// 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"
}

datasource db {
  provider = "postgresql"
  url      = env("DATABASE_URL")
  schemas  = ["platform_schema", "aia_schema", "pkb_schema", "asl_schema", "common_schema", "dc_schema", "rvw_schema", "admin_schema", "ssa_schema", "st_schema", "public"]
}

// ==================== 用户模块 ====================

model User {
  id        String  @id @default(uuid())
  email     String  @unique
  password  String
  name      String?
  avatarUrl String? @map("avatar_url")

  role   String @default("user")
  status String @default("active")

  kbQuota Int @default(3) @map("kb_quota")
  kbUsed  Int @default(0) @map("kb_used")

  trialEndsAt DateTime? @map("trial_ends_at")
  isTrial     Boolean   @default(true) @map("is_trial")

  lastLoginAt DateTime? @map("last_login_at")
  createdAt   DateTime  @default(now()) @map("created_at")
  updatedAt   DateTime  @updatedAt @map("updated_at")

  projects             Project[]
  conversations        Conversation[]
  knowledgeBases       KnowledgeBase[]
  documents            Document[]
  adminLogs            AdminLog[]
  generalConversations GeneralConversation[]
  batchTasks           BatchTask[] // Phase 3: 批处理任务
  taskTemplates        TaskTemplate[] // Phase 3: 任务模板
  reviewTasks          ReviewTask[] // 稿件审查任务
  aslProjects          AslScreeningProject[] @relation("AslProjects") // ASL智能文献项目

  @@index([email])
  @@index([status])
  @@index([createdAt])
  @@map("users")
  @@schema("platform_schema")
}

// ==================== 项目模块 ====================

model Project {
  id                String @id @default(uuid())
  userId            String @map("user_id")
  name              String
  background        String @default("") @db.Text
  researchType      String @default("observational") @map("research_type")
  conversationCount Int    @default(0) @map("conversation_count")

  createdAt DateTime  @default(now()) @map("created_at")
  updatedAt DateTime  @updatedAt @map("updated_at")
  deletedAt DateTime? @map("deleted_at")

  user          User           @relation(fields: [userId], references: [id], onDelete: Cascade)
  conversations Conversation[]

  @@index([userId])
  @@index([createdAt])
  @@index([deletedAt])
  @@map("projects")
  @@schema("aia_schema")
}

// ==================== 对话模块 ====================

model Conversation {
  id           String  @id @default(uuid())
  userId       String  @map("user_id")
  projectId    String? @map("project_id")
  agentId      String  @map("agent_id")
  title        String
  modelName    String  @default("deepseek-v3") @map("model_name")
  messageCount Int     @default(0) @map("message_count")
  totalTokens  Int     @default(0) @map("total_tokens")
  metadata     Json?

  createdAt DateTime  @default(now()) @map("created_at")
  updatedAt DateTime  @updatedAt @map("updated_at")
  deletedAt DateTime? @map("deleted_at")

  user     User      @relation(fields: [userId], references: [id], onDelete: Cascade)
  project  Project?  @relation(fields: [projectId], references: [id], onDelete: Cascade)
  messages Message[]

  @@index([userId])
  @@index([projectId])
  @@index([agentId])
  @@index([createdAt])
  @@index([deletedAt])
  @@map("conversations")
  @@schema("aia_schema")
}

model Message {
  id             String  @id @default(uuid())
  conversationId String  @map("conversation_id")
  role           String
  content        String  @db.Text
  model          String?
  metadata       Json?
  tokens         Int?
  isPinned       Boolean @default(false) @map("is_pinned")

  createdAt DateTime @default(now()) @map("created_at")

  conversation Conversation @relation(fields: [conversationId], references: [id], onDelete: Cascade)

  @@index([conversationId])
  @@index([createdAt])
  @@index([isPinned])
  @@map("messages")
  @@schema("aia_schema")
}

