// Teknav DB schema — Postgres 16 + Prisma 5
// Mirrors the shapes used by the legacy localStorage TeknavStore.
// Persian-FTS extras (tsvector + GIN index + diacritic-stripping fn) live in
//   prisma/migrations/00000000000001_persian_fts/migration.sql
// and are applied as a follow-up migration after the initial schema.

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

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

enum UserRole {
  admin
  editor
  writer
  reviewer
  reader
}

enum UserStatus {
  active
  suspended
  pending
}

enum NotificationType {
  comment
  comment_reply
  new_article
  review_approved
  review_revision
  review_rejected
  review_submitted
  system
}

enum ReviewStatus {
  pending
  revision_requested
  approved
  rejected
}

model User {
  id           String     @id @default(cuid())
  email        String     @unique
  phone        String?    @unique
  username     String?    @unique  // URL-safe slug, e.g. "coaxys"
  passwordHash String?
  name         String
  bio          String?    @db.VarChar(280)
  avatarUrl    String?
  emailVerifiedAt DateTime?
  phoneVerifiedAt DateTime?
  twoFactorEnabled Boolean @default(false)
  twoFactorMethod String?  @default("sms")
  membershipTier String    @default("free")
  membershipExpiresAt DateTime?
  role         UserRole   @default(reader)
  status       UserStatus @default(active)

  // Growth & Community
  streakCount  Int        @default(0)
  lastReadAt   DateTime?

  // OAuth — populated when the user signs in with Google/GitHub.
  oauthProvider String?  // 'google' | 'github'
  oauthSubject  String?  // provider-side user id

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

  passwordChangedAt DateTime?

  author       Author?
  corrections  ArticleCorrection[] @relation("ArticleCorrectionEditor")
  authoredArticles Article[]      @relation("ArticleCreatedBy")
  uploadedMedia MediaAsset[]      @relation("MediaUploadedBy")
  reactions    Reaction[]
  saved        SavedArticle[]
  activity     ActivityLog[]
  comments     Comment[]
  commentFlags CommentFlag[]
  readHistory  ReadHistory[]
  notifications Notification[]
  following    WriterFollow[] @relation("Follower")
  followers    WriterFollow[] @relation("Writer")
  topicFollows TopicFollow[]
  newsletterCampaigns NewsletterCampaign[]
  commentLikes CommentLike[]
  commentUpvotes CommentUpvote[]
  reviewAssignments ArticleReview[] @relation("ArticleReviewReviewer")
  qualityReviews Article[] @relation("ArticleQualityReviewer")
  readingLists ReadingList[]
  analyticsEvents AnalyticsEvent[]
  questions    Question[]
  answers      Answer[]
  clientErrors ClientError[]
  membershipPayments MembershipPayment[]
  pushSubscriptions       PushSubscription[]
  notificationPreferences NotificationPreference[]
  badges                  UserBadge[]
  revisionsAuthored       ArticleRevision[] @relation("ArticleRevisionSavedBy")
  wikiProposals           WikiProposal[]
  glossaryProposals       GlossaryProposal[]
  quizAttempts            QuizAttempt[]
  certifications          UserCertification[]
  companyClaims           CompanyClaim[]
  ownedCompany            CompanyProfile?    @relation("CompanyOwner")
  glossaryReviewed        GlossaryProposal[] @relation("GlossaryProposalReviewer")
  wikiReviewed            WikiProposal[]     @relation("WikiProposalReviewer")
  companyClaimsReviewed   CompanyClaim[]     @relation("CompanyClaimReviewer")

  @@unique([oauthProvider, oauthSubject])
  @@index([role, status])
}

model Author {
  id           String   @id @default(cuid())
  slug         String   @unique
  name         String
  specialty    String
  bio          String
  initials     String
  color        String
  verifiedExpert Boolean @default(false)
  verificationNote String?
  social       Json     @default("{}")
  articleCount Int      @default(0)
  user         User?    @relation(fields: [userId], references: [id], onDelete: SetNull)
  userId       String?  @unique
  articles     Article[]
}

model Category {
  id           String   @id @default(cuid())
  slug         String   @unique
  name         String
  description  String
  color        String
  diagram      String?
  articleCount Int      @default(0)
  articles     Article[]
}

model Tag {
  id       String       @id @default(cuid())
  name     String       @unique
  count    Int          @default(0)
  articles ArticleTag[]
}

