import { copyFile } from "node:fs/promises";
import { Alpine } from "../../alpine.js";
import { Runit } from "../../runit/index.js";
import { buildLoki } from "./build.js";

export async function setupLoki(alpine: Alpine, runit: Runit): Promise<void> {
  const bin = await buildLoki();
  await copyFile(bin, alpine.path("/usr/local/bin/loki"));

  const user = await alpine.userAdd("loki");

  // TODO: data
  // await alpine.fstab.addTmpfs("/var/lib/grafana", {
  //   uid: user.uid,
  //   gid: user.gid,
  //   mode: "700",
  // });
  const configPath = "/etc/loki/loki-local-config.yaml";
  await alpine.writeFile(
    configPath,
    `
auth_enabled: false

server:
  http_listen_port: 3100
  http_listen_address: 127.0.0.1
  # grpc_listen_port: 9096
  grpc_listen_address: 127.0.0.1

common:
  instance_addr: 127.0.0.1
  path_prefix: /tmp/loki
  storage:
    filesystem:
      chunks_directory: /tmp/loki/chunks
      rules_directory: /tmp/loki/rules
  replication_factor: 1
  ring:
    kvstore:
      store: inmemory

query_range:
  results_cache:
    cache:
      embedded_cache:
        enabled: true
        max_size_mb: 100

schema_config:
  configs:
    - from: 2020-10-24
      store: boltdb-shipper
      object_store: filesystem
      schema: v11
      index:
        prefix: index_
        period: 24h

# ruler:
#   alertmanager_url: http://localhost:9093

analytics:
  reporting_enabled: false`,
    user
  );

  //   await alpine.sudoWriteExecutable(
  //     "/usr/local/sbin/nulo-grafana-cli",
  //     `#!/bin/sh
  // cd /
  // exec chpst -u grafana:grafana grafana-cli --homepath /usr/share/grafana --config /etc/grafana.ini "$@"`
  //   );

  await runit.addService(
    "loki",
    `#!/bin/sh
exec chpst -u ${user.name}:${user.name} /usr/local/bin/loki -config.file='${configPath}'
`
  );
}