//
//  CooperationOrderViews.swift
//  suixinkan
//

import Kingfisher
import SnapKit
import UIKit

/// 合作订单 Tab 切换栏。
final class CooperationOrderTabBar: UIView {

    var onTabSelected: ((Int) -> Void)?

    private let stack = UIStackView()
    private var buttons: [UIButton] = []
    private var selectedIndex = 0
    private let indicator = UIView()

    override init(frame: CGRect) {
        super.init(frame: frame)
        backgroundColor = .white
        stack.axis = .horizontal
        stack.distribution = .fillEqually
        addSubview(stack)
        addSubview(indicator)
        indicator.backgroundColor = AppColor.primary
        indicator.layer.cornerRadius = 1.5

        ["获客员线索", "获客订单"].enumerated().forEach { index, title in
            let button = UIButton(type: .system)
            button.setTitle(title, for: .normal)
            button.titleLabel?.font = .systemFont(ofSize: 15, weight: index == 0 ? .bold : .regular)
            button.setTitleColor(index == 0 ? AppColor.primary : AppColor.textSecondary, for: .normal)
            button.tag = index
            button.addTarget(self, action: #selector(tabTapped(_:)), for: .touchUpInside)
            buttons.append(button)
            stack.addArrangedSubview(button)
        }

        stack.snp.makeConstraints { make in
            make.edges.equalToSuperview()
            make.height.equalTo(48)
        }
        layoutIndicator(animated: false)
    }

    @available(*, unavailable)
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    func setSelectedTab(_ index: Int) {
        guard selectedIndex != index else { return }
        selectedIndex = index
        updateButtonStyles()
        layoutIndicator(animated: true)
    }

    @objc private func tabTapped(_ sender: UIButton) {
        setSelectedTab(sender.tag)
        onTabSelected?(sender.tag)
    }

    private func updateButtonStyles() {
        buttons.enumerated().forEach { index, button in
            let selected = index == selectedIndex
            button.setTitleColor(selected ? AppColor.primary : AppColor.textSecondary, for: .normal)
            button.titleLabel?.font = .systemFont(ofSize: 15, weight: selected ? .bold : .regular)
        }
    }

    private func layoutIndicator(animated: Bool) {
        guard !buttons.isEmpty else { return }
        let button = buttons[selectedIndex]
        let apply = {
            self.indicator.snp.remakeConstraints { make in
                make.bottom.equalToSuperview()
                make.height.equalTo(3)
                make.width.equalTo(button.snp.width).multipliedBy(0.5)
                make.centerX.equalTo(button)
            }
            self.layoutIfNeeded()
        }
        if animated {
            UIView.animate(withDuration: 0.2, animations: apply)
        } else {
            apply()
        }
    }
}

/// 获客订单搜索栏。
final class CooperationOrderSearchBar: UIView, UITextFieldDelegate {

    var onSearchTextChange: ((String) -> Void)?
    var onSearch: (() -> Void)?

    let textField = UITextField()

    override init(frame: CGRect) {
        super.init(frame: frame)
        backgroundColor = .white

        let container = UIView()
        container.backgroundColor = AppColor.inputBackground
        container.layer.cornerRadius = AppRadius.sm

        let icon = UIImageView(image: UIImage(systemName: "magnifyingglass"))
        icon.tintColor = AppColor.textTertiary

        textField.placeholder = "名称搜索"
        textField.font = .systemFont(ofSize: 14)
        textField.textColor = AppColor.textPrimary
        textField.returnKeyType = .search
        textField.delegate = self
        textField.addTarget(self, action: #selector(textChanged), for: .editingChanged)

        addSubview(container)
        container.addSubview(icon)
        container.addSubview(textField)

        snp.makeConstraints { make in
            make.height.equalTo(62)
        }
        container.snp.makeConstraints { make in
            make.leading.trailing.equalToSuperview().inset(AppSpacing.md)
            make.centerY.equalToSuperview()
            make.height.equalTo(38)
        }
        icon.snp.makeConstraints { make in
            make.leading.equalToSuperview().offset(AppSpacing.sm)
            make.centerY.equalToSuperview()
            make.size.equalTo(18)
        }
        textField.snp.makeConstraints { make in
            make.leading.equalTo(icon.snp.trailing).offset(AppSpacing.xs)
            make.trailing.equalToSuperview().inset(AppSpacing.sm)
            make.centerY.equalToSuperview()
        }
    }

    @available(*, unavailable)
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    @objc private func textChanged() {
        onSearchTextChange?(textField.text ?? "")
    }

    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        textField.resignFirstResponder()
        onSearch?()
        return true
    }
}