// ==================== 知识库模块 ====================

model KnowledgeBase {
  id             String  @id @default(uuid())
  userId         String  @map("user_id")
  name           String
  description    String?
  difyDatasetId  String  @map("dify_dataset_id")
  fileCount      Int     @default(0) @map("file_count")
  totalSizeBytes BigInt  @default(0) @map("total_size_bytes")

  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  user       User        @relation(fields: [userId], references: [id], onDelete: Cascade)
  documents  Document[]
  batchTasks BatchTask[] // Phase 3: 批处理任务

  @@index([userId])
  @@index([difyDatasetId])
  @@map("knowledge_bases")
  @@schema("pkb_schema")
}

model Document {
  id             String  @id @default(uuid())
  kbId           String  @map("kb_id")
  userId         String  @map("user_id")
  filename       String
  fileType       String  @map("file_type")
  fileSizeBytes  BigInt  @map("file_size_bytes")
  fileUrl        String  @map("file_url")
  difyDocumentId String  @map("dify_document_id")
  status         String  @default("uploading")
  progress       Int     @default(0)
  errorMessage   String? @map("error_message")
  segmentsCount  Int?    @map("segments_count")
  tokensCount    Int?    @map("tokens_count")

  // Phase 2: 全文阅读模式新增字段
  extractionMethod  String? @map("extraction_method") // pymupdf/nougat/mammoth/direct
  extractionQuality Float?  @map("extraction_quality") // 0-1质量分数
  charCount         Int?    @map("char_count") // 字符数
  language          String? // 检测到的语言 (chinese/english)
  extractedText     String? @map("extracted_text") @db.Text // 提取的文本内容

  uploadedAt  DateTime  @default(now()) @map("uploaded_at")
  processedAt DateTime? @map("processed_at")

  knowledgeBase KnowledgeBase @relation(fields: [kbId], references: [id], onDelete: Cascade)
  user          User          @relation(fields: [userId], references: [id], onDelete: Cascade)
  batchResults  BatchResult[] // Phase 3: 批处理结果

  @@index([kbId])
  @@index([userId])
  @@index([status])
  @@index([difyDocumentId])
  @@index([extractionMethod])
  @@map("documents")
  @@schema("pkb_schema")
}

// ==================== Phase 3: 批处理模块 ====================

// 批处理任务
model BatchTask {
  id     String @id @default(uuid())
  userId String @map("user_id")
  kbId   String @map("kb_id")

  // 任务基本信息
  name         String // 任务名称（用户可自定义）
  templateType String  @map("template_type") // 'preset' | 'custom'
  templateId   String? @map("template_id") // 预设模板ID（如'clinical_research'）
  prompt       String  @db.Text // 提示词（完整的）

  // 执行状态
  status         String // 'processing' | 'completed' | 'failed' | 'paused'
  totalDocuments Int    @map("total_documents")
  completedCount Int    @default(0) @map("completed_count")
  failedCount    Int    @default(0) @map("failed_count")

  // 配置
  modelType   String @map("model_type") // 使用的模型
  concurrency Int    @default(3) // 固定为3

  // 时间统计
  startedAt       DateTime? @map("started_at")
  completedAt     DateTime? @map("completed_at")
  durationSeconds Int?      @map("duration_seconds") // 执行时长(秒)

  // 关联
  results       BatchResult[]
  user          User          @relation(fields: [userId], references: [id], onDelete: Cascade)
  knowledgeBase KnowledgeBase @relation(fields: [kbId], references: [id], onDelete: Cascade)

  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  @@index([userId])
  @@index([kbId])
  @@index([status])
  @@index([createdAt])
  @@map("batch_tasks")
  @@schema("pkb_schema")
}

// 批处理结果（每篇文献一条）
model BatchResult {
  id         String @id @default(uuid())
  taskId     String @map("task_id")
  documentId String @map("document_id")

  // 执行结果
  status       String // 'success' | 'failed'
  data         Json? // 提取的结构化数据（预设模板）或文本（自定义）
  rawOutput    String? @map("raw_output") @db.Text // AI原始输出（备份）
  errorMessage String? @map("error_message") @db.Text // 错误信息

