#!/usr/bin/env -S deno run

import ngx from "jsr:@char/ngx@0.2";

const DOMAIN = "my-cool-git.example";
const SOCKET = "/run/sorcery/sock";
const CACHE = "/var/cache/sorcery";
const REPOSITORIES = "/home/git/public";

const PROXY = [
  `proxy_pass http://unix:${SOCKET}`,
  "proxy_http_version 1.1",
  "proxy_set_header Host $host",
  "proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for",
  "proxy_set_header X-Forwarded-Proto $scheme",
  "client_max_body_size 64m",
];

const REPO_ROUTE = "/[^/]+/[^/]+";

export const config = ngx("server", [
  [
    ngx.serverName(DOMAIN),
    ...ngx.listen(),
    ...ngx.http3(),
    ...ngx.letsEncrypt(DOMAIN),
  ],
  "sendfile on",
  `root ${CACHE}`,
  ngx("location = /css/style.css", ["try_files $uri @sorcery"]),
  ngx("location ^~ /js/", ["try_files $uri @sorcery"]),
  ngx("location ^~ /fonts/", ["try_files $uri @sorcery"]),
  ngx(`location ~ ^${REPO_ROUTE}/$`, [
    "try_files ${uri}index.html @sorcery",
  ]),
  ngx(`location ~ ^${REPO_ROUTE}/ref/.+/$`, [
    "try_files ${uri}index.html @sorcery",
  ]),
  ngx(`location ~ ^${REPO_ROUTE}/(?:refs|ref/.+/blob/.+)$`, [
    "try_files $uri @sorcery",
    ngx("types", []),
    "default_type text/html",
  ]),
  ngx(`location ~ ^${REPO_ROUTE}/gitinfo\\.json$`, [
    "try_files $uri @sorcery",
  ]),
  ngx("location /", [...PROXY]),
  ngx("location @sorcery", [...PROXY]),
  ngx("location ~ ^/_sorcery/(.+/ref/.+/blob/.+)$", [
    "internal",
    `alias ${CACHE}/$1`,
    ngx("types", []),
    "default_type text/html",
  ]),
  ngx("location ~ ^/_sorcery/(.+/refs)$", [
    "internal",
    `alias ${CACHE}/$1`,
    ngx("types", []),
    "default_type text/html",
  ]),
  ngx("location /_sorcery/", [
    "internal",
    `alias ${CACHE}/`,
  ]),
  ngx("location /_sorcery-git/", [
    "internal",
    `alias ${REPOSITORIES}/`,
  ]),
]);

export const path = "sorcery.conf";

if (import.meta.main) console.log(config.build());