import { SetStorageSuccess, SetStorageOptions, SetStorage, SetStorageSync, GetStorageSuccess, GetStorageOptions, GetStorage, GetStorageSync, GetStorageInfoSuccess, GetStorageInfoOptions, GetStorageInfo, GetStorageInfoSync, RemoveStorageSuccess, RemoveStorageOptions, RemoveStorage, RemoveStorageSync, ClearStorage, ClearStorageSync, ClearStorageOptions, ClearStorageSuccess} from "../interface.uts"
import { Storage, StorageManager } from "storage"  assert { type: "implementationOnly" };
import { UTSiOS, dc_storage_aes_key, dc_storage_path_component, dc_storage_old_path_component } from "DCloudUTSFoundation";
import { NSDictionary, URL, FileManager, PropertyListSerialization, NSData, NSKeyedUnarchiver } from 'Foundation';
import { uni_getStorageAsync, uni_getStorageSync, uni_setStorageAsync, uni_setStorageSync } from "../uniStorageTool.uts"


class StorageTool {
	protected static storage: Storage | null
	
	private static migrateStorage(storage: Storage) {
		 let dataPath = UTSiOS.getDataPath()
		 const oldPath = new URL(fileURLWithPath = dataPath).appendingPathComponent(dc_storage_old_path_component).absoluteString
		 let content: any | null = null
		 
		 if (FileManager.default.fileExists(atPath = oldPath)) {
		 	let data = FileManager.default.contents(atPath = oldPath)
			if (data != null) {
				content = PropertyListSerialization.propertyListFromData(data!, mutabilityOption = [PropertyListSerialization.MutabilityOptions.mutableContainersAndLeaves], format = null, errorDescription = null)
			}
			try {
				UTSiOS.try(FileManager.default.removeItem(atPath = oldPath))
			} catch (e) {
				// console.log(e)
			}
		 } else{
			const path = new URL(fileURLWithPath = dataPath).appendingPathComponent(dc_storage_path_component).absoluteString
			let inputData = NSData.init(contentsOfFile = path)
			if ( inputData != null ) {
				let input  = inputData! as Data
				let data = UTSiOS.dc_AESDecrypt(data = input, key = dc_storage_aes_key)
				if (data != null) {
					content = NSKeyedUnarchiver.unarchiveObject(with = data!)
				}
			} 
			try {
				UTSiOS.try(FileManager.default.removeItem(atPath = path))
			} catch (e) {
				// console.log(e)
			}
		 }
		 if (content != null ) {
		 	let contentDic = UTSiOS.convertDictionary(content!)
		 	if (contentDic.isEmpty == false) {
				 let dic = new NSDictionary(dictionary = contentDic)
				let i = 0
				while (i  < dic.allKeys.length){
					let key = dic.allKeys[i]
					if (key != null && typeof key == "string") {
						let value = dic.value(forKey = key as string)
						if (value != null && typeof value == "string") {
							storage.setItem(key as string, value = value as string, callback = null)
						}
					}
					i++
				}
		 	}
		 }
	}
	
	protected static getStorage(): Storage {
		if (this.storage != null) {
			return this.storage!
		} 
		const domain: string = UTSiOS.getAppId()
		let storage: Storage | null = null
	    storage = StorageManager.storage(withDomain = domain)
		if (this.storage == null) {
			storage = StorageManager.activeStorage(withDomain = domain)
			const path = UTSiOS.getDataPath()
			storage!.rootPath = path
			this.migrateStorage(storage!)
		} 
		this.storage = storage
		return storage!  
	}
	
}  



export const setStorage: SetStorage = function (options: SetStorageOptions) {
	setTimeout(() => {
		uni_setStorageAsync(options, (itemKey: string, itemData: string) => {
			StorageTool.getStorage().setItemPersistent(itemKey, value = itemData, callback = null)
		}, (itemKey: string) => {
			StorageTool.getStorage().removeItem(itemKey, callback = null)
		})  
	}, 0)
}

export const setStorageSync: SetStorageSync = function (key: string, data: any) {
	uni_setStorageSync(key, data, (itemKey: string, itemValue: string) => {
		StorageTool.getStorage().setItemPersistent(itemKey, value = itemValue, callback = null)
	}, (itemKey: string) => {
		StorageTool.getStorage().removeItem(itemKey, callback = null)
	})
}

function getItemAsync(itemKey: string): string | null {
	return StorageTool.getStorage().getItem(itemKey, callback = null)
}

function includeKey(key: string): boolean {
	let storage = StorageTool.getStorage()
	let list = storage.getAllKeys()
	if (list != null) {
		let item = list!.find((value): boolean => {
			if (typeof value == "string") {  
				return (value as string) == key;
			}
			return false;
		})
		return (item != null);
	} 
	return false;
}

export const getStorage: GetStorage = function (options: GetStorageOptions) {
	setTimeout(() => {
		uni_getStorageAsync(options, getItemAsync, includeKey)
	}, 0);
}

export const getStorageSync: GetStorageSync = function (key: string): any {
	return uni_getStorageSync(key, getItemAsync)
}

export const getStorageInfo: GetStorageInfo = function (options: GetStorageInfoOptions) {
	setTimeout(() => {
		const storage = StorageTool.getStorage()
		const allKeys = storage.getAllKeys()
		const length = storage.length()
		const limitSize = 1.7976931348623157e+308
		
		const success: GetStorageInfoSuccess = {
			keys: allKeys,
			currentSize: length,
			limitSize: limitSize
		}
		options.success?.(success)
		options.complete?.(success)
	}, 0);
}

export const getStorageInfoSync: GetStorageInfoSync = function () : GetStorageInfoSuccess {
	const storage = StorageTool.getStorage()
	const allKeys = storage.getAllKeys()
	const length = storage.length()
	const limitSize = 1.7976931348623157e+308
	
	const success: GetStorageInfoSuccess = {
		keys: allKeys,
		currentSize: length,
		limitSize: limitSize
	}
	return success
}

export const removeStorage: RemoveStorage = function (options: RemoveStorageOptions) {
	setTimeout(() => {
		StorageTool.getStorage().removeItem(options.key, callback = null)
		let success: RemoveStorageSuccess = {	
		}
		options.success?.(success)
		options.complete?.(success)
	}, 0);

}

export const removeStorageSync: RemoveStorageSync = function (key: string) {
	StorageTool.getStorage().removeItem(key, callback = null)
}

export const clearStorage: ClearStorage = function (option: ClearStorageOptions | null) {
	setTimeout(() => {
		StorageTool.getStorage().clear()
		let success: ClearStorageSuccess = {
		}
		if (option != null) {
			option!.success?.(success)
			option!.complete?.(success)
		}
	}, 0);
	
}

export const clearStorageSync: ClearStorageSync = function () {
	StorageTool.getStorage().clear()
}