#!/bin/dash

RELEASE=2.6.3
ACMEACCOUNT=@gmail.com

main() {
	TraefikConfig
	TraefikEtcCertsSelfsigned
	TraefikEtcServices
	TraefikEtcConfig
	TraefikEtcIptable
	TraefikBinUpdateTraefik
	TraefikService
}


TraefikConfig() {
	RELEASE=$(whiptail --title "Release" --inputbox "" 0 30 "${RELEASE}" 3>&1 1>&2 2>&3)
	ACMEACCOUNT=$(whiptail --title "ACME Account" --inputbox "" 0 30 "${ACMEACCOUNT}" 3>&1 1>&2 2>&3)
	if [ "$?" = "0" ]; then
		if [ "${proxy}" != "" ]; then
			echo "Acquire::http { Proxy \"${proxy}\"; };" > /etc/apt/apt.conf.d/02proxy
		fi
	fi
}

TraefikEtcCertsSelfsigned() {
	mkdir -p /etc/traefik/certs
	openssl ecparam -name secp256r1 -genkey -out /etc/traefik/certs/self.key
	openssl req -new -x509 -key /etc/traefik/certs/self.key -sha256 -nodes -out /etc/traefik/certs/self.crt -days 3650
}

TraefikEtcServices() {
	mkdir -p /etc/traefik/services
	TraefikEtcServicesShared
	TraefikEtcServicesDefault
}

TraefikEtcServicesShared() {
	cat >> /etc/traefik/services/_shared.yaml << "EOF"
tls:
  stores:
    default:
      defaultCertificate:
        certFile: "/etc/traefik/certs/self.crt"
        keyFile: "/etc/traefik/certs/self.key"

  options:
    default:
      minVersion: "VersionTLS12"
      # sniStrict: true
      cipherSuites:
        - TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
        - TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
        - TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
        - TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
        - TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305
        - TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305

    mintls13:
      minVersion: "VersionTLS13"

http:
  middlewares:
    to-https:
      redirectScheme:
        scheme: "https"
        permanent: true
    to-no-www:
      redirectRegex:
        regex: "^https://www.(.*)"
        replacement: "https://${1}"
        permanent: true

    hsts-min:
      headers:
        sslRedirect: true
        stsIncludeSubdomains: false
        stsPreload: true
        stsSeconds: 63072000
        contentTypeNosniff: true
        accessControlMaxAge: 100
        addVaryheader: true
    hsts_light:
      headers:
        sslRedirect: true
        frameDeny: true
        stsIncludeSubdomains: false
        stsPreload: true
        stsSeconds: 63072000
        contentTypeNosniff: true
        accessControlMaxAge: 100
        addVaryheader: true
    hsts:
      headers:
        sslRedirect: true
        frameDeny: true
        stsIncludeSubdomains: false
        stsPreload: true
        stsSeconds: 63072000
        contentTypeNosniff: true
        accessControlMaxAge: 100
        addVaryheader: true
        referrerPolicy: "origin-when-cross-origin"
    hsts-strict:
      headers:
        sslRedirect: true
        frameDeny: true
        stsIncludeSubdomains: false
        stsPreload: true
        stsSeconds: 63072000
        contentTypeNosniff: true
        accessControlMaxAge: 100
        addVaryheader: true
        contentSecurityPolicy: "script-src 'self'"
        referrerPolicy: "origin-when-cross-origin"

  services:
    dummy:
      loadBalancer:
        servers:
          - url: "https://127.0.0.1:2"
 
    # matomo:
    #  loadBalancer:
    #    servers:
    #      - url: "https://x.x.x.x:xxx"
EOF
}

TraefikEtcServicesDefault() {
	cat >> /etc/traefik/services/_default.yaml << "EOF"
http:
  routers:
    _default:
      entryPoints:
        - http
      rule: "PathPrefix(`/`)"
      # priority: 100
      # service: _default-matomo
      service: _default

    _default-secure:
      entryPoints:
        - https
      rule: "PathPrefix(`/`)"
      # priority: 100
      # service: _default-matomo
      service: _default
      tls: {}

  services:
    # _default-matomo:
    #  mirroring:
    #    service: _default
    #    maxBodySize: 1024
    #    mirrors:
    #      - name: matomo
    #        percent: 100

    _default:
      loadBalancer:
        servers:
          - url: https://127.0.0.1:2
EOF
}

TraefikEtcConfig() {
	cat >> /etc/traefik/traefik.yaml << "EOF"
entryPoints:
  http:
   address: ":80"
  https:
   address: ":443"
  traefik:
   address: ":8099"

api:
  dashboard: true
  insecure: true

serversTransport:
  insecureSkipVerify: true

providers:
  file:
    directory: "/etc/traefik/services/"
    watch: true

certificatesResolvers:
  acmev2:
    acme:
      email: "X{ACMEACCOUNT}"
      caserver: "https://acme-v02.api.letsencrypt.org/directory"
      storage: "/etc/traefik/certs/acmev2.json"
      keyType: "EC384"
      tlsChallenge: {}
  acmev2-staging:
    acme:
      email: "X{ACMEACCOUNT}"
      caserver: "https://acme-staging-v02.api.letsencrypt.org/directory"
      storage: "/etc/traefik/certs/acmev2-staging.json"
      keyType: "EC384"
      tlsChallenge: {}
EOF

# sed -i /X{ACMEACCOUNT}/${ACMEACCOUNT}/g /etc/traefik/traefik.yaml

}

TraefikEtcIptable() {
  if [ -f "/etc/iptables/rules-save" ]; then
    sed -i '/^-A INPUT -i lo -j ACCEPT.*/a -A INPUT -p tcp -m tcp --dport 8099 -m state --state NEW -j ACCEPT' /etc/iptables/rules-save
    sed -i '/^-A INPUT -i lo -j ACCEPT.*/a -A INPUT -p tcp -m tcp --dport 80 -m state --state NEW -j ACCEPT' /etc/iptables/rules-save
    sed -i '/^-A INPUT -i lo -j ACCEPT.*/a -A INPUT -p tcp -m tcp --dport 443 -m state --state NEW -j ACCEPT' /etc/iptables/rules-save
    sed -i '/^-A INPUT -i lo -j ACCEPT.*/a # Traefik' /etc/iptables/rules-save
    iptables-restore /etc/iptables/rules-save
  fi
}

TraefikBinUpdateTraefik() {
	cat >> /usr/local/bin/update-traefik << "EOF"
#!/bin/ash

if [[ -z ${1} ]]; then
	echo "update-traefik version"
	echo "version : x.x.x"
	exit 1
fi
version=${1}
mkdir -p /tmp/traefik
cd /tmp/traefik
wget https://github.com/traefik/traefik/releases/download/v${version}/traefik_v${version}_linux_amd64.tar.gz
tar -xf traefik_v${version}_linux_amd64.tar.gz
systemctl stop traefik
cp traefik /usr/local/bin
systemctl start traefik
cd
rm -R /tmp/traefik
EOF
	chmod 755 /usr/local/bin/update-traefik
	update-traefik "${RELEASE}"
}

TraefikService() {
	cat >> /etc/init.d/traefik << "EOF"
#!/sbin/openrc-run

name="traefik"
command="/usr/local/bin/traefik"
command_args="-configFile /etc/traefik/traefik.yaml"
command_background=true
pidfile=/run/traefik.pid

depend() {
  need net
}
EOF
	chmod 755 /etc/init.d/traefik
	
	rc-update add traefik boot
	service traefik start
}


main