// MapleBrief — database schema
// SQLite by default for zero-config local dev. To switch provider:
//   1. change `provider` in datasource below
//   2. update DATABASE_URL in .env
//   3. run `prisma migrate dev` (see README)

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

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

// A configured news source (RSS/Atom feed).
model Feed {
  id            String    @id @default(cuid())
  name          String    @unique
  url           String    @unique
  slug          String
  category      String    @default("news")
  enabled       Boolean   @default(true)
  lastFetchedAt DateTime?
  articles      Article[]
  createdAt     DateTime  @default(now())
  updatedAt     DateTime  @updatedAt
}

// A single synthesized news brief, built from one or more source stories.
model Article {
  id            String    @id @default(cuid())
  feedId        String?
  feed          Feed?     @relation(fields: [feedId], references: [id], onDelete: SetNull)

  // Identity / dedup
  guid          String?   @unique            // feed item guid (primary dedup key)
  dedupKey      String                         // sha1 of normalized title (near-dup key)
  sourceUrl     String                         // original story URL (outbound link)
  canonicalUrl  String    @unique              // our canonical URL for this brief
  siteName      String                         // originating publisher, e.g. "CBC News"

  // Source metadata
  title         String                         // original headline (kept for reference)
  slug          String    @unique
  category      String    @default("news")     // mapped from the feed category
  author        String?
  publishedAt   DateTime?
  image         String?                        // original thumbnail URL
  sources       String?                        // JSON string[] of contributing publisher names

  // Original content (kept for the "editor's notes" reference, NOT shown)
  originalText  String?

  // Synthesized (original) output produced by the LLM
  headline      String?                        // rewritten original headline
  body          String?                        // 3 paragraphs, \n\n separated
  takeaways     String?                        // JSON string[] of key takeaways
  tags          String?                        // JSON string[]
  llmProvider   String?                        // provider that produced this brief
  synthesizedAt DateTime?
  status        String    @default("fetched")  // fetched | synthesized | failed

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

  @@index([category, publishedAt])
  @@index([status, publishedAt])
  @@index([dedupKey])
}

// Runtime configuration. The /admin/settings UI writes here; env vars act as
// fallbacks when a key is absent so the app boots with zero configuration.
model Setting {
  key       String   @id
  value     String
  isSecret  Boolean  @default(false)
  updatedAt DateTime @updatedAt
}