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

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

model User {
  id           String               @id @default(cuid())
  email        String               @unique
  passwordHash String
  name         String?
  role         String               @default("SEEKER") // SEEKER, EMPLOYER, ADMIN
  createdAt    DateTime             @default(now())
  updatedAt    DateTime             @updatedAt
  resumes      Resume[]
  interactions UserJobInteraction[]
  profile      UserProfile?
  applications Application[]
  jobAlerts    JobAlert[]
  savedJobs    SavedJob[]
  savedSearches SavedSearch[]
  statusChanges ApplicationStatusHistory[]
  authoredNotes CandidateNote[]
  createdTags   CandidateTag[]
  notifications Notification[]
  notificationPreference NotificationPreference?
  companyReviews CompanyReview[]
  companyId            String?
  company              Company?             @relation(fields: [companyId], references: [id], onDelete: SetNull)
  postedJobs           Job[]                @relation("PostedJobs")
  auditLogs            AuditLog[]           @relation("ActorAuditLogs")
  emailVerified        DateTime?
  failedLoginAttempts  Int                  @default(0)
  lockedUntil          DateTime?
  passwordResetTokens  PasswordResetToken[]
  memberships          OrganizationMembership[]
  createdInvitations   OrganizationInvitation[] @relation("InvitedBy")
  companyClaims        CompanyClaim[]           @relation("Claimant")
  analyses             JobAnalysisCache[]
}

model UserProfile {
  id           String           @id @default(cuid())
  userId       String           @unique
  user         User             @relation(fields: [userId], references: [id], onDelete: Cascade)
  headline     String?
  bio          String?
  phone        String?
  location     String?
  isPublic     Boolean          @default(true)
  searchableToEmployers Boolean @default(false)
  skills       CandidateSkill[]
  workHistory  WorkExperience[]
  education    Education[]
  createdAt    DateTime         @default(now())
  updatedAt    DateTime         @updatedAt
}

model CandidateSkill {
  id        String      @id @default(cuid())
  profileId String
  profile   UserProfile @relation(fields: [profileId], references: [id], onDelete: Cascade)
  name      String
  level     String?     // BEGINNER, INTERMEDIATE, EXPERT
}

model WorkExperience {
  id          String      @id @default(cuid())
  profileId   String
  profile     UserProfile @relation(fields: [profileId], references: [id], onDelete: Cascade)
  company     String
  title       String
  location    String?
  startDate   DateTime
  endDate     DateTime?
  isCurrent   Boolean     @default(false)
  description String?
}

model Education {
  id          String      @id @default(cuid())
  profileId   String
  profile     UserProfile @relation(fields: [profileId], references: [id], onDelete: Cascade)
  institution String
  degree      String
  fieldOfStudy String?
  startDate   DateTime?
  endDate     DateTime?
}

model Resume {
  id                  String   @id @default(cuid())
  userId              String
  user                User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  title               String   @default("My Resume")
  data                String   @default("{}")
  isActiveForMatching Boolean  @default(false)
  createdAt           DateTime @default(now())
  updatedAt           DateTime @updatedAt

  @@index([userId])
}

model Job {
  id              String               @id @default(cuid())
  jobUrlHash      String               @unique
  fingerprintHash String?              // sha256(canonicalCompany + canonicalTitle + location + type)
  title           String
  company         String
  location        String
  isRemote        Boolean              @default(false)
  department      String?
  experienceLevel String?
  description     String
  salaryMin       Float?
  salaryMax       Float?
  jobUrl          String
  source          String
  sourceId        String?              // External source ID in JobSource registry
  moderationStatus String              @default("APPROVED") // APPROVED, PENDING_REVIEW, REJECTED, FLAGGED
  moderationReason String?
  moderatedAt     DateTime?
  lifecycleStatus String               @default("ACTIVE") // ACTIVE, STALE, EXPIRED, ARCHIVED
  firstSeenAt     DateTime             @default(now())
  lastSeenAt      DateTime             @default(now())
  missingScanCount Int                 @default(0)
  expiredAt       DateTime?
  rawPayloadJson  String?              // Preservation of original raw source payload
  datePosted      DateTime?
  companyId       String?
  companyRef      Company?             @relation(fields: [companyId], references: [id], onDelete: SetNull)
  postedById      String?
  postedBy        User?                @relation("PostedJobs", fields: [postedById], references: [id], onDelete: SetNull)
  createdAt       DateTime             @default(now())
  updatedAt       DateTime             @updatedAt
  interactions    UserJobInteraction[]
  applications    Application[]
  savedBy         SavedJob[]

