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yattee/Model/Cache/ChannelPlaylistsCacheModel.swift

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import Cache
import Foundation
import Logging
import SwiftyJSON
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struct ChannelPlaylistsCacheModel: CacheModel {
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static let shared = Self()
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let logger = Logger(label: "stream.yattee.cache.channel-playlists")
static let diskConfig = DiskConfig(name: "channel-playlists")
static let memoryConfig = MemoryConfig()
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var storage = try? Storage<String, JSON>(
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diskConfig: Self.diskConfig,
memoryConfig: Self.memoryConfig,
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transformer: BaseCacheModel.jsonTransformer
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)
func storePlaylist(playlist: ChannelPlaylist) {
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let date = iso8601DateFormatter.string(from: Date())
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logger.info("STORE \(playlist.cacheKey) -- \(date)")
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let feedTimeObject: JSON = ["date": date]
let playlistObject: JSON = ["playlist": playlist.json.object]
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try? storage?.setObject(feedTimeObject, forKey: playlistTimeCacheKey(playlist.cacheKey))
try? storage?.setObject(playlistObject, forKey: playlist.cacheKey)
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}
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func retrievePlaylist(_ playlist: ChannelPlaylist) -> ChannelPlaylist? {
logger.info("RETRIEVE \(playlist.cacheKey)")
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if let json = try? storage?.object(forKey: playlist.cacheKey).dictionaryValue["playlist"] {
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return ChannelPlaylist.from(json)
}
return nil
}
func getPlaylistsTime(_ id: ChannelPlaylist.ID) -> Date? {
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if let json = try? storage?.object(forKey: playlistTimeCacheKey(id)),
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let string = json.dictionaryValue["date"]?.string,
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let date = iso8601DateFormatter.date(from: string)
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{
return date
}
return nil
}
func getFormattedPlaylistTime(_ id: ChannelPlaylist.ID) -> String {
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getFormattedDate(getPlaylistsTime(id))
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}
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private func playlistTimeCacheKey(_ cacheKey: ChannelPlaylist.ID) -> String {
"\(cacheKey)-time"
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}
}