// D&D Campaign Manager — Prisma schema
// Postgres. Run `npx prisma migrate dev --name init` after `DATABASE_URL` is set,
// then `npx prisma db seed` using the seed script built from /seed-data/*.json
// (see CLAUDE_BUILD_PROMPT.md, "Database" section).

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

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

// ---------------------------------------------------------------------------
// Enums
// ---------------------------------------------------------------------------

enum CampaignRole {
  DM
  PLAYER
}

enum Species {
  HUMAN
  HALF_ELF
  ELF
  GNOME
  DWARF
  HALFLING
  DRAGONBORN
  TIEFLING
  HALF_ORC
  ORC
}

enum CharacterClass {
  FIGHTER
  BARBARIAN
  ROGUE
  RANGER
  WIZARD
  SORCERER
  CLERIC
  PALADIN
  BARD
  WARLOCK
  DRUID
  MONK
}

enum Ability {
  STR
  DEX
  CON
  INT
  WIS
  CHA
}

enum Skill {
  ACROBATICS
  ANIMAL_HANDLING
  ARCANA
  ATHLETICS
  DECEPTION
  HISTORY
  INSIGHT
  INTIMIDATION
  INVESTIGATION
  MEDICINE
  NATURE
  PERCEPTION
  PERFORMANCE
  PERSUASION
  RELIGION
  SLEIGHT_OF_HAND
  STEALTH
  SURVIVAL
}

enum BuildStage {
  NOT_STARTED
  ROLLING_SPECIES
  ROLLING_CLASS
  ROLLING_MOTIVATION
  ASSIGNING_SCORES
  ASSIGNING_PROFICIENCIES
  CHOOSING_EQUIPMENT
  COMPLETE
}

enum EncounterStatus {
  PLANNING
  ACTIVE
  COMPLETE
}

enum NoteVisibility {
  DM_ONLY
  SHARED
}

// ---------------------------------------------------------------------------
// Identity & campaigns
// ---------------------------------------------------------------------------

model User {
  id           String   @id @default(cuid())
  email        String   @unique
  passwordHash String
  displayName  String
  createdAt    DateTime @default(now())
  updatedAt    DateTime @updatedAt

  memberships       CampaignMember[]
  charactersOwned   Character[]      @relation("PlayerCharacters")
  charactersCreated Character[]      @relation("CreatedBy")
  notesAuthored     Note[]

  @@map("users")
}

model Campaign {
  id                 String   @id @default(cuid())
  name               String
  description        String?
  inviteCode         String   @unique
  startingGold       Int      @default(0)
  startingItemCount  Int      @default(0)
  startingSpellCount Int      @default(0)
  skipMotivationRoll Boolean  @default(false)
  ownerId            String
  createdAt          DateTime @default(now())
  updatedAt          DateTime @updatedAt

  members    CampaignMember[]
  characters Character[]
  weapons    Weapon[]
  spells     Spell[]
  monsters   Monster[]
  encounters Encounter[]
  notes      Note[]

  @@map("campaigns")
}

model CampaignMember {
  id         String       @id @default(cuid())
  campaignId String
  userId     String
  role       CampaignRole @default(PLAYER)
  joinedAt   DateTime     @default(now())

  campaign Campaign @relation(fields: [campaignId], references: [id], onDelete: Cascade)
  user     User     @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@unique([campaignId, userId])
  @@map("campaign_members")
}

// ---------------------------------------------------------------------------
// Characters
// ---------------------------------------------------------------------------

model Character {
  id             String         @id @default(cuid())
  campaignId     String
  userId         String? // owning player; null for a DM-controlled NPC/ally
  createdById    String
  name           String
  species        Species?
  characterClass CharacterClass?
  level          Int            @default(1)
  xp             Int            @default(0)
  motivation     String?

  // Rolled ability scores (before species bonus)
  strScore Int @default(10)
  dexScore Int @default(10)
  conScore Int @default(10)
  intScore Int @default(10)
  wisScore Int @default(10)
  chaScore Int @default(10)

  // Half-Elf's flexible +1/+1 choice; null unless species = HALF_ELF
  halfElfBonusAbility1 Ability?
  halfElfBonusAbility2 Ability?

  currentHp     Int     @default(0)
  tempHp        Int     @default(0)
  armorBonus    Int     @default(0) // flat AC bonus from equipped armor/shield
  speedOverride Int?

  specialAbilities String? // free-text list shown in the quick-stats panel
  gold             Int     @default(0)

  buildStage BuildStage @default(NOT_STARTED)
  buildState Json? // in-progress dice rolls / pending choices while building

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

  campaign  Campaign @relation(fields: [campaignId], references: [id], onDelete: Cascade)
  user      User?    @relation("PlayerCharacters", fields: [userId], references: [id])
  createdBy User     @relation("CreatedBy", fields: [createdById], references: [id])

  skillProficiencies CharacterSkillProficiency[]
  saveProficiencies  CharacterSaveProficiency[]
  inventoryItems     InventoryItem[]
  weapons            CharacterWeapon[]
  spells             CharacterSpell[]
  notes              Note[]
  encounterEntries   EncounterParticipant[]

  @@map("characters")
}

model CharacterSkillProficiency {
  id          String  @id @default(cuid())
  characterId String
  skill       Skill
  proficient  Boolean @default(true)
  expertise   Boolean @default(false) // double proficiency bonus, e.g. Rogue

  character Character @relation(fields: [characterId], references: [id], onDelete: Cascade)