  // 性能指标
  processingTimeMs Int? @map("processing_time_ms") // 处理时长(毫秒)
  tokensUsed       Int? @map("tokens_used") // Token使用量

  // 关联
  task     BatchTask @relation(fields: [taskId], references: [id], onDelete: Cascade)
  document Document  @relation(fields: [documentId], references: [id], onDelete: Cascade)

  createdAt DateTime @default(now()) @map("created_at")

  @@index([taskId])
  @@index([documentId])
  @@index([status])
  @@map("batch_results")
  @@schema("pkb_schema")
}

// 任务模板（暂不实现，预留）
model TaskTemplate {
  id     String @id @default(uuid())
  userId String @map("user_id")

  name         String
  description  String?
  prompt       String  @db.Text
  outputFields Json // 期望的输出字段定义
  isPublic     Boolean @default(false) @map("is_public")

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

  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  @@index([userId])
  @@map("task_templates")
  @@schema("pkb_schema")
}

// ==================== 运营管理模块 ====================

model AdminLog {
  id           Int     @id @default(autoincrement())
  adminId      String  @map("admin_id")
  action       String
  resourceType String? @map("resource_type")
  resourceId   String? @map("resource_id")
  details      Json?
  ipAddress    String? @map("ip_address")
  userAgent    String? @map("user_agent")

  createdAt DateTime @default(now()) @map("created_at")

  admin User @relation(fields: [adminId], references: [id], onDelete: Cascade)

  @@index([adminId])
  @@index([createdAt])
  @@index([action])
  @@map("admin_logs")
  @@schema("public")
}

// ==================== 通用对话模块 ====================

model GeneralConversation {
  id        String  @id @default(uuid())
  userId    String  @map("user_id")
  title     String
  modelName String? @map("model_name")

  createdAt DateTime  @default(now()) @map("created_at")
  updatedAt DateTime  @default(now()) @updatedAt @map("updated_at")
  deletedAt DateTime? @map("deleted_at")

  user     User             @relation(fields: [userId], references: [id], onDelete: Cascade)
  messages GeneralMessage[]

  @@index([userId])
  @@index([createdAt])
  @@index([updatedAt])
  @@map("general_conversations")
  @@schema("aia_schema")
}

model GeneralMessage {
  id             String  @id @default(uuid())
  conversationId String  @map("conversation_id")
  role           String
  content        String  @db.Text
  model          String?
  metadata       Json?
  tokens         Int?

  createdAt DateTime @default(now()) @map("created_at")

  conversation GeneralConversation @relation(fields: [conversationId], references: [id], onDelete: Cascade)

  @@index([conversationId])
  @@index([createdAt])
  @@map("general_messages")
  @@schema("aia_schema")
}

// ==================== 稿件审查模块 ====================

// 稿件审查任务
model ReviewTask {
  id     String @id @default(uuid())
  userId String @map("user_id")

  // 文件信息
  fileName String  @map("file_name")
  fileSize Int     @map("file_size")
  filePath String? @map("file_path")

  // 文档内容
  extractedText String @map("extracted_text") @db.Text
  wordCount     Int?   @map("word_count")

  // 执行状态
  status String @default("pending")
  // pending, extracting, reviewing_editorial, reviewing_methodology, completed, failed

  // 评估结果（JSON）
  editorialReview   Json?  @map("editorial_review")
  methodologyReview Json?  @map("methodology_review")
  overallScore      Float? @map("overall_score")

  // 执行信息
  modelUsed       String?   @map("model_used")
  startedAt       DateTime? @map("started_at")
  completedAt     DateTime? @map("completed_at")
  durationSeconds Int?      @map("duration_seconds")
  errorMessage    String?   @map("error_message") @db.Text

  // 元数据
  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  // 关联
  user User @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@index([userId])
  @@index([status])
  @@index([createdAt])
  @@map("review_tasks")
  @@schema("public")
}

