package main

import (
	"fmt"
	"io"
	"strings"
)

func isHelpArg(arg string) bool {
	return arg == "-h" || arg == "--help"
}

func commandWantsHelp(args []string) bool {
	for _, arg := range args {
		if isHelpArg(arg) {
			return true
		}
	}
	return false
}

func printMainHelp(w io.Writer) {
	fmt.Fprint(w, `streamrip-go

Usage:
  rip [global options] <command> [command options]
  rip help [command]

Commands:
  url       Rip one or more URLs
  file      Rip URLs or IDs from a file
  id        Rip by source, media type, and ID
  search    Search a provider and download selected results
  lastfm    Import a Last.fm playlist
  config    Manage configuration
  database  Inspect download databases

Global options:
  -f, --folder <path>        Override downloads folder
  -q, --quality <0-4>        Override provider quality
  -c, --codec <codec>        Convert after download: ALAC, FLAC, OGG, MP3, AAC
  -ndb, --no-db              Ignore download database
      --no-progress          Disable progress bars
      --no-ssl-verify        Disable TLS verification
      --config-path <path>   Use a custom config file
  -v, -vv                    Verbose logging
  -h, --help                 Show help

Run 'rip help <command>' for command-specific help.
`)
}

func printCommandHelp(w io.Writer, command string) bool {
	switch strings.ToLower(strings.TrimSpace(command)) {
	case "url":
		fmt.Fprint(w, `Usage:
  rip url <url...> [--force|--ignore-db]

Rip one or more provider URLs.

Examples:
  rip url https://www.beatport.com/release/example/123
  rip url https://play.qobuz.com/album/abc --force

Options:
  --force, --ignore-db   Redownload even if already in the database
`)
	case "file":
		fmt.Fprint(w, `Usage:
  rip file <path> [--force|--ignore-db]

Rip URLs or JSON ID entries from a file.

Options:
  --force, --ignore-db   Redownload even if already in the database
`)
	case "id":
		fmt.Fprint(w, `Usage:
  rip id <source> <media-type> <id> [quality] [--force|--ignore-db]

Rip an item by provider ID.

Sources:
  qobuz, tidal, deezer, yandex, beatport, soundcloud

Media types:
  track, album, playlist, artist, label, chart, video

Options:
  quality                Override quality for this rip, 0-4
  --force, --ignore-db   Redownload even if already in the database
`)
	case "search":
		fmt.Fprint(w, `Usage:
  rip search <source> <media-type> <query...> [options]

Search a provider and optionally download selected results.

Sources:
  qobuz, tidal, deezer, yandex, beatport, soundcloud

Media types:
  track, album, playlist, artist, label, chart, video

Options:
  --limit N              Maximum results to show
  --first                Download the first result without prompting
  --no-download          Show results only
  --output-file <path>   Write results as JSON
  --force, --ignore-db   Redownload even if already in the database
`)
	case "lastfm":
		fmt.Fprint(w, `Usage:
  rip lastfm [--source SOURCE] [--fallback-source SOURCE] <playlist_url>

Import a Last.fm playlist and resolve tracks through configured providers.

Options:
  --source SOURCE           Primary lookup source
  --fallback-source SOURCE  Fallback lookup source
`)
	case "config":
		fmt.Fprint(w, `Usage:
  rip config <open|reset|path> [options]

Manage configuration.

Commands:
  open       Open the config file in an editor
  reset      Reset config to defaults
  path       Print the config path

Options:
  -v, --vim  Use Vim for 'rip config open'
  -y, --yes  Confirm 'rip config reset' without prompting
`)
	case "database":
		fmt.Fprint(w, `Usage:
  rip database browse <downloads|failed>

Inspect local download databases.
`)
	case "dev-help":
		printDeveloperHelp(w)
	default:
		return false
	}
	return true
}

func printDeveloperHelp(w io.Writer) {
	fmt.Fprint(w, `Developer smoke commands:
  soundcloud-smoke
  qobuz-smoke, qobuz-rip-smoke, qobuz-convert-rip-smoke
  qobuz-album-rip-smoke, qobuz-playlist-rip-smoke, qobuz-artist-rip-smoke, qobuz-label-rip-smoke
  qobuz-search-smoke
  tidal-search-smoke, tidal-metadata-smoke, tidal-video-smoke
  tidal-rip-smoke, tidal-album-rip-smoke, tidal-playlist-rip-smoke, tidal-artist-rip-smoke
`)
}