//
//  ScenicSelectionViews.swift
//  suixinkan
//

import Kingfisher
import SnapKit
import UIKit

/// 景区选择页橙色权限申请横幅。
final class ScenicPermissionBannerView: UIView {

    var onApplyNow: (() -> Void)?

    private let titleLabel = UILabel()
    private let applyButton = UIButton(type: .system)

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

        titleLabel.text = "希望开通更多景区权限"
        titleLabel.font = .systemFont(ofSize: 14, weight: .medium)
        titleLabel.textColor = AppColor.warning
        titleLabel.numberOfLines = 2

        applyButton.setTitle("立即申请 ›", for: .normal)
        applyButton.titleLabel?.font = .systemFont(ofSize: 14, weight: .medium)
        applyButton.setTitleColor(AppColor.warning, for: .normal)
        applyButton.addTarget(self, action: #selector(applyTapped), for: .touchUpInside)

        addSubview(titleLabel)
        addSubview(applyButton)
        titleLabel.snp.makeConstraints { make in
            make.leading.equalToSuperview().offset(16)
            make.centerY.equalToSuperview()
            make.trailing.lessThanOrEqualTo(applyButton.snp.leading).offset(-8)
        }
        applyButton.snp.makeConstraints { make in
            make.trailing.equalToSuperview().offset(-16)
            make.centerY.equalToSuperview()
        }
        snp.makeConstraints { make in
            make.height.equalTo(44)
        }
        setContentHuggingPriority(.required, for: .vertical)
        setContentCompressionResistancePriority(.required, for: .vertical)
    }

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

    @objc private func applyTapped() {
        onApplyNow?()
    }
}

/// 景区搜索栏。
final class ScenicSelectionSearchBar: UIView, UITextFieldDelegate {

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

    let textField = UITextField()

    override init(frame: CGRect) {
        super.init(frame: frame)
        backgroundColor = UIColor(hex: 0xF2F4F8)
        layer.cornerRadius = 12
        clipsToBounds = true

        let icon = UIImageView(image: UIImage(systemName: "magnifyingglass"))
        icon.tintColor = UIColor(hex: 0xB3B8C2)
        icon.contentMode = .scaleAspectFit

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

        addSubview(icon)
        addSubview(textField)
        icon.snp.makeConstraints { make in
            make.leading.equalToSuperview().offset(12)
            make.centerY.equalToSuperview()
            make.size.equalTo(18)
        }
        textField.snp.makeConstraints { make in
            make.leading.equalTo(icon.snp.trailing).offset(8)
            make.trailing.equalToSuperview().offset(-12)
            make.top.bottom.equalToSuperview().inset(10)
        }
        snp.makeConstraints { make in
            make.height.equalTo(44)
        }
    }

    @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()
        return true
    }
}

/// 当前定位栏。
final class ScenicCurrentLocationBar: UIView {

    var onRelocate: (() -> Void)?

    private let iconView = UIImageView(image: UIImage(systemName: "location.fill"))
    private let locationLabel = UILabel()
    private let relocateButton = UIButton(type: .system)

    override init(frame: CGRect) {
        super.init(frame: frame)

        iconView.tintColor = AppColor.primary
        iconView.contentMode = .scaleAspectFit

        locationLabel.font = .systemFont(ofSize: 14)
        locationLabel.textColor = AppColor.textPrimary
        locationLabel.numberOfLines = 2

        relocateButton.setTitle("重新定位", for: .normal)
        relocateButton.titleLabel?.font = .systemFont(ofSize: 12)
        relocateButton.setTitleColor(AppColor.primary, for: .normal)
        relocateButton.backgroundColor = AppColor.primaryLight
        relocateButton.layer.cornerRadius = 4
        relocateButton.contentEdgeInsets = UIEdgeInsets(top: 2, left: 8, bottom: 2, right: 8)
        relocateButton.addTarget(self, action: #selector(relocateTapped), for: .touchUpInside)
        relocateButton.setContentHuggingPriority(.required, for: .horizontal)
        relocateButton.setContentCompressionResistancePriority(.required, for: .horizontal)

        addSubview(iconView)
        addSubview(locationLabel)
        addSubview(relocateButton)

        iconView.snp.makeConstraints { make in
            make.leading.equalToSuperview()
            make.centerY.equalTo(locationLabel)
            make.size.equalTo(16)
        }
        locationLabel.snp.makeConstraints { make in
            make.leading.equalTo(iconView.snp.trailing).offset(4)
            make.top.bottom.equalToSuperview().inset(8)
            make.trailing.lessThanOrEqualTo(relocateButton.snp.leading).offset(-12)
        }
        relocateButton.snp.makeConstraints { make in
            make.trailing.equalToSuperview()
            make.centerY.equalTo(locationLabel)
        }
        setContentHuggingPriority(.required, for: .vertical)
        setContentCompressionResistancePriority(.required, for: .vertical)
    }

