import Foundation

public struct SearchResponse<T: MusicBrainzSearchable>: Codable, Sendable, Hashable, Equatable {
	public let count: Int
	public let offset: Int
	public let entities: [T]

	private enum CodingKeys: String, CodingKey, Hashable, Equatable {
		case count, offset
	}

	public init(from decoder: Decoder) throws {
		let container = try decoder.container(keyedBy: CodingKeys.self)
		count = try container.decode(Int.self, forKey: .count)
		offset = try container.decode(Int.self, forKey: .offset)

		let dynamicContainer = try decoder.container(keyedBy: DynamicCodingKey.self)
		guard let key = DynamicCodingKey(stringValue: T.entityType.responseKey) else {
			throw DecodingError.dataCorrupted(
				DecodingError.Context(
					codingPath: decoder.codingPath,
					debugDescription: "Invalid response key for entity type"
				)
			)
		}
		entities = try dynamicContainer.decode([T].self, forKey: key)
	}
}