import Foundation
import Combine
import SwiftUI

/// 数据存储 — Bricks binds系统的数据层
/// 存储widget的值，提供双向绑定
@MainActor
public final class BricksStore: ObservableObject {
    /// widget值存储: widgetId → value
    @Published public var values: [String: Any] = [:]
    
    /// 表单字段值: formId → {fieldName: value}
    @Published public var formValues: [String: [String: String]] = [:]
    
    /// Tabular数据: tabularId → rows
    @Published public var tableData: [String: [[String: Any]]] = [:]
    
    /// Tabular选中行: tabularId → selectedIndex
    @Published public var selectedRows: [String: Int] = [:]
    
    /// 弹出窗口状态
    @Published public var popups: [String: PopupState] = [:]
    
    /// 侧边栏折叠状态
    @Published public var collapsedMenus: Set<String> = []
    
    private var cancellables = Set<AnyCancellable>()
    
    public init() {}
    
    // MARK: - 通用值存取
    
    public func getValue(id: String) -> Any? {
        values[id]
    }
    
    public func setValue(id: String, value: Any?) {
        if let value {
            values[id] = value
        } else {
            values.removeValue(forKey: id)
        }
    }
    
    // MARK: - 表单字段
    
    public func getFormField(formId: String, field: String) -> String {
        formValues[formId]?[field] ?? ""
    }
    
    public func setFormField(formId: String, field: String, value: String) {
        if formValues[formId] == nil {
            formValues[formId] = [:]
        }
        formValues[formId]?[field] = value
    }
    
    public func getFormValues(formId: String) -> [String: String] {
        formValues[formId] ?? [:]
    }
    
    public func setFormValues(formId: String, data: [String: String]) {
        formValues[formId] = data
    }
    
    public func clearForm(formId: String) {
        formValues[formId]?.keys.forEach { key in
            formValues[formId]?[key] = ""
        }
    }
    
    // MARK: - 表格数据
    
    public func setTableData(id: String, rows: [[String: Any]]) {
        tableData[id] = rows
    }
    
    public func getTableData(id: String) -> [[String: Any]] {
        tableData[id] ?? []
    }
    
    public func selectRow(tabularId: String, index: Int) {
        selectedRows[tabularId] = index
    }
    
    public func getSelectedRow(tabularId: String) -> Int? {
        selectedRows[tabularId]
    }
    
    public func getSelectedRowData(tabularId: String) -> [String: Any]? {
        guard let idx = selectedRows[tabularId],
              let rows = tableData[tabularId],
              idx >= 0, idx < rows.count else { return nil }
        return rows[idx]
    }
    
    // MARK: - 弹窗
    
    public func openPopup(id: String, schema: ControlSchema, options: PopupOptions) {
        popups[id] = PopupState(schema: schema, options: options, isOpen: true)
    }
    
    public func closePopup(id: String) {
        popups.removeValue(forKey: id)
    }
    
    public func isPopupOpen(id: String) -> Bool {
        popups[id]?.isOpen ?? false
    }
}

/// 弹窗状态
public struct PopupState {
    public let schema: ControlSchema
    public let options: PopupOptions
    public var isOpen: Bool
}