finance-app/prisma/schema.prisma

generator client {
  provider = "prisma-client"
  output   = "../src/generated/prisma"
}

datasource db {
  provider = "postgresql"
}

model transaction_overrides {
  id                  Int       @id @default(autoincrement())
  transaction_id      Int       @unique
  merchant_normalized String?
  category_override   String?
  notes               String?
  my_share_percent    Decimal?  @db.Decimal(5, 2)
  updated_at          DateTime  @default(now()) @updatedAt
}

model participants {
  id                    Int                     @id @default(autoincrement())
  name                  String                  @unique
  email                 String?                 @unique
  created_at            DateTime                @default(now())
  splits                transaction_splits[]
  account_owner_mappings account_owner_mappings[]
  payments_sent         split_payments[]         @relation("payments_from")
  payments_received     split_payments[]         @relation("payments_to")
}

model account_owner_mappings {
  id             Int          @id @default(autoincrement())
  bank_name      String
  account_number String
  owner_id       Int
  created_at     DateTime     @default(now())
  owner          participants @relation(fields: [owner_id], references: [id])

  @@unique([bank_name, account_number])
}

model transaction_splits {
  id             Int          @id @default(autoincrement())
  transaction_id Int
  participant_id Int
  share_percent  Decimal      @db.Decimal(5, 2)
  settled        Boolean      @default(false)
  settled_at     DateTime?
  created_at     DateTime     @default(now())
  participant    participants @relation(fields: [participant_id], references: [id])

  @@unique([transaction_id, participant_id])
}

model split_payments {
  id                    Int           @id @default(autoincrement())
  from_participant_id   Int
  to_participant_id     Int
  amount                Decimal       @db.Decimal(10, 2)
  payment_date          DateTime      @db.Date
  notes                 String?
  linked_transaction_id Int?
  created_at            DateTime      @default(now())
  from_participant      participants  @relation("payments_from", fields: [from_participant_id], references: [id])
  to_participant        participants  @relation("payments_to", fields: [to_participant_id], references: [id])
}

model tags {
  id               Int                @id @default(autoincrement())
  name             String             @unique
  color            String             @default("#6366f1")
  created_at       DateTime           @default(now())
  transaction_tags transaction_tags[]
}

model transaction_tags {
  transaction_id Int
  tag_id         Int
  created_at     DateTime @default(now())
  tag            tags     @relation(fields: [tag_id], references: [id], onDelete: Cascade)

  @@id([transaction_id, tag_id])
}

model rules {
  id         Int      @id @default(autoincrement())
  owner_id   Int
  name       String
  conditions Json     @default("[]")
  actions    Json     @default("{}")
  enabled    Boolean  @default(true)
  priority   Int      @default(0)
  created_at DateTime @default(now())
  updated_at DateTime @default(now()) @updatedAt
}

model budgets {
  id           Int      @id @default(autoincrement())
  owner_id     Int
  category     String
  month        DateTime @db.Date
  amount_limit Decimal  @db.Decimal(10, 2)
  created_at   DateTime @default(now())
  updated_at   DateTime @default(now()) @updatedAt

  @@unique([owner_id, category, month])
}

model statements {
  id                   Int            @id @default(autoincrement())
  filename             String
  bank_name            String?
  card_name            String?
  account_type         String?
  account_number       String
  billing_start_date   DateTime?      @db.Date
  billing_end_date     DateTime?      @db.Date
  total_amount_due     Decimal?       @db.Decimal(12, 2)
  minimum_amount_due   Decimal?       @db.Decimal(12, 2)
  payment_due_date     DateTime?      @db.Date
  event_created        Boolean?       @default(false)
  tier_used            String?
  created_at           DateTime?      @default(now())
  statement_type       String         @default("credit_card")
  currency             String?        @default("AUD")
  opening_balance      Decimal?       @db.Decimal(12, 2)
  closing_balance      Decimal?       @db.Decimal(12, 2)
  total_credits        Decimal?       @db.Decimal(12, 2)
  total_debits         Decimal?       @db.Decimal(12, 2)
  interest_charged     Decimal?       @db.Decimal(12, 2)
  fees_charged         Decimal?       @db.Decimal(12, 2)
  credit_limit         Decimal?       @db.Decimal(12, 2)
  available_credit     Decimal?       @db.Decimal(12, 2)
  owner_id             Int            @default(1)
  account_holder_name  String?
  exchange_rate_to_aud Decimal?       @db.Decimal(10, 6)
  paperless_doc_id     Int?           @unique
  transactions         transactions[]
}

model transactions {
  id                      Int           @id @default(autoincrement())
  statement_id            Int?
  transaction_date        DateTime      @db.Date
  description             String?
  amount                  Decimal       @db.Decimal(12, 2)
  created_at              DateTime?     @default(now())
  transaction_type        String?       @default("debit")
  merchant_name           String?
  location                String?
  foreign_currency_amount Decimal?      @db.Decimal(12, 2)
  foreign_currency_code   String?
  category                String?
  row_index               Int?
  merchant_normalized     String?
  amount_aud              Decimal?      @db.Decimal(12, 2)
  owner_id                Int?
  reconciled_with_id      Int?
  statement               statements?   @relation(fields: [statement_id], references: [id], onDelete: Cascade)
  reconciled_with         transactions?  @relation("reconciled", fields: [reconciled_with_id], references: [id], onDelete: SetNull)
  reconciled_by           transactions[] @relation("reconciled")
  expense_metadata        expense_metadata?
}

model expense_metadata {
  id                    Int           @id @default(autoincrement())
  transaction_id        Int?          @unique
  source                String        @default("email")
  paperless_doc_id      Int?          @unique
  source_email_subject  String?
  source_email_from     String?
  payment_method        String?
  payment_method_detail String?
  order_reference       String?
  line_items            Json          @default("[]")
  tax_amount            Decimal?      @db.Decimal(12, 2)
  subtotal              Decimal?      @db.Decimal(12, 2)
  merchant_normalized   String?
  amount                Decimal?      @db.Decimal(12, 2)
  transaction_date      DateTime?     @db.Date
  extraction_model      String?       @default("gemini-2.5-flash")
  created_at            DateTime?     @default(now())
  transaction           transactions? @relation(fields: [transaction_id], references: [id], onDelete: Cascade)
}

model rule_apply_runs {
  id                    Int       @id @default(autoincrement())
  owner_id              Int
  applied_at            DateTime  @default(now())
  split_from            DateTime? @db.Date
  matched               Int       @default(0)
  transactions_affected Int       @default(0)
  reverted_at           DateTime?
  snapshot              Json      @default("[]")
}