package main

import (
	"flag"
	"fmt"
	"cerca/server"
	"cerca/util"
	"os"
	"strings"
)

func readAllowlist(location string) []string {
	ed := util.Describe("read allowlist")
	data, err := os.ReadFile(location)
	ed.Check(err, "read file")
	list := strings.Split(strings.TrimSpace(string(data)), "\n")
	for i, fullpath := range list {
		list[i] = strings.TrimPrefix(strings.TrimPrefix(fullpath, "https://"), "http://")
	}
	return list
}

func complain(msg string) {
	fmt.Printf("cerca: %s\n", msg)
	os.Exit(0)
}

func main() {
	// TODO (2022-01-10): somehow continually update veri sites by scraping merveilles webring sites || webring domain
	var allowlistLocation string
	var sessionKey string
	var dev bool
	flag.BoolVar(&dev, "dev", false, "trigger development mode")
	flag.StringVar(&allowlistLocation, "allowlist", "", "domains which can be used to read verification codes from during registration")
	flag.StringVar(&sessionKey, "authkey", "", "session cookies authentication key")
	flag.Parse()
	if len(sessionKey) == 0 {
		complain("please pass a random session auth key with --authkey")
	} else if len(allowlistLocation) == 0 {
		complain("please pass a file containing the verification code domain allowlist")
	}
	allowlist := readAllowlist(allowlistLocation)
	allowlist = append(allowlist, "merveilles.town")
	server.Serve(allowlist, sessionKey, dev)
}