// TouchBase schema. See /Users/noise/Documents/obsidian/Massage/Initial.md §4 for design rationale.
// All timestamps are timestamptz (UTC at rest); WorkingHours is the only "wall-clock-local" model.

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

datasource db {
  provider = "postgresql"
}

// ============================================================
// Identity & roles
// ============================================================

enum Role {
  CUSTOMER
  THERAPIST
  ADMIN
}

model User {
  id            String    @id @default(cuid())
  email         String    @unique
  emailVerified DateTime? @db.Timestamptz(3)
  name          String?   // Nullable — Auth.js magic-link signup creates users without a name; captured later at first booking
  image         String?   // Auth.js convention; unused for now but adapter expects it
  phone         String?
  role          Role      @default(CUSTOMER)
  createdAt     DateTime  @default(now()) @db.Timestamptz(3)
  updatedAt     DateTime  @updatedAt      @db.Timestamptz(3)
  deletedAt     DateTime? @db.Timestamptz(3)

  customer  Customer?
  therapist Therapist?
  bookings  Booking[]  @relation("CustomerBookings")
  audits    AuditLog[] @relation("ActorAudit")

  @@index([role])
  @@index([deletedAt])
}

// Auth.js magic-link state. JWT sessions, so no Account or Session tables needed.
model VerificationToken {
  identifier String
  token      String
  expires    DateTime @db.Timestamptz(3)

  @@id([identifier, token])
}

model Customer {
  userId           String   @id
  notes            String?  // Front-desk notes. Sensitive — column-level encrypt before prod.
  stripeCustomerId String?  @unique
  createdAt        DateTime @default(now()) @db.Timestamptz(3)
  updatedAt        DateTime @updatedAt      @db.Timestamptz(3)

  user User @relation(fields: [userId], references: [id], onDelete: Cascade)
}

model Therapist {
  userId    String   @id
  bio       String?
  active    Boolean  @default(true)
  createdAt DateTime @default(now()) @db.Timestamptz(3)
  updatedAt DateTime @updatedAt      @db.Timestamptz(3)

  user         User                   @relation(fields: [userId], references: [id], onDelete: Restrict)
  tags         TherapistTag[]
  workingHours WorkingHours[]
  overrides    AvailabilityOverride[]
  services     ServiceTherapist[]
  bookings     Booking[]
}

model TherapistTag {
  therapistId String
  tag         String

  therapist Therapist @relation(fields: [therapistId], references: [userId], onDelete: Cascade)

  @@id([therapistId, tag])
  @@index([tag])
}

// ============================================================
// Resources
// ============================================================

model Room {
  id        String   @id @default(cuid())
  name      String
  active    Boolean  @default(true)
  createdAt DateTime @default(now()) @db.Timestamptz(3)
  updatedAt DateTime @updatedAt      @db.Timestamptz(3)

  tags     RoomTag[]
  blocks   RoomBlock[]
  bookings Booking[]
}

model RoomTag {
  roomId String
  tag    String

  room Room @relation(fields: [roomId], references: [id], onDelete: Cascade)

  @@id([roomId, tag])
  @@index([tag])
}

model RoomBlock {
  id        String   @id @default(cuid())
  roomId    String
  startsAt  DateTime @db.Timestamptz(3)
  endsAt    DateTime @db.Timestamptz(3)
  reason    String?
  createdAt DateTime @default(now()) @db.Timestamptz(3)

  room Room @relation(fields: [roomId], references: [id], onDelete: Cascade)

  @@index([roomId, startsAt])
}

// ============================================================
// Services
// ============================================================

model Service {
  id                    String   @id @default(cuid())
  name                  String
  description           String?
  durationMin           Int
  bufferAfterMin        Int      @default(15)
  priceCents            Int
  depositCents          Int      @default(0)
  active                Boolean  @default(true)
  requiredTherapistTags String[] @default([])
  requiredRoomTags      String[] @default([])
  createdAt             DateTime @default(now()) @db.Timestamptz(3)
  updatedAt             DateTime @updatedAt      @db.Timestamptz(3)

  therapists ServiceTherapist[]
  bookings   Booking[]
}

// Explicit allowlist of therapists who perform a service.
// Tag intersection is the necessary condition; this is the additional opt-in.
model ServiceTherapist {
  serviceId   String
  therapistId String

  service   Service   @relation(fields: [serviceId], references: [id], onDelete: Cascade)
  therapist Therapist @relation(fields: [therapistId], references: [userId], onDelete: Cascade)

  @@id([serviceId, therapistId])
  @@index([therapistId])
}

// ============================================================
// Availability
// ============================================================

model WorkingHours {
  id            String    @id @default(cuid())
  therapistId   String
  weekday       Int       // 0=Sun .. 6=Sat
  startMin      Int       // minutes from midnight, in APP_TZ (practice-local wall clock)
  endMin        Int
  effectiveFrom DateTime? @db.Timestamptz(3)
  effectiveTo   DateTime? @db.Timestamptz(3)

  therapist Therapist @relation(fields: [therapistId], references: [userId], onDelete: Cascade)

