// https://www.dolthub.com/blog/2022-11-28-go-os-exec-patterns/

package main

import (
	"bufio"
	"bytes"
	"fmt"
	"log/slog"
	"os"
	"os/exec"
	"strings"
)

var rawPiperCmd = strings.Split("piper --model /home/toor/piper_models/en_US-ryan-medium.onnx --output-raw", " ")
var rawAplayCmd = strings.Split("aplay -r 22050 -f S16_LE -t raw -", " ")

func say(msg []byte) error {
	buf := new(bytes.Buffer)
	buf.Write(msg)
	r, w, err := os.Pipe()
	if err != nil {
		return err
	}
	defer r.Close()
	piperCmd := exec.Command(rawPiperCmd[0], rawPiperCmd[1:]...)
	piperCmd.Stdin = buf
	piperCmd.Stdout = w
	err = piperCmd.Start()
	if err != nil {
		return err
	}
	w.Close()
	defer piperCmd.Wait()

	aplayCmd := exec.Command(rawAplayCmd[0], rawAplayCmd[1:]...)
	aplayCmd.Stdin = r
	return aplayCmd.Run()
}

func main() {
	fmt.Println("Go say!")
	reader := bufio.NewReader(os.Stdin)

	for {
		fmt.Println("Give me something to say: ")
		msg, err := reader.ReadString('\n')
		if err != nil {
			slog.Error("encoutered error reading from stdin", "error", err)
			continue
		}
		contents := strings.TrimSpace(msg)
		err = say([]byte(contents))
		if err != nil {
			slog.Error("encountered error in say command", "error", err)
		}
	}

}