// type/status kept as String (not enum) to preserve the Persian values used by the
// legacy frontend without round-tripping through enum maps. Validation is enforced
// at the API layer via Zod.
model Article {
  id          String         @id @default(cuid())
  slug        String         @unique
  title       String
  subtitle    String?
  summary     String
  content     String
  type        String
  status      String         @default("پیش‌نویس")
  readTime    Int            @default(5)
  views       Int            @default(0)
  reactions   Int            @default(0)
  featured    Boolean        @default(false)
  sponsored   Boolean        @default(false)
  premiumOnly Boolean        @default(false)
  diagram     String?
  metaDescription String? @db.VarChar(300)
  keywords    String[]    @default([])
  ogTitle     String?     @db.VarChar(200)
  ogDescription String?   @db.VarChar(300)
  ogImage     String?
  canonicalPath String?
  dateModified DateTime?
  factCheckedAt DateTime?
  reviewedBy   User?      @relation("ArticleQualityReviewer", fields: [reviewedById], references: [id], onDelete: SetNull)
  reviewedById String?
  sourceNotes  String?
  contentFreshnessStatus String @default("current")
  correctionNotice String?

  category    Category       @relation(fields: [categoryId], references: [id])
  categoryId  String

  author      Author         @relation(fields: [authorId], references: [id])
  authorId    String

  createdBy   User?          @relation("ArticleCreatedBy", fields: [createdById], references: [id], onDelete: SetNull)
  createdById String?

  tags        ArticleTag[]
  reactionLog Reaction[]
  savedBy     SavedArticle[]
  comments    Comment[]
  readHistory ReadHistory[]
  viewLogs    ArticleViewLog[]
  seriesLinks SeriesArticle[]
  review      ArticleReview?
  readingListItems ReadingListItem[]
  analyticsEvents AnalyticsEvent[]
  corrections ArticleCorrection[]
  questions   Question[]
  revisions   ArticleRevision[]
  wikiProposals WikiProposal[]
  articleModules ArticleModule[]
  embeddings    ArticleEmbedding?
  search_tsv    Unsupported("tsvector")?

  publishedAt DateTime?
  scheduledAt DateTime?
  deletedAt   DateTime?
  createdAt   DateTime       @default(now())
  updatedAt   DateTime       @updatedAt

  @@index([status, publishedAt(sort: Desc)])
  @@index([status, scheduledAt])
  @@index([categoryId, status])
  @@index([authorId])
  @@index([reviewedById])
  @@index([featured, publishedAt(sort: Desc)])
  @@index([sponsored, publishedAt(sort: Desc)])
  @@index([premiumOnly, publishedAt(sort: Desc)])
  @@index([publishedAt(sort: Desc)])
  @@index([deletedAt])
}

model JobListing {
  id          String   @id @default(cuid())
  company    String
  title       String
  location    String
  remote      Boolean  @default(true)
  url         String?
  contactEmail String?
  description  String    @db.VarChar(3000)
  status       String    @default("pending")
  featuredUntil DateTime?
  createdAt    DateTime  @default(now())
  updatedAt    DateTime  @updatedAt

  @@index([status, createdAt(sort: Desc)])
}

model Course {
  id          String   @id @default(cuid())
  slug        String   @unique
  title       String
  summary     String
  level       String
  price       Int      @default(0)
  status      String   @default("published")
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  @@index([status, createdAt(sort: Desc)])
}

model ArticleCorrection {
  id        String   @id @default(cuid())
  article   Article  @relation(fields: [articleId], references: [id], onDelete: Cascade)
  articleId String
  note      String   @db.VarChar(1000)
  editor    User?    @relation("ArticleCorrectionEditor", fields: [editorId], references: [id], onDelete: SetNull)
  editorId  String?
  createdAt DateTime @default(now())

