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

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

// ---------------------------------------------------------------------------
// Synonym — embedded document inside Verse
// ---------------------------------------------------------------------------
type Synonym {
  word     String
  meanings String[]
}

// ---------------------------------------------------------------------------
// Verse — unified model for BG, SB, and CC verses
//
// book: "bg" | "sb" | "cc"
// division: null for BG, canto number string for SB ("1"-"10"),
//           līlā key for CC ("adi", "madhya", "antya")
// chapter: chapter number
// verse: verse number (first verse number for multi-verse entries)
// verseEnd: last verse number for multi-verse entries (e.g. 18 for "16-18")
// reference: display reference string (e.g. "Bg 1.1", "SB 1.1.1", "Cc Ādi 1.1")
// ---------------------------------------------------------------------------
model Verse {
  id              String    @id @default(auto()) @map("_id") @db.ObjectId
  book            String    // "bg" | "sb" | "cc"
  division        String?   // null for BG; canto for SB; lila for CC
  chapter         Int
  verse           Int
  verseEnd        Int?
  reference       String
  bookTitle       String
  devanagari      String
  bengali         String?   // only CC has Bengali
  transliteration String
  synonyms        Synonym[]
  translation     String
  purport         String[]

  @@unique([book, division, chapter, verse])
  @@index([book])
  @@index([book, division])
  @@index([book, division, chapter])
  @@map("verses")
}

// ---------------------------------------------------------------------------
// BookMeta — stores the intro.json data for each book
//
// The `data` field stores the entire intro JSON as a flexible JSON blob,
// since BG/SB/CC each have different structures (chapters vs cantos vs lilas).
// ---------------------------------------------------------------------------
model BookMeta {
  id   String @id @default(auto()) @map("_id") @db.ObjectId
  book String @unique // "bg" | "sb" | "cc"
  data Json

  @@map("book_meta")
}

// ---------------------------------------------------------------------------
// ProseChapter — for prose books like Kṛṣṇa Book (no verse structure)
//
// book: "kb"
// volume: volume number (1 or 2 for KB)
// chapter: chapter number within the volume
// title: chapter title
// type: "chapter" | "intro-segment"
// slug: URL-friendly identifier (e.g. "01", "preface", "words-from-apple")
// order: sort order (chapter number for chapters, custom for intro segments)
// paragraphs: array of HTML paragraph strings
// ---------------------------------------------------------------------------
model ProseChapter {
  id         String   @id @default(auto()) @map("_id") @db.ObjectId
  book       String   // "kb"
  volume     Int
  chapter    Int?     // null for intro segments
  title      String
  type       String   // "chapter" | "intro-segment"
  slug       String
  order      Int
  paragraphs String[]

  @@unique([book, volume, slug])
  @@index([book])
  @@index([book, volume])
  @@index([book, volume, type])
  @@map("prose_chapters")
}

// ---------------------------------------------------------------------------
// Essay — standalone essays (not part of any book's chapter structure)
//
// slug: URL-friendly identifier (e.g. "krishna-reservoir-of-pleasure")
// title: essay title
// author: author name
// year: publication year
// group: optional grouping key (e.g. "two-essays" for essays published together)
// order: sort order within a group
// paragraphs: array of HTML paragraph strings
// ---------------------------------------------------------------------------
model Essay {
  id         String   @id @default(auto()) @map("_id") @db.ObjectId
  slug       String   @unique
  title      String
  author     String
  year       Int?
  group      String?
  order      Int
  paragraphs String[]

  @@index([group])
  @@map("essays")
}

// ---------------------------------------------------------------------------
// OtherDocumentMeta — metadata for miscellaneous documents
//
// book: slug identifier (e.g. "analysis-bg", "real-peace-formula")
// data: JSON blob containing title, author, year, description, chapters list
// ---------------------------------------------------------------------------
model OtherDocumentMeta {
  id   String @id @default(auto()) @map("_id") @db.ObjectId
  book String @unique
  data Json

  @@map("other_document_meta")
}

// ---------------------------------------------------------------------------
// OtherDocumentChapter — chapters within other documents
//
// book: slug identifier matching OtherDocumentMeta.book
// chapter: chapter number
// title: chapter title
// type: "chapter"
// slug: URL-friendly identifier (chapter number as string)
// order: sort order
// paragraphs: array of HTML paragraph strings
// ---------------------------------------------------------------------------
model OtherDocumentChapter {
  id         String   @id @default(auto()) @map("_id") @db.ObjectId
  book       String
  chapter    Int
  title      String
  type       String
  slug       String
  order      Int
  paragraphs String[]

