//
//  ExistingUserKycPresenter.swift
//  GME Remit
//
//  Created by Shiran on 8/18/20.
//Copyright © 2020 Gobal Money Express Co. Ltd. All rights reserved.
//

import RxSwift
import RxCocoa
import CoreLocation

class ExistingUserKycPresenter {
    
	// MARK: Properties
    enum Step: Int {
        case innerStep1
        case innerStep2
    }
    
    var interactor: ExistingUserKycInteractorInput?
    var wireframe: ExistingUserKycWireframeInput?
    
    struct Input {
        let viewWillAppear: Driver<Bool>
        let sendLocation: Driver<CLLocation>

        let sourceOfFund: Driver<KeyValue?>
        let occupation: Driver<KeyValue?>
        let monthlyIncome: Driver<String>
        let businessType: Driver<KeyValue?>
        let visaStatus: Driver<KeyValue?>
        let idType: Driver<KeyValue?>
        let purpose: Driver<KeyValue?>
        
        let employerName: Driver<String>
        let mobile: Driver<String>
        let email: Driver<String>
        let address: Driver<String>

        let isValidPersonalInfo: Driver<Bool>
        let personalInfoSave: Driver<Void>
        let editingPersonalInfo: Driver<Void>
        
        let frontIDImage: Driver<String?>
        let backIDImage: Driver<String?>
        let sideIDImage: Driver<String?>
        
        let isValidPictures: Driver<Bool>
        let editingPictureInfo: Driver<Void>
        
        let submit: Driver<Void>
    }
    
    struct Output {
        let isError: Driver<Error>
        let isProgress: Driver<Bool>
        let gpsAddress: Driver<String>
        let model: Driver<KYCInfoModel>
        
        let idTypes: Driver<[KeyValue]?>
        let purposes: Driver<[KeyValue]?>
        let busniessType: Driver<[KeyValue]?>
        let sourceOfFund: Driver<[KeyValue]?>
        let occupation: Driver<[KeyValue]?>
//        let monthlyIncome: Driver<[KeyValue]?>
        let visaStatus: Driver<[KeyValue]?>
        
        let isSetPersonalInfoModel: Driver<Bool>
        let isSetPictureInfoModel: Driver<Bool>
        let storePersonalSuccess: Driver<Bool>
        let storedSuccess: Driver<String>
    }
    
    private let disposeBag = DisposeBag()
    
    private let progressLinker = PublishSubject<Bool>()
    private let errorLinker = PublishSubject<Error>()
    private let gpsAddress = PublishSubject<String>()
    private let model = PublishSubject<KYCInfoModel>()
    
    private var storedPersonalInfo = PublishSubject<PersonalInfoModel?>()
    private var storedPictureInformation = PublishSubject<PictureInfoModel?>()
    private var storedPersonalSuccess = PublishSubject<String?>()
    private let storedSuccess = PublishSubject<String>()

    func transform(input: Input) -> Output {
        
        let newPicturesInfo = Driver.combineLatest(
            input.isValidPictures,
            input.frontIDImage,
            input.backIDImage,
            input.sideIDImage
        ).map { (isValid, frontIdImage, backIdImage, sideIdImage) -> PictureInfoModel? in
            return isValid ? PictureInfoModel(
                idFront: frontIdImage,
                idBack: backIdImage,
                idSide: sideIdImage,
                additionalId: nil,
                facePicture: nil,
                additionalIdBack: nil
                ) : nil
        }
        
        let newPersonalInfo = Driver.combineLatest(
            input.isValidPersonalInfo,
            input.idType,
            input.visaStatus,
            input.occupation,
            input.purpose,
            Driver.combineLatest(
                input.employerName,
                input.sourceOfFund,
                input.monthlyIncome,
                input.mobile,
                input.businessType,
                input.email,
                input.address,
                model.map{$0.personalInformation?.nativeCountry}.asDriverOnErrorJustComplete()
            ).map({ (employerName, sourceOfFund, monthlyIncome, mobile, businessType, email, address, nativeCountry) -> PersonalInfoModel in
                return PersonalInfoModel(
                    email: email,
                    address: address,
                    visaStatus: nil,
                    sourceOfFund: sourceOfFund?.id,
                    monthlyIncome: monthlyIncome,
                    mobile: mobile,
                    idType: nil,
                    additionalIdType: nil,
                    businessType: businessType?.id,
                    nativeCountry: nativeCountry,
                    employeerName: employerName,
                    occupation: nil,
                    purpose: nil,
                    isBackIDRequired: nil
                )
            })
        ).map { (isValid, idType, visaStatus, occupation, purpose, info) -> PersonalInfoModel? in
            if isValid{
                var personalInfo = info
                personalInfo.idType = idType?.id
                personalInfo.visaStatus = visaStatus?.id
                personalInfo.occupation = occupation?.id
                personalInfo.purpose  = purpose?.id
                return personalInfo
            }
            return nil
        }
        
        let isSetPersonalInformation = Driver
            .combineLatest(input.isValidPersonalInfo, storedPersonalInfo.asDriverOnErrorJustComplete())
            .map { $0 && $1 != nil }
        
        let isSetPictureInformation = Driver
            .combineLatest(input.isValidPictures, storedPictureInformation.asDriverOnErrorJustComplete())
            .map {$0 && $1 != nil}
        
        let storePersonalSuccess = Driver
            .combineLatest(input.isValidPersonalInfo, storedPersonalSuccess.asDriverOnErrorJustComplete())
            .map {$0 && $1 != nil}
        
