# Downloader Migration History

## Downloader
### Added
- A method ` func makeItems(entities: ) -> [DownloadStream] ` which is used to transform `DownloadItemEntity` into `[DownloadStream]`
- A method `public func cancelAllTasks(completionHandler: (() -> Void)?)` whic is used to cancel all download tasks

### Modified
- `loadUserList()` will return user id list from download items datasource

### Removed
- `self` as possible
- A property `list:[KKSStram]`, `items:[DownloadStream]` instead

## DownloadStream

### Added
- A struct `DownloadSource` which is used to keep the info of DownloadItem and ManifestItem, we can easily convert to memory objects from core data
- A constructor `init?(item: DownloadItemEntity, context: DownloadContext)` which is used to transform DownloadItemEntity, DownloadInfoEntity into DownloadStream

### Removed
- A property `thumbnail`
- A property `thumbnailSeeking`
- A property `manifestAtIndex`

## DRMContextModelKey ENUM
### Removed
- `platform` key
- `model` key
- `manufacturer` key

## DRMContextModelValue ENUM
### Removed
- `platform` value
- `manufacturer` value

## KKSContentKeyContextModel struct
### Removed
- `itemId` property
- `licenseId` property
- `itemType` property

### Added
- `token` property

## SyncItem struct
### Added
- A constructor `init(videoId:, license: )`

## KKSLicense & KKSLicenseTime

### Added
- A constructor `init` in KKSLicense
- A constructor `init` in KKSLicenseTime

## KKSDataManager

### Removed
- A useless protocol `DataManageable`
- A method `func buildStream(downloadItem: DownloadItemEntity) -> DownloadStream? `
- A method `func buildManifest(item: DownloadItemEntity) -> KKSManifestItem?`
- A method `func buildLicense(item: DownloadItemEntity) -> KKSLicense`

## Season

### Added
- static method `static func make(_ downloadInfo: ) -> Season`

## ManifestBuilder

### Added
- A extension method `func deletingPrefix(_ prefix: String) -> String`

## MediaPlayList

### Added
- A open property `uri` which will be presented the session-key value of manifest

## Asset
- Added a property `fairPlay`

## Download Changes
- `KKStream` is deprecated, `DownloadStream` instead
- `userId` is required
- `StateNotification` will be posted if download state did change
- `completeDownloadApiForRenew` & `completDownloadApiForDownload` has been mixed into `completDownloadApi`
- `token` will be added into `userInfo` if content key response is successful
- `DownloadItemEntity` becomes `Manual` from `Class Definition`
- A `fairPlay` property of `DownloadStream` is moved into `Asset`
- `Asset+AssetResourceLoaderDelegate.swift` was removed
- `ManifestParsable` protocol was removed, this extension method is moved into `Asset`