generator client {
  provider        = "prisma-client-js"
  previewFeatures = ["postgresqlExtensions"]
}

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

model ExternalLink {
  id        String   @id @default(cuid())
  type      LinkType
  url       String
  title     String?
  projectId String
  project   Project  @relation(fields: [projectId], references: [id], onDelete: Cascade)

  @@unique([projectId, url])
  @@index([projectId], map: "idx_link_projectId")
  @@index([type], map: "idx_link_type")
  @@index([type, url], map: "idx_link_type_url")
  @@index([url], map: "idx_link_url")
  @@map("external_links")
}

model ProjectDiscoveryTask {
  id                 String     @id @default(cuid())
  status             TaskStatus @default(PENDING)
  sourceUrl          String
  sourceType         String     @default("manual")
  explorationData    Json?
  explorationSummary String?
  errorMessage       String?
  retryCount         Int        @default(0)
  lastRetryAt        DateTime?
  projectId          String?
  createdAt          DateTime   @default(now())
  startedAt          DateTime?
  completedAt        DateTime?
  updatedAt          DateTime   @updatedAt
  project            Project?   @relation(fields: [projectId], references: [id])

  @@index([projectId], map: "idx_task_project_id")
  @@index([sourceUrl], map: "idx_task_source_url")
  @@index([status, createdAt], map: "idx_task_status_created")
  @@map("project_discovery_tasks")
}

model ProjectTag {
  projectId String
  tagId     String
  project   Project  @relation(fields: [projectId], references: [id], onDelete: Cascade)
  tag       Tag      @relation(fields: [tagId], references: [id], onDelete: Cascade)

  @@id([projectId, tagId])
  @@index([tagId])
  @@map("project_tags")
}

model Project {
  id                      String                    @id @default(cuid())
  name                    String
  nameEn                  String?
  slug                    String                    @unique
  description             String
  descriptionEn           String?
  content                 String?
  contentEn               String?
  githubStars             Int                       @default(0)
  githubStarsUpdatedAt    DateTime?
  status                  ProjectStatus             @default(ACTIVE)
  source                  String?
  createdAt               DateTime                  @default(now())
  updatedAt               DateTime                  @updatedAt
  embedding               Unsupported("vector")?
  embeddingUpdatedAt      DateTime?
  links                   ExternalLink[]
  projectDiscoveryTasks   ProjectDiscoveryTask[]
  tags                    ProjectTag[]

  @@index([embedding], map: "idx_project_embedding_cosine")
  @@index([slug], map: "idx_project_slug")
  @@index([status, createdAt], map: "idx_project_status_createdAt")
  @@index([status, githubStars], map: "idx_project_status_github_stars")
  @@map("projects")
}

model Tag {
  id           String         @id @default(cuid())
  name         String         @unique
  nameEn       String?
  slug         String         @unique
  category     TagCategory    @default(FREE_TAG)
  createdAt    DateTime       @default(now())
  projects     ProjectTag[]

  @@index([category], map: "idx_tag_category")
  @@index([slug], map: "idx_tag_slug")
  @@map("tags")
}

model Signal {
  id          String   @id @default(cuid())
  source      String
  sourceUrl   String
  title       String
  titleEn     String?
  summary     String
  summaryEn   String?
  topic       String?
  topicEn     String?
  tags        Json
  sections    Json
  engagement  Int      @default(0)
  hotScore    Int      @default(0)
  isHot       Boolean  @default(false)
  publishedAt DateTime
  isActive    Boolean  @default(true)
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  @@unique([source, sourceUrl], map: "uniq_signal_source_url")
  @@index([source, publishedAt], map: "idx_signal_source_published")
  @@index([isActive, publishedAt], map: "idx_signal_active_published")
  @@index([isActive, isHot, hotScore, publishedAt], map: "idx_signal_active_hot_sort")
  @@index([engagement], map: "idx_signal_engagement")
  @@index([hotScore], map: "idx_signal_hot_score")
  @@map("signals")
}

enum LinkType {
  WEBSITE
  GITHUB
  HUGGINGFACE
  PAPER
}

enum ProjectStatus {
  ACTIVE
  ARCHIVED
}

enum TaskStatus {
  PENDING
  IN_PROGRESS
  COMPLETED
  FAILED
}

enum TagCategory {
  FIXED_PROJECT_TYPE
  TECH_STACK
  AI_PARADIGM
  PROTOCOL_INTERFACE
  PRODUCT_FORM
  DOMAIN_SCENARIO
  RESOURCE_TYPE
  FREE_TAG
}