feat(dos-bot): :star:

26 files changed, 1567 insertions, 0 deletions

diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..6b8710a
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1 @@
+.git
diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..9d08a1a
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,9 @@
+root = true
+
+[*]
+charset = utf-8
+indent_style = space
+indent_size = 2
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..051d09d
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+eval "$(lorri direnv)"
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..dfe0770
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+# Auto detect text files and perform LF normalization
+* text=auto
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
new file mode 100644
index 0000000..c667c43
--- /dev/null
+++ b/.github/workflows/rust.yml
@@ -0,0 +1,36 @@
+name: Rust ✅
+
+on:
+  push:
+    paths:
+      - "src/**"
+      - "Config.toml"
+  pull_request:
+    paths:
+      - "src/**"
+      - "Config.toml"
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  check:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout 🛒
+        uses: actions/checkout@v2
+
+      - name: Toolchain 🧰
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: nightly-2021-06-24
+          components: rustfmt, clippy
+          override: true
+
+      - name: Check ✅
+        uses: actions-rs/cargo@v1
+        continue-on-error: false
+        with:
+          command: check
+          args: --verbose
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4a60803
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,23 @@
+# Generated by Cargo
+# will have compiled files and executables
+/target/
+
+# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
+Cargo.lock
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# IDE
+/.idea/
+/dos-bot.iml
+
+# Nix
+result*
+
+# Docker
+/dos-bot/
+
+# Development
+/.dos-bot/
diff --git a/.license_template b/.license_template
new file mode 100644
index 0000000..e8cad8b
--- /dev/null
+++ b/.license_template
@@ -0,0 +1,2 @@
+// Copyright (C) {20\d{2}(-20\d{2})?} Fuwn
+// SPDX-License-Identifier: GPL-3.0-only
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..e8f8d24
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,31 @@
+[package]
+name = "dos_bot"
+version = "0.1.0"
+authors = ["Fuwn <[email protected]>"]
+edition = "2018"
+readme = "README.rst"
+homepage = "https://github.com/fuwn/dos-bot"
+repository = "https://github.com/fuwn/dos-bot"
+license = "GPL-3.0-only"
+keywords = ["rust", "assembly", "discord"]
+publish = false
+
+[dependencies]
+# Discord
+serenity = { version = "0.10.8", features = ["cache", "framework", "standard_framework", "rustls_backend"] }
+
+# Utility
+dotenv = "0.15.0"
+tokio = { version = "1.7.1", features = ["macros", "signal", "rt-multi-thread"] }
+config = "0.11.0"
+
+# Serialization
+serde = "1.0.126"
+serde_derive = "1.0.126"
+
+# Database
+redis = "0.20.2"
+
+# Logging
+log = "0.4.14"
+pretty_env_logger = "0.4.0"
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..f288702
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
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+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
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+price.  Our General Public Licenses are designed to make sure that you
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+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/Makefile.toml b/Makefile.toml
new file mode 100644
index 0000000..969cb3b
--- /dev/null
+++ b/Makefile.toml
@@ -0,0 +1,79 @@
+# ------------
