// This is your Prisma schema file,
// learn more about it in the docs: https://pris.ly/d/prisma-schema

// Looking for ways to speed up your queries, or scale easily with your serverless or edge functions?
// Try Prisma Accelerate: https://pris.ly/cli/accelerate-init

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

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

// 用户表
model User {
  id            String    @id @default(cuid())
  email         String    @unique
  name          String?
  password      String
  avatar        String?
  isAdmin       Boolean   @default(false)  // 是否为管理员
  isActive      Boolean   @default(true)   // 是否启用
  hasSeenHelp   Boolean   @default(false)  // 是否已查看使用帮助
  createdAt     DateTime  @default(now())
  updatedAt     DateTime  @updatedAt
  
  // 关系
  ownedTrees    FamilyTree[]  @relation("TreeOwner")
  collaborations TreeCollaborator[]
  activityLogs  ActivityLog[]
  loginLogs     LoginLog[]
}

// 家族树表
model FamilyTree {
  id            String    @id @default(cuid())
  name          String
  description   String?
  rootMemberId  String?
  ownerId       String
  createdAt     DateTime  @default(now())
  updatedAt     DateTime  @updatedAt
  
  // 关系
  owner         User      @relation("TreeOwner", fields: [ownerId], references: [id], onDelete: Cascade)
  members       FamilyMember[]
  collaborators TreeCollaborator[]
  activityLogs  ActivityLog[]
  
  @@index([ownerId])
}

// 协作者表
model TreeCollaborator {
  id        String   @id @default(cuid())
  treeId    String
  userId    String
  role      Role     @default(VIEWER)
  invitedBy String
  invitedAt DateTime @default(now())
  
  // 关系
  tree      FamilyTree @relation(fields: [treeId], references: [id], onDelete: Cascade)
  user      User       @relation(fields: [userId], references: [id], onDelete: Cascade)
  
  @@unique([treeId, userId])
  @@index([treeId])
  @@index([userId])
}

enum Role {
  OWNER
  EDITOR
  VIEWER
}

// 家族成员表
model FamilyMember {
  id                String    @id @default(cuid())
  treeId            String
  
  // 基本信息
  surname           String
  givenName         String
  fullName          String
  gender            Gender
  generation        Int
  generationName    String?
  courtesyName      String?
  artName           String?
  posthumousName    String?
  rank              Int?
  isFounder         Boolean   @default(false)
  
  // 日期
  birthDate         String?
  deathDate         String?
  isLunarDate       Boolean   @default(false)
  
  // 地点
  ancestralHome     String?
  birthPlace        String?
  deathPlace        String?
  burialPlace       String?
  
  // 联系方式
  phone             String?
  telephone         String?
  email             String?
  address           String?
  occupation        String?
  
  // 关系
  fatherId          String?
  motherId          String?
  spouseIds         String[]  @default([])
  childrenIds       String[]  @default([])
  
  // 配偶父母信息
  spouseFatherName  String?
  spouseMotherName  String?
  
  // 内容
  bio               String?
  tags              String[]  @default([])
  avatarUrl         String?
  avatarImageId     String?
  photoIds          String[]  @default([]) // 已弃用，用于兼容
  photos            Json?     @default("[]") // 新格式：[{ url, caption, uploadedAt }]
  stories           Json?     @default("[]") // 家族故事
  
  // 元数据
  createdAt         DateTime  @default(now())
  updatedAt         DateTime  @updatedAt
  
  // 关系
  tree              FamilyTree @relation(fields: [treeId], references: [id], onDelete: Cascade)
  
  // 索引优化
  @@index([treeId])
  @@index([fatherId])
  @@index([motherId])
  @@index([treeId, generation])  // 复合索引：按树和世代查询
  @@index([treeId, createdAt])   // 复合索引：按树和创建时间查询
  @@index([fullName])            // 姓名搜索索引
  @@index([surname])             // 姓氏筛选索引
}

enum Gender {
  MALE
  FEMALE
}

// 操作日志表
model ActivityLog {
  id          String   @id @default(cuid())
  treeId      String
  userId      String
  action      Action
  entityType  EntityType
  entityId    String?
  entityName  String?
  changes     Json?
  timestamp   DateTime @default(now())
  
  // 关系
  tree        FamilyTree @relation(fields: [treeId], references: [id], onDelete: Cascade)
  user        User       @relation(fields: [userId], references: [id], onDelete: Cascade)
  
  @@index([treeId])
  @@index([userId])
  @@index([timestamp])
}

enum Action {
  CREATE
  UPDATE
  DELETE
  IMPORT
  EXPORT
  ERROR
}

enum EntityType {
  MEMBER
  PHOTO
  STORY
  SETTINGS
  TREE
}

// 成员历史版本表
model MemberHistory {
  id          String   @id @default(cuid())
  memberId    String
  treeId      String
  version     Int      // 版本号
  
  // 保存成员的完整快照
  snapshot    Json     // 成员的所有字段
  
  // 变更信息
  changedBy   String   // 修改者ID
  changedAt   DateTime @default(now())
  changeType  Action   // CREATE, UPDATE, DELETE
  changes     Json?    // 具体变更的字段 { field: { old: ..., new: ... } }
  
  @@index([memberId])
  @@index([treeId])
  @@index([changedAt])
  @@unique([memberId, version])
}

// 登录日志表
model LoginLog {
  id        String   @id @default(cuid())
  userId    String
  email     String
  userName  String?
  ip        String?
  userAgent String?
  success   Boolean  @default(true)
  message   String?  // 失败原因
  createdAt DateTime @default(now())
  
  // 关系
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  
  @@index([userId])
  @@index([createdAt])
}