//
//  ScenicPermissionViewControllers.swift
//  suixinkan
//
//  Created by Codex on 2026/6/26.
//

import UIKit

/// 景区选择页。
final class ScenicSelectionViewController: ModuleTableViewController {
    private let viewModel = ScenicSelectionViewModel()
    private let searchBar = UISearchBar()

    override func viewDidLoad() {
        title = "选择景区"
        super.viewDidLoad()
        setupSearchBar()
        wireViewModel(viewModel) { }
    }

    private func setupSearchBar() {
        searchBar.placeholder = "搜索景区"
        searchBar.delegate = self
        searchBar.frame = CGRect(x: 0, y: 0, width: view.bounds.width, height: 56)
        tableView.tableHeaderView = searchBar
    }

    override func tableRowCount() -> Int {
        viewModel.filteredItems.count
    }

    override func configureCell(_ cell: TitleSubtitleTableViewCell, at indexPath: IndexPath) {
        let item = viewModel.filteredItems[indexPath.row]
        cell.configure(title: item.name, subtitle: item.address, detail: item.distanceText)
    }

    override func didSelectTableRow(at indexPath: IndexPath) {
        let item = viewModel.filteredItems[indexPath.row]
        viewModel.select(
            scenicId: item.id,
            accountContext: services.accountContext,
            permissionContext: services.permissionContext,
            snapshotStore: AccountSnapshotStore()
        )
        navigationController?.popViewController(animated: true)
    }

    override func reloadContent() async {
        viewModel.reload(from: services.accountContext)
    }
}

extension ScenicSelectionViewModel: ViewModelBindable {}

extension ScenicSelectionViewController: UISearchBarDelegate {
    func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
        viewModel.searchQuery = searchText
    }
}

/// 权限申请页。
final class PermissionApplyViewController: ModuleTableViewController {
    private let viewModel = PermissionApplyViewModel()

    override func viewDidLoad() {
        title = "权限申请"
        navigationItem.rightBarButtonItem = UIBarButtonItem(
            title: "提交",
            style: .done,
            target: self,
            action: #selector(submit)
        )
        super.viewDidLoad()
        wireViewModel(viewModel) { }
    }

    override func numberOfSections(in tableView: UITableView) -> Int { 2 }

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        section == 0 ? viewModel.roleOptions.count : viewModel.scenicOptions.count
    }

    func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
        section == 0 ? "选择角色" : "选择景区"
    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(
            withIdentifier: TitleSubtitleTableViewCell.reuseIdentifier,
            for: indexPath
        ) as! TitleSubtitleTableViewCell
        if indexPath.section == 0 {
            let role = viewModel.roleOptions[indexPath.row]
            cell.configure(title: role.name, subtitle: role.notes)
            cell.accessoryType = viewModel.selectedRoleId == role.id ? .checkmark : .none
        } else {
            let scenic = viewModel.scenicOptions[indexPath.row]
            cell.configure(title: scenic.name, subtitle: scenic.disabled ? "已有权限" : nil)
            cell.accessoryType = scenic.selected ? .checkmark : .none
        }
        return cell
    }

    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        tableView.deselectRow(at: indexPath, animated: true)
        if indexPath.section == 0 {
            viewModel.selectRole(id: viewModel.roleOptions[indexPath.row].id)
            Task { await viewModel.loadScenicListIfNeeded(api: services.scenicPermissionAPI, force: true) }
        } else {
            viewModel.toggleScenic(id: viewModel.scenicOptions[indexPath.row].id)
        }
    }

    override func reloadContent() async {
        viewModel.bootstrap(rolePermissions: services.permissionContext.rolePermissions)
        if viewModel.selectedRoleId != nil {
            await viewModel.loadScenicListIfNeeded(api: services.scenicPermissionAPI, force: true)
        }
    }

    @objc private func submit() {
        Task {
            await viewModel.submit(api: services.scenicPermissionAPI)
            if viewModel.message == "提交成功，等待审核" {
                services.toastCenter.show(viewModel.message ?? "提交成功")
                navigationController?.popViewController(animated: true)
            } else if let message = viewModel.message {
                services.toastCenter.show(message)
            }
        }
    }
}

extension PermissionApplyViewModel: ViewModelBindable {}

/// 权限申请状态页。
final class PermissionApplyStatusViewController: ModuleTableViewController {
    private let viewModel = PermissionApplyStatusViewModel()

    override func viewDidLoad() {
        title = "申请状态"
        super.viewDidLoad()
        viewModel.onChange = { [weak self] in self?.reloadTable() }
    }

    override func tableRowCount() -> Int {
        viewModel.pending == nil ? 0 : 4
    }

    override func configureCell(_ cell: TitleSubtitleTableViewCell, at indexPath: IndexPath) {
        guard let pending = viewModel.pending else { return }
        switch indexPath.row {
        case 0: cell.configure(title: "申请编号", subtitle: pending.code)
        case 1: cell.configure(title: "角色", subtitle: pending.roleName)
        case 2: cell.configure(title: "状态", subtitle: pending.statusLabel)
        default: cell.configure(title: "申请时间", subtitle: pending.createdAt)
        }
    }

    override func reloadContent() async {
        await viewModel.load(api: services.scenicPermissionAPI, applyCode: nil)
    }
}

/// 景区申请页。
final class ScenicApplicationViewController: ModuleTableViewController {
    private let viewModel = ScenicApplicationViewModel()
    private let nameField = UITextField()

    override func viewDidLoad() {
        title = "景区申请"
        navigationItem.rightBarButtonItem = UIBarButtonItem(
            title: "提交",
            style: .done,
            target: self,
            action: #selector(submit)
        )
        super.viewDidLoad()
        nameField.placeholder = "景区名称"
        nameField.borderStyle = .roundedRect
        nameField.frame = CGRect(x: 0, y: 0, width: view.bounds.width, height: 52)
        tableView.tableHeaderView = nameField
        wireViewModel(viewModel) { [weak self] in
            if self?.nameField.text?.isEmpty != false {
                self?.nameField.text = self?.viewModel.scenicName
            }
        }
    }

    override func tableRowCount() -> Int { 3 }

    override func configureCell(_ cell: TitleSubtitleTableViewCell, at indexPath: IndexPath) {
        switch indexPath.row {
        case 0: cell.configure(title: "省份", subtitle: viewModel.selectedProvince)
        case 1: cell.configure(title: "城市", subtitle: viewModel.selectedCity)
        default: cell.configure(title: "合作类型", subtitle: viewModel.coopType == 1 ? "自营" : "合作")
        }
    }

    override func reloadContent() async {
        await viewModel.loadInitial(api: services.scenicPermissionAPI)
    }

    @objc private func submit() {
        viewModel.scenicName = nameField.text ?? ""
        Task {
            await viewModel.submit(api: services.scenicPermissionAPI, uploader: services.ossUploadService)
            if let message = viewModel.message {
                services.toastCenter.show(message)
            }
        }
    }
}

extension ScenicApplicationViewModel: ViewModelBindable {}