        input.viewWillAppear.drive(onNext: { [weak self] (value) in
            self?.progressLinker.onNext(value)
            self?.interactor?.fetchInformation()
        }).disposed(by: disposeBag)
        
        input.sendLocation.drive(onNext: { [weak self] in
            self?.progressLinker.onNext(true)
            let geocoder = CLGeocoder()
            let locale = Locale(identifier: "en-US")
            
            geocoder.reverseGeocodeLocation($0, preferredLocale: locale) {(placemarks, error) in
                if let error = error {
                    self?.progressLinker.onNext(false)
                    self?.errorLinker.onNext(error)
                }
                
                if let address: [CLPlacemark] = placemarks {
                    let name = address.last?.name ?? ""
                    let locality = address.last?.locality ?? ""
                    self?.progressLinker.onNext(false)
                    
                    let mergedAddress = "\(name) \(locality)"//.extract(regex: "[A-Z0-9a-z\\s]")
                    self?.gpsAddress.onNext(mergedAddress)
                }
            }
            
        }).disposed(by: disposeBag)
        
        input.editingPersonalInfo
            .withLatestFrom(newPersonalInfo) { $1 }
            .withLatestFrom(storedPersonalInfo.asDriverOnErrorJustComplete()) {($0, $1)}
            .drive(onNext: {[weak self] in
                guard let new = $0, let stored = $1 else { return }
                if new != stored {
                    self?.storedPersonalInfo.onNext(nil)
                }
            })
            .disposed(by: disposeBag)
        
        input.editingPictureInfo
            .withLatestFrom(newPicturesInfo) { $1 }
            .withLatestFrom(storedPictureInformation.asDriverOnErrorJustComplete()) {($0, $1)}
            .drive(onNext: {[weak self] in
                guard let new = $0, let stored = $1 else { return }
                if new != stored {
                    self?.storedPictureInformation.onNext(nil)
                }
            })
            .disposed(by: disposeBag)
        
        input.personalInfoSave
            .withLatestFrom(newPersonalInfo) { $1 }
            .drive(onNext: {[weak self] in
                let saveModel = KYCSaveInformation(
                    type: Step.innerStep1.rawValue,
                    personalInformation: $0,
                    pictures: nil
                )
                self?.progressLinker.onNext(true)
                self?.interactor?.saveInformation(with: saveModel)
            }).disposed(by: disposeBag)
        
        input.submit
            .withLatestFrom(newPersonalInfo) { $1 }
            .withLatestFrom(newPicturesInfo) { ($0, $1) }
            .drive(onNext: {[weak self] in
                let saveModel = KYCSaveInformation(
                    type: Step.innerStep2.rawValue,
                    personalInformation: $0,
                    pictures: $1
                )
                self?.progressLinker.onNext(true)
                self?.interactor?.saveInformation(with: saveModel)
            }).disposed(by: disposeBag)
        
        return Output(
            isError: errorLinker.asDriverOnErrorJustComplete(),
            isProgress: progressLinker.asDriverOnErrorJustComplete(),
            gpsAddress: gpsAddress.asDriverOnErrorJustComplete(),
            model: model.asDriverOnErrorJustComplete(),
            idTypes: model.map {$0.idType}.asDriverOnErrorJustComplete(),
            purposes: model.map {$0.purpose}.asDriverOnErrorJustComplete(),
            busniessType: model.map {$0.businessType}.asDriverOnErrorJustComplete(),
            sourceOfFund: model.map {$0.sourceOfFund}.asDriverOnErrorJustComplete(),
            occupation: model.map {$0.occupation}.asDriverOnErrorJustComplete(),
//            monthlyIncome: model.map {$0.monthlyIncome}.asDriverOnErrorJustComplete(),
            visaStatus: model.map {$0.visaStatus}.asDriverOnErrorJustComplete(),
            isSetPersonalInfoModel: isSetPersonalInformation,
            isSetPictureInfoModel: isSetPictureInformation,
            storePersonalSuccess: storePersonalSuccess,
            storedSuccess: storedSuccess.asDriverOnErrorJustComplete()
        )
    }
}

// MARK: ExistingUserKyc interactor output interface

extension ExistingUserKycPresenter: ExistingUserKycInteractorOutput {
    func setModel(with model: KYCInfoModel) {
        progressLinker.onNext(false)
        self.model.onNext(model)
        guard let personalInformation = model.personalInformation, !personalInformation.isHasEmptyValue() else {
            storedPersonalInfo.onNext(nil)
            return
        }
        
        storedPersonalInfo.onNext(model.personalInformation)
        
        guard let pictures = model.pictures, !pictures.isHasEmptyValue() else {
            storedPictureInformation.onNext(nil)
            return
        }
        storedPictureInformation.onNext(pictures)
    }
    
    func setSaveResult(with storedModel: KYCSaveInformation?, message: String) {
        progressLinker.onNext(false)
        
        guard let storedModel = storedModel, let type = Step(rawValue: storedModel.type) else { return }
        switch type {
        case .innerStep1:
            storedPersonalInfo.onNext(storedModel.personalInformation)
            storedPersonalSuccess.onNext(message)
            DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
                self.storedPersonalSuccess.onNext(nil)
            }
            
        case .innerStep2:
            storedPictureInformation.onNext(storedModel.pictures)
            storedSuccess.onNext(message)
        }
    }
    
    func setError(with error: Error) {
        progressLinker.onNext(false)
        errorLinker.onNext(error)

    }
    
    
}