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

generator client {
  provider        = "prisma-client-js"
  previewFeatures = ["postgresqlExtensions"]
}

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

// ================================
// Enums
// ================================

enum ProjectStatus {
  ACTIVE
  ARCHIVED
}

enum LinkType {
  WEBSITE
  GITHUB
  HUGGINGFACE
  PAPER
}

enum TaskStatus {
  PENDING
  IN_PROGRESS
  COMPLETED
  FAILED
}

// ================================
// Models
// ================================

model Project {
  id             String        @id @default(cuid())
  name           String
  nameEn         String?
  slug           String        @unique
  description    String
  descriptionEn  String?
  content        String?       @db.Text
  contentEn      String?       @db.Text
  status         ProjectStatus @default(ACTIVE)
  source         String?
  createdAt      DateTime      @default(now())
  updatedAt      DateTime      @updatedAt

  // Relations
  tags           ProjectTag[]
  links          ExternalLink[]
  discoveryTasks ProjectDiscoveryTask[]

  // Indexes
  @@index([status, createdAt], map: "idx_project_status_createdAt")
  @@index([slug], map: "idx_project_slug")
  @@map("projects")
}

model Tag {
  id        String      @id @default(cuid())
  name      String      @unique
  nameEn    String?
  slug      String      @unique
  createdAt DateTime    @default(now())

  // Relations
  projects  ProjectTag[]

  // Indexes
  @@index([slug], map: "idx_tag_slug")
  @@map("tags")
}

model ExternalLink {
  id        String   @id @default(cuid())
  type      LinkType
  url       String
  title     String?
  projectId String

  // Relations
  project   Project  @relation(fields: [projectId], references: [id], onDelete: Cascade)

  // Indexes
  @@index([projectId], map: "idx_link_projectId")
  @@index([type], map: "idx_link_type")
  @@index([url], map: "idx_link_url")
  @@index([type, url], map: "idx_link_type_url")
  @@unique([projectId, url])
  @@map("external_links")
}

// Project-Tag many-to-many relationship table
model ProjectTag {
  projectId String
  tagId     String

  project   Project @relation(fields: [projectId], references: [id], onDelete: Cascade)
  tag       Tag     @relation(fields: [tagId], references: [id], onDelete: Cascade)

  @@id([projectId, tagId])
  @@index([tagId])
  @@map("project_tags")
}

// Project Discovery Task model
model ProjectDiscoveryTask {
  id                  String     @id @default(cuid())
  status              TaskStatus @default(PENDING)

  // 原始数据（仅URL）
  sourceUrl           String
  sourceType          String     @default("manual")

  // 探索结果
  explorationData     Json?
  explorationSummary  String?    @db.Text

  // 错误处理
  errorMessage        String?    @db.Text
  retryCount          Int        @default(0)
  lastRetryAt         DateTime?

  // 关联
  projectId           String?
  project             Project?   @relation(fields: [projectId], references: [id])

  // 时间戳
  createdAt           DateTime   @default(now())
  startedAt           DateTime?
  completedAt         DateTime?
  updatedAt           DateTime   @updatedAt

  // 索引
  @@index([status, createdAt], map: "idx_task_status_created")
  @@index([sourceUrl], map: "idx_task_source_url")
  @@index([projectId], map: "idx_task_project_id")
  @@map("project_discovery_tasks")
}

// ================================
// Keyword Cloud System Models
// ================================

// 季度元数据表
model Quarter {
  id           Int       @id @default(autoincrement())
  quarter      String    @unique             // "2023-Q1", "2023-Q2"
  title        String    @db.Text            // "2023年第一季度"
  titleEn      String?   @db.Text            // "Q1 2023"
  subtitle     String?   @db.Text            // "聊天界面的黎明"
  subtitleEn   String?   @db.Text            // "The dawn of chat interface"
  displayOrder Int      @default(0)         // 前端排序
  isActive     Boolean  @default(true)       // 是否显示
  keywords     Keyword[]
  createdAt    DateTime @default(now())
  updatedAt    DateTime @updatedAt

  @@index([quarter], map: "idx_quarter_quarter")
  @@index([displayOrder], map: "idx_quarter_displayOrder")
  @@map("quarters")
}

// 关键词核心数据表
model Keyword {
  id             Int      @id @default(autoincrement())
  word           String                       // "ChatGPT"
  trendScore     Int                          // 0-100, 从 Google Trends 获取

  // 外键关联
  quarterId      Int
  quarter        Quarter  @relation(fields: [quarterId], references: [id], onDelete: Cascade)

  // 内容字段(支持中英双语)
  description    String   @db.Text            // AI 生成的一句话描述
  descriptionEn  String?  @db.Text            // 英文描述
  detailPoints   Json                          // JSON 数组: ["要点1", "要点2", "要点3"]
  detailPointsEn Json?                         // 英文版要点

  // 视觉样式配置
  visualConfig   Json                         // {color, size, rotation, border}

  // 元数据
  createdAt      DateTime @default(now())
  updatedAt      DateTime @updatedAt

  @@index([quarterId], map: "idx_keyword_quarterId")
  @@index([trendScore], map: "idx_keyword_trendScore")
  @@index([word], map: "idx_keyword_word")
  @@map("keywords")
}

// 视觉样式规则配置表
model VisualStyleRule {
  id          Int      @id @default(autoincrement())
  name        String   @unique              // "热门大词-金色"

  // 分数区间
  minScore    Int                           // 90
  maxScore    Int                           // 100

  // 视觉属性
  color       String                        // "primary", "secondary", "accent"
  size        String                        // "text-5xl", "text-3xl", "text-xl"
  border      String                        // "border-4", "border-2"
  rotation    String?                       // "rotate-1", "rotate-2", null

  // 控制
  priority    Int      @default(0)          // 优先级,分数重叠时按优先级
  enabled     Boolean  @default(true)       // 是否启用

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

  @@index([enabled], map: "idx_visualStyleRule_enabled")
  @@index([minScore, maxScore], map: "idx_visualStyleRule_scoreRange")
  @@map("visual_style_rules")
}

// 错误日志表
model KeywordCloudErrorLog {
  id           Int      @id @default(autoincrement())
  quarter      String                        // "2023-Q1"
  keyword      String?                       // "ChatGPT"
  errorType    String                        // "INVALID_DATA", "API_ERROR", "DB_ERROR"
  errorMessage String   @db.Text             // 详细错误信息
  rawData      Json?                         // 原始数据便于调试
  createdAt    DateTime @default(now())

  @@index([quarter], map: "idx_keywordCloudErrorLog_quarter")
  @@index([errorType], map: "idx_keywordCloudErrorLog_errorType")
  @@map("keyword_cloud_error_logs")
}