// Farm Management Domain
// Contains Farm, Plot, and related farming infrastructure models

// Farm-specific Enums
enum FarmOwnership {
    PRIVATE_OWNED
    LEASED
    SHARECROPPED
    COOPERATIVE
    GOVERNMENT
    COMMUNAL
    FAMILY_INHERITED
}

enum FarmingSystem {
    MONOCULTURE
    POLYCULTURE
    MIXED_FARMING
    ORGANIC
    CONVENTIONAL
    INTEGRATED
    PERMACULTURE
    AGROFORESTRY
}

enum FarmAttachmentType {
    MAIN_PHOTO
    AERIAL_PHOTO
    SOIL_PHOTO
    CROP_PHOTO
    INFRASTRUCTURE_PHOTO
    LAND_CERTIFICATE
    SURVEY_MAP
    WATER_SOURCE_PHOTO
    ENTRANCE_PHOTO
    BOUNDARY_PHOTO
    EQUIPMENT_PHOTO
    STORAGE_PHOTO
    OTHER_DOCUMENT
}

// Farm Models
model Farm {
    id          String   @id @default(cuid())
    farmerId    String
    farmCode    String   @unique
    name        String
    address     String?
    village     String?
    district    String?
    province    String?
    postalCode  String?
    area        Decimal? // in hectares
    
    // Location data
    latitude    Float?
    longitude   Float?
    boundaries  Json? // GeoJSON polygon for farm boundaries
    elevation   Float? // meters above sea level
    
    // Farm characteristics
    soilType    String?
    soilPH      Float?
    waterSource WaterSource?
    irrigationType IrrigationType?
    slope       SlopeType?
    climate     ClimateType?
    
    // Infrastructure
    hasElectricity    Boolean? @default(false)
    hasWaterAccess    Boolean? @default(false)
    hasStorageFacility Boolean? @default(false)
    hasProcessingUnit Boolean? @default(false)
    accessRoadType    RoadType?
    
    // Photos and documentation
    mainPhotoUrl      String?
    aerialPhotoUrl    String?
    soilPhotoUrl      String?
    
    // Ownership and legal
    ownershipType     FarmOwnership?
    landCertificateNumber String?
    landCertificateUrl    String?
    
    // Agricultural details
    establishedYear   Int?
    totalInvestment   Decimal?
    annualProduction  Decimal? // estimated kg per year
    mainCrops         String[] // primary crops grown
    farmingSystem     FarmingSystem?
    organicCertified  Boolean? @default(false)
    
    description String?
    notes       String?
    isActive    Boolean  @default(true)
    createdAt   DateTime @default(now())
    updatedAt   DateTime @updatedAt

    // Relations
    farmer         Farmer           @relation(fields: [farmerId], references: [id], onDelete: Cascade)
    plots          Plot[]
    harvests       Harvest[]
    attachments    FarmAttachment[]
    weatherData    WeatherData[]
    weatherForecasts WeatherForecast[]
    inputs         FarmInput[]
    inputSchedules InputSchedule[]
    laborRecords   LaborRecord[]
    laborSchedules LaborSchedule[]
    equipmentUsage EquipmentUsage[]
    pestDiseaseRecords PestDiseaseRecord[]
    financialRecords FinancialRecord[]
    soilTests      SoilTest[]

    @@index([farmCode])
    @@index([farmerId])
    @@index([latitude, longitude])
    @@index([isActive])
    @@index([establishedYear])
    @@map("farms")
}

model Plot {
    id          String    @id @default(cuid())
    farmId      String
    name        String
    area        Decimal? // in hectares
    productId   String?
    variantId   String?
    plantedDate DateTime?
    boundaries  Json? // GeoJSON polygon for plot boundaries
    description String?
    isActive    Boolean   @default(true)
    createdAt   DateTime  @default(now())
    updatedAt   DateTime  @updatedAt

    // Relations
    farm           Farm            @relation(fields: [farmId], references: [id], onDelete: Cascade)
    product        Product?        @relation(fields: [productId], references: [id])
    variant        ProductVariant? @relation(fields: [variantId], references: [id])
    harvests       Harvest[]
    weatherData    WeatherData[]
    weatherForecasts WeatherForecast[]
    inputs         FarmInput[]
    inputSchedules InputSchedule[]
    laborRecords   LaborRecord[]
    laborSchedules LaborSchedule[]
    equipmentUsage EquipmentUsage[]
    pestDiseaseRecords PestDiseaseRecord[]
    financialRecords FinancialRecord[]
    soilTests      SoilTest[]
    seasons        PlotSeason[]

    @@index([farmId])
    @@index([productId, variantId])
    @@index([plantedDate])
    @@index([isActive])
    @@map("plots")
}

model FarmAttachment {
    id          String              @id @default(cuid())
    farmId      String
    type        FarmAttachmentType
    title       String
    description String?
    fileUrl     String
    fileName    String
    fileSize    Int? // in bytes
    mimeType    String?
    uploadedBy  String? // user ID who uploaded
    takenDate   DateTime? // when photo was taken
    gpsLocation Json? // GeoJSON point where photo was taken
    isVerified  Boolean             @default(false)
    verifiedBy  String? // admin ID who verified
    verifiedAt  DateTime?
    createdAt   DateTime            @default(now())
    updatedAt   DateTime            @updatedAt

    // Relations
    farm Farm @relation(fields: [farmId], references: [id], onDelete: Cascade)

    @@index([farmId])
    @@index([type])
    @@index([isVerified])
    @@index([createdAt])
    @@map("farm_attachments")
}

model SoilTest {
    id              String   @id @default(cuid())
    farmId          String
    plotId          String?
    testCode        String   @unique
    testDate        DateTime
    sampleDepth     Decimal? // cm
    sampleLocation  String?
    gpsCoordinates  Json? // GeoJSON point
    
    // Basic soil properties
    pH              Decimal?
    organicMatter   Decimal? // percentage
    soilTexture     String? // clay, sand, loam, etc.
    bulkDensity     Decimal? // g/cm³
    porosity        Decimal? // percentage
    
    // Nutrients (ppm)
    nitrogen        Decimal?
    phosphorus      Decimal?
    potassium       Decimal?
    calcium         Decimal?
    magnesium       Decimal?
    sulfur          Decimal?
    
    // Micronutrients (ppm)
    zinc            Decimal?
    iron            Decimal?
    manganese       Decimal?
    copper          Decimal?
    boron           Decimal?
    
    // Other properties
    conductivity    Decimal? // dS/m
    cationExchangeCapacity Decimal? // cmol/kg
    baseStaturation Decimal? // percentage
    carbonNitrogenRatio Decimal?
    
    // Analysis details
    recommendations String?
    testLaboratory  String?
    technicianName  String?
    testCost        Decimal?
    reportUrl       String?
    
    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([testCode])
    @@index([farmId, plotId])
    @@index([testDate])
    @@index([testLaboratory])
    @@map("soil_tests")
}