  @@index([therapistId, weekday])
}

enum OverrideKind {
  BLOCK        // PTO, sick — blocks an underlying working hours interval
  EXTRA_HOURS  // ad-hoc availability outside normal working hours
}

model AvailabilityOverride {
  id          String       @id @default(cuid())
  therapistId String
  startsAt    DateTime     @db.Timestamptz(3)
  endsAt      DateTime     @db.Timestamptz(3)
  kind        OverrideKind
  reason      String?
  createdAt   DateTime     @default(now()) @db.Timestamptz(3)

  therapist Therapist @relation(fields: [therapistId], references: [userId], onDelete: Cascade)

  @@index([therapistId, startsAt])
}

// ============================================================
// Bookings
// ============================================================

enum BookingStatus {
  HOLD
  CONFIRMED
  COMPLETED
  NO_SHOW
  CANCELLED
}

enum PaymentStatus {
  NONE
  PENDING
  AUTHORIZED
  CAPTURED
  REFUNDED
  FAILED
}

model Booking {
  id          String @id @default(cuid())
  customerId  String
  therapistId String
  roomId      String
  serviceId   String

  startsAt       DateTime @db.Timestamptz(3)
  endsAt         DateTime @db.Timestamptz(3)
  // = endsAt + service.bufferAfterMin. Stored on the row so the room exclusion
  // constraint is single-column without a join. Recompute when service buffer changes.
  roomReleasedAt DateTime @db.Timestamptz(3)

  status        BookingStatus @default(HOLD)
  holdExpiresAt DateTime?     @db.Timestamptz(3)

  priceCents            Int           @default(0)
  depositCents          Int           @default(0)
  paymentStatus         PaymentStatus @default(NONE)
  stripePaymentIntentId String?

  notes        String?   // Front-desk notes specific to this booking
  cancelledAt  DateTime? @db.Timestamptz(3)
  cancelledBy  String?   // user id (free text — actor may be a system process)
  cancelReason String?

  createdAt DateTime @default(now()) @db.Timestamptz(3)
  updatedAt DateTime @updatedAt      @db.Timestamptz(3)

  customer  User      @relation("CustomerBookings", fields: [customerId], references: [id], onDelete: Restrict)
  therapist Therapist @relation(fields: [therapistId], references: [userId], onDelete: Restrict)
  room      Room      @relation(fields: [roomId], references: [id], onDelete: Restrict)
  service   Service   @relation(fields: [serviceId], references: [id], onDelete: Restrict)

  payments Payment[]

  @@index([startsAt])
  @@index([therapistId, startsAt])
  @@index([roomId, startsAt])
  @@index([status, holdExpiresAt])
}

// ============================================================
// Payments
// ============================================================

enum PaymentKind {
  DEPOSIT
  BALANCE
  REFUND
}

model Payment {
  id                    String        @id @default(cuid())
  bookingId             String
  kind                  PaymentKind
  amountCents           Int
  currency              String        @default("usd")
  stripePaymentIntentId String?       @unique
  status                PaymentStatus
  createdAt             DateTime      @default(now()) @db.Timestamptz(3)
  updatedAt             DateTime      @updatedAt      @db.Timestamptz(3)

  booking Booking @relation(fields: [bookingId], references: [id], onDelete: Cascade)

  @@index([bookingId])
}

// ============================================================
// Notifications & audit
// ============================================================

// Snapshot semantics: we record the email address as it was at send time
// (user may change theirs later). No FK to User intentionally.
model Notification {
  id         String    @id @default(cuid())
  userId     String?
  bookingId  String?
  channel    String    // "email"
  template   String    // "booking_confirmation", "reminder_24h", etc.
  to         String    // address snapshot
  subject    String
  bodyHash   String    // hash of rendered body for audit; full body not retained long-term
  status     String    // "queued" | "sent" | "failed" | "bounced"
  providerId String?
  sentAt     DateTime? @db.Timestamptz(3)
  createdAt  DateTime  @default(now()) @db.Timestamptz(3)

  @@index([bookingId])
  @@index([userId])
  @@index([status])
}

model AuditLog {
  id         String   @id @default(cuid())
  actorId    String?
  action     String   // "booking.created", "user.viewed_customer_notes", ...
  entityType String
  entityId   String
  meta       Json?
  ip         String?
  ua         String?
  createdAt  DateTime @default(now()) @db.Timestamptz(3)

  actor User? @relation("ActorAudit", fields: [actorId], references: [id], onDelete: SetNull)

  @@index([entityType, entityId])
  @@index([actorId, createdAt])
}