import Foundation

// MARK: - JSON Schema Models (Bricks JSON → Codable)

/// 根控件定义，对应Bricks JSON顶层结构
public struct ControlSchema: Codable, Identifiable, Sendable {
    public var id: String?
    public let widgettype: String
    public var options: ControlOptions
    public var binds: [BindSchema]?
    public var subwidgets: [ControlSchema]?
    
    /// 运行时生成的唯一ID（当JSON未提供id时）
    public var runtimeId: String = UUID().uuidString.prefix(8).lowercased()
    
    public var effectiveId: String {
        id ?? runtimeId
    }
    
    public init(
        id: String? = nil,
        widgettype: String,
        options: ControlOptions = .init(),
        binds: [BindSchema]? = nil,
        subwidgets: [ControlSchema]? = nil
    ) {
        self.id = id
        self.widgettype = widgettype
        self.options = options
        self.binds = binds
        self.subwidgets = subwidgets
    }
    
    /// 自定义解码：options缺失时默认为空，避免Filler等无options的widget解码失败
    public init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)
        self.id = try container.decodeIfPresent(String.self, forKey: .id)
        self.widgettype = try container.decode(String.self, forKey: .widgettype)
        self.options = try container.decodeIfPresent(ControlOptions.self, forKey: .options) ?? ControlOptions()
        self.binds = try container.decodeIfPresent([BindSchema].self, forKey: .binds)
        self.subwidgets = try container.decodeIfPresent([ControlSchema].self, forKey: .subwidgets)
    }
    
    private enum CodingKeys: String, CodingKey {
        case id, widgettype, options, binds, subwidgets
    }
}

/// 控件选项 — 使用字典+Codable混合方式
public struct ControlOptions: Codable, Sendable {
    // 通用属性
    public var width: String?
    public var height: String?
    public var cwidth: Double?
    public var cheight: Double?
    public var bgcolor: String?
    public var color: String?
    public var css: String?
    public var padding: String?
    public var cursor: String?
    public var spacing: Double?
    public var alignItems: String?
    
    // Text/Title
    public var text: String?
    public var otext: String?
    public var i18n: Bool?
    public var level: Int?
    
    // Button
    public var label: String?
    public var actiontype: String?
    public var url: String?
    public var icon: String?
    
    // Input/Textarea
    public var name: String?
    public var placeholder: String?
    public var value: String?
    public var defaultvalue: String?
    public var required: Bool?
    public var uitype: String?
    public var title: String?
    public var rules: [ValidationRule]?
    public var codes: [CodeItem]?
    
    // Select/Code
    public var data: [CodeItem]?
    public var dataurl: String?
    public var valueField: String?
    public var textField: String?
    
    // Form
    public var fields: [FieldSchema]?
    public var submit_url: String?
    public var submit_label: String?
    public var show_label: Bool?
    
    // Tabular
    public var data_url: String?
    public var data_method: String?
    public var page_rows: Int?
    public var row_options: RowOptions?
    public var toolbar: ToolbarSchema?
    
    // TabView
    public var tabs: [TabItem]?
    public var activeTab: Int?
    
    // DynamicColumn
    public var col_cwidth: Double?
    public var col_cgap: Double?
    public var col_width: Double?
    
    // PopupWindow
    public var popup_options: PopupOptions?
    public var auto_open: Bool?
    public var archor: String?
    public var dismiss_events: [String]?
    
    // Menu
    public var items: [MenuItemSchema]?
    public var target: String?
    
    // HTML
    public var html: String?
    
    // Image
    public var src: String?
    public var alt: String?
    
    // VideoPlayer
    public var autoplay: Bool?
    public var controls: Bool?
    
    // Misc
    public var fontsize: String?
    public var cfontsize: Double?
    
    public init() {}
}

/// 绑定定义 — event→action映射
public struct BindSchema: Codable, Sendable {
    public let wid: String          // 事件源widget id
    public let event: String        // 事件名
    public let actiontype: String   // 动作类型（9种）
    public var target: String?      // 目标widget id
    public var options: BindOptions?
    public var mode: String?        // replace/append
    public var method: String?      // method名（actiontype=method时）
    public var script: String?      // 内联脚本（actiontype=script时）
    public var popup_options: PopupOptions?
    public var datawidget: String?  // 数据源widget
    public var event_params: String?
}

/// 绑定选项
public struct BindOptions: Codable, Sendable {
    public var url: String?
    public var params: [String: String]?
    
    public init(url: String? = nil, params: [String: String]? = nil) {
        self.url = url
        self.params = params
    }
}

