//
//  LNBaseInfoSetupViewController.swift
//  Lanu
//
//  Created by OneeChan on 2025/12/2.
//

import Foundation
import UIKit
import SnapKit
import Combine


extension UIView {
    func pushToBaseInfoSetup(_ config: LNProfileUpdateConfig) {
        let vc = LNBaseInfoSetupViewController(config: config)
        navigationController?.pushViewController(vc, animated: true)
    }
}

enum LNAvatarModifyType: CaseIterable {
    case camera
    case photo
    case random
    
    var title: String {
        switch self {
        case .camera: .init(key: "A00011")
        case .photo: .init(key: "A00012")
        case .random: .init(key: "A00100")
        }
    }
}

class LNBaseInfoSetupViewController: LNViewController {
    private let updateConfig: LNProfileUpdateConfig
    
    private let container = UIView()
    private let avatar = LNImageUploadView()
    private let nameInputField = UITextField()
    private let randomView = UIView()
    
//    private let birthDayLabel = UILabel()
//    private var curDate: TimeInterval = Date().yearAgo(-18).timeIntervalSince1970 {
//        didSet {
//            birthDayLabel.text = curDate.formattedFullDate("-")
//        }
//    }
    
    private let nextButton = UIButton()
    
    private var randomProfile: LNProfileRandomInfoVO?
    
    init(config: LNProfileUpdateConfig) {
        updateConfig = config
        super.init(nibName: nil, bundle: nil)
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        setupViews()
        loadRandomProfile()
        LNEventDeliver.addObserver(self)
    }
}

extension LNBaseInfoSetupViewController {
    private func changeAvatar() {
        let handler: (UIImage?, URL?) -> Void = { [weak self] image, _ in
            guard let self, let image = image?.compress(type: .avatar) else { return }
            avatar.uploadImage(image: image)
            checkNextButtonEnable()
        }
        let panel = LNBottomSheetMenu()
        var titles: [String] = [
            LNAvatarModifyType.camera.title,
            LNAvatarModifyType.photo.title,
        ]
        if randomProfile?.avatars.isEmpty == false {
            titles.append(LNAvatarModifyType.random.title)
        }
        panel.update(titles) { [weak self] index, text in
            guard let self else { return }
            if index == 0 {
                LNMediaPicker.shared.pick(from: view, type: .camera, options: .init(allowEdit: true), handler: handler)
            } else if index == 1 {
                LNMediaPicker.shared.pick(from: view, type: .photo, options: .init(allowEdit: true), handler: handler)
            } else if index == 2 {
                guard let item = randomProfile?.avatars.randomElement() else { return }
                avatar.loadImage(url: item)
                checkNextButtonEnable()
            }
        }
        panel.popup()
    }
    
    private func loadRandomProfile() {
        LNProfileManager.shared.getRandomProfile { [weak self] male, female in
            guard let self else { return }
            
            if updateConfig.gender == .male, let male {
                randomProfile = male
                randomView.isHidden = male.nicknames.isEmpty
            } else if updateConfig.gender == .female, let female {
                randomProfile = female
                randomView.isHidden = female.nicknames.isEmpty
            }
            
            if let url = randomProfile?.avatars.randomElement() {
                avatar.loadImage(url: url)
            }
            nameInputField.text = randomProfile?.nicknames.randomElement()
            
            checkNextButtonEnable()
        }
    }
}

extension LNBaseInfoSetupViewController: LNImageUploadViewDelegate {
    func onImageUploadViewStartUpload(view: LNImageUploadView) {
        checkNextButtonEnable()
    }
    
    func onImageUploadView(view: LNImageUploadView, didUploadImage url: String) {
        checkNextButtonEnable()
    }
}

extension LNBaseInfoSetupViewController: LNKeyboardNotify {
    func onKeyboardWillShow(curInput: UIView?, keyboardHeight: CGFloat) {
        guard let curInput, curInput.isDescendant(of: view) else { return }
        
        let frame = curInput.convert(curInput.frame, to: view)
        let offset = keyboardHeight - (view.bounds.height - CGRectGetMaxY(frame) - 20)
        if offset > 0 {
            container.snp.updateConstraints { make in
                make.top.equalToSuperview().offset(-offset)
            }
        }
    }
    
    func onKeyboardShow(curInput: UIView?, keyboardHeight: CGFloat) {
        guard curInput == nameInputField else { return }
        
        view.layoutIfNeeded()
    }
    
    func onKeyboardWillHide(curInput: UIView?) {
        guard curInput == nameInputField else { return }
        
        container.snp.updateConstraints { make in
            make.top.equalToSuperview().offset(0)
        }
    }
    
    func onKeyboardHide(curInput: UIView?) {
        guard curInput == nameInputField else { return }
        
