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

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

/// A Konfi-Castle event; the top-level tenant. One instance manages many KCs.
model Kc {
  id          String   @id @default(cuid())
  name        String
  inviteCode  String   @unique
  isActive    Boolean  @default(true)
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  gemeinden Gemeinde[]
  memberships Membership[]
  wahlen    Wahl[]
  files     File[]
  channels  ChatChannel[]
  guests    GuestAccount[]
}

/// A local congregation/community participating in one Kc.
model Gemeinde {
  id        String   @id @default(cuid())
  name      String
  kcId      String
  createdAt DateTime @default(now())

  kc          Kc            @relation(fields: [kcId], references: [id], onDelete: Cascade)
  memberships Membership[]
  guests      GuestAccount[]

  @@unique([kcId, name])
}

enum Role {
  LEITUNGSTEAM
  GEMEINDE_VERANTWORTLICHER
  GEMEINDE_TEAMER
}

/// Authentik-backed user (team member with elevated rights).
model User {
  id            String   @id @default(cuid())
  authentikSub  String   @unique
  email         String   @unique
  firstName     String
  lastName      String
  createdAt     DateTime @default(now())

  memberships Membership[]
  messages    ChatMessage[]
}

/// Scopes a User's role to a specific Kc (and Gemeinde, if applicable).
/// LEITUNGSTEAM memberships apply to all Kcs implicitly and omit gemeindeId.
model Membership {
  id         String   @id @default(cuid())
  userId     String
  kcId       String
  gemeindeId String?
  role       Role
  createdAt  DateTime @default(now())

  user     User      @relation(fields: [userId], references: [id], onDelete: Cascade)
  kc       Kc        @relation(fields: [kcId], references: [id], onDelete: Cascade)
  gemeinde Gemeinde? @relation(fields: [gemeindeId], references: [id], onDelete: Cascade)

  @@unique([userId, kcId, gemeindeId])
}

/// Local, non-Authentik account for Konfis/guests, scoped to one Kc/event.
model GuestAccount {
  id         String   @id @default(cuid())
  kcId       String
  gemeindeId String?
  firstName  String
  lastName   String
  createdAt  DateTime @default(now())

  kc       Kc        @relation(fields: [kcId], references: [id], onDelete: Cascade)
  gemeinde Gemeinde? @relation(fields: [gemeindeId], references: [id], onDelete: Cascade)
  messages ChatMessage[]
  teilnehmer Teilnehmer[]
}

/// A workshop election, scoped to a Kc; name carries a date key + "Teil".
model Wahl {
  id          String   @id @default(cuid())
  kcId        String
  name        String
  datumsSchluessel String
  teil        String
  isOpen      Boolean  @default(true)
  createdAt   DateTime @default(now())

  kc         Kc          @relation(fields: [kcId], references: [id], onDelete: Cascade)
  workshops  Workshop[]
  teilnehmer Teilnehmer[]
}

model Workshop {
  id        String @id @default(cuid())
  wahlId    String
  name      String
  kapazitaet Int

  wahl       Wahl         @relation(fields: [wahlId], references: [id], onDelete: Cascade)
  zuteilungen Zuteilung[]
}

/// A participant's submitted choices for a Wahl.
model Teilnehmer {
  id            String   @id @default(cuid())
  wahlId        String
  guestAccountId String
  prioritaeten  Json
  createdAt     DateTime @default(now())

  wahl        Wahl         @relation(fields: [wahlId], references: [id], onDelete: Cascade)
  guestAccount GuestAccount @relation(fields: [guestAccountId], references: [id], onDelete: Cascade)
  zuteilung   Zuteilung?

  @@unique([wahlId, guestAccountId])
}

/// Result of the assignment algorithm (or a manual force-assignment) for one Teilnehmer.
model Zuteilung {
  id           String   @id @default(cuid())
  teilnehmerId String   @unique
  workshopId   String
  isForced     Boolean  @default(false)
  createdAt    DateTime @default(now())

  teilnehmer Teilnehmer @relation(fields: [teilnehmerId], references: [id], onDelete: Cascade)
  workshop   Workshop   @relation(fields: [workshopId], references: [id], onDelete: Cascade)
}

enum FileVisibility {
  ALLE
  ALLE_AUSSER_KONFIS
  NUR_LT
}

model File {
  id           String         @id @default(cuid())
  kcId         String
  storageKey   String
  filename     String
  visibility   FileVisibility
  uploadedById String
  createdAt    DateTime       @default(now())

  kc Kc @relation(fields: [kcId], references: [id], onDelete: Cascade)
}

enum ChatChannelType {
  GEMEINDE_GRUPPE
  DIREKT
  LT_UEBERGREIFEND
  BROADCAST
}

model ChatChannel {
  id         String          @id @default(cuid())
  kcId       String
  type       ChatChannelType
  gemeindeId String?
  createdAt  DateTime        @default(now())

  kc       Kc            @relation(fields: [kcId], references: [id], onDelete: Cascade)
  messages ChatMessage[]
}

model ChatMessage {
  id             String   @id @default(cuid())
  channelId      String
  senderUserId   String?
  senderGuestId  String?
  body           String
  createdAt      DateTime @default(now())

  channel     ChatChannel   @relation(fields: [channelId], references: [id], onDelete: Cascade)
  senderUser  User?         @relation(fields: [senderUserId], references: [id])
  senderGuest GuestAccount? @relation(fields: [senderGuestId], references: [id])
}