HomePresenter.swift

//
//  HomePresenter.swift
//  javapop
//
//  Created by Wesley Brito on 28/03/20.
//  Copyright © 2020 Wesley Brito. All rights reserved.
//

import Foundation

protocol HomePresenterDelegate: AnyObject {
    func repoFound(_ error: RequestErrors?)
}


class HomePresenter {
    var githubItens: [Item] = []
    
    weak var delegate: HomePresenterDelegate?
    
    // MARK: - Api Request
    func loadRepos(pageCount: Int = 1) {
        ServiceConnection().makeHTTPGetRequest(ServiceRepository.baseUrl(page: pageCount), Github.self) { (result, error) in
            self.githubItens += result?.items ?? []
            self.delegate?.repoFound(error)
        }
    }
    
    // MARK: - Get Infors
    func getAvatarUrl(_ index: Int) -> URL? {
        if let avatar = githubItens[index].owner?.avatarURL,
            let image = URL(string: avatar) {
            return image
        }
        return nil
    }
    
    func getUsername(_ index: Int) -> String {
        if let username = githubItens[index].owner?.login {
            return username
        }
        return ""
    }
    
    func getName(_ index: Int) -> String {
        return githubItens[index].name
    }
    
    func getDescription(_ index: Int) -> String {
        return githubItens[index].itemDescription
    }
    
    func getForkCount(_ index: Int) -> String {
        return "\(githubItens[index].forksCount)"
    }
    
    func getStarsCount(_ index: Int) -> String {
        return "\(githubItens[index].stargazersCount)"
    }
    
    func getFullName(_ index: Int) -> String {
        return githubItens[index].fullName
    }
    
    func getHtmlUrl(_ index: Int) -> String {
        return githubItens[index].htmlURL
    }
    
    func getItensCount() -> Int {
        return githubItens.count
    }
    
    // MARK: - Filter
    func filterRepo(searchText: String = "", sort: SortType = .Star) {
        if !searchText.isEmpty {
            let filtered = githubItens.filter{
                ($0.name.range(of: searchText, options: .caseInsensitive) != nil) ||
                    ($0.owner!.login.range(of: searchText, options: .caseInsensitive) != nil)
            }
            self.githubItens = []
            self.githubItens = filtered
        } else if sort == .Star {
            let filtered = githubItens.sorted { $0.stargazersCount > $1.stargazersCount }
            self.githubItens = []
            self.githubItens = filtered
        } else {
            let filtered = githubItens.sorted { $0.name.lowercased() < $1.name.lowercased() }
            self.githubItens = []
            self.githubItens = filtered
        }
    }
    
    func searchTextIsValid(text: String) -> Bool {
        if text.count < 30 {
            return true
        } else {
            return false
        }
    }
    
}