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

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

enum RawSegmentStatus {
  PENDING
  PROCESSED
  DISCARDED
}

enum CandidateSegmentStatus {
  PENDING_STT
  TRANSCRIBED
  FAILED
}

model Channel {
  id             String    @id @default(cuid())
  name           String
  youtubeHandle  String    @map("youtube_handle")
  channelId      String    @unique @map("channel_id")
  isActive       Boolean   @default(true) @map("is_active")
  lastCheckedAt  DateTime? @map("last_checked_at")
  createdAt      DateTime  @default(now()) @map("created_at")

  sessions StreamSession[]

  @@map("channels")
}

model StreamSession {
  id             String    @id @default(cuid())
  channelId      String    @map("channel_id")
  channel        Channel   @relation(fields: [channelId], references: [id])
  liveVideoId    String?   @map("live_video_id")
  startedAt      DateTime  @default(now()) @map("started_at")
  endedAt        DateTime? @map("ended_at")
  totalSegments  Int       @default(0) @map("total_segments")

  segments RawSegment[]

  @@map("stream_sessions")
}

model RawSegment {
  id         String           @id @default(cuid())
  sessionId  String           @map("session_id")
  session    StreamSession    @relation(fields: [sessionId], references: [id])
  filePath   String           @map("file_path")
  duration   Int
  startedAt  DateTime         @map("started_at")
  status     RawSegmentStatus @default(PENDING)
  createdAt  DateTime         @default(now()) @map("created_at")

  candidates CandidateSegment[]

  @@map("raw_segments")
}

model CandidateSegment {
  id               String                  @id @default(cuid())
  rawSegmentId     String                  @map("raw_segment_id")
  rawSegment       RawSegment              @relation(fields: [rawSegmentId], references: [id])
  startSec         Int                     @map("start_sec")
  endSec           Int                     @map("end_sec")
  audioPeakScore   Float?                  @map("audio_peak_score")
  chatVelocityScore Float?                 @map("chat_velocity_score")
  transcriptJson   Json?                   @map("transcript_json")
  status           CandidateSegmentStatus  @default(PENDING_STT)
  createdAt        DateTime                @default(now()) @map("created_at")

  @@map("candidate_segments")
}

model AppSetting {
  key       String   @id
  value     String
  updatedAt DateTime @updatedAt @map("updated_at")

  @@map("app_settings")
}

model User {
  id           String   @id @default(cuid())
  username     String   @unique
  passwordHash String   @map("password_hash")
  createdAt    DateTime @default(now()) @map("created_at")

  @@map("users")
}