  @@index([companyId])
  @@index([postedById])
  @@index([location])
  @@index([isRemote])
  @@index([department])
  @@index([experienceLevel])
  @@index([datePosted])
  @@index([source])
  @@index([moderationStatus])
  @@index([lifecycleStatus])
  @@index([fingerprintHash])
  @@index([sourceId])
}

model UserJobInteraction {
  id        String   @id @default(cuid())
  userId    String
  jobId     String
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  job       Job      @relation(fields: [jobId], references: [id], onDelete: Cascade)
  status    String
  notes     String?
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  @@unique([userId, jobId])
  @@index([userId])
  @@index([jobId])
}

model Application {
  id            String   @id @default(cuid())
  jobId         String
  applicantId   String
  job           Job      @relation(fields: [jobId], references: [id], onDelete: Cascade)
  applicant     User     @relation(fields: [applicantId], references: [id], onDelete: Cascade)
  resumeId      String?
  coverLetter   String?
  status        String   @default("APPLIED") // APPLIED, SCREENING, INTERVIEW, OFFER, REJECTED, HIRED
  answersJson   String?
  snapshotJson  String?
  employerNotes String?
  createdAt     DateTime @default(now())
  updatedAt     DateTime @updatedAt
  statusHistory ApplicationStatusHistory[]
  candidateNotes CandidateNote[]
  candidateTags  CandidateTag[]

  @@unique([jobId, applicantId])
  @@index([applicantId])
  @@index([jobId])
  @@index([status])
}

model JobAlert {
  id            String   @id @default(cuid())
  userId        String
  user          User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  titleQuery    String?
  locationQuery String?
  isRemoteOnly  Boolean  @default(false)
  minSalary     Float?
  frequency     String   @default("DAILY") // DAILY, WEEKLY
  isActive      Boolean  @default(true)
  lastSentAt    DateTime?
  createdAt     DateTime @default(now())
  updatedAt     DateTime @updatedAt

  @@index([userId])
}

model Company {
  id                 String                   @id @default(cuid())
  name               String                   @unique
  logoUrl            String?
  website            String?
  cultureInfo        String?
  location           String?
  description        String?
  verificationStatus String                   @default("UNCLAIMED") // UNCLAIMED, PENDING_VERIFICATION, VERIFIED, REJECTED, REVOKED
  trustStatus        String                   @default("UNVERIFIED") // NEW, UNVERIFIED, PENDING_REVIEW, VERIFIED, RESTRICTED, SUSPENDED
  verifiedAt         DateTime?
  reviews            CompanyReview[]
  members            User[]
  orgMembers         OrganizationMembership[]
  invitations        OrganizationInvitation[]
  claims             CompanyClaim[]
  jobs               Job[]
  createdAt          DateTime                 @default(now())
  updatedAt          DateTime                 @default(now()) @updatedAt

  @@index([trustStatus])
  @@index([verificationStatus])
}

model OrganizationMembership {
  id             String    @id @default(cuid())
  userId         String
  user           User      @relation(fields: [userId], references: [id], onDelete: Cascade)
  companyId      String
  company        Company   @relation(fields: [companyId], references: [id], onDelete: Cascade)
  role           String    @default("RECRUITER") // OWNER, ADMIN, RECRUITER, HIRING_MANAGER
  status         String    @default("ACTIVE") // ACTIVE, SUSPENDED, INVITED
  createdAt      DateTime  @default(now())
  updatedAt      DateTime  @updatedAt

