%% 语音识别转文字 — 类图
classDiagram
    class Wx {
        <<interface>>
        +config(options: WxConfigOptions) void
        +ready(callback: Function) void
        +error(callback: Function) void
        +startRecord() void
        +stopRecord(options: object) void
        +translateVoice(options: object) void
    }

    class JsapiConfig {
        +corp_id: string
        +agent_id: string
        +timestamp: number
        +nonce_str: string
        +signature: string
    }

    class UseWecomVoiceReturn {
        +state: VoiceState
        +init() Promise~void~
        +startRecording() Promise~void~
        +stopAndTranslate() Promise~string~
        +isSupported() boolean
    }

    class VoiceState {
        +isReady: boolean
        +isRecording: boolean
        +isTranslating: boolean
        +error: string|null
    }

    class SpeechRecognition {
        <<interface>>
        +lang: string
        +continuous: boolean
        +interimResults: boolean
        +start() void
        +stop() void
        +abort() void
        +onresult: Function
        +onerror: Function
        +onend: Function
    }

    class UseSpeechRecognitionReturn {
        +state: SpeechState
        +start() void
        +stop() void
        +reset() void
    }

    class SpeechState {
        +isListening: boolean
        +interimText: string
        +finalText: string
        +error: string|null
        +isSupported: boolean
    }

    class InputBar {
        +inputText: string
        +handleVoiceStart() void
        +handleVoiceEnd() void
    }

    class ReplyBox {
        +inputText: string
        +toggleVoice() void
    }

    UseWecomVoiceReturn --> VoiceState
    UseWecomVoiceReturn ..> Wx : uses
    UseWecomVoiceReturn ..> JsapiConfig : fetches
    InputBar --> UseWecomVoiceReturn : composes

    UseSpeechRecognitionReturn --> SpeechState
    UseSpeechRecognitionReturn ..> SpeechRecognition : wraps
    ReplyBox --> UseSpeechRecognitionReturn : composes