/// 获客员线索 Cell。
final class ReferralLeadCell: UITableViewCell {
    static let reuseIdentifier = "ReferralLeadCell"

    var onImageTap: ((Int, [String]) -> Void)?

    private let cardView = UIView()
    private let phoneLabel = UILabel()
    private let phoneValueLabel = UILabel()
    private let timeLabel = UILabel()
    private let salerRow = CooperationInfoRowView(label: "获客员")
    private let remarkTitleLabel = UILabel()
    private let remarkLabel = UILabel()
    private let imageTitleLabel = UILabel()
    private let imageStack = UIStackView()
    private let emptyImageLabel = UILabel()
    private var imageURLs: [String] = []

    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        selectionStyle = .none
        backgroundColor = .clear
        contentView.backgroundColor = .clear

        cardView.backgroundColor = .white
        cardView.layer.cornerRadius = AppRadius.lg
        cardView.layer.shadowColor = UIColor.black.cgColor
        cardView.layer.shadowOpacity = 0.04
        cardView.layer.shadowOffset = CGSize(width: 0, height: 1)
        cardView.layer.shadowRadius = 2

        phoneLabel.text = "用户手机号"
        phoneLabel.font = .systemFont(ofSize: 13)
        phoneLabel.textColor = AppColor.textTertiary
        phoneValueLabel.font = .systemFont(ofSize: 15, weight: .medium)
        phoneValueLabel.textColor = AppColor.textPrimary
        timeLabel.font = .systemFont(ofSize: 11)
        timeLabel.textColor = AppColor.textTertiary
        timeLabel.textAlignment = .right

        remarkTitleLabel.text = "备注"
        remarkTitleLabel.font = .systemFont(ofSize: 13)
        remarkTitleLabel.textColor = AppColor.textTertiary
        remarkLabel.font = .systemFont(ofSize: 14)
        remarkLabel.textColor = AppColor.textPrimary
        remarkLabel.numberOfLines = 0

        imageTitleLabel.text = "图片"
        imageTitleLabel.font = .systemFont(ofSize: 13)
        imageTitleLabel.textColor = AppColor.textTertiary

        imageStack.axis = .horizontal
        imageStack.spacing = AppSpacing.xs
        imageStack.distribution = .fillEqually

        emptyImageLabel.text = "暂无图片"
        emptyImageLabel.font = .systemFont(ofSize: 13)
        emptyImageLabel.textColor = AppColor.textTertiary
        emptyImageLabel.textAlignment = .center
        emptyImageLabel.backgroundColor = UIColor(hex: 0xF7F8FA)
        emptyImageLabel.layer.cornerRadius = AppRadius.sm
        emptyImageLabel.clipsToBounds = true
        emptyImageLabel.isHidden = true

        contentView.addSubview(cardView)
        cardView.addSubview(phoneLabel)
        cardView.addSubview(phoneValueLabel)
        cardView.addSubview(timeLabel)
        cardView.addSubview(salerRow)
        cardView.addSubview(remarkTitleLabel)
        cardView.addSubview(remarkLabel)
        cardView.addSubview(imageTitleLabel)
        cardView.addSubview(imageStack)
        cardView.addSubview(emptyImageLabel)

        cardView.snp.makeConstraints { make in
            make.edges.equalToSuperview().inset(UIEdgeInsets(top: 0, left: AppSpacing.md, bottom: AppSpacing.sm, right: AppSpacing.md))
        }
        phoneLabel.snp.makeConstraints { make in
            make.top.leading.equalToSuperview().offset(14)
        }
        phoneValueLabel.snp.makeConstraints { make in
            make.leading.equalTo(phoneLabel.snp.trailing).offset(14)
            make.centerY.equalTo(phoneLabel)
        }
        timeLabel.snp.makeConstraints { make in
            make.trailing.equalToSuperview().inset(14)
            make.centerY.equalTo(phoneLabel)
            make.leading.greaterThanOrEqualTo(phoneValueLabel.snp.trailing).offset(AppSpacing.xs)
        }
        salerRow.snp.makeConstraints { make in
            make.top.equalTo(phoneLabel.snp.bottom).offset(10)
            make.leading.trailing.equalToSuperview().inset(14)
        }
        remarkTitleLabel.snp.makeConstraints { make in
            make.top.equalTo(salerRow.snp.bottom).offset(10)
            make.leading.equalToSuperview().offset(14)
        }
        remarkLabel.snp.makeConstraints { make in
            make.top.equalTo(remarkTitleLabel.snp.bottom).offset(4)
            make.leading.trailing.equalToSuperview().inset(14)
        }
        imageTitleLabel.snp.makeConstraints { make in
            make.top.equalTo(remarkLabel.snp.bottom).offset(10)
            make.leading.equalToSuperview().offset(14)
        }
        imageStack.snp.makeConstraints { make in
            make.top.equalTo(imageTitleLabel.snp.bottom).offset(4)
            make.leading.trailing.equalToSuperview().inset(14)
            make.height.equalTo(imageStack.snp.width).multipliedBy(1.0 / 3.0).offset(-AppSpacing.xs * 2 / 3)
            make.bottom.equalToSuperview().inset(14)
        }
        emptyImageLabel.snp.makeConstraints { make in
            make.edges.equalTo(imageStack)
        }
    }