  @@index([articleId, createdAt(sort: Desc)])
  @@index([createdAt(sort: Desc)])
}

model MediaAsset {
  id           String   @id @default(cuid())
  url          String   @unique
  path         String   @unique
  filename     String
  mimeType     String
  sizeBytes    Int
  width        Int?
  height       Int?
  uploadedBy   User?    @relation("MediaUploadedBy", fields: [uploadedById], references: [id], onDelete: SetNull)
  uploadedById String?
  createdAt    DateTime @default(now())

  @@index([createdAt(sort: Desc)])
  @@index([mimeType])
  @@index([uploadedById, createdAt(sort: Desc)])
}

model ArticleTag {
  article   Article @relation(fields: [articleId], references: [id], onDelete: Cascade)
  articleId String
  tag       Tag     @relation(fields: [tagId], references: [id], onDelete: Cascade)
  tagId     String

  @@id([articleId, tagId])
  @@index([tagId])
}

model Reaction {
  user      User    @relation(fields: [userId], references: [id], onDelete: Cascade)
  userId    String
  article   Article @relation(fields: [articleId], references: [id], onDelete: Cascade)
  articleId String
  type      String  // insightful | curious | applause
  createdAt DateTime @default(now())

  @@id([userId, articleId, type])
  @@index([articleId])
}

model SavedArticle {
  user      User    @relation(fields: [userId], references: [id], onDelete: Cascade)
  userId    String
  article   Article @relation(fields: [articleId], references: [id], onDelete: Cascade)
  articleId String
  savedAt   DateTime @default(now())

  @@id([userId, articleId])
  @@index([userId, savedAt(sort: Desc)])
}

model Comment {
  id        String    @id @default(cuid())
  article   Article   @relation(fields: [articleId], references: [id], onDelete: Cascade)
  articleId String
  author    User      @relation(fields: [authorId], references: [id], onDelete: Cascade)
  authorId  String
  replyTo   Comment?  @relation("CommentReplies", fields: [replyToId], references: [id], onDelete: Cascade)
  replyToId String?
  replies   Comment[] @relation("CommentReplies")
  body      String    @db.VarChar(1000)
  flagCount Int       @default(0)
  likeCount Int       @default(0)
  upvoteCount Int     @default(0)
  flagged   Boolean   @default(false)
  deletedAt DateTime?
  createdAt DateTime  @default(now())
  updatedAt DateTime  @updatedAt
  flags     CommentFlag[]
  likes     CommentLike[]
  upvotes   CommentUpvote[]

  @@index([articleId, upvoteCount(sort: Desc), createdAt(sort: Desc)])
  @@index([authorId, createdAt(sort: Desc)])
  @@index([flagged, createdAt(sort: Desc)])
  @@index([deletedAt])
}

model CommentFlag {
  id        String   @id @default(cuid())
  comment   Comment  @relation(fields: [commentId], references: [id], onDelete: Cascade)
  commentId String
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  userId    String
  createdAt DateTime @default(now())

  @@unique([commentId, userId])
  @@index([userId, createdAt(sort: Desc)])
}

model CommentLike {
  id        String   @id @default(cuid())
  comment   Comment  @relation(fields: [commentId], references: [id], onDelete: Cascade)
  commentId String
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  userId    String
  createdAt DateTime @default(now())

  @@unique([commentId, userId])
  @@index([userId, createdAt(sort: Desc)])
}

model CommentUpvote {
  id        String   @id @default(cuid())
  comment   Comment  @relation(fields: [commentId], references: [id], onDelete: Cascade)
  commentId String
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  userId    String
  createdAt DateTime @default(now())

  @@unique([commentId, userId])
}

model ArticleViewLog {
  id        String   @id @default(cuid())
  article   Article  @relation(fields: [articleId], references: [id], onDelete: Cascade)
  articleId String
  date      DateTime @db.Date
  views     Int      @default(0)

  @@unique([articleId, date])
  @@index([date])
}

model ReadHistory {
  id        String   @id @default(cuid())
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  userId    String
  article   Article  @relation(fields: [articleId], references: [id], onDelete: Cascade)
  articleId String
  progress  Float    @default(0) // 0 to 1
  readAt    DateTime @default(now())