// ==================== ASL智能文献模块 ====================

// ASL 筛选项目表
model AslScreeningProject {
  id     String @id @default(uuid())
  userId String @map("user_id")
  user   User   @relation("AslProjects", fields: [userId], references: [id], onDelete: Cascade)

  projectName String @map("project_name")

  // PICO标准
  picoCriteria Json @map("pico_criteria") // { population, intervention, comparison, outcome, studyDesign }

  // 筛选标准
  inclusionCriteria String @map("inclusion_criteria") @db.Text
  exclusionCriteria String @map("exclusion_criteria") @db.Text

  // 状态
  status String @default("draft") // draft, screening, completed

  // 筛选配置
  screeningConfig Json? @map("screening_config") // { models: ["deepseek", "qwen"], temperature: 0 }

  // 关联
  literatures              AslLiterature[]
  screeningTasks           AslScreeningTask[]
  screeningResults         AslScreeningResult[]
  fulltextScreeningTasks   AslFulltextScreeningTask[]
  fulltextScreeningResults AslFulltextScreeningResult[]

  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  @@index([userId])
  @@index([status])
  @@map("screening_projects")
  @@schema("asl_schema")
}

// ASL 文献条目表
model AslLiterature {
  id        String              @id @default(uuid())
  projectId String              @map("project_id")
  project   AslScreeningProject @relation(fields: [projectId], references: [id], onDelete: Cascade)

  // 文献基本信息
  pmid            String?
  title           String  @db.Text
  abstract        String  @db.Text
  authors         String?
  journal         String?
  publicationYear Int?    @map("publication_year")
  doi             String?

  // 文献阶段（生命周期管理）
  stage String @default("imported") @map("stage")
  // imported, title_screened, title_included, pdf_acquired, fulltext_screened, data_extracted

  // 云原生存储字段（V1.0 阶段使用，MVP阶段预留）
  pdfUrl      String? @map("pdf_url") // PDF访问URL
  pdfOssKey   String? @map("pdf_oss_key") // OSS存储Key（用于删除）
  pdfFileSize Int?    @map("pdf_file_size") // 文件大小（字节）

  // PDF存储（Dify/OSS双适配）
  hasPdf         Boolean   @default(false) @map("has_pdf")
  pdfStorageType String?   @map("pdf_storage_type") // "dify" | "oss"
  pdfStorageRef  String?   @map("pdf_storage_ref") // Dify: document_id, OSS: object_key
  pdfStatus      String?   @map("pdf_status") // "uploading" | "ready" | "failed"
  pdfUploadedAt  DateTime? @map("pdf_uploaded_at")

  // 全文内容存储（云原生：存储引用而非内容）
  fullTextStorageType String?   @map("full_text_storage_type") // "dify" | "oss"
  fullTextStorageRef  String?   @map("full_text_storage_ref") // document_id 或 object_key
  fullTextUrl         String?   @map("full_text_url") // 访问URL
  fullTextFormat      String?   @map("full_text_format") // "markdown" | "plaintext"
  fullTextSource      String?   @map("full_text_source") // "nougat" | "pymupdf"
  fullTextTokenCount  Int?      @map("full_text_token_count")
  fullTextExtractedAt DateTime? @map("full_text_extracted_at")

  // 关联
  screeningResults         AslScreeningResult[]
  fulltextScreeningResults AslFulltextScreeningResult[]

  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  @@unique([projectId, pmid])
  @@index([projectId])
  @@index([doi])
  @@index([stage])
  @@index([hasPdf])
  @@index([pdfStatus])
  @@map("literatures")
  @@schema("asl_schema")
}

// ASL 筛选结果表
model AslScreeningResult {
  id           String              @id @default(uuid())
  projectId    String              @map("project_id")
  project      AslScreeningProject @relation(fields: [projectId], references: [id], onDelete: Cascade)
  literatureId String              @map("literature_id")
  literature   AslLiterature       @relation(fields: [literatureId], references: [id], onDelete: Cascade)

