// Operations Management Domain
// Contains Input management, Labor, Equipment, and daily operations

// Operations-specific Enums
enum SupplierType {
    SEED_SUPPLIER
    FERTILIZER_SUPPLIER
    PESTICIDE_SUPPLIER
    EQUIPMENT_SUPPLIER
    GENERAL_SUPPLIER
    COOPERATIVE
    GOVERNMENT_AGENCY
}

enum WorkerRole {
    PERMANENT
    SEASONAL
    DAILY
    CONTRACTOR
    SUPERVISOR
    FOREMAN
    SPECIALIST
}

enum SkillLevel {
    BEGINNER
    INTERMEDIATE
    ADVANCED
    EXPERT
}

enum ContractType {
    PERMANENT
    TEMPORARY
    SEASONAL
    PROJECT_BASED
    DAILY
}

enum EquipmentType {
    TRACTOR
    HARVESTER
    PLANTER
    CULTIVATOR
    IRRIGATION_SYSTEM
    SPRAYER
    THRESHER
    MOWER
    TOOLS
    VEHICLE
    PROCESSING_EQUIPMENT
    STORAGE_EQUIPMENT
}

enum EquipmentCondition {
    EXCELLENT
    GOOD
    FAIR
    POOR
    NEEDS_REPAIR
    OUT_OF_ORDER
}

enum EquipmentStatus {
    ACTIVE
    INACTIVE
    MAINTENANCE
    REPAIR
    RETIRED
}

enum MaintenanceType {
    PREVENTIVE
    CORRECTIVE
    EMERGENCY
    OVERHAUL
    INSPECTION
    CALIBRATION
}

enum AssetType {
    BUILDING
    LAND_IMPROVEMENT
    INFRASTRUCTURE
    VEHICLE
    MACHINERY
    FURNITURE
    TECHNOLOGY
    OTHER
}

enum AssetCondition {
    NEW
    EXCELLENT
    GOOD
    FAIR
    POOR
    DAMAGED
}

// Operations Models
model FarmInput {
    id                String     @id @default(cuid())
    farmId            String
    plotId            String?
    inputType         InputType
    productName       String
    brand             String?
    quantity          Decimal
    unit              String
    cost              Decimal
    supplier          String?
    supplierContact   String?
    batchNumber       String?
    expiryDate        DateTime?
    applicationDate   DateTime?
    applicationMethod String?
    applicationRate   String? // per hectare or per plant
    activeIngredient  String? // for pesticides/fertilizers
    concentration     Decimal? // percentage
    notes             String?
    invoiceNumber     String?
    receiptUrl        String?
    createdAt         DateTime   @default(now())
    updatedAt         DateTime   @updatedAt

    // Relations
    farm Farm  @relation(fields: [farmId], references: [id])
    plot Plot? @relation(fields: [plotId], references: [id])

    @@index([farmId, plotId])
    @@index([inputType])
    @@index([applicationDate])
    @@index([supplier])
    @@index([expiryDate])
    @@map("farm_inputs")
}

model InputSchedule {
    id              String         @id @default(cuid())
    farmId          String
    plotId          String?
    inputType       InputType
    productName     String
    scheduledDate   DateTime
    quantity        Decimal
    unit            String
    method          String?
    status          ScheduleStatus @default(PENDING)
    appliedDate     DateTime?
    appliedBy       String?
    actualQuantity  Decimal?
    notes           String?
    createdAt       DateTime       @default(now())
    updatedAt       DateTime       @updatedAt

    // Relations
    farm Farm  @relation(fields: [farmId], references: [id])
    plot Plot? @relation(fields: [plotId], references: [id])

    @@index([farmId, plotId])
    @@index([scheduledDate])
    @@index([status])
    @@index([inputType])
    @@map("input_schedules")
}

model Supplier {
    id              String   @id @default(cuid())
    name            String
    contactPerson   String?
    phone           String?
    email           String?
    address         String?
    supplierType    SupplierType
    paymentTerms    String?
    deliveryTerms   String?
    qualityCertifications String[]
    isActive        Boolean  @default(true)
    notes           String?
    createdAt       DateTime @default(now())
    updatedAt       DateTime @updatedAt

    @@index([supplierType])
    @@index([isActive])
    @@index([name])
    @@map("suppliers")
}

model FarmWorker {
    id              String      @id @default(cuid())
    farmerId        String
    workerCode      String      @unique
    name            String
    phone           String?
    email           String?
    address         String?
    identityNumber  String?
    role            WorkerRole
    skillLevel      SkillLevel?
    dailyWage       Decimal?
    monthlyWage     Decimal?
    paymentMethod   PaymentMethod?
    bankAccount     String?
    emergencyContact String?
    emergencyPhone  String?
    hireDate        DateTime?
    contractType    ContractType?
    contractEnd     DateTime?
    isActive        Boolean     @default(true)
    notes           String?
    createdAt       DateTime    @default(now())
    updatedAt       DateTime    @updatedAt

    // Relations
    farmer         Farmer          @relation(fields: [farmerId], references: [id])
    laborRecords   LaborRecord[]
    laborSchedules LaborSchedule[]

    @@index([workerCode])
    @@index([farmerId])
    @@index([role])
    @@index([isActive])
    @@index([contractType])
    @@map("farm_workers")
}

model LaborRecord {
    id           String    @id @default(cuid())
    farmerId     String
    farmId       String
    workerId     String?
    plotId       String?
    workType     WorkType
    hoursWorked  Decimal
    wages        Decimal
    workDate     DateTime
    startTime    DateTime?
    endTime      DateTime?
    description  String?
    supervisor   String? // supervisor name or ID
    qualityRating Decimal? // 1-5 rating
    weather      String?
    notes        String?
    approved     Boolean   @default(false)
    approvedBy   String?
    approvedDate DateTime?
    paymentStatus PaymentStatus @default(PENDING)
    paidDate     DateTime?
    createdAt    DateTime  @default(now())
    updatedAt    DateTime  @updatedAt

