package audio

import (
	"bytes"
	"context"
	"fmt"
	"io"
	"time"

	"github.com/youpy/go-wav"
	"github.com/hajimehoshi/go-mp3"
)

// PlayWav 播放 WAV 文件(阻塞),直到完成或 context 取消
func PlayWav(ctx context.Context, r io.ReadCloser) error {
	otoCtx, err := initContext()
	if err != nil {
		return fmt.Errorf("音频上下文初始化失败: %w", err)
	}

	// Read the entire file into memory since wav.NewReader needs ReadAt
	data, err := io.ReadAll(r)
	if err != nil {
		r.Close()
		return fmt.Errorf("读取 WAV 文件失败: %w", err)
	}
	r.Close()

	// Create a reader from the buffered data
	dec := wav.NewReader(bytes.NewReader(data))
	player := otoCtx.NewPlayer(dec)
	defer player.Close()

	player.Play()

	done := make(chan struct{})
	go func() {
		for player.IsPlaying() {
			time.Sleep(10 * time.Millisecond)
		}
		close(done)
	}()

	select {
	case <-done:
		return nil
	case <-ctx.Done():
		return ctx.Err()
	}
}

// PlayMP3 播放 MP3 文件(阻塞),直到完成或 context 取消
func PlayMP3(ctx context.Context, r io.ReadCloser) error {
	otoCtx, err := initContext()
	if err != nil {
		return fmt.Errorf("音频上下文初始化失败: %w", err)
	}

	dec, err := mp3.NewDecoder(r)
	if err != nil {
		r.Close()
		return fmt.Errorf("MP3 解码失败: %w", err)
	}
	defer r.Close()

	player := otoCtx.NewPlayer(dec)
	defer player.Close()

	player.Play()

	done := make(chan struct{})
	go func() {
		for player.IsPlaying() {
			time.Sleep(10 * time.Millisecond)
		}
		close(done)
	}()

	select {
	case <-done:
		return nil
	case <-ctx.Done():
		return ctx.Err()
	}
}