  // DeepSeek模型判断
  dsModelName  String  @map("ds_model_name") // "deepseek-chat"
  dsPJudgment  String? @map("ds_p_judgment") // "match" | "partial" | "mismatch"
  dsIJudgment  String? @map("ds_i_judgment")
  dsCJudgment  String? @map("ds_c_judgment")
  dsSJudgment  String? @map("ds_s_judgment")
  dsConclusion String? @map("ds_conclusion") // "include" | "exclude" | "uncertain"
  dsConfidence Float?  @map("ds_confidence") // 0-1

  // DeepSeek模型证据
  dsPEvidence String? @map("ds_p_evidence") @db.Text
  dsIEvidence String? @map("ds_i_evidence") @db.Text
  dsCEvidence String? @map("ds_c_evidence") @db.Text
  dsSEvidence String? @map("ds_s_evidence") @db.Text
  dsReason    String? @map("ds_reason") @db.Text

  // Qwen模型判断
  qwenModelName  String  @map("qwen_model_name") // "qwen-max"
  qwenPJudgment  String? @map("qwen_p_judgment")
  qwenIJudgment  String? @map("qwen_i_judgment")
  qwenCJudgment  String? @map("qwen_c_judgment")
  qwenSJudgment  String? @map("qwen_s_judgment")
  qwenConclusion String? @map("qwen_conclusion")
  qwenConfidence Float?  @map("qwen_confidence")

  // Qwen模型证据
  qwenPEvidence String? @map("qwen_p_evidence") @db.Text
  qwenIEvidence String? @map("qwen_i_evidence") @db.Text
  qwenCEvidence String? @map("qwen_c_evidence") @db.Text
  qwenSEvidence String? @map("qwen_s_evidence") @db.Text
  qwenReason    String? @map("qwen_reason") @db.Text

  // 冲突状态
  conflictStatus String @default("none") @map("conflict_status") // "none" | "conflict" | "resolved"
  conflictFields Json?  @map("conflict_fields") // ["P", "I", "conclusion"]

  // 最终决策
  finalDecision   String?   @map("final_decision") // "include" | "exclude" | "pending"
  finalDecisionBy String?   @map("final_decision_by") // userId
  finalDecisionAt DateTime? @map("final_decision_at")
  exclusionReason String?   @map("exclusion_reason") @db.Text

  // AI处理状态
  aiProcessingStatus String    @default("pending") @map("ai_processing_status") // "pending" | "processing" | "completed" | "failed"
  aiProcessedAt      DateTime? @map("ai_processed_at")
  aiErrorMessage     String?   @map("ai_error_message") @db.Text

  // 可追溯信息
  promptVersion String @default("v1.0.0") @map("prompt_version")
  rawOutput     Json?  @map("raw_output") // 原始LLM输出（备份）

  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  @@unique([projectId, literatureId])
  @@index([projectId])
  @@index([literatureId])
  @@index([conflictStatus])
  @@index([finalDecision])
  @@map("screening_results")
  @@schema("asl_schema")
}

// ASL 筛选任务表（标题摘要初筛）
model AslScreeningTask {
  id        String              @id @default(uuid())
  projectId String              @map("project_id")
  project   AslScreeningProject @relation(fields: [projectId], references: [id], onDelete: Cascade)

  taskType String @map("task_type") // "title_abstract" | "full_text"
  status   String @default("pending") // "pending" | "running" | "completed" | "failed"

  // 进度统计
  totalItems     Int @map("total_items")
  processedItems Int @default(0) @map("processed_items")
  successItems   Int @default(0) @map("success_items")
  failedItems    Int @default(0) @map("failed_items")
  conflictItems  Int @default(0) @map("conflict_items")

  // 时间信息
  startedAt      DateTime? @map("started_at")
  completedAt    DateTime? @map("completed_at")
  estimatedEndAt DateTime? @map("estimated_end_at")

  // 错误信息
  errorMessage String? @map("error_message") @db.Text

  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  @@index([projectId])
  @@index([status])
  @@map("screening_tasks")
  @@schema("asl_schema")
}

