// Communication & Notifications Domain
// Contains Notification, Message, and communication models

// Communication-specific Enums
enum NotificationType {
    SYSTEM
    ANNOUNCEMENT
    ALERT
    REMINDER
    PROMOTION
    UPDATE
    WARNING
    INFO
    SUCCESS
    ERROR
}

enum NotificationCategory {
    GENERAL
    PROCUREMENT
    PAYMENT
    QUALITY
    WEATHER
    PRICE_ALERT
    TRAINING
    CERTIFICATION
    MAINTENANCE
    HARVEST
    PLANTING
    MARKET
    CONTRACT
    COMPLIANCE
}

enum NotificationStatus {
    PENDING
    SCHEDULED
    SENT
    DELIVERED
    FAILED
    CANCELLED
    EXPIRED
}

// Communication Models
model Notification {
    id              String             @id @default(cuid())
    title           String
    message         String
    type            NotificationType
    category        NotificationCategory @default(GENERAL)
    priority        Priority           @default(NORMAL)
    
    // Recipients
    recipientId     String?            // specific user ID
    recipientType   UserRole?          // or broadcast to user type
    recipientIds    String[]           // multiple specific users
    
    // Targeting
    farmerIds       String[]           // specific farmers
    buyerIds        String[]           // specific buyers
    region          String?            // geographic targeting
    productIds      String[]           // product-specific notifications
    
    // Content and media
    content         String?            // detailed content/body
    imageUrl        String?
    actionUrl       String?            // deep link or action URL
    actionLabel     String?            // button text
    
    // Scheduling
    scheduledAt     DateTime?          // for scheduled notifications
    expiresAt       DateTime?          // expiration date
    
    // Status tracking
    status          NotificationStatus @default(PENDING)
    sentAt          DateTime?
    deliveredCount  Int                @default(0)
    readCount       Int                @default(0)
    clickCount      Int                @default(0)
    
    // Metadata
    source          String?            // system, admin, automated, etc.
    sourceId        String?            // reference to source entity
    tags            String[]           // for categorization
    metadata        Json?              // additional data
    
    // Tracking
    isRead          Boolean            @default(false)
    readAt          DateTime?
    isClicked       Boolean            @default(false)
    clickedAt       DateTime?
    
    createdAt       DateTime           @default(now())
    updatedAt       DateTime           @updatedAt

    // Relations
    recipients      NotificationRecipient[]

    @@index([type])
    @@index([category])
    @@index([priority])
    @@index([status])
    @@index([scheduledAt])
    @@index([recipientType])
    @@index([region])
    @@index([createdAt])
    @@map("notifications")
}

model NotificationRecipient {
    id             String   @id @default(cuid())
    notificationId String
    userId         String
    isRead         Boolean  @default(false)
    readAt         DateTime?
    isClicked      Boolean  @default(false)
    clickedAt      DateTime?
    isDelivered    Boolean  @default(false)
    deliveredAt    DateTime?
    createdAt      DateTime @default(now())

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

    @@unique([notificationId, userId])
    @@index([notificationId])
    @@index([userId])
    @@index([isRead])
    @@index([isDelivered])
    @@index([createdAt])
    @@map("notification_recipients")
}

model Message {
    id           String      @id @default(cuid())
    senderId     String
    receiverId   String?
    groupId      String?
    subject      String?
    content      String
    messageType  MessageType
    priority     Priority    @default(NORMAL)
    isRead       Boolean     @default(false)
    readAt       DateTime?
    attachments  String[] // file URLs
    deliveryStatus MessageStatus @default(SENT)
    sentAt       DateTime    @default(now())
    createdAt    DateTime    @default(now())
    updatedAt    DateTime    @updatedAt

    @@index([senderId])
    @@index([receiverId])
    @@index([messageType])
    @@index([isRead])
    @@index([sentAt])
    @@index([deliveryStatus])
    @@map("messages")
}