+# | Wrappers |
+# ------------
+[tasks.fmt]
+command = "cargo"
+args = ["fmt"]
+private = true
+
+[tasks.check]
+command = "cargo"
+args = ["check"]
+private = true
+
+[tasks.clippy]
+command = "cargo"
+args = ["clippy"]
+private = true
+
+# -------------
+# | Executors |
+# -------------
+[tasks.checkf]
+dependencies = ["fmt", "check"]
+
+[tasks.checkfc]
+dependencies = ["fmt", "check", "clippy"]
+
+[tasks.run]
+dependencies = ["checkf"]
+command = "cargo"
+args = ["run"]
+
+[tasks.runw]
+dependencies = ["checkf"]
+command = "cargo"
+args = ["run"]
+watch = true
+
+[tasks.docker-build]
+workspace = false
+command = "nix-build"
+args = ["docker.nix"]
+
+[tasks.docker-load]
+workspace = false
+script_runner = "@shell"
+script = '''
+docker load < result
+'''
+
+[tasks.docker-run]
+deprecated = true
+command = "docker"
+args = [
+  "run",
+  "--name", "DosBot",
+  "-v", "/var/lib/dos-bot:/.dos-bot",
+  "fuwn/dos-bot"
+]
+
+[tasks.docker-run-i]
+deprecated = true
+command = "docker"
+args = [
+  "run",
+  "-it",
+  "--name", "DosBot",
+  "-v", "/var/lib/dos-bot:/.dos-bot",
+  "fuwn/dos-bot"
+]
+
+# Build 'n' load
+[tasks.bnl]
+dependencies = ["docker-build", "docker-load"]
+
+[tasks.gen-docs]
+toolchain = "nightly"
+command = "cargo"
+args = ["doc", "--open", "--document-private-items", "--no-deps"]
diff --git a/README.rst b/README.rst
new file mode 100644
index 0000000..bddb16f
--- /dev/null
+++ b/README.rst
@@ -0,0 +1,66 @@
+.. raw:: html
+
+  <h1 align="center"><code>dos-bot</code></h1>
+
+  <p align="center">
+
+.. image:: https://img.shields.io/discord/854071194453671976
+  :alt: Discord
+  :target: https://discord.io/assembly
+
+.. image:: https://img.shields.io/badge/Say%20Thanks-!-1EAEDB.svg
+  :alt: Say Thanks
+  :target: https://saythanks.io/to/[email protected]
+
+.. image:: https://img.shields.io/github/license/fuwn/dos-bot
+  :alt: License
+  :target: ./LICENSE
+
+.. raw:: html
+
+  </p>
+
+Usage
+-----
+
+Docker
+~~~~~~
+
+.. code-block:: shell
+
+  $ docker run --name DosBot -v /var/lib/dos-bot:/.dos-bot fuwn/dos-bot
+
+Docker Compose
+~~~~~~~~~~~~~~
+
+.. code-block:: shell
+
+  $ docker-compose up -d
+
+Invite
+~~~~~~
+
+https://discord.com/api/oauth2/authorize?client_id=857695800677892106&permissions=8&scope=bot
+
+Development Dependencies
+------------------------
+
+Required
+~~~~~~~~
+
+- `Rust <https://www.rust-lang.org/>`_ — The backbone of it all.
+- `cargo-make <https://github.com/sagiegurari/cargo-make>`_ — Cross-platform
+  `make <https://www.gnu.org/software/make/>`_ substitute
+
+Optional
+~~~~~~~~
+
+- `cargo-watch <https://crates.io/crates/cargo-watch>`_ — Recompilation on file-system changes
+
+*These development dependencies (excluding sqlfluff) will automatically be satisfied if you are
+using the Nix shell configuration as provided.*
+
+License
+~~~~~~~
+
+`GNU General Public License v3.0 <./LICENSE>`_
diff --git a/config.example.json b/config.example.json
new file mode 100644
index 0000000..03eef89
--- /dev/null
+++ b/config.example.json
@@ -0,0 +1,10 @@
+{
+  "token": "",
+  "roles": [
+    {
+      "guild_id": 0,
+      "message": 0,
+      "role": 0
+    }
+  ]
+}
diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..f952bff
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,46 @@
+{ sources ? import ./nix/sources.nix, pkgs ? import sources.nixpkgs { } }:
+with pkgs;
+
+let
+  rust = pkgs.callPackage ./nix/rust.nix { };
+
+  srcNoTarget = dir:
+    builtins.filterSource
+      (path: type: type != "directory" || builtins.baseNameOf path != "target")
+      dir;
+
+  naersk = pkgs.callPackage sources.naersk {
+    rustc = rust;