// ASL 全文复筛任务表
model AslFulltextScreeningTask {
  id        String              @id @default(uuid())
  projectId String              @map("project_id")
  project   AslScreeningProject @relation(fields: [projectId], references: [id], onDelete: Cascade)

  // 任务配置
  modelA        String @map("model_a") // "deepseek-v3"
  modelB        String @map("model_b") // "qwen-max"
  promptVersion String @default("v1.0.0") @map("prompt_version")

  // 任务状态
  status String @default("pending")
  // "pending" | "running" | "completed" | "failed" | "cancelled"

  // 进度统计
  totalCount     Int @map("total_count")
  processedCount Int @default(0) @map("processed_count")
  successCount   Int @default(0) @map("success_count")
  failedCount    Int @default(0) @map("failed_count")
  degradedCount  Int @default(0) @map("degraded_count") // 单模型成功

  // 成本统计
  totalTokens Int   @default(0) @map("total_tokens")
  totalCost   Float @default(0) @map("total_cost")

  // 时间信息
  startedAt      DateTime? @map("started_at")
  completedAt    DateTime? @map("completed_at")
  estimatedEndAt DateTime? @map("estimated_end_at")

  // 错误信息
  errorMessage String? @map("error_message") @db.Text
  errorStack   String? @map("error_stack") @db.Text

  // 关联
  results AslFulltextScreeningResult[]

  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  @@index([projectId])
  @@index([status])
  @@index([createdAt])
  @@map("fulltext_screening_tasks")
  @@schema("asl_schema")
}

// ASL 全文复筛结果表（12字段评估）
model AslFulltextScreeningResult {
  id           String                   @id @default(uuid())
  taskId       String                   @map("task_id")
  task         AslFulltextScreeningTask @relation(fields: [taskId], references: [id], onDelete: Cascade)
  projectId    String                   @map("project_id")
  project      AslScreeningProject      @relation(fields: [projectId], references: [id], onDelete: Cascade)
  literatureId String                   @map("literature_id")
  literature   AslLiterature            @relation(fields: [literatureId], references: [id], onDelete: Cascade)

  // ====== 模型A结果（DeepSeek-V3）======
  modelAName          String  @map("model_a_name")
  modelAStatus        String  @map("model_a_status") // "success" | "failed"
  modelAFields        Json    @map("model_a_fields") // 12字段评估 { field1: {...}, field2: {...}, ... }
  modelAOverall       Json    @map("model_a_overall") // 总体评估 { decision, confidence, keyIssues }
  modelAProcessingLog Json?   @map("model_a_processing_log")
  modelAVerification  Json?   @map("model_a_verification")
  modelATokens        Int?    @map("model_a_tokens")
  modelACost          Float?  @map("model_a_cost")
  modelAError         String? @map("model_a_error") @db.Text

  // ====== 模型B结果（Qwen-Max）======
  modelBName          String  @map("model_b_name")
  modelBStatus        String  @map("model_b_status") // "success" | "failed"
  modelBFields        Json    @map("model_b_fields") // 12字段评估
  modelBOverall       Json    @map("model_b_overall") // 总体评估
  modelBProcessingLog Json?   @map("model_b_processing_log")
  modelBVerification  Json?   @map("model_b_verification")
  modelBTokens        Int?    @map("model_b_tokens")
  modelBCost          Float?  @map("model_b_cost")
  modelBError         String? @map("model_b_error") @db.Text

  // ====== 验证结果 ======
  medicalLogicIssues  Json? @map("medical_logic_issues") // MedicalLogicValidator输出
  evidenceChainIssues Json? @map("evidence_chain_issues") // EvidenceChainValidator输出

  // ====== 冲突检测 ======
  isConflict       Boolean   @default(false) @map("is_conflict")
  conflictSeverity String?   @map("conflict_severity") // "high" | "medium" | "low"
  conflictFields   String[]  @map("conflict_fields") // ["field1", "field9", "overall"]
  conflictDetails  Json?     @map("conflict_details") // 详细冲突描述
  reviewPriority   Int?      @map("review_priority") // 0-100复核优先级
  reviewDeadline   DateTime? @map("review_deadline")