        view.layoutIfNeeded()
    }
}

extension LNBaseInfoSetupViewController {
    private func checkNextButtonEnable() {
        let name = nameInputField.text ?? ""
        nextButton.isEnabled = !name.isEmpty && avatar.imageUrl?.isEmpty == false
    }
    
    private func setupViews() {
        navigationBarColor = .clear
        view.backgroundColor = .primary_1
        
        view.addSubview(container)
        container.onTap { [weak self] in
            guard let self else { return }
            self.view.endEditing(true)
        }
        container.snp.makeConstraints { make in
            make.top.equalToSuperview().offset(0)
            make.horizontalEdges.equalToSuperview()
            make.height.equalToSuperview()
        }
        
        let bg = UIImageView()
        bg.image = .icLoginProfileBg
        container.addSubview(bg)
        bg.snp.makeConstraints { make in
            make.horizontalEdges.equalToSuperview()
            make.top.equalTo(fakeNaviBgView)
        }
        
        let titleView = buildTitles()
        container.addSubview(titleView)
        titleView.snp.makeConstraints { make in
            make.horizontalEdges.equalToSuperview().inset(22)
            make.top.equalToSuperview().offset(22)
        }
        
        let baseInfo = buildBaseInfoView()
        container.addSubview(baseInfo)
        baseInfo.snp.makeConstraints { make in
            make.centerY.equalToSuperview().multipliedBy(0.8)
            make.horizontalEdges.equalToSuperview().inset(22)
        }
        
        nextButton.setBackgroundImage(.primary_8, for: .normal)
        nextButton.setTitle(.init(key: "A00101"), for: .normal)
        nextButton.setTitleColor(.text_1, for: .normal)
        nextButton.titleLabel?.font = .heading_h3
        nextButton.layer.cornerRadius = 23.5
        nextButton.clipsToBounds = true
        nextButton.isEnabled = false
        nextButton.addAction(UIAction(handler: { [weak self] _ in
            guard let self else { return }
            updateConfig.nickName = nameInputField.text ?? ""
//            updateConfig.birthday = curDate.formattedFullDate("-", normal: true)
            updateConfig.avatar = avatar.imageUrl ?? ""
            view.pushToInterestSetup(updateConfig)
        }), for: .touchUpInside)
        container.addSubview(nextButton)
        nextButton.snp.makeConstraints { make in
            make.horizontalEdges.equalToSuperview().inset(16)
            make.bottom.equalTo(view.safeAreaLayoutGuide.snp.bottom).offset(-4)
            make.height.equalTo(47)
        }
    }
    
    private func buildTitles() -> UIView {
        let stackView = UIStackView()
        stackView.axis = .vertical
        stackView.spacing = 6
        
        let mainLabel = UILabel()
        mainLabel.text = .init(key: "A00102")
        mainLabel.font = .init(name: UIFont.boldFontName, size: 40)
        mainLabel.textColor = .text_5
        mainLabel.numberOfLines = 0
        stackView.addArrangedSubview(mainLabel)
        
        let subTitleLabel = UILabel()
        subTitleLabel.text = .init(key: "A00103")
        subTitleLabel.font = .heading_h1
        subTitleLabel.numberOfLines = 0
        stackView.addArrangedSubview(subTitleLabel)
        
        return stackView
    }
    
    private func buildBaseInfoView() -> UIView {
        let container = UIView()
        
        let avatar = buildAvatar()
        container.addSubview(avatar)
        avatar.snp.makeConstraints { make in
            make.centerX.equalToSuperview()
            make.top.equalToSuperview()
        }
        
        let name = buildNickName()
        container.addSubview(name)
        name.snp.makeConstraints { make in
            make.horizontalEdges.equalToSuperview()
            make.top.equalTo(avatar.snp.bottom).offset(16)
            make.bottom.equalToSuperview()
        }
        
//        let birthDay = buildBirthDay()
//        container.addSubview(birthDay)
//        birthDay.snp.makeConstraints { make in
//            make.horizontalEdges.equalToSuperview()
//            make.top.equalTo(name.snp.bottom).offset(22)
//            make.bottom.equalToSuperview()
//        }
        
        return container
    }
    
    private func buildAvatar() -> UIView {
        let container = UIView()
        
        avatar.uploadType = .avatar
        avatar.image = .icProfileLoginAvatar
        avatar.layer.borderColor = UIColor.fill.cgColor
        avatar.layer.borderWidth = 2
        avatar.layer.cornerRadius = 60
        avatar.clipsToBounds = true
        avatar.delegate = self
        avatar.onTap { [weak self] in
            guard let self else { return }
            changeAvatar()
        }
        container.addSubview(avatar)
        avatar.snp.makeConstraints { make in
            make.width.height.equalTo(120)
            make.edges.equalToSuperview()
        }
        
