debianize-mobilizon/lib/mix/tasks/mobilizon/instance.ex

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# Portions of this file are derived from Pleroma:
# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social>
# SPDX-License-Identifier: AGPL-3.0-only
# Upstream: https://git.pleroma.social/pleroma/pleroma/blob/develop/lib/mix/tasks/pleroma/instance.ex
defmodule Mix.Tasks.Mobilizon.Instance do
@moduledoc """
Generates a new config
## Usage
``mix mobilizon.instance gen [OPTION...]``
If any options are left unspecified, you will be prompted interactively.
## Options
- `-f`, `--force` - overwrite any output files
- `-o PATH`, `--output PATH` - the output file for the generated configuration
- `--output-psql PATH` - the output file for the generated PostgreSQL setup
- `--domain DOMAIN` - the domain of your instance
- `--instance-name INSTANCE_NAME` - the name of your instance
- `--admin-email ADMIN_EMAIL` - the email address of the instance admin
- `--dbhost HOSTNAME` - the hostname of the PostgreSQL database to use
- `--dbname DBNAME` - the name of the database to use
- `--dbuser DBUSER` - the user (aka role) to use for the database connection
- `--dbpass DBPASS` - the password to use for the database connection
- `--dbport DBPORT` - the database port
- `--listen-port PORT` - the port the app should listen to, defaults to 4000
"""
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use Mix.Task
import Mix.Tasks.Mobilizon.Common
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@preferred_cli_env "prod"
@shortdoc "Generates a new config"
@spec run(list(binary())) :: no_return
def run(["gen" | options]) do
{options, [], []} =
OptionParser.parse(
options,
strict: [
force: :boolean,
source: :boolean,
output: :string,
output_psql: :string,
domain: :string,
instance_name: :string,
admin_email: :string,
dbhost: :string,
dbname: :string,
dbuser: :string,
dbpass: :string,
dbport: :integer,
listen_port: :string
],
aliases: [
o: :output,
f: :force,
s: :source
]
)
paths =
[config_path, psql_path] = [
Keyword.get(options, :output, "config/runtime.exs"),
Keyword.get(options, :output_psql, "setup_db.psql")
]
will_overwrite = Enum.filter(paths, &File.exists?/1)
proceed? = Enum.empty?(will_overwrite) or Keyword.get(options, :force, false)
source_install? = Keyword.get(options, :source, false)
if proceed? do
[domain, port | _] =
String.split(
get_option(
options,
:domain,
"What domain will your instance use? (e.g mobilizon.org)"
),
":"
) ++ [443]
name =
get_option(
options,
:instance_name,
"What is the name of your instance? (e.g. Mobilizon)"
)
email =
get_option(
options,
:admin_email,
"What's the address email will be send with?",
"noreply@#{domain}"
)
dbhost = get_option(options, :dbhost, "What is the hostname of your database?", "localhost")
dbname =
get_option(
options,
:dbname,
"What is the name of your database?",
"mobilizon_prod"
)
dbuser =
get_option(
options,
:dbuser,
"What is the user used to connect to your database?",
"mobilizon"
)
dbpass =
get_option(
options,
:dbpass,
"What is the password used to connect to your database?",
:crypto.strong_rand_bytes(64) |> Base.url_encode64() |> binary_part(0, 64),
"autogenerated"
)
listen_port =
get_option(
options,
:listen_port,
"What port will the app listen to (leave it if you are using the default setup with nginx)?",
4000
)
instance_secret = :crypto.strong_rand_bytes(64) |> Base.encode64() |> binary_part(0, 64)
auth_secret = :crypto.strong_rand_bytes(64) |> Base.encode64() |> binary_part(0, 64)
template_dir = Application.app_dir(:mobilizon, "priv") <> "/templates"
result_config =
EEx.eval_file(
"#{template_dir}/config.template.eex",
instance_domain: domain,
instance_port: port,
instance_email: email,
instance_name: name,
database_host: dbhost,
database_name: dbname,
database_port: Keyword.get(options, :dbport, 5432),
database_username: dbuser,
database_password: dbpass,
instance_secret: instance_secret,
auth_secret: auth_secret,
listen_port: listen_port,
release: source_install? == false
)
result_psql =
EEx.eval_file(
"#{template_dir}/setup_db.eex",
database_name: dbname,
database_username: dbuser,
database_password: dbpass
)
with :ok <- write_config(config_path, result_config),
:ok <- write_psql(psql_path, result_psql) do
shell_info(
"\n" <>
"""
To get started:
1. Check the contents of the generated files.
2. Run `sudo -u postgres psql -f #{escape_sh_path(psql_path)} && rm #{escape_sh_path(psql_path)}`.
"""
)
else
{:error, err} -> exit(err)
_ -> exit(:unknown_error)
end
else
shell_error(
"The task would have overwritten the following files:\n" <>
Enum.map_join(will_overwrite, "", &"- #{&1}\n") <>
"Rerun with `-f/--force` to overwrite them."
)
end
end
@spec write_config(String.t(), String.t()) :: :ok | {:error, atom()}
defp write_config(config_path, result_config) do
shell_info("Writing config to #{config_path}.")
with {:error, err} <- File.write(config_path, result_config) do
shell_error(
"\nERROR: Unable to write config file to #{config_path}. Make sure you have permissions on the destination and that the parent path exists.\n"
)
{:error, err}
end
end
@spec write_psql(String.t(), String.t()) :: :ok | {:error, atom()}
defp write_psql(psql_path, result_psql) do
shell_info("Writing #{psql_path}.")
with {:error, err} <- File.write(psql_path, result_psql) do
shell_error(
"\nERROR: Unable to write psql file to #{psql_path}. Make sure you have permissions on the destination and that the parent path exists.\n"
)
{:error, err}
end
end
end