//
//  SPSearchHomeView.swift
//  Thimra
//
//  Created by 曾觉新 on 2025/4/17.
//

import UIKit

class SPSearchHomeView: UIView {
    
    
    var viewModel: SPSearchViewModel? {
        didSet {
            viewModel?.addObserver(self, forKeyPath: "searchHistoryArr", context: nil)
            
            historyView.viewModel = self.viewModel
            
            _updateUI()
        }
    }
    
    var searchTextBlock: ((_ text: String) -> Void)?
    
    //MARK: UI属性
    private lazy var stackView: UIStackView = {
        let view = UIStackView()
        view.axis = .vertical
        view.spacing = 28
        return view
    }()
    
    private lazy var historyView: SPHomeSearchHistoryView = {
        let view = SPHomeSearchHistoryView()
        view.searchTextBlock = { [weak self] text in
            self?.searchTextBlock?(text)
        }
        return view
    }()
    
    ///热门搜索
    private lazy var hotSearchView: SPHomeHotSearchView = {
        let view = SPHomeHotSearchView()
        return view
    }()
    
    deinit {
        viewModel?.removeObserver(self, forKeyPath: "searchHistoryArr")
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        
        stackView.addArrangedSubview(historyView)
        
        _setupUI()
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
        if keyPath == "searchHistoryArr" {
            _updateUI()
        }
    }
    
    
    

}

extension SPSearchHomeView {
    
    private func _setupUI() {
        addSubview(stackView)
        
        stackView.snp.makeConstraints { make in
            make.top.equalToSuperview().offset(10)
            make.left.right.bottom.equalToSuperview()
//            make.edges.equalToSuperview()
        }
    }
    
    private func _updateUI() {
        stackView.removeAllArrangedSubview()
        
        if (self.viewModel?.searchHistoryArr.count ?? 0) > 0 {
            self.stackView.addArrangedSubview(self.historyView)
        }
        
        self.stackView.addArrangedSubview(self.hotSearchView)
    }
    
}