import SwiftUI

// MARK: - 输入组件工厂
struct InputComponentFactory {
    
    // 根据QR码类型返回相应的输入组件
    static func createInputComponent(
        for qrCodeType: QRCodeType,
        content: Binding<String>,
        emailAddress: Binding<String>,
        emailSubject: Binding<String>,
        emailBody: Binding<String>,
        emailCc: Binding<String>,
        emailBcc: Binding<String>,
        focusedEmailField: FocusState<EmailInputView.EmailField?>,
        isContentFieldFocused: FocusState<Bool>,
        ssid: Binding<String>,
        password: Binding<String>,
        encryptionType: Binding<WiFiInputView.WiFiEncryptionType>,
        focusedWiFiField: FocusState<WiFiInputView.WiFiField?>,
        firstName: Binding<String>,
        lastName: Binding<String>,
        phone: Binding<String>,
        email: Binding<String>,
        company: Binding<String>,
        title: Binding<String>,
        address: Binding<String>,
        website: Binding<String>,
        focusedContactField: FocusState<ContactInputView.ContactField?>,
        latitude: Binding<String>,
        longitude: Binding<String>,
        locationName: Binding<String>,
        focusedLocationField: FocusState<LocationInputView.LocationField?>,
        eventTitle: Binding<String>,
        eventDescription: Binding<String>,
        startDate: Binding<Date>,
        endDate: Binding<Date>,
        location: Binding<String>,
        focusedCalendarField: FocusState<CalendarInputView.CalendarField?>,
        username: Binding<String>,
        message: Binding<String>,
        focusedSocialField: FocusState<SocialInputView.SocialField?>,
        phoneNumber: Binding<String>,
        phoneMessage: Binding<String>,
        focusedPhoneField: FocusState<PhoneInputView.PhoneField?>,
        url: Binding<String>,
        isUrlFieldFocused: FocusState<Bool>
    ) -> AnyView {
        
        switch qrCodeType {
        case .mail:
            return AnyView(
                EmailInputView(
                    emailAddress: emailAddress,
                    emailSubject: emailSubject,
                    emailBody: emailBody,
                    emailCc: emailCc,
                    emailBcc: emailBcc,
                    focusedEmailField: focusedEmailField
                )
            )
            
        case .wifi:
            return AnyView(
                WiFiInputView(
                    ssid: ssid,
                    password: password,
                    encryptionType: encryptionType,
                    focusedField: focusedWiFiField
                )
            )
            
        case .vcard, .mecard:
            return AnyView(
                ContactInputView(
                    firstName: firstName,
                    lastName: lastName,
                    phone: phone,
                    email: email,
                    company: company,
                    title: title,
                    address: address,
                    website: website,
                    focusedField: focusedContactField
                )
            )
            
        case .location:
            return AnyView(
                LocationInputView(
                    latitude: latitude,
                    longitude: longitude,
                    locationName: locationName,
                    focusedField: focusedLocationField
                )
            )
            
        case .calendar:
            return AnyView(
                CalendarInputView(
                    eventTitle: eventTitle,
                    eventDescription: eventDescription,
                    startDate: startDate,
                    endDate: endDate,
                    location: location
                )
            )
            
        case .instagram, .facebook, .twitter, .tiktok, .snapchat, .whatsapp, .viber, .spotify:
            let platform = SocialInputView.SocialPlatform(rawValue: qrCodeType.rawValue.capitalized) ?? .instagram
            return AnyView(
                SocialInputView(
                    username: username,
                    message: message,
                    platform: platform,
                    focusedField: focusedSocialField
                )
            )
            
        case .phone, .sms:
            let inputType: PhoneInputView.PhoneInputType = qrCodeType == .phone ? .phone : .sms
            return AnyView(
                PhoneInputView(
                    phoneNumber: phoneNumber,
                    message: phoneMessage,
                    inputType: inputType,
                    focusedField: focusedPhoneField
                )
            )
            
        case .url:
            return AnyView(
                URLInputView(
                    url: url,
                    isUrlFieldFocused: isUrlFieldFocused
                )
            )
            
        default:
            // 默认使用通用文本输入组件
            return AnyView(
                TextInputView(
                    content: content,
                    isContentFieldFocused: isContentFieldFocused,
                    placeholder: getPlaceholderText(for: qrCodeType),
                    maxCharacters: getMaxCharacters(for: qrCodeType)
                )
            )
        }
    }
    
    // 获取占位符文本
    private static func getPlaceholderText(for qrCodeType: QRCodeType) -> String {
        switch qrCodeType {
        case .text:
            return "输入任意文本内容..."
        case .phone:
            return "输入电话号码..."
        case .sms:
            return "输入短信内容..."
        case .wifi:
            return "输入WiFi信息..."
        case .vcard:
            return "输入联系人信息..."
        case .mecard:
            return "输入联系人信息..."
        case .location:
            return "输入地理位置..."
        case .calendar:
            return "输入日历事件信息..."
        case .instagram:
            return "输入Instagram信息..."
        case .facebook:
            return "输入Facebook信息..."
        case .spotify:
            return "输入Spotify信息..."
        case .twitter:
            return "输入Twitter信息..."
        case .whatsapp:
            return "输入WhatsApp信息..."
        case .viber:
            return "输入Viber信息..."
        case .snapchat:
            return "输入Snapchat信息..."
        case .tiktok:
            return "输入TikTok信息..."
        case .mail:
            return "输入邮件内容..."
        case .url:
            return "输入网址..."
        }
    }
    
    // 获取最大字符数
    private static func getMaxCharacters(for qrCodeType: QRCodeType) -> Int {
        switch qrCodeType {
        case .text:
            return 150
        case .phone, .sms:
            return 100
        case .wifi:
            return 200
        case .vcard, .mecard:
            return 500
        case .location:
            return 200
        case .calendar:
            return 300
        case .instagram, .facebook, .twitter, .tiktok, .snapchat, .whatsapp, .viber, .spotify:
            return 200
        case .mail:
            return 1200
        case .url:
            return 500
        }
    }
}