  @@unique([userId, articleId])
  @@index([userId, readAt(sort: Desc)])
}

model Question {
  id        String   @id @default(cuid())
  article   Article  @relation(fields: [articleId], references: [id], onDelete: Cascade)
  articleId String
  author    User     @relation(fields: [authorId], references: [id], onDelete: Cascade)
  authorId  String
  body      String   @db.VarChar(1000)
  createdAt DateTime @default(now())
  answers   Answer[]

  @@index([articleId, createdAt(sort: Desc)])
}

model Answer {
  id         String   @id @default(cuid())
  question   Question @relation(fields: [questionId], references: [id], onDelete: Cascade)
  questionId String
  author     User     @relation(fields: [authorId], references: [id], onDelete: Cascade)
  authorId   String
  body       String   @db.VarChar(1000)
  createdAt  DateTime @default(now())

  @@index([questionId, createdAt(sort: Desc)])
}

model Notification {
  id        String           @id @default(cuid())
  user      User             @relation(fields: [userId], references: [id], onDelete: Cascade)
  userId    String
  type      NotificationType
  payload   Json
  read      Boolean          @default(false)
  createdAt DateTime         @default(now())

  @@index([userId, read, createdAt(sort: Desc)])
  @@index([createdAt(sort: Desc)])
}

model WriterFollow {
  id         String   @id @default(cuid())
  follower   User     @relation("Follower", fields: [followerId], references: [id], onDelete: Cascade)
  followerId String
  writer     User     @relation("Writer", fields: [writerId], references: [id], onDelete: Cascade)
  writerId   String
  createdAt  DateTime @default(now())

  @@unique([followerId, writerId])
  @@index([writerId, createdAt(sort: Desc)])
}

model TopicFollow {
  id        String   @id @default(cuid())
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  userId    String
  topic     String
  createdAt DateTime @default(now())

  @@unique([userId, topic])
  @@index([topic, createdAt(sort: Desc)])
}

model NewsletterSubscriber {
  id        String   @id @default(cuid())
  email     String   @unique
  unsubscribeToken String @unique @default(cuid())
  source    String?
  doubleOptInToken String? @unique
  confirmedAt DateTime?
  createdAt DateTime @default(now())
}

model AnalyticsEvent {
  id        String   @id @default(cuid())
  type      String
  user      User?    @relation(fields: [userId], references: [id], onDelete: SetNull)
  userId    String?
  article   Article? @relation(fields: [articleId], references: [id], onDelete: SetNull)
  articleId String?
  topic     String?
  metadata  Json     @default("{}")
  createdAt DateTime @default(now())

  @@index([type, createdAt(sort: Desc)])
  @@index([userId, createdAt(sort: Desc)])
  @@index([articleId, createdAt(sort: Desc)])
  @@index([topic, createdAt(sort: Desc)])
}

model NewsletterCampaign {
  id          String    @id @default(cuid())
  subject     String    @db.VarChar(200)
  slug        String?   @unique
  bodyHtml    String
  sentAt      DateTime?
  recipientCount Int    @default(0)
  createdBy   User      @relation(fields: [createdById], references: [id])
  createdById String
  createdAt   DateTime  @default(now())

  @@index([sentAt, createdAt])
}

model ArticleSeries {
  id          String          @id @default(cuid())
  title       String          @db.VarChar(200)
  slug        String          @unique
  description String?         @db.VarChar(500)
  coverImage  String?
  createdAt   DateTime        @default(now())
  articles    SeriesArticle[]
}

model SeriesArticle {
  id        String        @id @default(cuid())
  series    ArticleSeries @relation(fields: [seriesId], references: [id], onDelete: Cascade)
  seriesId  String
  article   Article       @relation(fields: [articleId], references: [id], onDelete: Cascade)
  articleId String
  position  Int