        let editAvatar = UIButton()
        editAvatar.setImage(.icLogonAvatarEdit, for: .normal)
        editAvatar.addAction(UIAction(handler: { [weak self] _ in
            guard let self else { return }
            changeAvatar()
        }), for: .touchUpInside)
        container.addSubview(editAvatar)
        editAvatar.snp.makeConstraints { make in
            make.trailing.bottom.equalToSuperview()
        }
        
        return container
    }
    
    private func buildNickName() -> UIView {
        let container = UIView()
        container.backgroundColor = .fill
        container.layer.cornerRadius = 26
        container.snp.makeConstraints { make in
            make.height.equalTo(52)
        }
        
        randomView.isHidden = true
        container.addSubview(randomView)
        randomView.snp.makeConstraints { make in
            make.verticalEdges.equalToSuperview()
            make.trailing.equalToSuperview().offset(-16)
        }
        
        let config = UIImage.SymbolConfiguration(pointSize: 16)
        let refresh = UIButton()
        refresh.setImage(.init(systemName: "arrow.clockwise", withConfiguration: config), for: .normal)
        refresh.tintColor = .text_3
        refresh.addAction(UIAction(handler: { [weak self] _ in
            guard let self else { return }
            guard let randomProfile else { return }
            nameInputField.text = randomProfile.nicknames.randomElement()
            checkNextButtonEnable()
        }), for: .touchUpInside)
        randomView.addSubview(refresh)
        refresh.snp.makeConstraints { make in
            make.centerY.equalToSuperview()
            make.trailing.equalToSuperview()
            make.width.equalTo(17)
        }
        
        let random = UILabel()
        random.text = .init(key: "A00104")
        random.font = .body_m
        random.textColor = .text_3
        random.setContentHuggingPriority(.defaultHigh, for: .horizontal)
        random.setContentCompressionResistancePriority(.defaultHigh, for: .horizontal)
        randomView.addSubview(random)
        random.snp.makeConstraints { make in
            make.centerY.equalToSuperview()
            make.trailing.equalTo(refresh.snp.leading).offset(-6)
            make.leading.equalToSuperview()
        }
        
        nameInputField.textColor = .text_5
        nameInputField.font = .heading_h3
        nameInputField.attributedPlaceholder = .init(
            string: .init(key: "A00105"),
            attributes: [
                .font: UIFont.body_l,
                .foregroundColor: UIColor.text_2
            ]
        )
        nameInputField.addAction(UIAction(handler: { [weak self] _ in
            guard let self else { return }
            checkNextButtonEnable()
        }), for: .editingChanged)
        container.addSubview(nameInputField)
        nameInputField.snp.makeConstraints { make in
            make.verticalEdges.equalToSuperview()
            make.leading.equalToSuperview().offset(16)
            make.trailing.equalTo(randomView.snp.leading).offset(-6)
        }
        
        return container
    }
    
//    private func buildBirthDay() -> UIView {
//        let container = UIView()
//        container.backgroundColor = .fill
//        container.layer.cornerRadius = 26
//        container.snp.makeConstraints { make in
//            make.height.equalTo(52)
//        }
//        container.onTap { [weak self] in
//            guard let self else { return }
//            let panel = LNBirthdayDatePickerPanel()
//            panel.setDefault(curDate)
//            panel.handler = { [weak self] date in
//                guard let self else { return }
//                curDate = date
//            }
//            panel.showIn(view)
//        }
//        
//        let config = UIImage.SymbolConfiguration(pointSize: 6)
//        let arrow = UIImageView()
//        arrow.image = .init(systemName: "arrowtriangle.down.fill", withConfiguration: config)
//        arrow.tintColor = .text_5
//        container.addSubview(arrow)
//        arrow.snp.makeConstraints { make in
//            make.centerY.equalToSuperview()
//            make.trailing.equalToSuperview().offset(-16)
//        }
//        
//        birthDayLabel.text = curDate.formattedFullDate("-")
//        birthDayLabel.font = .body_l
//        birthDayLabel.textColor = .text_5
//        container.addSubview(birthDayLabel)
//        birthDayLabel.snp.makeConstraints { make in
//            make.centerY.equalToSuperview()
//            make.leading.equalToSuperview().offset(16)
//        }
//        
//        return container
//    }
}

#if DEBUG

import SwiftUI

struct LNBaseInfoSetupViewControllerPreview: UIViewControllerRepresentable {
    func makeUIViewController(context: Context) -> some UIViewController {
        LNBaseInfoSetupViewController(config: LNProfileUpdateConfig())
    }
    
    func updateUIViewController(_ uiViewController: UIViewControllerType, context: Context) {
        
    }
}

#Preview(body: {
    LNBaseInfoSetupViewControllerPreview()
})
#endif