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yattee/Model/Cache/ChannelsCacheModel.swift

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import Cache
import Foundation
import Logging
import SwiftyJSON
struct ChannelsCacheModel: CacheModel {
static let shared = ChannelsCacheModel()
let logger = Logger(label: "stream.yattee.cache.channels")
static let diskConfig = DiskConfig(name: "channels")
static let memoryConfig = MemoryConfig()
let storage = try? Storage<String, JSON>(
diskConfig: Self.diskConfig,
memoryConfig: Self.memoryConfig,
transformer: BaseCacheModel.jsonTransformer
)
func store(_ channel: Channel) {
guard channel.hasExtendedDetails else {
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logger.debug("not caching \(channel.cacheKey)")
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return
}
logger.info("caching \(channel.cacheKey)")
try? storage?.setObject(channel.json, forKey: channel.cacheKey)
}
func storeIfMissing(_ channel: Channel) {
guard let storage, !storage.objectExists(forKey: channel.cacheKey) else {
return
}
store(channel)
}
func retrieve(_ cacheKey: String) -> Channel? {
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logger.debug("retrieving cache for \(cacheKey)")
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if let json = try? storage?.object(forKey: cacheKey) {
return Channel.from(json)
}
return nil
}
}