/// 弹出窗口选项
public struct PopupOptions: Codable, Sendable {
    public var title: String?
    public var cwidth: Double?
    public var cheight: Double?
    public var width: String?
    public var height: String?
    public var archor: String?
    public var eventpos: Bool?
    public var dismiss_events: [String]?
    
    public init() {}
}

/// 表单字段定义
public struct FieldSchema: Codable, Sendable {
    public var name: String
    public var label: String?
    public var title: String?
    public var type: String?
    public var uitype: String?
    public var required: Bool?
    public var cwidth: Double?
    public var placeholder: String?
    public var value: String?
    public var defaultvalue: String?
    public var codes: [CodeItem]?
    public var data: [CodeItem]?
    public var dataurl: String?
    public var valueField: String?
    public var textField: String?
    public var rules: [ValidationRule]?
    
    public var effectiveLabel: String { label ?? title ?? name }
    public var effectiveUitype: String { uitype ?? type ?? "str" }
}

/// 验证规则
public struct ValidationRule: Codable, Sendable {
    public let type: String
    public var value: String?
    public var message: String?
}

/// 代码项（下拉选项）
public struct CodeItem: Codable, Sendable, Identifiable {
    public var id: String { value }
    public let value: String
    public let text: String
}

/// Tabular行选项
public struct RowOptions: Codable, Sendable {
    public var fields: [FieldSchema]?
    public var browserfields: BrowserFields?
}

/// 浏览器字段配置
public struct BrowserFields: Codable, Sendable {
    public var exclouded: [String]?
    public var cwidths: [String: Double]?
    public var alters: [String: FieldSchema]?
}

/// 工具栏定义
public struct ToolbarSchema: Codable, Sendable {
    public var tools: [ToolbarTool]?
}

/// 工具栏按钮
public struct ToolbarTool: Codable, Sendable {
    public var name: String
    public var label: String?
    public var icon: String?
    public var selected_row: Bool?
    public var css: String?
}

/// TabView项
public struct TabItem: Codable, Sendable {
    public var label: String
    public var icon: String?
    public var content: ControlSchema?
}

/// 菜单项
public struct MenuItemSchema: Codable, Sendable {
    public var name: String
    public var label: String
    public var icon: String?
    public var url: String?
    public var submenu: [MenuItemSchema]?
    public var binds: [BindSchema]?
}

// MARK: - 有效WidgetType枚举

public enum WidgetType: String, CaseIterable, Sendable {
    // 文本
    case text = "Text"
    case title1 = "Title1", title2 = "Title2", title3 = "Title3"
    case title4 = "Title4", title5 = "Title5", title6 = "Title6"
    case label = "Label"
    
    // 输入
    case input = "Input"
    case textarea = "Textarea"
    case select = "Select"
    case uiCode = "UiCode"
    case uiStr = "UiStr"
    case uiNumber = "UiNumber"
    case uiDate = "UiDate"
    case uiText = "UiText"
    
    // 按钮
    case button = "Button"
    
    // 布局
    case vbox = "VBox"
    case hbox = "HBox"
    case vScrollPanel = "VScrollPanel"
    case hScrollPanel = "HScrollPanel"
    case filler = "Filler"
    case dynamicColumn = "DynamicColumn"
    
    // 数据
    case tabular = "Tabular"
    case dataViewer = "DataViewer"
    case form = "Form"
    case inlineForm = "InlineForm"
    
    // 导航
    case tabView = "TabView"
    case menu = "Menu"
    
    // 弹窗
    case popupWindow = "PopupWindow"
    
    // 其他
    case card = "Card"
    case html = "Html"
    case image = "Image"
    case urlwidget = "urlwidget"
    
    // 特殊
    case popup = "Popup"
    
    public var isLayout: Bool {
        [.vbox, .hbox, .vScrollPanel, .hScrollPanel, .dynamicColumn, .card].contains(self)
    }
    
    public var isText: Bool {
        [.text, .title1, .title2, .title3, .title4, .title5, .title6, .label].contains(self)
    }
    
    public var isInput: Bool {
        [.input, .textarea, .select, .uiCode, .uiStr, .uiNumber, .uiDate, .uiText].contains(self)
    }
}

// MARK: - 有效ActionType枚举

public enum ActionType: String, CaseIterable, Sendable {
    case newwindow      // 新窗口打开
    case iframe         // iframe加载
    case urlwidget      // 加载UI内容到目标（最常用）
    case urldata        // 获取数据更新目标
    case bricks         // 从配置实例化widget
    case registerfunction // 注册函数
    case method         // 调用目标widget方法
    case script         // 执行内联脚本
    case event          // 派发自定义事件
    
    public static var validNames: [String] {
        allCases.map { $0.rawValue }
    }
}