  @@unique([seriesId, articleId])
  @@unique([seriesId, position])
  @@index([articleId])
}

model ArticleReview {
  id        String       @id @default(cuid())
  article   Article      @relation(fields: [articleId], references: [id], onDelete: Cascade)
  articleId String       @unique
  reviewer  User?        @relation("ArticleReviewReviewer", fields: [reviewerId], references: [id])
  reviewerId String?
  status    ReviewStatus @default(pending)
  note      String?      @db.VarChar(1000)
  createdAt DateTime     @default(now())
  updatedAt DateTime     @updatedAt
}

model ReadingList {
  id        String            @id @default(cuid())
  user      User              @relation(fields: [userId], references: [id], onDelete: Cascade)
  userId    String
  name      String            @db.VarChar(80)
  isDefault Boolean           @default(false)
  createdAt DateTime          @default(now())
  items     ReadingListItem[]

  @@unique([userId, name])
  @@index([userId, createdAt])
}

model ReadingListItem {
  id            String      @id @default(cuid())
  list          ReadingList @relation(fields: [listId], references: [id], onDelete: Cascade)
  listId        String
  article       Article     @relation(fields: [articleId], references: [id], onDelete: Cascade)
  articleId     String
  position      Int
  addedAt       DateTime    @default(now())

  @@unique([listId, articleId])
  @@index([articleId])
}

model ActivityLog {
  id        String   @id @default(cuid())
  user      User?    @relation(fields: [userId], references: [id], onDelete: SetNull)
  userId    String?
  action    String
  target    String
  type      String
  createdAt DateTime @default(now())

  @@index([createdAt(sort: Desc)])
  @@index([userId, createdAt(sort: Desc)])
}

model ClientError {
  id        String   @id @default(cuid())
  message   String   @db.VarChar(1000)
  stack     String?  @db.VarChar(5000)
  url       String?  @db.VarChar(500)
  userAgent String?  @db.VarChar(500)
  user      User?    @relation(fields: [userId], references: [id], onDelete: SetNull)
  userId    String?
  createdAt DateTime @default(now())

  @@index([createdAt(sort: Desc)])
  @@index([message, createdAt(sort: Desc)])
}

model MembershipPayment {
  id            String   @id @default(cuid())
  user          User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  userId        String
  authority     String   @unique
  amount        Int
  currency      String   @default("IRR")
  status        String   @default("pending")
  refId         String?
  tier          String   @default("premium")
  durationDays  Int      @default(365)
  createdAt     DateTime @default(now())
  updatedAt     DateTime @updatedAt

  @@index([userId, createdAt(sort: Desc)])
  @@index([authority])
  @@index([status, createdAt(sort: Desc)])
}

model PushSubscription {
  id        String   @id @default(cuid())
  user      User?    @relation(fields: [userId], references: [id], onDelete: Cascade)
  userId    String?
  endpoint  String   @unique
  auth      String
  p256dh    String
  userAgent String?
  topics    String[] @default([])
  createdAt DateTime @default(now())

  @@index([userId])
}

model NotificationPreference {
  id        String  @id @default(cuid())
  user      User    @relation(fields: [userId], references: [id], onDelete: Cascade)
  userId    String
  eventType String
  channel   String
  enabled   Boolean @default(true)

  @@unique([userId, eventType, channel])
  @@index([userId])
}

model UserBadge {
  id        String   @id @default(cuid())
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  userId    String
  badgeType String
  earnedAt  DateTime @default(now())
  metadata  Json     @default("{}")

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

model ArticleRevision {
  id        String   @id @default(cuid())
  article   Article  @relation(fields: [articleId], references: [id], onDelete: Cascade)
  articleId String
  savedBy   User?    @relation("ArticleRevisionSavedBy", fields: [savedById], references: [id], onDelete: SetNull)
  savedById String?
  title     String
  content   String
  summary   String
  status    String
  createdAt DateTime @default(now())

  @@index([articleId, createdAt(sort: Desc)])
}

// Phase 14 Schema Extensions

// 1. Wiki / Glossary Proposals
model WikiProposal {
  id              String       @id @default(cuid())
  articleId       String
  article         Article      @relation(fields: [articleId], references: [id], onDelete: Cascade)
  title           String
  content         String
  summary         String
  status          ReviewStatus @default(pending)
  rejectionReason String?
  suggestedById   String
  suggestedBy     User         @relation(fields: [suggestedById], references: [id], onDelete: Cascade)
  reviewedById    String?
  reviewedBy      User?        @relation("WikiProposalReviewer", fields: [reviewedById], references: [id], onDelete: SetNull)
  createdAt       DateTime     @default(now())
  updatedAt       DateTime     @updatedAt