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

    func apply(locationText: String, isLocating: Bool = false) {
        locationLabel.text = isLocating ? "定位中..." : locationText
        relocateButton.isEnabled = !isLocating
        relocateButton.alpha = isLocating ? 0.5 : 1
    }

    @objc private func relocateTapped() {
        onRelocate?()
    }
}

/// 景区卡片 Cell。
final class ScenicSpotCell: UITableViewCell {

    static let reuseIdentifier = "ScenicSpotCell"

    var onTap: (() -> Void)?

    private let cardView = UIView()
    private let coverImageView = UIImageView()
    private let nameLabel = UILabel()
    private let distanceLabel = UILabel()
    private let addressLabel = UILabel()
    private let statusTag = UILabel()
    private let selectedBorderColor = UIColor(hex: 0xE74C3C)

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

        cardView.backgroundColor = AppColor.pageBackgroundSoft
        cardView.layer.cornerRadius = 8
        cardView.layer.borderWidth = 2
        cardView.layer.borderColor = UIColor(hex: 0xF4F4F4).cgColor

        coverImageView.contentMode = .scaleAspectFill
        coverImageView.clipsToBounds = true
        coverImageView.layer.cornerRadius = 6
        coverImageView.backgroundColor = UIColor(hex: 0xF0F0F0)

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

        distanceLabel.font = .systemFont(ofSize: 12)
        distanceLabel.textColor = AppColor.textSecondary

        addressLabel.font = .systemFont(ofSize: 12)
        addressLabel.textColor = AppColor.textTertiary
        addressLabel.numberOfLines = 2

        statusTag.font = .systemFont(ofSize: 11, weight: .medium)
        statusTag.textColor = .white
        statusTag.textAlignment = .center
        statusTag.layer.cornerRadius = 4
        statusTag.clipsToBounds = true
        statusTag.isHidden = true

        contentView.addSubview(cardView)
        cardView.addSubview(coverImageView)
        cardView.addSubview(nameLabel)
        cardView.addSubview(statusTag)
        cardView.addSubview(distanceLabel)
        cardView.addSubview(addressLabel)

        cardView.snp.makeConstraints { make in
            make.edges.equalToSuperview().inset(UIEdgeInsets(top: 0, left: 16, bottom: 12, right: 16))
        }
        coverImageView.snp.makeConstraints { make in
            make.leading.top.bottom.equalToSuperview().inset(12)
            make.size.equalTo(80)
        }
        nameLabel.snp.makeConstraints { make in
            make.leading.equalTo(coverImageView.snp.trailing).offset(12)
            make.top.equalToSuperview().offset(12)
            make.trailing.lessThanOrEqualTo(statusTag.snp.leading).offset(-8)
        }
        statusTag.snp.makeConstraints { make in
            make.trailing.equalToSuperview().offset(-12)
            make.centerY.equalTo(nameLabel)
            make.height.equalTo(20)
        }
        distanceLabel.snp.makeConstraints { make in
            make.leading.equalTo(nameLabel)
            make.top.equalTo(nameLabel.snp.bottom).offset(6)
        }
        addressLabel.snp.makeConstraints { make in
            make.leading.equalTo(nameLabel)
            make.trailing.equalToSuperview().offset(-12)
            make.top.equalTo(distanceLabel.snp.bottom).offset(4)
            make.bottom.lessThanOrEqualToSuperview().offset(-12)
        }

        let tap = UITapGestureRecognizer(target: self, action: #selector(cardTapped))
        cardView.addGestureRecognizer(tap)
    }

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

    func apply(_ item: ScenicSpotDisplayItem) {
        nameLabel.text = item.name
        distanceLabel.text = "\(item.distanceText)km"
        addressLabel.text = item.address

        if let url = URL(string: item.coverImg), !item.coverImg.isEmpty {
            coverImageView.kf.setImage(with: url, placeholder: UIImage(systemName: "photo"))
        } else {
            coverImageView.image = UIImage(systemName: "photo")
            coverImageView.tintColor = AppColor.textTertiary
        }

        if let label = item.statusLabel {
            statusTag.isHidden = false
            statusTag.text = "  \(label)  "
            switch item.openStatus {
            case .nearest, .closed:
                statusTag.backgroundColor = selectedBorderColor
            case .none:
                statusTag.backgroundColor = AppColor.textTertiary
            }
        } else {
            statusTag.isHidden = true
        }

        cardView.layer.borderColor = (item.isSelected ? selectedBorderColor : UIColor(hex: 0xF4F4F4)).cgColor
    }

    @objc private func cardTapped() {
        onTap?()
    }
}