateTime  @default(now())
  updatedAt DateTime  @updatedAt

  seasons       Season[]
  episodes      Episode[]
  entries       LibraryEntry[]
  watches       Watch[]
  providers     TitleProvider[]
  universeItems UniverseItem[]

  @@unique([type, tmdbId])
  @@index([type])
  @@index([releaseDate])
  @@index([title])
  @@index([tmdbCollectionId])
}

model Season {
  id      String @id @default(cuid())
  titleId String
  title   Title  @relation(fields: [titleId], references: [id], onDelete: Cascade)

  tmdbId       Int?
  seasonNumber Int
  name         String
  overview     String?
  posterPath   String?
  airDate      DateTime?
  episodeCount Int       @default(0)

  episodes Episode[]

  @@unique([titleId, seasonNumber])
  @@index([titleId])
}

model Episode {
  id       String  @id @default(cuid())
  titleId  String
  title    Title   @relation(fields: [titleId], references: [id], onDelete: Cascade)
  seasonId String
  season   Season  @relation(fields: [seasonId], references: [id], onDelete: Cascade)

  tmdbId        Int?
  seasonNumber  Int
  episodeNumber Int
  name          String
  overview      String?
  stillPath     String?
  airDate       DateTime?
  runtime       Int?

  watches Watch[]

  @@unique([titleId, seasonNumber, episodeNumber])
  @@index([titleId])
  @@index([seasonId])
  @@index([airDate])
}

/// Streamingdienst laut TMDB/JustWatch
model WatchProvider {
  id       String @id @default(cuid())
  tmdbId   Int    @unique
  name     String
  logoPath String?
  /// Akzentfarbe für Badges im UI (Hex); fällt sonst auf einen Standardton zurück
  color    String?

  titles TitleProvider[]
}

enum ProviderKind {
  FLATRATE
  RENT
  BUY
  ADS
  FREE
}

model TitleProvider {
  id         String        @id @default(cuid())
  titleId    String
  title      Title         @relation(fields: [titleId], references: [id], onDelete: Cascade)
  providerId String
  provider   WatchProvider @relation(fields: [providerId], references: [id], onDelete: Cascade)
  region     String
  kind       ProviderKind
  /// Für die Benachrichtigung „ist jetzt verfügbar"
  firstSeenAt DateTime @default(now())

  @@unique([titleId, providerId, region, kind])
  @@index([titleId, region])
}

// ---------------------------------------------------------------------------
// 3. Persönliches Tracking
// ---------------------------------------------------------------------------

enum EntryStatus {
  WATCHING
  PAUSED
  COMPLETED
  DROPPED
  WATCHLIST
}

model LibraryEntry {
  id      String @id @default(cuid())
  userId  String
  user    User   @relation(fields: [userId], references: [id], onDelete: Cascade)
  titleId String
  title   Title  @relation(fields: [titleId], references: [id], onDelete: Cascade)

  status EntryStatus @default(WATCHLIST)

  /// Eigene Bewertung 1–10
  rating Int?
  notes  String?

  /// „Wo schaue ich das" — Vorschlag aus der Verfügbarkeit, überschreibbar
  whereToWatch String?

  favorite Boolean @default(false)

  /// Aktueller Durchlauf: 0 = Erstsichtung, 1 = erster Rewatch …
  currentRun Int @default(0)

  startedAt  DateTime?
  finishedAt DateTime?

  /// Papierkorb: 30 Tage aufbewahren statt hart löschen
  deletedAt DateTime?

  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  tags    TagOnEntry[]
  watches Watch[]

  @@unique([userId, titleId])
  @@index([userId, status])
  @@index([userId, updatedAt])
  @@index([deletedAt])
}

model Tag {
  id     String @id @default(cuid())
  userId String
  user   User   @relation(fields: [userId], references: [id], onDelete: Cascade)
  name   String
  color  String?

  entries TagOnEntry[]

  @@unique([userId, name])
}

model TagOnEntry {
  tagId   String
  tag     Tag          @relation(fields: [tagId], references: [id], onDelete: Cascade)
  entryId String
  entry   LibraryEntry @relation(fields: [entryId], references: [id], onDelete: Cascade)

  @@id([tagId, entryId])
  @@index([entryId])
}

/// Ein Sichtungsvorgang: entweder eine Episode oder ein Film.
/// Rewatches werden über `run` gezählt (0 = Erstsichtung).
model Watch {
  id      String  @id @default(cuid())
  userId  String
  user    User    @relation(fields: [userId], references: [id], onDelete: Cascade)
  entryId String?
  entry   LibraryEntry? @relation(fields: [entryId], references: [id], onDelete: SetNull)

  titleId   String
  title     Title    @relation(fields: [titleId], references: [id], onDelete: Cascade)
  episodeId String?
  episode   Episode? @relation(fields: [episodeId], references: [id], onDelete: Cascade)

  run       Int      @default(0)
  watchedAt DateTime @default(now())

