// This is your Prisma schema file,
// learn more about it in the docs: https://pris.ly/d/prisma-schema

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

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

model Account {
  id          String   @id @default(cuid())
  name        String
  bankId      String
  accountNumber String
  type        String   // CHECKING | SAVINGS | CREDIT_CARD | OTHER
  folderId    String?
  balance     Float    @default(0)
  currency    String   @default("EUR")
  lastImport  String?
  externalUrl String?  // Custom URL for external bank portal
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  folder      Folder?      @relation(fields: [folderId], references: [id], onDelete: SetNull)
  transactions Transaction[]

  @@index([folderId])
}

model Transaction {
  id          String   @id @default(cuid())
  accountId   String
  date        String
  amount      Float
  description String
  type        String   // DEBIT | CREDIT
  categoryId  String?
  isReconciled Boolean @default(false)
  fitId       String   // OFX unique transaction ID
  memo        String?
  checkNum    String?
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  account  Account   @relation(fields: [accountId], references: [id], onDelete: Cascade)
  category Category? @relation(fields: [categoryId], references: [id], onDelete: SetNull)

  @@unique([accountId, fitId])
  @@index([accountId])
  @@index([categoryId])
  @@index([date])
}

model Folder {
  id        String   @id @default(cuid())
  name      String
  parentId  String?
  color     String
  icon      String
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  parent   Folder?   @relation("FolderHierarchy", fields: [parentId], references: [id], onDelete: Cascade)
  children Folder[]  @relation("FolderHierarchy")
  accounts Account[]

  @@index([parentId])
}

model Category {
  id        String   @id @default(cuid())
  name      String
  color     String
  icon      String
  keywords  String   // JSON array stored as string
  parentId  String?
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  parent       Category?     @relation("CategoryHierarchy", fields: [parentId], references: [id], onDelete: Cascade)
  children     Category[]    @relation("CategoryHierarchy")
  transactions Transaction[]

  @@index([parentId])
}