  @@unique([userId, companyId])
  @@index([companyId])
  @@index([userId])
  @@index([role])
  @@map("organization_memberships")
}

model CompanyClaim {
  id             String    @id @default(cuid())
  companyId      String
  company        Company   @relation(fields: [companyId], references: [id], onDelete: Cascade)
  claimantId     String
  claimant       User      @relation("Claimant", fields: [claimantId], references: [id], onDelete: Cascade)
  corporateEmail String
  evidenceType   String    // DOMAIN_MATCH, DOCUMENT_SUBMISSION, MANUAL_REVIEW
  evidenceData   String?   // Documentation, notes, domain details
  status         String    @default("PENDING") // PENDING, UNDER_REVIEW, APPROVED, REJECTED, REVOKED
  adminNotes     String?
  reviewedAt     DateTime?
  reviewedById   String?
  createdAt      DateTime  @default(now())
  updatedAt      DateTime  @updatedAt

  @@index([companyId])
  @@index([claimantId])
  @@index([status])
  @@map("company_claims")
}

model OrganizationInvitation {
  id             String    @id @default(cuid())
  companyId      String
  company        Company   @relation(fields: [companyId], references: [id], onDelete: Cascade)
  email          String
  role           String    @default("RECRUITER") // ADMIN, RECRUITER, HIRING_MANAGER
  token          String    @unique
  tokenHash      String?   @unique
  invitedById    String
  invitedBy      User      @relation("InvitedBy", fields: [invitedById], references: [id], onDelete: Cascade)
  expiresAt      DateTime
  acceptedAt     DateTime?
  revokedAt      DateTime?
  createdAt      DateTime  @default(now())

  @@index([companyId])
  @@index([email])
  @@index([token])
  @@index([tokenHash])
  @@map("organization_invitations")
}

model CompanyReview {
  id           String   @id @default(cuid())
  companyId    String
  company      Company  @relation(fields: [companyId], references: [id], onDelete: Cascade)
  authorId     String?
  author       User?    @relation(fields: [authorId], references: [id], onDelete: SetNull)
  rating       Int
  title        String
  content      String
  status       String   @default("PENDING") // PENDING, APPROVED, REJECTED
  isApproved   Boolean  @default(false)
  isReported   Boolean  @default(false)
  reportReason String?
  createdAt    DateTime @default(now())

  @@unique([companyId, authorId])
  @@index([companyId])
  @@index([status])
}

model FeaturedJob {
  id        String    @id @default(cuid())
  jobId     String    @unique
  tier      String    @default("FEATURED")
  expiresAt DateTime?
  createdAt DateTime  @default(now())
}

model SavedJob {
  id        String   @id @default(cuid())
  userId    String
  jobId     String
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  job       Job      @relation(fields: [jobId], references: [id], onDelete: Cascade)
  savedAt   DateTime @default(now())

  @@unique([userId, jobId])
  @@index([userId])
  @@index([jobId])
  @@map("saved_jobs")
}

model SavedSearch {
  id             String    @id @default(cuid())
  userId         String
  user           User      @relation(fields: [userId], references: [id], onDelete: Cascade)
  name           String?
  keywords       String?
  location       String?
  department     String?
  isRemoteOnly   Boolean   @default(false)
  minSalary      Float?
  alertFrequency String    @default("DAILY") // DAILY, WEEKLY, OFF
  isActive       Boolean   @default(true)
  lastSentAt     DateTime?
  createdAt      DateTime  @default(now())
  updatedAt      DateTime  @updatedAt