+    cargo = rust;
+  };
+  dhallpkgs = import sources.easy-dhall-nix { inherit pkgs; };
+  src = srcNoTarget ./.;
+
+  dos-bot = naersk.buildPackage {
+    inherit src;
+    doCheck = true;
+    buildInputs = [ pkg-config openssl git ];
+    remapPathPrefix = true;
+  };
+
+  config = stdenv.mkDerivation {
+    pname = "dos_bot-config";
+    version = "HEAD";
+    buildInputs = [ dhallpkgs.dhall-simple ];
+
+#    phases = "installPhase";
+#
+#    installPhase = ''
+#    '';
+  };
+
+in pkgs.stdenv.mkDerivation {
+  inherit (dos-bot) name;
+  inherit src;
+  phases = "installPhase";
+
+  installPhase = ''
+    mkdir -p $out $out/bin
+    cp -rf ${dos-bot}/bin/dos_bot $out/bin/dos_bot
+  '';
+}
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..6d346e3
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,6 @@
+version: "3.3"
+services:
+  dos-bot:
+    volumes:
+      - ./.dos-bot:/.dos-bot
+    image: fuwn/dos-bot
diff --git a/docker.nix b/docker.nix
new file mode 100644
index 0000000..662e415
--- /dev/null
+++ b/docker.nix
@@ -0,0 +1,38 @@
+{ system ? builtins.currentSystem }:
+
+let
+  sources = import ./nix/sources.nix;
+  pkgs = import sources.nixpkgs { };
+  callPackage = pkgs.lib.callPackageWith pkgs;
+  dos-bot = callPackage ./default.nix { };
+
+  dockerImage = pkg:
+    pkgs.dockerTools.buildImage {
+      name = "fuwn/dos-bot";
+      tag = "latest";
+      created = "now";
+
+      fromImage = pkgs.dockerTools.pullImage {
+        imageName = "alpine";
+        imageDigest = "sha256:def822f9851ca422481ec6fee59a9966f12b351c62ccb9aca841526ffaa9f748";
+        # https://nixos.wiki/wiki/Docker
+        #
+        # The above article didn't even work for me, ROFL.
+        # `nix-build docker.nix` threw an error about the sha256 being
+        # incorrect, but it also spat our the expected sha256...
+        #
+        # so I just replaced it...
+        sha256 = "1z6fh6ry14m5cpcjfg88vn2m36garmgdagr4vfc3pm1z3kph639n";
+        finalImageTag = "alpine";
+        finalImageName = "3.13.5";
+      };
+
+      contents = [ pkg ];
+
+      config = {
+        WorkingDir = "/";
+        EntryPoint = [ "/bin/dos_bot" ];
+      };
+    };
+
+in dockerImage dos-bot
diff --git a/nix/dhall-yaml.nix b/nix/dhall-yaml.nix
new file mode 100644
index 0000000..ddb8c3d
--- /dev/null
+++ b/nix/dhall-yaml.nix
@@ -0,0 +1,5 @@
+let
+  sources = import ./sources.nix;
+  pkgs = import sources.nixpkgs { };
+  dhall = import sources.easy-dhall-nix { inherit pkgs; };
+in dhall.dhall-yaml-simple
diff --git a/nix/rust.nix b/nix/rust.nix
new file mode 100644
index 0000000..2f586f3
--- /dev/null
+++ b/nix/rust.nix
@@ -0,0 +1,9 @@
+{ sources ? import ./sources.nix }:
+
+let
+  pkgs = import sources.nixpkgs { overlays = [ (import sources.nixpkgs-mozilla) ]; };
+  channel = "nightly";
+  date = "2021-06-24";
+  targets = [ ];
+  chan = pkgs.rustChannelOfTargets channel date targets;
+in chan
diff --git a/nix/sources.json b/nix/sources.json
new file mode 100644
index 0000000..bc72418
--- /dev/null
+++ b/nix/sources.json
@@ -0,0 +1,62 @@
+{
+    "easy-dhall-nix": {
+        "branch": "master",
+        "description": "Derivations for easily downloading Dhall binaries and putting them to use.",
+        "homepage": "",
+        "owner": "justinwoo",
+        "repo": "easy-dhall-nix",
+        "rev": "1f6eecab5c276a59858a10bbfcbbc5611187da03",
+        "sha256": "07n7y93xfiwr82yx2v8r5mxcafsxgs1hdl1ghq6xah5v827fb6q0",
+        "type": "tarball",
+        "url": "https://github.com/justinwoo/easy-dhall-nix/archive/1f6eecab5c276a59858a10bbfcbbc5611187da03.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    },
