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

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

// ============================================
// USER & AUTHENTICATION
// ============================================

model User {
  id           String   @id @default(cuid())
  email        String   @unique
  passwordHash String
  name         String
  createdAt    DateTime @default(now())
  updatedAt    DateTime @updatedAt

  // Relations
  sessions           Session[]
  workspaceMembers   WorkspaceMember[]
  createdAppointments Appointment[] @relation("AppointmentCreatedBy")
  updatedAppointments Appointment[] @relation("AppointmentUpdatedBy")
  createdMedications  Medication[]  @relation("MedicationCreatedBy")
  updatedMedications  Medication[]  @relation("MedicationUpdatedBy")
  createdNotes        Note[]        @relation("NoteCreatedBy")
  updatedNotes        Note[]        @relation("NoteUpdatedBy")
  loggedDoses         DoseLog[]     @relation("DoseLoggedBy")
  undoneDoses         DoseLog[]     @relation("DoseUndoneBy")
  auditLogs           AuditLog[]

  @@index([email])
}

model Session {
  id        String   @id @default(cuid())
  userId    String
  token     String   @unique
  expiresAt DateTime
  createdAt DateTime @default(now())
  userAgent String?
  ipAddress String?

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

  @@index([token])
  @@index([userId])
  @@index([expiresAt])
}

model LoginAttempt {
  id        String   @id @default(cuid())
  email     String
  ipAddress String?
  success   Boolean
  createdAt DateTime @default(now())

  @@index([email, createdAt])
  @@index([ipAddress, createdAt])
}

// ============================================
// WORKSPACE & SHARING
// ============================================

model Workspace {
  id             String   @id @default(cuid())
  name           String   // e.g., "Grace's Plan"
  clinicPhone    String?
  emergencyPhone String?
  quietHoursStart String? // HH:mm format
  quietHoursEnd   String? // HH:mm format
  largeTextMode  Boolean  @default(false)
  createdAt      DateTime @default(now())
  updatedAt      DateTime @updatedAt

  // Relations
  members      WorkspaceMember[]
  inviteTokens InviteToken[]
  appointments Appointment[]
  medications  Medication[]
  notes        Note[]
  doseLogs     DoseLog[]
  auditLogs    AuditLog[]
  syncCursors  SyncCursor[]

  @@index([name])
}

enum WorkspaceRole {
  OWNER
  EDITOR
  VIEWER
}

model WorkspaceMember {
  id          String        @id @default(cuid())
  workspaceId String
  userId      String
  role        WorkspaceRole @default(VIEWER)
  createdAt   DateTime      @default(now())

  // Relations
  workspace Workspace @relation(fields: [workspaceId], references: [id], onDelete: Cascade)
  user      User      @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@unique([workspaceId, userId])
  @@index([userId])
}

model InviteToken {
  id          String        @id @default(cuid())
  workspaceId String
  token       String        @unique
  role        WorkspaceRole @default(VIEWER)
  expiresAt   DateTime
  usedAt      DateTime?
  usedById    String?
  createdAt   DateTime      @default(now())

  // Relations
  workspace Workspace @relation(fields: [workspaceId], references: [id], onDelete: Cascade)

  @@index([token])
  @@index([workspaceId])
}

// ============================================
// APPOINTMENTS
// ============================================

model Appointment {
  id          String    @id @default(cuid())
  workspaceId String
  title       String
  datetime    DateTime
  location    String?
  mapUrl      String?
  notes       String?
  deletedAt   DateTime?
  createdAt   DateTime  @default(now())
  updatedAt   DateTime  @updatedAt
  createdById String
  updatedById String

  // Sync tracking
  version     Int       @default(1)
  syncedAt    DateTime  @default(now())

  // Relations
  workspace Workspace @relation(fields: [workspaceId], references: [id], onDelete: Cascade)
  createdBy User      @relation("AppointmentCreatedBy", fields: [createdById], references: [id])
  updatedBy User      @relation("AppointmentUpdatedBy", fields: [updatedById], references: [id])

  @@index([workspaceId, datetime])
  @@index([workspaceId, deletedAt])
  @@index([syncedAt])
}

