import Foundation

struct Business: Identifiable, Codable, Hashable {
    let id: String
    let name: String
    let imageExtension: String?

    enum CodingKeys: String, CodingKey {
        case businessId = "BusinessID"
        case name = "Name"
        // Fallbacks for alternate API shapes
        case altId = "ID"
        case altName = "BusinessName"
        case imageExtension = "ImageExtension"
    }

    init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)
        // BusinessID (from list endpoint) or ID (from other endpoints), always as String
        if let bid = try? container.decode(Int.self, forKey: .businessId) {
            id = String(bid)
        } else if let bid = try? container.decode(String.self, forKey: .businessId) {
            id = bid
        } else if let aid = try? container.decode(Int.self, forKey: .altId) {
            id = String(aid)
        } else if let aid = try? container.decode(String.self, forKey: .altId) {
            id = aid
        } else {
            id = ""
        }
        // Name (from list endpoint) or BusinessName (from other endpoints)
        name = (try? container.decode(String.self, forKey: .name))
            ?? (try? container.decode(String.self, forKey: .altName))
            ?? ""
        imageExtension = try? container.decode(String.self, forKey: .imageExtension)
    }

    func encode(to encoder: Encoder) throws {
        var container = encoder.container(keyedBy: CodingKeys.self)
        try container.encode(id, forKey: .businessId)
        try container.encode(name, forKey: .name)
        try container.encodeIfPresent(imageExtension, forKey: .imageExtension)
    }

    var headerImageURL: URL? {
        guard let ext = imageExtension, !ext.isEmpty else { return nil }
        return URL(string: "\(APIConfig.imageBaseURL)/businesses/\(id)/header.\(ext)")
    }
}