    // Relations
    farmer Farmer     @relation(fields: [farmerId], references: [id])
    farm   Farm       @relation(fields: [farmId], references: [id])
    worker FarmWorker? @relation(fields: [workerId], references: [id])
    plot   Plot?      @relation(fields: [plotId], references: [id])

    @@index([farmerId, farmId])
    @@index([workDate])
    @@index([workType])
    @@index([paymentStatus])
    @@index([workerId])
    @@map("labor_records")
}

model LaborSchedule {
    id           String         @id @default(cuid())
    farmerId     String
    farmId       String
    workerId     String?
    plotId       String?
    workType     WorkType
    scheduledDate DateTime
    estimatedHours Decimal
    estimatedWage Decimal?
    status       ScheduleStatus @default(PENDING)
    assignedBy   String?
    notes        String?
    actualRecord String? // reference to LaborRecord ID
    createdAt    DateTime       @default(now())
    updatedAt    DateTime       @updatedAt

    // Relations
    farmer Farmer     @relation(fields: [farmerId], references: [id])
    farm   Farm       @relation(fields: [farmId], references: [id])
    worker FarmWorker? @relation(fields: [workerId], references: [id])
    plot   Plot?      @relation(fields: [plotId], references: [id])

    @@index([farmerId, farmId])
    @@index([scheduledDate])
    @@index([status])
    @@index([workType])
    @@index([workerId])
    @@map("labor_schedules")
}

model Equipment {
    id                String              @id @default(cuid())
    farmerId          String
    equipmentCode     String              @unique
    name              String
    type              EquipmentType
    brand             String?
    model             String?
    serialNumber      String?
    purchaseDate      DateTime?
    purchasePrice     Decimal?
    currentValue      Decimal?
    condition         EquipmentCondition
    status            EquipmentStatus     @default(ACTIVE)
    location          String? // where equipment is stored
    fuelType          String? // diesel, petrol, electric, manual
    capacity          String? // engine capacity, load capacity
    powerRating       String? // horsepower, wattage
    yearManufactured  Int?
    warranty          String?
    insurancePolicy   String?
    insuranceExpiry   DateTime?
    lastMaintenance   DateTime?
    nextMaintenance   DateTime?
    maintenanceCost   Decimal?
    operatingHours    Decimal? // total operating hours
    isActive          Boolean             @default(true)
    notes             String?
    photoUrl          String?
    manualUrl         String?
    createdAt         DateTime            @default(now())
    updatedAt         DateTime            @updatedAt

    // Relations
    farmer            Farmer              @relation(fields: [farmerId], references: [id])
    maintenanceRecords MaintenanceRecord[]
    usageRecords      EquipmentUsage[]

    @@index([equipmentCode])
    @@index([farmerId])
    @@index([type])
    @@index([status])
    @@index([nextMaintenance])
    @@index([isActive])
    @@map("equipment")
}

model MaintenanceRecord {
    id              String          @id @default(cuid())
    equipmentId     String
    maintenanceType MaintenanceType
    description     String
    cost            Decimal
    serviceProvider String?
    serviceDate     DateTime
    nextServiceDue  DateTime?
    partsReplaced   String[]
    laborHours      Decimal?
    invoiceNumber   String?
    receiptUrl      String?
    performedBy     String?
    notes           String?
    createdAt       DateTime        @default(now())
    updatedAt       DateTime        @updatedAt

    // Relations
    equipment Equipment @relation(fields: [equipmentId], references: [id])

    @@index([equipmentId])
    @@index([serviceDate])
    @@index([maintenanceType])
    @@index([nextServiceDue])
    @@map("maintenance_records")
}

model EquipmentUsage {
    id            String    @id @default(cuid())
    equipmentId   String
    farmId        String?
    plotId        String?
    operatorName  String?
    usageDate     DateTime
    startTime     DateTime?
    endTime       DateTime?
    hoursUsed     Decimal
    fuelConsumed  Decimal?
    workType      WorkType?
    description   String?
    meterReading  Decimal? // odometer, hour meter reading
    notes         String?
    createdAt     DateTime  @default(now())
    updatedAt     DateTime  @updatedAt

    // Relations
    equipment Equipment @relation(fields: [equipmentId], references: [id])
    farm      Farm?     @relation(fields: [farmId], references: [id])
    plot      Plot?     @relation(fields: [plotId], references: [id])

    @@index([equipmentId])
    @@index([usageDate])
    @@index([farmId, plotId])
    @@index([workType])
    @@map("equipment_usage")
}

model Asset {
    id              String      @id @default(cuid())
    farmerId        String
    assetCode       String      @unique
    name            String
    type            AssetType
    category        String? // building, land improvement, infrastructure
    description     String?
    purchaseDate    DateTime?
    purchasePrice   Decimal?
    currentValue    Decimal?
    depreciation    Decimal? // annual depreciation rate
    condition       AssetCondition
    location        String?
    size            String? // dimensions, area
    material        String? // construction material
    lifespan        Int? // expected lifespan in years
    warrantyExpiry  DateTime?
    insurancePolicy String?
    insuranceExpiry DateTime?
    photoUrls       String[]
    documentUrls    String[]
    isActive        Boolean     @default(true)
    notes           String?
    createdAt       DateTime    @default(now())
    updatedAt       DateTime    @updatedAt

    // Relations
    farmer Farmer @relation(fields: [farmerId], references: [id])

    @@index([assetCode])
    @@index([farmerId])
    @@index([type])
    @@index([condition])
    @@index([isActive])
    @@map("assets")
}