+    "naersk": {
+        "branch": "master",
+        "description": "Build rust crates in Nix. No configuration, no code generation, no IFD. Sandbox friendly.",
+        "homepage": "",
+        "owner": "nmattia",
+        "repo": "naersk",
+        "rev": "a3f40fe42cc6d267ff7518fa3199e99ff1444ac4",
+        "sha256": "1nf7fn8anghwf6p5p58ywbcwdkjxq112qv663rn52jq9k95iakdi",
+        "type": "tarball",
+        "url": "https://github.com/nmattia/naersk/archive/a3f40fe42cc6d267ff7518fa3199e99ff1444ac4.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    },
+    "niv": {
+        "branch": "master",
+        "description": "Easy dependency management for Nix projects",
+        "homepage": "https://github.com/nmattia/niv",
+        "owner": "nmattia",
+        "repo": "niv",
+        "rev": "94080ae8286024820c570a2a24ed7c36d7ad04a9",
+        "sha256": "0wlk52zwlrq727x3z1vg9d9qq4zw62ab5jzg4068iqb6hyb0cr0w",
+        "type": "tarball",
+        "url": "https://github.com/nmattia/niv/archive/94080ae8286024820c570a2a24ed7c36d7ad04a9.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    },
+    "nixpkgs": {
+        "branch": "release-20.03",
+        "description": "Nix Packages collection",
+        "homepage": "",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "1db42b7fe3878f3f5f7a4f2dc210772fd080e205",
+        "sha256": "05k9y9ki6jhaqdhycnidnk5zrdzsdammbk5lsmsbz249hjhhgcgh",
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/1db42b7fe3878f3f5f7a4f2dc210772fd080e205.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    },
+    "nixpkgs-mozilla": {
+        "branch": "master",
+        "description": "mozilla related nixpkgs (extends nixos/nixpkgs repo)",
+        "homepage": "",
+        "owner": "mozilla",
+        "repo": "nixpkgs-mozilla",
+        "rev": "8c007b60731c07dd7a052cce508de3bb1ae849b4",
+        "sha256": "1zybp62zz0h077zm2zmqs2wcg3whg6jqaah9hcl1gv4x8af4zhs6",
+        "type": "tarball",
+        "url": "https://github.com/mozilla/nixpkgs-mozilla/archive/8c007b60731c07dd7a052cce508de3bb1ae849b4.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    }
+}
diff --git a/nix/sources.nix b/nix/sources.nix
new file mode 100644
index 0000000..1938409
--- /dev/null
+++ b/nix/sources.nix
@@ -0,0 +1,174 @@
+# This file has been generated by Niv.
+
+let
+
+  #
+  # The fetchers. fetch_<type> fetches specs of type <type>.
+  #
+
+  fetch_file = pkgs: name: spec:
+    let
+      name' = sanitizeName name + "-src";
+    in
+      if spec.builtin or true then
+        builtins_fetchurl { inherit (spec) url sha256; name = name'; }
+      else
+        pkgs.fetchurl { inherit (spec) url sha256; name = name'; };
+
+  fetch_tarball = pkgs: name: spec:
+    let
+      name' = sanitizeName name + "-src";
+    in
+      if spec.builtin or true then
+        builtins_fetchTarball { name = name'; inherit (spec) url sha256; }
+      else
+        pkgs.fetchzip { name = name'; inherit (spec) url sha256; };
+
+  fetch_git = name: spec:
+    let
+      ref =
+        if spec ? ref then spec.ref else
+          if spec ? branch then "refs/heads/${spec.branch}" else
+            if spec ? tag then "refs/tags/${spec.tag}" else
+              abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!";
+    in
+      builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; };
+
+  fetch_local = spec: spec.path;
+
+  fetch_builtin-tarball = name: throw
+    ''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
+        $ niv modify ${name} -a type=tarball -a builtin=true'';
+
+  fetch_builtin-url = name: throw
+    ''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.
