// GoCheese -- Python private package repository and caching proxy
// Copyright (C) 2019-2024 Sergey Matveev <stargrave@stargrave.org>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 3 of the License.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package main

import (
	"fmt"
	"os"
)

const (
	DefaultBind             = "[::]:8080"
	DefaultMaxClients       = 128
	DefaultNoRefreshURLPath = "/norefresh/"
	DefaultRefreshURLPath   = "/simple/"
	DefaultJSONURLPath      = "/pypi/"
	DefaultPyPIURL          = "https://pypi.org/simple/"
	DefaultJSONURL          = "https://pypi.org/pypi/"

	Warranty = `This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, version 3 of the License.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.`
)

func usage() {
	fmt.Fprintf(os.Stderr, `Usage: gocheese [OPTIONS ...] /path/to/packages

Network transport options:
  -ucspi          -- Work as UCSPI-TCP service instead of listening
  -bind HOST:PORT -- TCP address to bind to (default: %s)
  -maxclients N   -- Maximal amount of simultaneous clients (default: %d)

TLS enabling options:
  -tls-cert PEM -- Path to TLS X.509 certificate
  -tls-key PEM  -- Path to TLS X.509 private key

HTTP endpoints:
  -norefresh URLPATH -- Non-refreshing Simple API path (default: %s)
  -refresh URLPATH   -- Auto-refreshing Simple API path (default: %s)
  -json URLPATH      -- JSON API path (default: %s)

Upstream PyPI:
  -pypi URL      -- Upstream Simple API (default: %s)
  -pypi-json URL -- Enable and use specified JSON API (default: %s)
                    Disabled if empty.
  -pypi-cert-hash HEX(SHA256(SPKI)) -- Authenticate upstream by its
                                       X.509 certificate's hash
Password management:
  -passwd PATH      -- Path to readable FIFO for loading passwords
  -passwd-list PATH -- Path to writeable FIFO for listing logins
  -passwd-check     -- Verify passwords format from stdin, then exit
  -auth-required    -- Require authorisation even for read-only endpoints

Other options:
  -log-timestamped -- Prepend timestamp to log messages
  -fsck            -- Run integrity check of all packages
  -version         -- Print version information
  -warranty        -- Print warranty information

GOCHEESE_NO_SYNC=1 environment variable disable filesystem fsyncs.
`,
		DefaultBind,
		DefaultMaxClients,
		DefaultNoRefreshURLPath,
		DefaultRefreshURLPath,
		DefaultJSONURLPath,
		DefaultPyPIURL,
		DefaultJSONURLPath,
	)
}