// Kokorone 資料模型
// R-2 會將 provider 由 sqlite 切換為 postgresql，並為 MemoryRetriever 加上 pgvector 語意檢索。

generator client {
  provider = "prisma-client"
  output   = "../packages/db/generated"
}

datasource db {
  provider = "sqlite"
}

enum CharacterSource {
  ORIGINAL // 原創
  EXISTING_WORK // 既有作品
}

enum CharacterBuildStatus {
  CANDIDATE // 候補
  BUILT // 已建置
}

enum MemorySource {
  INTERACTION // 互動
  OFFLINE_GENERATED // 離線生成
  SOURCE_EXTRACTION // 原作萃取
}

// 情緒標籤類型：對應情緒子系統六種狀態（見 D 群組）
enum EmotionTag {
  CALM // 平靜
  JOY // 愉悅
  SAD // 低落
  ALERT // 警戒
  SHY // 害羞
  GRUMPY // 彆扭
}

enum RelationshipStage {
  STRANGER // 陌生 0-19
  ACQUAINTANCE // 認識 20-39
  FRIEND // 朋友 40-59
  CLOSE_AMBIGUOUS // 摯友-曖昧 60-79
  BONDED // 羈絆 80-100
}

model User {
  id        String   @id @default(cuid())
  name      String
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  relationships   Relationship[]
  relatedMemories EpisodicMemory[]

  @@map("users")
}

model Work {
  id             String   @id @default(cuid())
  title          String
  volumeProgress String? // 卷數進度
  worldview      String? // 世界觀
  progressAnchor String? // 作品進度錨定點（M-9／N 群組使用；描述作品實際描寫過的時期）
  createdAt      DateTime @default(now())
  updatedAt      DateTime @updatedAt

  characters Character[]

  @@map("works")
}

model Character {
  id     String  @id @default(cuid())
  workId String?
  work   Work?   @relation(fields: [workId], references: [id], onDelete: SetNull)

  source      CharacterSource
  buildStatus CharacterBuildStatus @default(CANDIDATE)

  // 角色設定表七欄位
  basicInfo            String // 基本資料：名字、年齡、外型、出身
  backgroundStory      String // 背景故事：成長經歷、重大事件
  personalityArchetype String // 性格原型：傲嬌／冷淡／天然呆／元氣／大小姐／三無
  likesDislikes        String // 喜好／厭惡
  goalsObsessions      String // 目標／執念
  speechStyle          String // 說話方式：口癖、語尾詞、第一/第二人稱
  initialRelationValue String? // 人際初始值：對誰親近、對誰有心結

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

  aliases          CharacterAlias[]
  episodicMemories EpisodicMemory[]
  semanticMemories SemanticMemory[]
  proceduralRules  ProceduralRule[]
  emotionState     EmotionState?
  relationships    Relationship[]

  @@map("characters")
}

model CharacterAlias {
  id             String    @id @default(cuid())
  characterId    String
  character      Character @relation(fields: [characterId], references: [id], onDelete: Cascade)
  formalName     String // 正式名
  nickname       String? // 暱稱
  calledByOthers String? // 他人稱呼（作品中其他角色如何稱呼）
  createdAt      DateTime  @default(now())

  @@map("character_aliases")
}

model EpisodicMemory {
  id               String       @id @default(cuid())
  characterId      String
  character        Character    @relation(fields: [characterId], references: [id], onDelete: Cascade)
  content          String
  occurredAt       DateTime // 發生時間
  emotionTag       EmotionTag
  emotionIntensity Float // 情緒強度
  retrievalCount   Int          @default(0) // 提取次數
  lastRetrievedAt  DateTime?
  source           MemorySource
  weight           Float        @default(1) // 權重（供遺忘／檢索排序使用）
  relatedUserId    String? // 這段記憶與哪位使用者相關（E-5 關係加權檢索用）
  relatedUser      User?        @relation(fields: [relatedUserId], references: [id], onDelete: SetNull)
  createdAt        DateTime     @default(now())

  @@map("episodic_memories")
}

model SemanticMemory {
  id          String    @id @default(cuid())
  characterId String
  character   Character @relation(fields: [characterId], references: [id], onDelete: Cascade)
  fact        String // 去情境化事實
  about       String // 對象（關於誰／什麼）
  createdAt   DateTime  @default(now())

  @@map("semantic_memories")
}

model ProceduralRule {
  id              String    @id @default(cuid())
  characterId     String
  character       Character @relation(fields: [characterId], references: [id], onDelete: Cascade)
  situation       String // 情境
  responsePattern String // 回應模式
  weight          Float     @default(1)
  createdAt       DateTime  @default(now())
  updatedAt       DateTime  @updatedAt

  @@map("procedural_rules")
}

model EmotionState {
  id          String    @id @default(cuid())
  characterId String    @unique
  character   Character @relation(fields: [characterId], references: [id], onDelete: Cascade)

  calm   Float @default(100) // 平靜
  joy    Float @default(0) // 愉悅
  sad    Float @default(0) // 低落
  alert  Float @default(0) // 警戒
  shy    Float @default(0) // 害羞
  grumpy Float @default(0) // 彆扭

  updatedAt DateTime @updatedAt

  @@map("emotion_states")
}

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

  intimacy         Int               @default(0) // 親密度 0~100
  trust            Int               @default(0) // 信任度 0~100
  firstMet         DateTime?
  lastInteraction  DateTime?
  interactionCount Int               @default(0)
  stage            RelationshipStage @default(STRANGER)

  ledgerEntries SentimentLedgerEntry[]

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

  @@unique([characterId, userId])
  @@map("relationships")
}

model SentimentLedgerEntry {
  id             String       @id @default(cuid())
  relationshipId String
  relationship   Relationship @relation(fields: [relationshipId], references: [id], onDelete: Cascade)
  date           DateTime
  event          String
  weight         Float // 允許正負：正向事件為正值，負向事件為負值
  createdAt      DateTime     @default(now())

  @@map("sentiment_ledger_entries")
}