+        $ niv modify ${name} -a type=file -a builtin=true'';
+
+  #
+  # Various helpers
+  #
+
+  # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695
+  sanitizeName = name:
+    (
+      concatMapStrings (s: if builtins.isList s then "-" else s)
+        (
+          builtins.split "[^[:alnum:]+._?=-]+"
+            ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)
+        )
+    );
+
+  # The set of packages used when specs are fetched using non-builtins.
+  mkPkgs = sources: system:
+    let
+      sourcesNixpkgs =
+        import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; };
+      hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
+      hasThisAsNixpkgsPath = <nixpkgs> == ./.;
+    in
+      if builtins.hasAttr "nixpkgs" sources
+      then sourcesNixpkgs
+      else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then
+        import <nixpkgs> {}
+      else
+        abort
+          ''
+            Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
+            add a package called "nixpkgs" to your sources.json.
+          '';
+
+  # The actual fetching function.
+  fetch = pkgs: name: spec:
+
+    if ! builtins.hasAttr "type" spec then
+      abort "ERROR: niv spec ${name} does not have a 'type' attribute"
+    else if spec.type == "file" then fetch_file pkgs name spec
+    else if spec.type == "tarball" then fetch_tarball pkgs name spec
+    else if spec.type == "git" then fetch_git name spec
+    else if spec.type == "local" then fetch_local spec
+    else if spec.type == "builtin-tarball" then fetch_builtin-tarball name
+    else if spec.type == "builtin-url" then fetch_builtin-url name
+    else
+      abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
+
+  # If the environment variable NIV_OVERRIDE_${name} is set, then use
+  # the path directly as opposed to the fetched source.
+  replace = name: drv:
+    let
+      saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name;
+      ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";
+    in
+      if ersatz == "" then drv else
+        # this turns the string into an actual Nix path (for both absolute and
+        # relative paths)
+        if builtins.substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins.getEnv "PWD" + "/${ersatz}";
+
+  # Ports of functions for older nix versions
+
+  # a Nix version of mapAttrs if the built-in doesn't exist
+  mapAttrs = builtins.mapAttrs or (
+    f: set: with builtins;
+    listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
+  );
+
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295
+  range = first: last: if first > last then [] else builtins.genList (n: first + n) (last - first + 1);
+
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257
+  stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1));
+
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
+  stringAsChars = f: s: concatStrings (map f (stringToCharacters s));
+  concatMapStrings = f: list: concatStrings (map f list);
+  concatStrings = builtins.concatStringsSep "";
+
+  # https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331
+  optionalAttrs = cond: as: if cond then as else {};
+
+  # fetchTarball version that is compatible between all the versions of Nix
+  builtins_fetchTarball = { url, name ? null, sha256 }@attrs:
+    let
+      inherit (builtins) lessThan nixVersion fetchTarball;
+    in
+      if lessThan nixVersion "1.12" then
+        fetchTarball ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
+      else
+        fetchTarball attrs;
+
+  # fetchurl version that is compatible between all the versions of Nix
+  builtins_fetchurl = { url, name ? null, sha256 }@attrs:
+    let
+      inherit (builtins) lessThan nixVersion fetchurl;
+    in
+      if lessThan nixVersion "1.12" then
+        fetchurl ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
+      else
+        fetchurl attrs;
+
+  # Create the final "sources" from the config
+  mkSources = config:
+    mapAttrs (
+      name: spec:
+        if builtins.hasAttr "outPath" spec
+        then abort
+          "The values in sources.json should not have an 'outPath' attribute"
+        else
+          spec // { outPath = replace name (fetch config.pkgs name spec); }
+    ) config.sources;
+
+  # The "config" used by the fetchers
