package api

import (
	"fmt"
	"io"
	"log"
	"net/http"
	"os"
)

// FetchPlaylist downloads a playlist from url and writes it to destPath.
func FetchPlaylist(url, destPath string) error {
	log.Printf("[playlist] fetching from %s", url)
	resp, err := http.Get(url) //nolint:gosec
	if err != nil {
		return fmt.Errorf("fetch playlist: %w", err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		return fmt.Errorf("fetch playlist: server returned %s", resp.Status)
	}
	if err := os.MkdirAll("/data", 0o755); err != nil {
		return fmt.Errorf("mkdir /data: %w", err)
	}
	f, err := os.Create(destPath)
	if err != nil {
		return fmt.Errorf("create playlist file: %w", err)
	}
	defer f.Close()
	if _, err := io.Copy(f, resp.Body); err != nil {
		return fmt.Errorf("write playlist file: %w", err)
	}
	log.Printf("[playlist] saved to %s", destPath)
	return nil
}