{
  "name": "Land",
  "type": "object",
  "properties": {
    "farmer_id": {
      "type": "string",
      "description": "ID petani pemilik lahan"
    },
    "name": {
      "type": "string",
      "description": "Nama/label lahan"
    },
    "polygon_coordinates": {
      "type": "array",
      "description": "Koordinat polygon lahan dalam format [[lng, lat], ...]",
      "items": {
        "type": "array",
        "items": {
          "type": "number"
        }
      }
    },
    "center_lat": {
      "type": "number",
      "description": "Latitude titik tengah lahan"
    },
    "center_lng": {
      "type": "number",
      "description": "Longitude titik tengah lahan"
    },
    "area_hectares": {
      "type": "number",
      "description": "Luas lahan dalam hektar"
    },
    "land_status": {
      "type": "string",
      "enum": [
        "owned",
        "rented",
        "shared",
        "government"
      ],
      "description": "Status kepemilikan lahan"
    },
    "validation_status": {
      "type": "string",
      "enum": [
        "valid",
        "invalid",
        "need_review",
        "pending"
      ],
      "default": "pending",
      "description": "Status validasi lahan"
    },
    "validation_notes": {
      "type": "string",
      "description": "Catatan hasil validasi"
    },
    "productivity_percentage": {
      "type": "number",
      "description": "Persentase produktivitas lahan (0-100)"
    },
    "productivity_status": {
      "type": "string",
      "enum": [
        "highly_productive",
        "productive",
        "less_productive",
        "not_productive"
      ],
      "description": "Status produktivitas lahan"
    },
    "last_productivity_update": {
      "type": "string",
      "format": "date-time",
      "description": "Waktu update produktivitas terakhir"
    },
    "village": {
      "type": "string",
      "description": "Desa lokasi lahan"
    },
    "district": {
      "type": "string",
      "description": "Kecamatan lokasi lahan"
    },
    "regency": {
      "type": "string",
      "description": "Kabupaten lokasi lahan"
    },
    "sync_status": {
      "type": "string",
      "enum": [
        "pending",
        "synced",
        "failed"
      ],
      "default": "pending"
    }
  },
  "required": [
    "farmer_id",
    "name",
    "center_lat",
    "center_lng"
  ]
}