//
//  TabBarNavigator.swift
//  suixinkanUITests
//
//  Created by Codex on 2026/6/26.
//

import XCTest

/// 主 Tab 导航封装。
enum TabBarNavigator {
    enum Tab: String, CaseIterable {
        case home = "首页"
        case orders = "订单"
        case statistics = "数据"
        case profile = "我的"
    }

    /// 切换到指定 Tab 并等待页面稳定。
    static func select(_ tab: Tab, app: SuixinkanApp, file: StaticString = #filePath, line: UInt = #line) {
        let button = bottomTabButton(named: tab.rawValue, in: app)
        XCTAssertTrue(button.waitForExistence(timeout: 8), "未找到 Tab：\(tab.rawValue)", file: file, line: line)
        button.tap()
        app.waitForGlobalLoadingToDisappear()
    }

    /// 在底部自定义 TabBar 中定位唯一可点击的 Tab 按钮。
    private static func bottomTabButton(named title: String, in app: SuixinkanApp) -> XCUIElement {
        let candidates = app.application.buttons.matching(NSPredicate(format: "label == %@", title))
        let screenHeight = app.application.windows.element(boundBy: 0).frame.height
        var bestMatch: XCUIElement?
        var bestY: CGFloat = -1

        for index in 0..<candidates.count {
            let candidate = candidates.element(boundBy: index)
            guard candidate.exists else { continue }

            let midY = candidate.frame.midY
            guard midY > screenHeight * 0.72 else { continue }

            if midY > bestY {
                bestMatch = candidate
                bestY = midY
            }
        }

        return bestMatch ?? candidates.firstMatch
    }
}