  // ====== 最终决策 ======
  finalDecision   String?   @map("final_decision") // "include" | "exclude" | null
  finalDecisionBy String?   @map("final_decision_by") // userId
  finalDecisionAt DateTime? @map("final_decision_at")
  exclusionReason String?   @map("exclusion_reason") @db.Text
  reviewNotes     String?   @map("review_notes") @db.Text

  // ====== 处理状态 ======
  processingStatus String  @default("pending") @map("processing_status")
  // "pending" | "processing" | "completed" | "failed" | "degraded"
  isDegraded       Boolean @default(false) @map("is_degraded") // 单模型成功
  degradedModel    String? @map("degraded_model") // "modelA" | "modelB"

  processedAt DateTime? @map("processed_at")

  // ====== 可追溯信息 ======
  promptVersion String @default("v1.0.0") @map("prompt_version")
  rawOutputA    Json?  @map("raw_output_a") // 模型A原始输出
  rawOutputB    Json?  @map("raw_output_b") // 模型B原始输出

  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  @@unique([projectId, literatureId]) // 一篇文献只有一个全文复筛结果
  @@index([taskId])
  @@index([projectId])
  @@index([literatureId])
  @@index([isConflict])
  @@index([finalDecision])
  @@index([reviewPriority])
  @@map("fulltext_screening_results")
  @@schema("asl_schema")
}

// ==================== DC数据清洗模块 - Tool B (病历结构化机器人) ====================

// 健康检查缓存表
model DCHealthCheck {
  id String @id @default(uuid())
  
  userId     String @map("user_id")
  fileName   String @map("file_name")
  columnName String @map("column_name")
  
  // 统计指标
  emptyRate       Float @map("empty_rate") // 空值率 (0-1)
  avgLength       Float @map("avg_length") // 平均文本长度
  totalRows       Int   @map("total_rows")
  estimatedTokens Int   @map("estimated_tokens")
  
  // 检查结果
  status  String @map("status") // 'good' | 'bad'
  message String @map("message")
  
  createdAt DateTime @default(now()) @map("created_at")
  
  @@index([userId, fileName])
  @@map("dc_health_checks")
  @@schema("dc_schema")
}

// 预设模板表
model DCTemplate {
  id String @id @default(uuid())
  
  diseaseType String @map("disease_type") // 'lung_cancer', 'diabetes', 'hypertension'
  reportType  String @map("report_type") // 'pathology', 'admission', 'outpatient'
  displayName String @map("display_name") // '肺癌病理报告'
  
  fields         Json   @map("fields") // [{name, desc, width}]
  promptTemplate String @map("prompt_template") @db.Text
  
  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")
  
  @@unique([diseaseType, reportType])
  @@map("dc_templates")
  @@schema("dc_schema")
}

// 提取任务表
model DCExtractionTask {
  id String @id @default(uuid())
  
  userId     String @map("user_id")
  projectName String @map("project_name")
  sourceFileKey String @map("source_file_key") // Storage中的路径
  textColumn  String @map("text_column")
  
  // 模板配置
  diseaseType  String @map("disease_type")
  reportType   String @map("report_type")
  targetFields Json   @map("target_fields") // [{name, desc}]
  
  // 双模型配置
  modelA String @default("deepseek-v3") @map("model_a")
  modelB String @default("qwen-max") @map("model_b")
  
  // 任务状态
  status         String @default("pending") @map("status") // 'pending'|'processing'|'completed'|'failed'
  totalCount     Int    @default(0) @map("total_count")
  processedCount Int    @default(0) @map("processed_count")
  cleanCount     Int    @default(0) @map("clean_count") // 一致数
  conflictCount  Int    @default(0) @map("conflict_count") // 冲突数
  failedCount    Int    @default(0) @map("failed_count")
  
