//
//  CookbookState.swift
//  Nextcloud Cookbook iOS Client
//
//  Created by Vincent Meilinger on 29.05.24.
//

import Foundation
import SwiftUI
/*

@Observable 
class CookbookState {
    /// Caches recipe categories.
    var categories: [Category] = []
    
    /// Caches RecipeStubs.
    var recipeStubs: [String: [RecipeStub]] = [:]
    
    /// Caches Recipes by recipe id.
    var recipes: [String: Recipe] = [:]
    
    /// Caches recipe thumbnails by recipe id.
    var thumbnails: [String: UIImage] = [:]
    
    /// Caches recipe images by recipe id.
    var images: [String: UIImage] = [:]
    
    /// Caches recipe keywords.
    var keywords: [RecipeKeyword] = []
    
    /// Read and write interfaces.
    var localReadInterface: ReadInterface
    var localWriteInterface: WriteInterface
    var remoteReadInterface: ReadInterface?
    var remoteWriteInterface: WriteInterface?
        
    /// UI state variables
    var selectedCategory: Category? = nil
    var selectedRecipeStub: RecipeStub? = nil
    var showSettings: Bool = false
    var showGroceries: Bool = false
    
    /// Grocery List
    var groceryList = GroceryList()
    
    init(
        localReadInterface: ReadInterface,
        localWriteInterface: WriteInterface,
        remoteReadInterface: ReadInterface? = nil,
        remoteWriteInterface: WriteInterface? = nil
        
    ) {
        self.localReadInterface = localReadInterface
        self.localWriteInterface = localWriteInterface
        self.remoteReadInterface = remoteReadInterface
        self.remoteWriteInterface = remoteWriteInterface
    }
    
    init() {
        let accountLoader = AccountLoader()
        rI, wI = accountLoader.load
            
    }
}


extension CookbookState {
    func loadCategories(remoteFirst: Bool = false) async {
        if remoteFirst {
            if let remoteReadInterface, let categories = await remoteReadInterface.getCategories() {
                self.categories = categories
                return
            }
            
            if let categories = await localReadInterface.getCategories() {
                self.categories = categories
                return
            }
        } else {
            if let categories = await localReadInterface.getCategories() {
                self.categories = categories
                return
            }
            
            guard let remoteReadInterface else { return }
            if let categories = await remoteReadInterface.getCategories() {
                self.categories = categories
                return
            }
        }
    }
    
    func loadRecipeStubs(category: String, remoteFirst: Bool = false) async {
        if remoteFirst {
            if let remoteReadInterface, let stubs = await remoteReadInterface.getRecipeStubs() {
                self.recipeStubs[category] = stubs
                return
            }
            
            if let stubs = await localReadInterface.getRecipeStubs() {
                self.recipeStubs[category] = stubs
                return
            }
        } else {
            if let stubs = await localReadInterface.getRecipeStubs() {
                self.recipeStubs[category] = stubs
                return
            }
            
            guard let remoteReadInterface else { return }
            if let stubs = await remoteReadInterface.getRecipeStubs() {
                self.recipeStubs[category] = stubs
                return
            }
        }
    }
    
    func loadKeywords(remoteFirst: Bool = false) async {
        if remoteFirst {
            if let remoteReadInterface, let keywords = await remoteReadInterface.getTags() {
                self.keywords = keywords
                return
            }
            
            if let keywords = await localReadInterface.getTags() {
                self.keywords = keywords
                return
            }
        } else {
            if let keywords = await localReadInterface.getTags() {
                self.keywords = keywords
                return
            }
            
            guard let remoteReadInterface else { return }
            if let keywords = await remoteReadInterface.getTags() {
                self.keywords = keywords
                return
            }
        }
    }
    
    func loadRecipe(id: String, remoteFirst: Bool = false) async {
        if remoteFirst {
            if let remoteReadInterface, let recipe = await remoteReadInterface.getRecipe(id: id) {
                self.recipes[id] = recipe
                return
            }
            
            if let recipe = await localReadInterface.getRecipe(id: id) {
                self.recipes[id] = recipe
                return
            }
        } else {
            if let recipe = await localReadInterface.getRecipe(id: id) {
                self.recipes[id] = recipe
                return
            }
            
            guard let remoteReadInterface else { return }
            if let recipe = await remoteReadInterface.getRecipe(id: id) {
                self.recipes[id] = recipe
                return
            }
        }
    }
}



class AccountLoader {
    func initInterfaces() async -> [ReadInterface & WriteInterface] {
        let accounts = await self.loadAccounts("accounts.data")
        
        if accounts.isEmpty && UserSettings.shared.serverAddress != "" {
            print("Creating new Account from legacy Cookbook client account.")
            let auth = Authentication(
                baseUrl: UserSettings.shared.serverAddress,
                user: UserSettings.shared.username,
                token: UserSettings.shared.authString
            )
            let authKey = "legacyNextcloud"
            let legacyAccount = Account(
                id: UUID(),
                name: "Nextcloud",
                type: .nextcloud,
                apiVersion: "1.0",
                authKey: authKey
            )
            await saveAccounts([legacyAccount], "accounts.data")
            legacyAccount.storeAuth(auth)
            
            let interface = NextcloudDataInterface(auth: auth, version: legacyAccount.apiVersion)
            return [interface]
        } else {
            print("Recovering existing accounts.")
            var interfaces: [ReadInterface & WriteInterface] = []
            for account in accounts {
                if let interface: CookbookInterface = account.getInterface() {
                    interfaces.append(interface)
                }
            }
            return interfaces
        }
    }
    
    func loadAccounts(_ path: String) async -> [Account] {
        do {
            return try await DataStore.shared.load(fromPath: path) ?? []
        } catch (let error) {
            print(error)
            return []
        }
    }
    
    func saveAccounts(_ accounts: [Account], _ path: String) async {
        await DataStore.shared.save(data: accounts, toPath: path)
    }
}

*/