    @available(*, unavailable)
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    func configure(with lead: ReferralLeadEntity) {
        phoneValueLabel.text = lead.displayPhone.isEmpty ? "—" : lead.displayPhone
        timeLabel.text = lead.createdAt
        salerRow.setValue(lead.displaySalerName.isEmpty ? "—" : lead.displaySalerName)
        remarkLabel.text = lead.remark.isEmpty ? "暂无备注" : lead.remark
        imageURLs = lead.displayImages
        imageStack.arrangedSubviews.forEach { $0.removeFromSuperview() }
        if imageURLs.isEmpty {
            emptyImageLabel.isHidden = false
            imageStack.isHidden = true
        } else {
            emptyImageLabel.isHidden = true
            imageStack.isHidden = false
            imageURLs.prefix(3).enumerated().forEach { index, url in
                let imageView = UIImageView()
                imageView.contentMode = .scaleAspectFill
                imageView.clipsToBounds = true
                imageView.layer.cornerRadius = AppRadius.sm
                imageView.backgroundColor = UIColor(hex: 0xF4F4F4)
                imageView.isUserInteractionEnabled = true
                imageView.loadRemoteImage(urlString: url)
                imageView.tag = index
                imageView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(imageTapped(_:))))
                imageStack.addArrangedSubview(imageView)
            }
            let missing = 3 - imageStack.arrangedSubviews.count
            if missing > 0 {
                (0..<missing).forEach { _ in
                    let spacer = UIView()
                    imageStack.addArrangedSubview(spacer)
                }
            }
        }
    }

    @objc private func imageTapped(_ gesture: UITapGestureRecognizer) {
        guard let index = gesture.view?.tag else { return }
        onImageTap?(index, imageURLs)
    }
}

/// 获客订单 Cell。
final class AcquisitionOrderCell: UITableViewCell {
    static let reuseIdentifier = "AcquisitionOrderCell"

    private let cardView = UIView()
    private let titleLabel = UILabel()
    private let typeTag = UILabel()
    private let orderNumberLabel = UILabel()
    private let partnerRow = CooperationInfoRowView(label: "合作人员")
    private let timeRow = CooperationInfoRowView(label: "下单时间")
    private let customerLabel = UILabel()
    private let amountLabel = UILabel()

    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        selectionStyle = .none
        backgroundColor = .clear
        contentView.backgroundColor = .clear

        cardView.backgroundColor = .white
        cardView.layer.cornerRadius = AppRadius.lg
        cardView.layer.shadowColor = UIColor.black.cgColor
        cardView.layer.shadowOpacity = 0.04
        cardView.layer.shadowOffset = CGSize(width: 0, height: 1)
        cardView.layer.shadowRadius = 2

        titleLabel.font = .systemFont(ofSize: 16, weight: .bold)
        titleLabel.textColor = AppColor.textPrimary

        typeTag.font = .systemFont(ofSize: 11)
        typeTag.textColor = AppColor.primary
        typeTag.backgroundColor = AppColor.primaryLight
        typeTag.layer.cornerRadius = AppRadius.xs
        typeTag.clipsToBounds = true
        typeTag.textAlignment = .center

        orderNumberLabel.font = .systemFont(ofSize: 13)
        orderNumberLabel.textColor = AppColor.textSecondary

        customerLabel.font = .systemFont(ofSize: 12)
        customerLabel.textColor = AppColor.textTertiary

        amountLabel.font = .systemFont(ofSize: 17, weight: .bold)
        amountLabel.textColor = AppColor.primary
        amountLabel.textAlignment = .right

        contentView.addSubview(cardView)
        cardView.addSubview(titleLabel)
        cardView.addSubview(typeTag)
        cardView.addSubview(orderNumberLabel)
        cardView.addSubview(partnerRow)
        cardView.addSubview(timeRow)
        cardView.addSubview(customerLabel)
        cardView.addSubview(amountLabel)