  @@unique([characterId, skill])
  @@map("character_skill_proficiencies")
}

model CharacterSaveProficiency {
  id          String  @id @default(cuid())
  characterId String
  ability     Ability
  proficient  Boolean @default(true)

  character Character @relation(fields: [characterId], references: [id], onDelete: Cascade)

  @@unique([characterId, ability])
  @@map("character_save_proficiencies")
}

// ---------------------------------------------------------------------------
// Weapons & inventory
// ---------------------------------------------------------------------------

model Weapon {
  id           String   @id @default(cuid())
  campaignId   String
  name         String
  damageDice   String // e.g. "1d8"
  damageType   String // e.g. "slashing"
  attackAbility String  // "STR" | "DEX" | "FINESSE" (finesse = better of STR/DEX)
  properties   String[] // e.g. ["finesse", "light", "thrown"]
  rangeNormal  Int?
  rangeLong    Int?
  createdAt    DateTime @default(now())

  campaign Campaign          @relation(fields: [campaignId], references: [id], onDelete: Cascade)
  assigned CharacterWeapon[]

  @@map("weapons")
}

model CharacterWeapon {
  id          String   @id @default(cuid())
  characterId String
  weaponId    String
  quantity    Int      @default(1)
  equipped    Boolean  @default(false)

  character Character @relation(fields: [characterId], references: [id], onDelete: Cascade)
  weapon    Weapon    @relation(fields: [weaponId], references: [id], onDelete: Cascade)

  @@unique([characterId, weaponId])
  @@map("character_weapons")
}

model InventoryItem {
  id          String   @id @default(cuid())
  characterId String
  name        String
  description String?
  quantity    Int      @default(1)
  equipped    Boolean  @default(false)

  character Character @relation(fields: [characterId], references: [id], onDelete: Cascade)

  @@map("inventory_items")
}

// ---------------------------------------------------------------------------
// Spells
// ---------------------------------------------------------------------------

model Spell {
  id          String  @id @default(cuid())
  campaignId  String
  name        String
  level       Int // 0 = cantrip
  school      String?
  castingTime String?
  range       String?
  duration    String?
  description String?

  campaign Campaign         @relation(fields: [campaignId], references: [id], onDelete: Cascade)
  known    CharacterSpell[]

  @@map("spells")
}

model CharacterSpell {
  id          String  @id @default(cuid())
  characterId String
  spellId     String
  prepared    Boolean @default(false)

  character Character @relation(fields: [characterId], references: [id], onDelete: Cascade)
  spell     Spell     @relation(fields: [spellId], references: [id], onDelete: Cascade)

  @@unique([characterId, spellId])
  @@map("character_spells")
}

// ---------------------------------------------------------------------------
// Monsters & encounters
// ---------------------------------------------------------------------------

model Monster {
  id            String  @id @default(cuid())
  campaignId    String
  name          String
  ac            Int
  maxHp         Int
  speed         Int     @default(30)
  strScore      Int     @default(10)
  dexScore      Int     @default(10)
  conScore      Int     @default(10)
  intScore      Int     @default(10)
  wisScore      Int     @default(10)
  chaScore      Int     @default(10)
  attackBonus   Int     @default(0)
  damageDice    String?
  challengeRating String?
  specialTrait  String?
  notes         String?

  campaign             Campaign               @relation(fields: [campaignId], references: [id], onDelete: Cascade)
  encounterAppearances EncounterParticipant[]

  @@map("monsters")
}

model Encounter {
  id           String          @id @default(cuid())
  campaignId   String
  name         String
  status       EncounterStatus @default(PLANNING)
  currentRound Int             @default(1)
  createdAt    DateTime        @default(now())
  updatedAt    DateTime        @updatedAt

  campaign     Campaign               @relation(fields: [campaignId], references: [id], onDelete: Cascade)
  participants EncounterParticipant[]

  @@map("encounters")
}

// A row per combatant in an encounter — either a character or a monster.
// currentHp/maxHp are snapshotted here (not just read off Character/Monster)
// so damage tracking during a fight doesn't need to mutate the character's or
// monster's permanent record until the DM chooses to apply it back.
model EncounterParticipant {
  id          String   @id @default(cuid())
  encounterId String
  characterId String?
  monsterId   String?
  displayName String // denormalized so a monster can be renamed per-instance, e.g. "Goblin #2"
  initiative  Int      @default(0)
  currentHp   Int
  maxHp       Int
  conditions  String[] @default([]) // e.g. ["poisoned", "prone"]
  isMonster   Boolean

  encounter Encounter  @relation(fields: [encounterId], references: [id], onDelete: Cascade)
  character Character? @relation(fields: [characterId], references: [id], onDelete: SetNull)
  monster   Monster?   @relation(fields: [monsterId], references: [id], onDelete: SetNull)

  @@map("encounter_participants")
}

// ---------------------------------------------------------------------------
// Notes
// ---------------------------------------------------------------------------

model Note {
  id          String         @id @default(cuid())
  campaignId  String?
  characterId String?
  authorId    String
  body        String
  visibility  NoteVisibility @default(SHARED)
  createdAt   DateTime       @default(now())

  campaign  Campaign?  @relation(fields: [campaignId], references: [id], onDelete: Cascade)
  character Character? @relation(fields: [characterId], references: [id], onDelete: Cascade)
  author    User       @relation(fields: [authorId], references: [id])

  @@map("notes")
}