+  mkConfig =
+    { sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null
+    , sources ? if isNull sourcesFile then {} else builtins.fromJSON (builtins.readFile sourcesFile)
+    , system ? builtins.currentSystem
+    , pkgs ? mkPkgs sources system
+    }: rec {
+      # The sources, i.e. the attribute set of spec name to spec
+      inherit sources;
+
+      # The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
+      inherit pkgs;
+    };
+
+in
+mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); }
diff --git a/renovate.json b/renovate.json
new file mode 100644
index 0000000..f45d8f1
--- /dev/null
+++ b/renovate.json
@@ -0,0 +1,5 @@
+{
+  "extends": [
+    "config:base"
+  ]
+}
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..7dc7f83
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,2 @@
+[toolchain]
+channel = "nightly-2021-06-24"
diff --git a/rustfmt.toml b/rustfmt.toml
new file mode 100644
index 0000000..6a5c54c
--- /dev/null
+++ b/rustfmt.toml
@@ -0,0 +1,29 @@
+condense_wildcard_suffixes = true
+edition = "2018"
+enum_discrim_align_threshold = 20
+error_on_line_overflow = true
+error_on_unformatted = true
+fn_single_line = true
+force_multiline_blocks = true
+format_code_in_doc_comments = true
+format_macro_matchers = true
+format_strings = true
+imports_layout = "HorizontalVertical"
+license_template_path = ".license_template"
+match_arm_blocks = false
+imports_granularity = "Crate"
+newline_style = "Unix"
+normalize_comments = true
+normalize_doc_attributes = true
+reorder_impl_items = true
+group_imports = "StdExternalCrate"
+reorder_modules = true
+report_fixme = "Always"
+#report_todo = "Always"
+struct_field_align_threshold = 20
+struct_lit_single_line = false
+tab_spaces = 2
+use_field_init_shorthand = true
+use_try_shorthand = true
+where_single_line = true
+wrap_comments = true
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..1fec263
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,29 @@
+let
+  sources = import ./nix/sources.nix;
+  pkgs = import sources.nixpkgs { overlays = [ (import sources.nixpkgs-mozilla) ]; };
+  dhallpkgs = import sources.easy-dhall-nix { inherit pkgs; };
+  dhall-yaml = dhallpkgs.dhall-yaml-simple;
+  dhall = dhallpkgs.dhall-simple;
+  rust = pkgs.callPackage ./nix/rust.nix { };
+in pkgs.mkShell {
+  buildInputs = with pkgs; [
+    # Rust
+    rust
+    cargo-make
+    cargo-watch
+    cargo-udeps
+
+    # System
+    openssl
+    pkg-config
+
+    # Dhall
+    dhall
+    dhall-yaml
+
+    # Dependecy manager
+    niv
+  ];
+
+  RUST_SRC_PATH = "${pkgs.latest.rustChannels.nightly.rust-src}/lib/rustlib/src/rust/library";
+}
diff --git a/src/commands.rs b/src/commands.rs
new file mode 100644
index 0000000..086b6c3
--- /dev/null
+++ b/src/commands.rs
@@ -0,0 +1,40 @@
+// Copyright (C) 2021-2021 Fuwn
+// SPDX-License-Identifier: GPL-3.0-only
+
+use serenity::{
+  framework::standard::{macros::command, CommandResult},
+  model::prelude::*,
+  prelude::*,
+};
+
+#[command]
+pub async fn ping(ctx: &Context, msg: &Message) -> CommandResult {
+  msg.channel_id.say(&ctx.http, "Pong!").await?;
+
+  Ok(())
+}
+
+#[command]
+pub async fn help(ctx: &Context, msg: &Message) -> CommandResult {
+  msg
+    .channel_id
+    .say(
+      &ctx.http,
+      r#"```
+  commands
+  ========
+
+help - you are here
+ping - pong!
+
+  information
+  ===========
+
+- https://github.com/fuwn/dos-bot
+- https://discord.io/assembly
+```"#,
+    )
+    .await?;
+
+  Ok(())
+}
diff --git a/src/config.rs b/src/config.rs
new file mode 100644
index 0000000..afdba2d
--- /dev/null
+++ b/src/config.rs
@@ -0,0 +1,32 @@
+// Copyright (C) 2021-2021 Fuwn
+// SPDX-License-Identifier: GPL-3.0-only
+
+use config::ConfigError;
+use serde_derive::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct RolesRole {
+  pub message: u64,
+  pub role:    u64,
+}
+#[derive(Serialize, Deserialize, Debug)]
+pub struct Config {
+  pub token: String,
+  pub roles: Vec<RolesRole>,
+}
+impl Config {
+  #[allow(future_prelude_collision)]
+  fn new() -> Result<Self, ConfigError> {
+    let mut c = config::Config::default();
+
+    c.merge(config::File::with_name(".dos-bot/config.json"))
+      .expect("unable to access configuration file");
+
+    c.try_into()
+  }
+
+  /// # Panics
+  /// if the configuration file is unable to be accessed.