        cardView.snp.makeConstraints { make in
            make.edges.equalToSuperview().inset(UIEdgeInsets(top: 0, left: AppSpacing.md, bottom: AppSpacing.sm, right: AppSpacing.md))
        }
        titleLabel.snp.makeConstraints { make in
            make.top.leading.equalToSuperview().offset(14)
            make.trailing.lessThanOrEqualToSuperview().inset(14)
        }
        typeTag.snp.makeConstraints { make in
            make.top.equalTo(titleLabel.snp.bottom).offset(10)
            make.leading.equalToSuperview().offset(14)
            make.height.equalTo(22)
        }
        orderNumberLabel.snp.makeConstraints { make in
            make.centerY.equalTo(typeTag)
            make.leading.equalTo(typeTag.snp.trailing).offset(AppSpacing.xs)
            make.trailing.lessThanOrEqualToSuperview().inset(14)
        }
        partnerRow.snp.makeConstraints { make in
            make.top.equalTo(typeTag.snp.bottom).offset(10)
            make.leading.trailing.equalToSuperview().inset(14)
        }
        timeRow.snp.makeConstraints { make in
            make.top.equalTo(partnerRow.snp.bottom).offset(10)
            make.leading.trailing.equalToSuperview().inset(14)
        }
        customerLabel.snp.makeConstraints { make in
            make.top.equalTo(timeRow.snp.bottom).offset(10)
            make.leading.equalToSuperview().offset(14)
            make.bottom.equalToSuperview().inset(14)
        }
        amountLabel.snp.makeConstraints { make in
            make.centerY.equalTo(customerLabel)
            make.trailing.equalToSuperview().inset(14)
            make.leading.greaterThanOrEqualTo(customerLabel.snp.trailing).offset(AppSpacing.xs)
        }
    }

    @available(*, unavailable)
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    func configure(with order: AcquisitionOrderEntity) {
        titleLabel.text = order.projectName.isEmpty ? "—" : order.projectName
        if order.orderTypeLabel.isEmpty {
            typeTag.isHidden = true
            orderNumberLabel.snp.remakeConstraints { make in
                make.top.equalTo(titleLabel.snp.bottom).offset(10)
                make.leading.equalToSuperview().offset(14)
                make.trailing.lessThanOrEqualToSuperview().inset(14)
            }
        } else {
            typeTag.isHidden = false
            typeTag.text = "  \(order.orderTypeLabel)  "
            orderNumberLabel.snp.remakeConstraints { make in
                make.centerY.equalTo(typeTag)
                make.leading.equalTo(typeTag.snp.trailing).offset(AppSpacing.xs)
                make.trailing.lessThanOrEqualToSuperview().inset(14)
            }
        }
        orderNumberLabel.text = "订单号 \(order.orderNumber)"
        partnerRow.setValue(order.displayPartner.isEmpty ? "暂未绑定" : order.displayPartner)
        timeRow.setValue(order.createdAt.isEmpty ? "—" : order.createdAt)
        customerLabel.text = "客户 \(order.displayCustomerPhone.isEmpty ? "—" : order.displayCustomerPhone)"
        amountLabel.text = "¥\(order.displayAmount)"
    }
}

/// 合作获客员 Cell。
final class CooperationAcquirerCell: UITableViewCell {
    static let reuseIdentifier = "CooperationAcquirerCell"

    var onEditRemark: (() -> Void)?
    var onEditCommission: (() -> Void)?
    var onCall: (() -> Void)?

    private let cardView = UIView()
    private let nameLabel = UILabel()
    private let editRemarkButton = UIButton(type: .system)
    private let phoneLabel = UILabel()
    private let callButton = UIButton(type: .system)
    private let bindTimeRow = CooperationInfoRowView(label: "绑定时间")
    private let commissionRow = CooperationInfoRowView(label: "分成比例")
    private let editCommissionButton = UIButton(type: .system)

    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        selectionStyle = .none
        backgroundColor = .clear
        contentView.backgroundColor = .clear

        cardView.backgroundColor = .white
        cardView.layer.cornerRadius = AppRadius.lg

        nameLabel.font = .systemFont(ofSize: 16, weight: .bold)
        nameLabel.textColor = AppColor.textPrimary

        editRemarkButton.setTitle("修改备注", for: .normal)
        editRemarkButton.titleLabel?.font = .systemFont(ofSize: 13)
        editRemarkButton.setTitleColor(AppColor.primary, for: .normal)
        editRemarkButton.addTarget(self, action: #selector(editRemarkTapped), for: .touchUpInside)