  @@index([userId])
  @@index([isActive, alertFrequency])
  @@index([createdAt])
  @@map("saved_searches")
}

model ApplicationStatusHistory {
  id            String      @id @default(cuid())
  applicationId String
  application   Application @relation(fields: [applicationId], references: [id], onDelete: Cascade)
  fromStatus    String?
  toStatus      String
  changedById   String?
  changedBy     User?       @relation(fields: [changedById], references: [id], onDelete: SetNull)
  note          String?
  createdAt     DateTime    @default(now())

  @@index([applicationId])
  @@map("application_status_history")
}

model CandidateNote {
  id            String      @id @default(cuid())
  applicationId String
  application   Application @relation(fields: [applicationId], references: [id], onDelete: Cascade)
  authorId      String
  author        User        @relation(fields: [authorId], references: [id], onDelete: Cascade)
  noteText      String
  createdAt     DateTime    @default(now())
  updatedAt     DateTime    @updatedAt

  @@index([applicationId])
  @@map("candidate_notes")
}

model CandidateTag {
  id            String      @id @default(cuid())
  applicationId String
  application   Application @relation(fields: [applicationId], references: [id], onDelete: Cascade)
  tag           String
  createdById   String
  createdBy     User        @relation(fields: [createdById], references: [id], onDelete: Cascade)
  createdAt     DateTime    @default(now())

  @@unique([applicationId, tag])
  @@index([applicationId])
  @@map("candidate_tags")
}

model Notification {
  id        String    @id @default(cuid())
  userId    String
  user      User      @relation(fields: [userId], references: [id], onDelete: Cascade)
  type      String    // STATUS_CHANGE, JOB_ALERT, SYSTEM_NOTICE
  title     String
  message   String
  link      String?
  isRead    Boolean   @default(false)
  readAt    DateTime?
  createdAt DateTime  @default(now())

  @@index([userId])
  @@index([userId, isRead])
  @@map("notifications")
}

model NotificationPreference {
  id                  String   @id @default(cuid())
  userId              String   @unique
  user                User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  emailStatusChange   Boolean  @default(true)
  emailJobAlerts      Boolean  @default(true)
  inAppStatusChange   Boolean  @default(true)
  inAppJobAlerts      Boolean  @default(true)
  digestFrequency     String   @default("IMMEDIATE") // IMMEDIATE, DAILY, OFF
  updatedAt           DateTime @updatedAt

  @@map("notification_preferences")
}

model VerificationToken {
  id         String   @id @default(cuid())
  identifier String
  token      String   @unique
  expiresAt  DateTime
  createdAt  DateTime @default(now())

  @@unique([identifier, token])
  @@map("verification_tokens")
}

model PasswordResetToken {
  id        String    @id @default(cuid())
  userId    String
  user      User      @relation(fields: [userId], references: [id], onDelete: Cascade)
  token     String    @unique
  expiresAt DateTime
  usedAt    DateTime?
  createdAt DateTime  @default(now())

  @@index([userId])
  @@map("password_reset_tokens")
}

model AuditLog {
  id        String   @id @default(cuid())
  actorId   String?
  actor     User?    @relation("ActorAuditLogs", fields: [actorId], references: [id], onDelete: SetNull)
  action    String   // USER_SUSPEND, USER_REACTIVATE, USER_DELETE, ROLE_CHANGE, JOB_CREATE, JOB_DELETE, REVIEW_APPROVE, REVIEW_REJECT
  targetId  String?
  details   String?
  ipAddress String?
  createdAt DateTime @default(now())

  @@index([actorId])
  @@index([action])
  @@index([createdAt])
  @@map("audit_logs")
}

model JobAnalysisCache {
  id              String   @id @default(cuid())
  userId          String
  user            User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  targetType      String   // JOB_SEEKER_MATCH, EMPLOYER_CANDIDATE_MATCH, JOB_RECOMMENDATION
  targetId        String   // jobId or candidateId
  contentHash     String   // sha256 of candidate profile + job requirements
  analysisVersion String   @default("v1.0")
  modelId         String   @default("intelligence-hybrid-v1")
  score           Int
  headline        String
  strongMatches   String   // JSON array of strings
  potentialGaps   String   // JSON array of strings
  relevantExp     String   // JSON array of strings
  explanation     String
  processingMs    Int      @default(0)
  createdAt       DateTime @default(now())
  updatedAt       DateTime @updatedAt

