// SonicForge Studio Audio Engine Service
(function() {
    let audioCtx = null;

    function getAudioContext() {
        if (!audioCtx) {
            audioCtx = new (window.AudioContext || window.webkitAudioContext)();
        }
        if (audioCtx.state === 'suspended') {
            audioCtx.resume();
        }
        return audioCtx;
    }

    function analyzeAudioBufferChannels(audioBuffer) {
        if (!audioBuffer) return { channels: 1, isStereo: false, label: 'MONO' };
        const numChannels = audioBuffer.numberOfChannels;
        const isStereo = numChannels >= 2;
        return {
            channels: numChannels,
            isStereo: isStereo,
            label: isStereo ? 'STEREO' : 'MONO',
            sampleRate: audioBuffer.sampleRate,
            duration: audioBuffer.duration,
            length: audioBuffer.length
        };
    }

    async function decodeAudioFile(file) {
        const ctx = getAudioContext();
        const arrayBuffer = await file.arrayBuffer();
        const audioBuffer = await ctx.decodeAudioData(arrayBuffer);
        const channelInfo = analyzeAudioBufferChannels(audioBuffer);
        return { audioBuffer, channelInfo };
    }

    window.SonicAudio = {
        getAudioContext,
        analyzeAudioBufferChannels,
        decodeAudioFile
    };
})();