function _array_like_to_array(arr, len) {
    if (len == null || len > arr.length) len = arr.length;
    for(var i = 0, arr2 = new Array(len); i < len; i++)arr2[i] = arr[i];
    return arr2;
}
function _array_with_holes(arr) {
    if (Array.isArray(arr)) return arr;
}
function _iterable_to_array_limit(arr, i) {
    var _i = arr == null ? null : typeof Symbol !== "undefined" && arr[Symbol.iterator] || arr["@@iterator"];
    if (_i == null) return;
    var _arr = [];
    var _n = true;
    var _d = false;
    var _s, _e;
    try {
        for(_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true){
            _arr.push(_s.value);
            if (i && _arr.length === i) break;
        }
    } catch (err) {
        _d = true;
        _e = err;
    } finally{
        try {
            if (!_n && _i["return"] != null) _i["return"]();
        } finally{
            if (_d) throw _e;
        }
    }
    return _arr;
}
function _non_iterable_rest() {
    throw new TypeError("Invalid attempt to destructure non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
function _sliced_to_array(arr, i) {
    return _array_with_holes(arr) || _iterable_to_array_limit(arr, i) || _unsupported_iterable_to_array(arr, i) || _non_iterable_rest();
}
function _unsupported_iterable_to_array(o, minLen) {
    if (!o) return;
    if (typeof o === "string") return _array_like_to_array(o, minLen);
    var n = Object.prototype.toString.call(o).slice(8, -1);
    if (n === "Object" && o.constructor) n = o.constructor.name;
    if (n === "Map" || n === "Set") return Array.from(n);
    if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _array_like_to_array(o, minLen);
}
import { useCallback, useEffect, useMemo, useRef, useState } from "react";
export var useSpeechSynthesis = function(options) {
    var text = options.text, _options_defaultRate = options.defaultRate, defaultRate = _options_defaultRate === void 0 ? 1 : _options_defaultRate;
    var isSupported = useMemo(function() {
        return typeof window !== 'undefined' && !!window.speechSynthesis;
    }, []);
    var _useState = _sliced_to_array(useState(defaultRate), 2), rate = _useState[0], setRate = _useState[1];
    var _useState1 = _sliced_to_array(useState(false), 2), isPlaying = _useState1[0], setIsPlaying = _useState1[1];
    var utterRef = useRef(null);
    var stop = useCallback(function() {
        if (!isSupported) return;
        try {
            if (utterRef.current) {
                utterRef.current.onend = null;
                utterRef.current.onerror = null;
            }
            window.speechSynthesis.cancel();
        } catch (e) {}
        utterRef.current = null;
        setIsPlaying(false);
    }, [
        isSupported
    ]);
    var start = useCallback(function() {
        if (!isSupported) return;
        if (!text) return;
        try {
            if (utterRef.current) {
                utterRef.current.onend = null;
                utterRef.current.onerror = null;
            }
            window.speechSynthesis.cancel();
            var utter = new SpeechSynthesisUtterance(text);
            utter.rate = rate;
            utterRef.current = utter;
            utter.onend = function() {
                setIsPlaying(false);
                utterRef.current = null;
            };
            utter.onerror = function() {
                setIsPlaying(false);
                utterRef.current = null;
            };
            window.speechSynthesis.speak(utter);
            setIsPlaying(true);
        } catch (e) {
            setIsPlaying(false);
        }
    }, [
        isSupported,
        text,
        rate
    ]);
    var pause = useCallback(function() {
        if (!isSupported) return;
        try {
            window.speechSynthesis.pause();
        } catch (e) {}
    }, [
        isSupported
    ]);
    var resume = useCallback(function() {
        if (!isSupported) return;
        try {
            window.speechSynthesis.resume();
        } catch (e) {}
    }, [
        isSupported
    ]);
    // 变更倍速：若正在播报，重启使之生效
    useEffect(function() {
        if (!isSupported) return;
        if (!isPlaying) return;
        start();
    }, [
        rate
    ]);
    // 卸载时清理（不触发 onStop）
    useEffect(function() {
        if (!isSupported) return;
        return function() {
            if (utterRef.current) {
                try {
                    utterRef.current.onend = null;
                    utterRef.current.onerror = null;
                    window.speechSynthesis.cancel();
                } catch (e) {}
                utterRef.current = null;
            }
            setIsPlaying(false);
        };
    }, [
        isSupported
    ]);
    return {
        isSupported: isSupported,
        isPlaying: isPlaying,
        rate: rate,
        setRate: setRate,
        start: start,
        stop: stop,
        pause: pause,
        resume: resume
    };
};
export default useSpeechSynthesis;