        phoneLabel.font = .systemFont(ofSize: 13)
        phoneLabel.textColor = AppColor.textSecondary

        callButton.setImage(UIImage(systemName: "phone.fill"), for: .normal)
        callButton.tintColor = AppColor.primary
        callButton.backgroundColor = AppColor.primaryLight
        callButton.layer.cornerRadius = 15
        callButton.addTarget(self, action: #selector(callTapped), for: .touchUpInside)

        editCommissionButton.setTitle("修改", for: .normal)
        editCommissionButton.titleLabel?.font = .systemFont(ofSize: 13)
        editCommissionButton.setTitleColor(AppColor.primary, for: .normal)
        editCommissionButton.addTarget(self, action: #selector(editCommissionTapped), for: .touchUpInside)

        contentView.addSubview(cardView)
        cardView.addSubview(nameLabel)
        cardView.addSubview(editRemarkButton)
        cardView.addSubview(phoneLabel)
        cardView.addSubview(callButton)
        cardView.addSubview(bindTimeRow)
        cardView.addSubview(commissionRow)
        cardView.addSubview(editCommissionButton)

        cardView.snp.makeConstraints { make in
            make.edges.equalToSuperview().inset(UIEdgeInsets(top: 0, left: AppSpacing.md, bottom: AppSpacing.sm, right: AppSpacing.md))
        }
        nameLabel.snp.makeConstraints { make in
            make.top.leading.equalToSuperview().offset(14)
        }
        editRemarkButton.snp.makeConstraints { make in
            make.centerY.equalTo(nameLabel)
            make.leading.equalTo(nameLabel.snp.trailing).offset(AppSpacing.xs)
        }
        phoneLabel.snp.makeConstraints { make in
            make.top.equalTo(nameLabel.snp.bottom).offset(10)
            make.leading.equalToSuperview().offset(14)
        }
        callButton.snp.makeConstraints { make in
            make.trailing.equalToSuperview().inset(14)
            make.centerY.equalTo(phoneLabel)
            make.size.equalTo(30)
        }
        bindTimeRow.snp.makeConstraints { make in
            make.top.equalTo(phoneLabel.snp.bottom).offset(10)
            make.leading.trailing.equalToSuperview().inset(14)
        }
        commissionRow.snp.makeConstraints { make in
            make.top.equalTo(bindTimeRow.snp.bottom).offset(10)
            make.leading.equalToSuperview().offset(14)
            make.bottom.equalToSuperview().inset(14)
        }
        editCommissionButton.snp.makeConstraints { make in
            make.centerY.equalTo(commissionRow)
            make.leading.equalTo(commissionRow.snp.trailing).offset(AppSpacing.xs)
        }
    }

    @available(*, unavailable)
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    func configure(with acquirer: CooperativeSalerEntity) {
        nameLabel.text = acquirer.displayName.isEmpty ? "—" : acquirer.displayName
        phoneLabel.text = "手机号 \(CooperationOrderPhoneMask.mask(acquirer.displayPhone))"
        bindTimeRow.setValue(acquirer.displayBindTime.isEmpty ? "—" : acquirer.displayBindTime)
        commissionRow.setValue(acquirer.displayCommissionRate)
    }

    @objc private func editRemarkTapped() { onEditRemark?() }
    @objc private func editCommissionTapped() { onEditCommission?() }
    @objc private func callTapped() { onCall?() }
}

/// 标签-值行。
final class CooperationInfoRowView: UIView {
    private let titleLabel = UILabel()
    private let valueLabel = UILabel()

    init(label: String) {
        super.init(frame: .zero)
        titleLabel.text = label
        titleLabel.font = .systemFont(ofSize: 13)
        titleLabel.textColor = AppColor.textTertiary
        valueLabel.font = .systemFont(ofSize: 13)
        valueLabel.textColor = AppColor.textSecondary
        valueLabel.numberOfLines = 0

        addSubview(titleLabel)
        addSubview(valueLabel)
        titleLabel.snp.makeConstraints { make in
            make.leading.top.bottom.equalToSuperview()
            make.width.equalTo(72)
        }
        valueLabel.snp.makeConstraints { make in
            make.leading.equalTo(titleLabel.snp.trailing).offset(12)
            make.trailing.top.bottom.equalToSuperview()
        }
    }

    @available(*, unavailable)
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    func setValue(_ value: String) {
        valueLabel.text = value
    }
}

enum CooperationOrderPhoneMask {
    static func mask(_ phone: String) -> String {
        let digits = phone.filter(\.isNumber)
        guard digits.count >= 7 else { return phone }
        return "\(digits.prefix(3))****\(digits.suffix(4))"
    }
}