  @@unique([book, slug])
  @@index([book])
  @@map("other_document_chapters")
}

// ---------------------------------------------------------------------------
// JournalMeta — metadata for journals (Jaladuta Diary, The Beginning, etc.)
//
// book: slug identifier (e.g. "jaladuta-diary", "the-beginning")
// data: JSON blob containing title, author, year, description, chapters list
// ---------------------------------------------------------------------------
model JournalMeta {
  id   String @id @default(auto()) @map("_id") @db.ObjectId
  book String @unique
  data Json

  @@map("journal_meta")
}

// ---------------------------------------------------------------------------
// JournalChapter — chapters within journals
//
// book: slug identifier matching JournalMeta.book
// chapter: chapter number
// title: chapter title
// type: "chapter" | "preface" | "introduction"
// slug: URL-friendly identifier (chapter number as string)
// order: sort order
// paragraphs: array of HTML paragraph strings
// ---------------------------------------------------------------------------
model JournalChapter {
  id         String   @id @default(auto()) @map("_id") @db.ObjectId
  book       String
  chapter    Int
  title      String
  type       String
  slug       String
  order      Int
  paragraphs String[]

  @@unique([book, slug])
  @@index([book])
  @@map("journal_chapters")
}

// ---------------------------------------------------------------------------
// MagazineMeta — metadata for magazines (Back to Godhead, etc.)
//
// book: slug identifier (e.g. "btg")
// data: JSON blob containing title, author, description, volumes/issues list
// ---------------------------------------------------------------------------
model MagazineMeta {
  id   String @id @default(auto()) @map("_id") @db.ObjectId
  book String @unique
  data Json

  @@map("magazine_meta")
}

// ---------------------------------------------------------------------------
// MagazineIssue — individual issues within a magazine
//
// book: slug identifier matching MagazineMeta.book
// volume: volume number
// part: part/issue number within the volume
// title: display title (e.g. "Volume 3, Part 5, May 5, 1956")
// slug: URL-friendly identifier (e.g. "v3-p5")
// order: sort order
// paragraphs: array of HTML paragraph strings (all articles concatenated)
// ---------------------------------------------------------------------------
model MagazineIssue {
  id             String   @id @default(auto()) @map("_id") @db.ObjectId
  book           String
  volume         Int
  part           Int
  title          String
  slug           String
  order          Int
  paragraphs     String[]
  paragraphsJson String?

  @@unique([book, slug])
  @@index([book])
  @@index([book, volume])
  @@map("magazine_issues")
}

// ---------------------------------------------------------------------------
// GlossaryEntry — individual glossary term + definition
// ---------------------------------------------------------------------------
// ---------------------------------------------------------------------------
// Letter — individual letters written by Śrīla Prabhupāda
//
// slug: unique identifier (e.g. "47-07-12-mahatma-gandhi", "68-01-15-hayagriva")
// recipients: array of individual recipient names (split from comma-separated)
// recipientDisplay: original recipient string for display (e.g. "Mukunda, Janaki")
// date: date string as written (e.g. "12 July, 1947")
// dateRef: reference code (e.g. "47-07-12")
// year: extracted year number for filtering/grouping
// month: extracted month number (1-12) for filtering
// day: extracted day number for filtering
// location: city/place where the letter was written
// salutation: the "Dear..." line
// paragraphs: array of HTML paragraph strings (letter body)
// ---------------------------------------------------------------------------
model Letter {
  id               String   @id @default(auto()) @map("_id") @db.ObjectId
  slug             String   @unique
  recipients       String[]
  recipientDisplay String
  date             String?
  dateRef          String?
  year             Int?
  month            Int?
  day              Int?
  location         String?
  salutation       String?
  paragraphs       String[]

  @@index([year])
  @@index([recipients])
  @@index([location])
  @@index([year, month])
  @@map("letters")
}

model GlossaryEntry {
  id             String @id @default(auto()) @map("_id") @db.ObjectId
  term           String
  definition     String
  definitionHtml String

  @@unique([term])
  @@map("glossary")
}