// Command genius searches metadata or retrieves lyrics from an explicitly selected Genius URL.
package main

import (
	"context"
	"encoding/json"
	"flag"
	"fmt"
	"os"

	"pipu/api/internal/genius"
)

func main() {
	query := flag.String("search", "", "search candidates by artist and title (requires GENIUS_ACCESS_TOKEN)")
	page := flag.String("url", "", "retrieve lyrics from a selected https://genius.com/...-lyrics URL")
	flag.Parse()
	if (*query == "") == (*page == "") || flag.NArg() != 0 {
		fmt.Fprintln(os.Stderr, "provide exactly one of -search or -url")
		os.Exit(2)
	}
	client := genius.New(os.Getenv("GENIUS_ACCESS_TOKEN"))
	var result any
	var err error
	if *query != "" {
		result, err = client.Search(context.Background(), *query)
	} else {
		result, err = client.FetchLyrics(context.Background(), *page)
	}
	if err == nil {
		encoder := json.NewEncoder(os.Stdout)
		encoder.SetIndent("", "  ")
		err = encoder.Encode(result)
	}
	if err != nil {
		fmt.Fprintln(os.Stderr, err)
		os.Exit(1)
	}
}