#!/usr/bin/env python

import json
import sys

import jinja2

icon_overrides = {
    "acme_dns": "lets-encrypt",
    "extra_services": None,
    "faas": None,
    "forgejo_runner": "forgejo",
    "healthcheck": "healthchecks",
    "mailcowdockerized": "mailcow",
    "reitanlage_oranienburg": "grav",
    "tandoor": "tandoor-recipes",
    "teamspeak_fallback": None,
    "tinytinyrss": "tiny-tiny-rss",
    "wiki_js": "wiki-js",
    "woodpecker": None,
}

icon_format = {
    "linkwarden": "webp",
    "telegraf": "webp",
    "tiny-tiny-rss": "webp",
}

def get_icon(svc):
    svc = icon_overrides.get(svc, svc) or 'docker'
    fmt = icon_format.get(svc, 'svg')
    return f'https://cdn.jsdelivr.net/gh/selfhst/icons/{fmt}/{svc}.{fmt}'

def service_key(svc, data):
    return f"'serguzim.net'.{data['host']}.{svc}"
def host_key(host):
    return f"'serguzim.net'.{host}"


def service_key_find(svc_name, services):
    for svc, data in services.items():
        if svc == svc_name:
            return service_key(svc, data)
    return None

def parse_hosts(hosts):
    result = []
    for host, data in hosts.items():
        result.append({
            'key': host_key(host),
            'name': host,
        })
    return result

def parse_services(services):
    result = []

    postgresql_key = service_key_find("postgresql", services)
    authentik_key = service_key_find("authentik", services)

    for svc, data in services.items():
        svc_key = service_key(svc, data)

        domains = []
        for dns in data.get("dns") or []:
            domain = ""
            if dns.get("target") != "@":
                domain += f"{dns["target"]}."
            domain += dns['domain']
            domains.append(f"- {domain}")

        data['key'] = svc_key
        data['label'] = "\\n".join([svc] + domains)
        data['icon'] = get_icon(svc)

        result.append(data)

    return result

if __name__ == '__main__':
    hosts = []
    services = []

    data = json.loads(sys.stdin.read())

    db_key = service_key_find("postgresql", data["services"])
    auth_key = service_key_find("authentik", data["services"])
    monitoring_key = service_key_find("gatus", data["services"])

    jinja_loader = jinja2.FileSystemLoader(searchpath="./templates")
    jinja_env = jinja2.Environment(loader=jinja_loader)
    template = jinja_env.get_template("infrastructure.d2.j2")
    text = template.render(
        grid_svcs=[db_key, auth_key],
        svcs=parse_services(data["services"]),
        hosts=parse_hosts(data["hosts"]),
        db_key=db_key,
        auth_key=auth_key,
        monitoring_key=monitoring_key,
    )
    print(text)