  // 成本统计
  totalTokens Int   @default(0) @map("total_tokens")
  totalCost   Float @default(0) @map("total_cost")
  
  // 错误信息
  error String? @map("error")
  
  // 时间戳
  createdAt   DateTime  @default(now()) @map("created_at")
  startedAt   DateTime? @map("started_at")
  completedAt DateTime? @map("completed_at")
  
  items DCExtractionItem[]
  
  @@index([userId, status])
  @@map("dc_extraction_tasks")
  @@schema("dc_schema")
}

// 提取记录表 (每条病历记录)
model DCExtractionItem {
  id     String @id @default(uuid())
  taskId String @map("task_id")
  
  // 原始数据
  rowIndex     Int    @map("row_index")
  originalText String @map("original_text") @db.Text
  
  // 双模型结果 (V2核心)
  resultA Json? @map("result_a") // DeepSeek结果 {"肿瘤大小": "3cm"}
  resultB Json? @map("result_b") // Qwen结果 {"肿瘤大小": "3.0cm"}
  
  // 冲突检测
  status         String   @default("pending") @map("status") // 'pending'|'clean'|'conflict'|'resolved'|'failed'
  conflictFields String[] @default([]) @map("conflict_fields") // ["肿瘤大小"]
  
  // 最终结果 (用户裁决后或自动采纳)
  finalResult Json? @map("final_result")
  
  // Token统计
  tokensA Int @default(0) @map("tokens_a")
  tokensB Int @default(0) @map("tokens_b")
  
  // 错误信息
  error String? @map("error")
  
  createdAt  DateTime  @default(now()) @map("created_at")
  resolvedAt DateTime? @map("resolved_at")
  
  task DCExtractionTask @relation(fields: [taskId], references: [id], onDelete: Cascade)
  
  @@index([taskId, status])
  @@map("dc_extraction_items")
  @@schema("dc_schema")
}

// ==================== DC数据清洗模块 - Tool C (科研数据编辑器) ====================

// Tool C Session 会话表
model DcToolCSession {
  id        String @id @default(uuid())
  userId    String @map("user_id")
  fileName  String @map("file_name")
  fileKey   String @map("file_key") // OSS存储key: dc/tool-c/sessions/{timestamp}-{fileName}
  
  // 数据元信息
  totalRows Int    @map("total_rows")
  totalCols Int    @map("total_cols")
  columns   Json   @map("columns") // ["age", "gender", "diagnosis"] 列名数组
  encoding  String? @map("encoding") // 文件编码 utf-8, gbk等
  fileSize  Int    @map("file_size") // 文件大小（字节）
  
  // 时间戳
  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")
  expiresAt DateTime @map("expires_at") // 过期时间（创建后10分钟）
  
  @@index([userId])
  @@index([expiresAt])
  @@map("dc_tool_c_sessions")
  @@schema("dc_schema")
}

// Tool C AI对话历史表
model DcToolCAiHistory {
  id                String   @id @default(uuid())
  sessionId         String   @map("session_id") // 关联Tool C Session
  userId            String   @map("user_id")
  role              String   @map("role") // user/assistant/system
  content           String   @db.Text // 消息内容
  
  // Tool C特有字段
  generatedCode     String?  @db.Text @map("generated_code") // AI生成的代码
  codeExplanation   String?  @db.Text @map("code_explanation") // 代码解释
  executeStatus     String?  @map("execute_status") // pending/success/failed
  executeResult     Json?    @map("execute_result") // 执行结果
  executeError      String?  @db.Text @map("execute_error") // 错误信息
  retryCount        Int      @default(0) @map("retry_count") // 重试次数
  
  // LLM相关
  model             String?  @map("model") // deepseek-v3/qwen3等
  createdAt         DateTime @default(now()) @map("created_at")
  
  @@index([sessionId])
  @@index([userId])
  @@index([createdAt])
  @@map("dc_tool_c_ai_history")
  @@schema("dc_schema")
}