// ============================================
// MEDICATIONS
// ============================================

enum ScheduleType {
  FIXED_TIMES    // e.g., 08:00, 20:00 daily
  INTERVAL       // every X hours
  WEEKDAYS       // specific weekdays at a time
  PRN            // as needed with min hours between
}

model Medication {
  id           String       @id @default(cuid())
  workspaceId  String
  name         String
  instructions String?
  scheduleType ScheduleType
  scheduleData Json         // Flexible storage for schedule details
  startDate    DateTime?
  endDate      DateTime?
  active       Boolean      @default(true)
  deletedAt    DateTime?
  createdAt    DateTime     @default(now())
  updatedAt    DateTime     @updatedAt
  createdById  String
  updatedById  String

  // Sync tracking
  version      Int          @default(1)
  syncedAt     DateTime     @default(now())

  // Relations
  workspace Workspace @relation(fields: [workspaceId], references: [id], onDelete: Cascade)
  createdBy User      @relation("MedicationCreatedBy", fields: [createdById], references: [id])
  updatedBy User      @relation("MedicationUpdatedBy", fields: [updatedById], references: [id])
  doseLogs  DoseLog[]

  @@index([workspaceId, active])
  @@index([workspaceId, deletedAt])
  @@index([syncedAt])
}

// Schedule data shapes (stored as JSON):
// FIXED_TIMES: { times: ["08:00", "20:00"] }
// INTERVAL: { hours: 8, startTime: "08:00" }
// WEEKDAYS: { days: [1, 3, 5], time: "09:00" } // Monday, Wednesday, Friday
// PRN: { minHoursBetween: 4 }

model DoseLog {
  id           String    @id @default(cuid())
  medicationId String
  workspaceId  String
  takenAt      DateTime
  loggedById   String
  undoneAt     DateTime?
  undoneById   String?
  createdAt    DateTime  @default(now())

  // Sync tracking (append-only, never overwritten)
  syncedAt     DateTime  @default(now())

  // Relations
  medication Medication @relation(fields: [medicationId], references: [id], onDelete: Cascade)
  workspace  Workspace  @relation(fields: [workspaceId], references: [id], onDelete: Cascade)
  loggedBy   User       @relation("DoseLoggedBy", fields: [loggedById], references: [id])
  undoneBy   User?      @relation("DoseUndoneBy", fields: [undoneById], references: [id])

  @@index([medicationId, takenAt])
  @@index([workspaceId, takenAt])
  @@index([syncedAt])
}

// ============================================
// NOTES
// ============================================

enum NoteType {
  QUESTION  // Questions for doctor
  GENERAL   // General notes
}

model Note {
  id          String    @id @default(cuid())
  workspaceId String
  type        NoteType
  content     String
  askedAt     DateTime? // When a question was asked (marked)
  deletedAt   DateTime?
  createdAt   DateTime  @default(now())
  updatedAt   DateTime  @updatedAt
  createdById String
  updatedById String

  // Sync tracking
  version     Int       @default(1)
  syncedAt    DateTime  @default(now())

  // Relations
  workspace Workspace @relation(fields: [workspaceId], references: [id], onDelete: Cascade)
  createdBy User      @relation("NoteCreatedBy", fields: [createdById], references: [id])
  updatedBy User      @relation("NoteUpdatedBy", fields: [updatedById], references: [id])

  @@index([workspaceId, type])
  @@index([workspaceId, deletedAt])
  @@index([syncedAt])
}

// ============================================
// AUDIT LOG
// ============================================

model AuditLog {
  id          String   @id @default(cuid())
  workspaceId String
  userId      String
  action      String   // CREATE, UPDATE, DELETE, TAKE_DOSE, UNDO_DOSE, etc.
  entityType  String   // APPOINTMENT, MEDICATION, NOTE, DOSE_LOG
  entityId    String
  details     Json?    // Additional context
  createdAt   DateTime @default(now())

  // Relations
  workspace Workspace @relation(fields: [workspaceId], references: [id], onDelete: Cascade)
  user      User      @relation(fields: [userId], references: [id])

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

// ============================================
// SYNC
// ============================================

model SyncCursor {
  id          String   @id @default(cuid())
  workspaceId String
  cursor      BigInt   @default(0) // Timestamp-based cursor
  updatedAt   DateTime @updatedAt

  // Relations
  workspace Workspace @relation(fields: [workspaceId], references: [id], onDelete: Cascade)

  @@unique([workspaceId])
}