  /// Tatsächlich angerechnete Minuten — friert die Laufzeit zum Zeitpunkt der
  /// Sichtung ein, damit spätere TMDB-Korrekturen die Statistik nicht verbiegen.
  minutes Int @default(0)

  createdAt DateTime @default(now())

  @@unique([userId, episodeId, run])
  @@index([userId, watchedAt])
  @@index([userId, titleId])
  @@index([entryId])
}

// ---------------------------------------------------------------------------
// 4. Universen
// ---------------------------------------------------------------------------

model Universe {
  id          String  @id @default(cuid())
  ownerId     String
  owner       User    @relation("UniverseOwner", fields: [ownerId], references: [id], onDelete: Cascade)
  name        String
  slug        String
  description String?
  coverPath   String?

  deletedAt DateTime?
  createdAt DateTime  @default(now())
  updatedAt DateTime  @updatedAt

  items   UniverseItem[]
  orders  UniverseOrder[]
  members UniverseMember[]

  @@unique([ownerId, slug])
  @@index([ownerId])
}

enum SharePermission {
  READ
  WRITE
}

model UniverseMember {
  id         String          @id @default(cuid())
  universeId String
  universe   Universe        @relation(fields: [universeId], references: [id], onDelete: Cascade)
  userId     String
  user       User            @relation(fields: [userId], references: [id], onDelete: Cascade)
  permission SharePermission @default(READ)
  createdAt  DateTime        @default(now())

  @@unique([universeId, userId])
  @@index([userId])
}

model UniverseItem {
  id         String   @id @default(cuid())
  universeId String
  universe   Universe @relation(fields: [universeId], references: [id], onDelete: Cascade)
  titleId    String
  title      Title    @relation(fields: [titleId], references: [id], onDelete: Cascade)
  note       String?
  createdAt  DateTime @default(now())

  positions UniverseOrderItem[]

  @@unique([universeId, titleId])
  @@index([universeId])
}

enum OrderKind {
  /// Automatisch aus den Erscheinungsdaten berechnet
  RELEASE
  /// Frei sortierbar (Story-Chronologie, Einsteiger-Reihenfolge …)
  CUSTOM
}

model UniverseOrder {
  id         String    @id @default(cuid())
  universeId String
  universe   Universe  @relation(fields: [universeId], references: [id], onDelete: Cascade)
  name       String
  kind       OrderKind @default(CUSTOM)
  isDefault  Boolean   @default(false)
  createdAt  DateTime  @default(now())

  items UniverseOrderItem[]

  @@index([universeId])
}

model UniverseOrderItem {
  id       String        @id @default(cuid())
  orderId  String
  order    UniverseOrder @relation(fields: [orderId], references: [id], onDelete: Cascade)
  itemId   String
  item     UniverseItem  @relation(fields: [itemId], references: [id], onDelete: Cascade)
  position Int

  @@unique([orderId, itemId])
  @@index([orderId, position])
}

// ---------------------------------------------------------------------------
// Benachrichtigungen & Hintergrundläufe
// ---------------------------------------------------------------------------

enum ChannelKind {
  EMAIL
  NTFY
  GOTIFY
  WEBHOOK
}

model NotificationChannel {
  id      String      @id @default(cuid())
  userId  String
  user    User        @relation(fields: [userId], references: [id], onDelete: Cascade)
  kind    ChannelKind
  name    String
  /// Kanalspezifische Einstellungen (URL, Topic, Token …)
  config  Json
  enabled Boolean     @default(true)

  createdAt DateTime @default(now())

  @@index([userId])
}

model NotificationLog {
  id     String @id @default(cuid())
  userId String
  user   User   @relation(fields: [userId], references: [id], onDelete: Cascade)

  /// Verhindert Doppelversand, z. B. "episode:<episodeId>"
  dedupeKey String
  subject   String
  body      String
  sentAt    DateTime @default(now())
  ok        Boolean  @default(true)
  error     String?

  @@unique([userId, dedupeKey])
  @@index([userId, sentAt])
}

model SyncRun {
  id         String    @id @default(cuid())
  kind       String
  startedAt  DateTime  @default(now())
  finishedAt DateTime?
  ok         Boolean   @default(false)
  message    String?
  stats      Json?

  @@index([kind, startedAt])
}