//
//  EmergencyContactAddView.swift
//  QuickLocation
//
//  Created by 八条 on 2026/6/11.
//

import UIKit
import RxSwift
import RxCocoa

class EmergencyContactAddView: UIView {

    var disposeBag = DisposeBag()

    private func setupRx() {
        nameTF.rx.text
            .map { text -> String? in
                guard let text = text else { return nil }
                return String(text.prefix(10))
            }.bind(to: nameTF.rx.text)
            .disposed(by: disposeBag)

        phoneTF.rx.text
            .map { text -> String? in
                guard let text = text else { return nil }
                return String(text.filter { $0.isASCII && $0.isNumber }.prefix(11))
            }.bind(to: phoneTF.rx.text)
            .disposed(by: disposeBag)

        let valid = Observable.combineLatest(nameTF.rx.text.orEmpty, phoneTF.rx.text.orEmpty)
            .map { name, phone in
                !name.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty && phone.count == 11
            }
            .share(replay: 1)
        valid.bind(to: saveBtn.rx.isEnabled).disposed(by: disposeBag)
        valid.map { $0 ? 1.0 : 0.5 }.bind(to: saveBtn.rx.alpha).disposed(by: disposeBag)

        nameRow.rx.tapGesture.subscribe(onNext: { [weak self] _ in
            self?.nameTF.becomeFirstResponder()
        }).disposed(by: disposeBag)
        phoneRow.rx.tapGesture.subscribe(onNext: { [weak self] _ in
            self?.phoneTF.becomeFirstResponder()
        }).disposed(by: disposeBag)
    }

    private func setupUI() {
        addSubview(navBgView)
        addSubview(navView)
        addSubview(cardView)
        addSubview(saveBtn)

        navBgView.layoutChain
            .edges(excludingEdge: .bottom)
            .heightToWidth(160 / 375)

        navView.layoutChain
            .edges(excludingEdge: .bottom)
            .height(kNaviHeight)

        cardView.layoutChain
            .topToBottomOfView(navView, offset: 16)
            .edgesHorzontal(15)

        saveBtn.layoutChain
            .edgesHorzontal(30)
            .bottom(kSafeBottomMargin + 12)
            .height(56)
    }

    lazy var navBgView: UIImageView = {
        let iv = UIImageView()
        iv.image = UIImage(named: "Common/navBar_bg_2")
        iv.contentMode = .scaleAspectFill
        return iv
    }()

    lazy var navView: BaseNavigationView = {
        BaseNavigationView(title: "添加紧急联系人")
    }()

    lazy var cardView: UIView = {
        let view = UIView()
        view.backgroundColor = .white
        view.cornerRadius = 16

        view.addSubview(nameRow)
        nameRow.layoutChain
            .top()
            .edgesHorzontal()
            .height(56)

        let line = UIView()
        line.backgroundColor = UIColor(hexStr: "#F0F2F5")
        view.addSubview(line)
        line.layoutChain
            .topToBottomOfView(nameRow)
            .left(16)
            .right(16)
            .height(0.5)

        view.addSubview(phoneRow)
        phoneRow.layoutChain
            .topToBottomOfView(line)
            .edgesHorzontal()
            .bottom()
            .height(56)

        return view
    }()

    lazy var nameRow: UIView = {
        makeInputRow(title: "姓名", textField: nameTF, arrow: nameArrow)
    }()

    lazy var phoneRow: UIView = {
        makeInputRow(title: "手机号", textField: phoneTF, arrow: phoneArrow)
    }()

    lazy var nameTF: UITextField = {
        let textField = UITextField()
        textField.returnKeyType = .done
        textField.textAlignment = .right
        textField.placeholder = "请输入姓名"
        textField.font = .systemFont(ofSize: 15, weight: .regular)
        textField.textColor = UIColor(hexStr: "#0F2846")
        textField.attributedPlaceholder = NSAttributedString(
            string: "请输入姓名",
            attributes: [.foregroundColor: UIColor(hexStr: "#C5CAD3")]
        )
        return textField
    }()

    lazy var phoneTF: UITextField = {
        let textField = UITextField()
        textField.keyboardType = .numberPad
        textField.returnKeyType = .done
        textField.textAlignment = .right
        textField.font = .systemFont(ofSize: 15, weight: .regular)
        textField.textColor = UIColor(hexStr: "#0F2846")
        textField.attributedPlaceholder = NSAttributedString(
            string: "请输入手机号",
            attributes: [.foregroundColor: UIColor(hexStr: "#C5CAD3")]
        )
        return textField
    }()

    lazy var nameArrow: UIImageView = {
        makeArrow()
    }()

    lazy var phoneArrow: UIImageView = {
        makeArrow()
    }()

    lazy var saveBtn: UIButton = {
        let btn = UIButton(type: .custom)
        btn.setTitle("保存", for: .normal)
        btn.titleLabel?.font = FontManager.boboBold(18)
        btn.setTitleColor(.white, for: .normal)
        btn.setBackgroundImage(UIImage(named: "Common/button_bg_2"), for: .normal)
        btn.cornerRadius = 20
        btn.isEnabled = false
        return btn
    }()

    private func makeInputRow(title: String, textField: UITextField, arrow: UIImageView) -> UIView {
        let view = UIView()
        view.backgroundColor = .clear

        let titleLab = UILabel()
        titleLab.text = title
        titleLab.font = .systemFont(ofSize: 16, weight: .medium)
        titleLab.textColor = UIColor(hexStr: "#0F2846")
        view.addSubview(titleLab)
        titleLab.layoutChain
            .left(16)
            .centerY()

        view.addSubview(arrow)
        arrow.layoutChain
            .right(16)
            .centerY()
            .width(16)
            .height(16)

        view.addSubview(textField)
        textField.layoutChain
            .left(88)
            .rightToLeftOfView(arrow, offset: -6)
            .edgesVertical()
        return view
    }

    private func makeArrow() -> UIImageView {
        let view = UIImageView(image: UIImage(named: "EmergencyContact/arrow_right"))
        view.contentMode = .scaleAspectFit
        return view
    }

    override init(frame: CGRect) {
        super.init(frame: .zero)
        backgroundColor = UIColor(hexStr: "#F7F8FA")
        setupUI()
        setupRx()
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
}