  @@index([articleId])
}

model GlossaryProposal {
  id              String       @id @default(cuid())
  term            String
  definition      String
  sameAs          String[]
  status          ReviewStatus @default(pending)
  rejectionReason String?
  suggestedById   String
  suggestedBy     User         @relation(fields: [suggestedById], references: [id], onDelete: Cascade)
  reviewedById    String?
  reviewedBy      User?        @relation("GlossaryProposalReviewer", fields: [reviewedById], references: [id], onDelete: SetNull)
  createdAt       DateTime     @default(now())
  updatedAt       DateTime     @updatedAt
}

// 2. Learning Paths & LMS
model LearningPath {
  id          String           @id @default(cuid())
  slug        String           @unique
  title       String           @db.VarChar(200)
  description String
  color       String
  modules     LearningModule[]
  createdAt   DateTime         @default(now())
  updatedAt   DateTime         @updatedAt
}

model LearningModule {
  id        String          @id @default(cuid())
  pathId    String
  path      LearningPath    @relation(fields: [pathId], references: [id], onDelete: Cascade)
  title     String
  order     Int
  articles  ArticleModule[]
  quizzes   Quiz[]
}

model ArticleModule {
  id         String         @id @default(cuid())
  moduleId   String
  module     LearningModule @relation(fields: [moduleId], references: [id], onDelete: Cascade)
  articleId  String
  article    Article        @relation(fields: [articleId], references: [id], onDelete: Cascade)
  order      Int
}

model Quiz {
  id        String         @id @default(cuid())
  moduleId  String
  module    LearningModule @relation(fields: [moduleId], references: [id], onDelete: Cascade)
  questions QuizQuestion[]
  attempts  QuizAttempt[]
}

model QuizQuestion {
  id            String   @id @default(cuid())
  quizId        String
  quiz          Quiz     @relation(fields: [quizId], references: [id], onDelete: Cascade)
  questionText  String
  options       String[]
  correctOption Int
}

model QuizAttempt {
  id        String   @id @default(cuid())
  quizId    String
  quiz      Quiz     @relation(fields: [quizId], references: [id], onDelete: Cascade)
  userId    String
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  score     Int
  passed    Boolean
  createdAt DateTime @default(now())
}

model UserCertification {
  id             String   @id @default(cuid())
  userId         String
  user           User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  pathId         String
  certificateUrl String?
  createdAt      DateTime @default(now())
}

// 3. Farsi Tech & Startup Directory
model CompanyProfile {
  id          String         @id @default(cuid())
  slug        String         @unique
  name        String
  description String
  logoUrl     String?
  websiteUrl  String?
  techStack   String[]
  verified    Boolean        @default(false)
  claimedById String?        @unique
  claimedBy   User?          @relation("CompanyOwner", fields: [claimedById], references: [id], onDelete: SetNull)
  claims      CompanyClaim[]
  createdAt   DateTime       @default(now())
  updatedAt   DateTime       @updatedAt
}

model CompanyClaim {
  id             String         @id @default(cuid())
  companyId      String
  company        CompanyProfile @relation(fields: [companyId], references: [id], onDelete: Cascade)
  userId         String
  user           User           @relation(fields: [userId], references: [id], onDelete: Cascade)
  documentsUrl   String?
  status         ReviewStatus   @default(pending)
  reviewedById   String?
  reviewedBy     User?          @relation("CompanyClaimReviewer", fields: [reviewedById], references: [id], onDelete: SetNull)
  createdAt      DateTime       @default(now())
  updatedAt      DateTime       @updatedAt
}

// 4. Vector Embeddings
model ArticleEmbedding {
  id        String   @id @default(cuid())
  article   Article  @relation(fields: [articleId], references: [id], onDelete: Cascade)
  articleId String   @unique
  embedding Unsupported("vector(1536)")
}