  @@unique([userId, targetType, targetId, contentHash])
  @@index([userId, targetType])
  @@index([targetId])
  @@index([contentHash])
  @@map("job_analysis_cache")
}

model JobSource {
  id                   String               @id @default(cuid())
  name                 String
  type                 String               // ATS, API, RSS, CAREER_PAGE, AGGREGATOR
  provider             String               // greenhouse, lever, ashby, jobaps, worktable
  baseUrl              String
  identifier           String?              // board slug or external id
  enabled              Boolean              @default(true)
  status               String               @default("ACTIVE") // ACTIVE, DEGRADED, FAILED, DISABLED, MAINTENANCE
  scheduleTier         String               @default("STANDARD") // HIGH_PRIORITY (6h), STANDARD (24h), LOW_PRIORITY (3d)
  rateLimitRpm         Int                  @default(60)
  lastRunAt            DateTime?
  lastSuccessAt        DateTime?
  lastFailureAt        DateTime?
  consecutiveFailures  Int                  @default(0)
  averageDurationMs    Int                  @default(0)
  jobsDiscoveredLastRun Int                 @default(0)
  jobsCreatedLastRun   Int                  @default(0)
  jobsUpdatedLastRun   Int                  @default(0)
  jobsExpiredLastRun   Int                  @default(0)
  lastError            String?
  createdAt            DateTime             @default(now())
  updatedAt            DateTime             @updatedAt
  executionLogs        SourceExecutionLog[]

  @@unique([provider, identifier])
  @@index([status])
  @@index([type])
  @@index([scheduleTier])
  @@map("job_sources")
}

model SourceExecutionLog {
  id                   String     @id @default(cuid())
  sourceId             String
  source               JobSource  @relation(fields: [sourceId], references: [id], onDelete: Cascade)
  status               String     // SUCCESS, DEGRADED, FAILED
  startedAt            DateTime   @default(now())
  completedAt          DateTime?
  durationMs           Int        @default(0)
  discoveredCount      Int        @default(0)
  createdCount         Int        @default(0)
  updatedCount         Int        @default(0)
  expiredCount         Int        @default(0)
  duplicateCount       Int        @default(0)
  errorMessage         String?
  diagnosticMetadata   String?    // JSON string of headers, status codes, payload sizes
  createdAt            DateTime   @default(now())

  @@index([sourceId])
  @@index([status])
  @@index([createdAt])
  @@map("source_execution_logs")
}

model BetaFeedback {
  id               String   @id @default(cuid())
  userId           String?
  userEmail        String?
  category         String   // BUG, UI_PROBLEM, SEARCH_PROBLEM, JOB_DATA_PROBLEM, FEATURE_REQUEST, OTHER
  description      String
  expectedBehavior String?
  actualBehavior   String?
  route            String?
  pageUrl          String?
  viewport         String?  // mobile, tablet, desktop
  browserInfo      String?
  createdAt        DateTime @default(now())

  @@index([category])
  @@index([createdAt])
  @@map("beta_feedback")
}

model BetaInvitation {
  id          String    @id @default(cuid())
  email       String    @unique
  tokenHash   String    @unique
  invitedBy   String?
  role        String    @default("BETA_TESTER") // BETA_TESTER, EMPLOYER, ADMIN
  acceptedAt  DateTime?
  lastActiveAt DateTime?
  expiresAt   DateTime
  createdAt   DateTime  @default(now())

  @@index([email])
  @@index([tokenHash])
  @@map("beta_invitations")
}