codable.swift

import Foundation

let json = """
{
    "businesses": [
        {
        "id": "joes-pizza-new-york-4",
        "name": "Joe's Pizza",
        "image_url": "https://s3-media2.fl.yelpcdn.com/bphoto/FhbFkrh_3TrAOZvoWTyOJA/o.jpg",
        "is_closed": false,
        "url": "https://www.yelp.com/biz/joes-pizza-new-york-4?adjust_creative=om5ZiponkpRqUNa3pVPiRg&utm_campaign=yelp_api_v3&utm_medium=api_v3_business_search&utm_source=om5ZiponkpRqUNa3pVPiRg",
        "review_count": 1822,
        "categories": [{
            "alias": "pizza",
            "title": "Pizza"
        }],
        "rating": 4,
        "coordinates": {
            "latitude": 40.7305599,
            "longitude": -74.0021299
        },
        "transactions": [],
        "price": "$",
        "location": {
            "address1": "7 Carmine St",
            "address2": "",
            "address3": "",
            "city": "New York",
            "zip_code": "10014",
            "country": "US",
            "state": "NY",
            "display_address": [
                "7 Carmine St",
                "New York, NY 10014"
            ]
        },
        "phone": "+12123661182",
        "display_phone": "(212) 366-1182",
        "distance": 2873.519378444
        }
    ]
}
"""


class Category: Codable {
    let alias: String
    let title: String
}

class Location: Codable {
    let address1: String?
    let address2: String?
    let address3: String?
    let city: String
    let zipCode: String
    let country: String
    let state: String
    let displayAddress: [String]

    enum CodingKeys: String, CodingKey {
        case address1
        case address2
        case address3
        case city
        case zipCode = "zip_code"
        case country
        case state
        case displayAddress = "display_address"
    }
}

class Coordinate: Codable {
    let latitude: Double
    let longitude: Double
}

struct Business: Codable {
    var id: String
    let name: String
    let imageURL: String
    let isClosed: Bool
    let url: String
    let reviewCount: Int
    let categories: [Category]
    let rating: Int
    let price: String?
    let location: Location?
    let phone: String
    let displayPhone: String
    let distance: Double
    let coordinates: Coordinate

    enum CodingKeys: String, CodingKey {
        case id = "id"
        case name
        case imageURL = "image_url"
        case isClosed = "is_closed"
        case url
        case reviewCount = "review_count"
        case categories
        case rating
        case price
        case location
        case phone
        case displayPhone = "display_phone"
        case distance
        case coordinates
    }
}

class Results: Codable {
    let businesses: [Business]
}



let data = json.data(using: .utf8)!
do {
    let results = try JSONDecoder().decode(Results.self, from: data)
    print(results.businesses)
}
catch {
    print(error)
}