+  #[must_use]
+  pub fn get() -> Self { Self::new().unwrap() }
+}
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..333f9f9
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,156 @@
+// Copyright (C) 2021-2021 Fuwn
+// SPDX-License-Identifier: GPL-3.0-only
+
+#![feature(
+  type_ascription,
+  hash_set_entry,
+  type_name_of_val,
+  decl_macro,
+  proc_macro_hygiene
+)]
+#![deny(
+  warnings,
+  nonstandard_style,
+  unused,
+  future_incompatible,
+  rust_2018_idioms,
+  unsafe_code
+)]
+#![deny(clippy::all, clippy::nursery, clippy::pedantic)]
+#![recursion_limit = "128"]
+#![doc(
+  html_logo_url = "https://cdn.discordapp.com/icons/854071194453671976/bc8c80e4bcfa66ecd55da8ceaa80\
+  f5a8.webp?size=128",
+  html_favicon_url = "https://cdn.discordapp.com/icons/854071194453671976/bc8c80e4bcfa66ecd55da8cea\
+  a80f5a8.webp?size=128"
+)]
+
+pub mod commands;
+pub mod config;
+
+#[macro_use]
+extern crate log;
+
+use std::{collections::HashSet, sync::Arc};
+
+#[allow(clippy::wildcard_imports)]
+use commands::*;
+use serenity::{
+  async_trait,
+  client::bridge::gateway::{GatewayIntents, ShardManager},
+  framework::{standard::macros::group, StandardFramework},
+  http::Http,
+  model::{
+    channel::Reaction,
+    gateway::{Activity, Ready},
+  },
+  prelude::*,
+};
+
+use crate::config::Config;
+
+pub struct ShardManagerContainer;
+impl TypeMapKey for ShardManagerContainer {
+  type Value = Arc<Mutex<ShardManager>>;
+}
+
+struct Handler;
+#[async_trait]
+impl EventHandler for Handler {
+  async fn reaction_add(&self, ctx: Context, reaction: Reaction) {
+    if let Some(guild) = reaction.guild_id {
+      if let Some(c) = config::Config::get()
+        .roles
+        .iter()
+        .find(|x| x.message == reaction.message_id.0)
+      {
+        guild
+          .member(&ctx, reaction.user_id.expect("unable to locate user id"))
+          .await
+          .expect("unable to locate member")
+          .add_role(&ctx, c.role)
+          .await
+          .expect("unable to add role to member");
+      }
+    }
+  }
+
+  async fn reaction_remove(&self, ctx: Context, reaction: Reaction) {
+    if let Some(guild) = reaction.guild_id {
+      if let Some(c) = config::Config::get()
+        .roles
+        .iter()
+        .find(|x| x.message == reaction.message_id.0)
+      {
+        guild
+          .member(&ctx, reaction.user_id.expect("unable to locate user id"))
+          .await
+          .expect("unable to locate member")
+          .remove_role(&ctx, c.role)
+          .await
+          .expect("unable to add role to member");
+      }
+    }
+  }
+
+  async fn ready(&self, ctx: Context, ready: Ready) {
+    info!("connected to discord gateway as {}", ready.user.name);
+
+    ctx
+      .set_activity(Activity::watching(">help - discord.io/assembly"))
+      .await;
+  }
+}
+
+#[group]
+#[commands(ping, help)]
+struct General;
+
+#[tokio::main]
+async fn main() {
+  dotenv::dotenv().ok();
+
+  std::env::set_var("RUST_LOG", "dos_bot=info");
+  pretty_env_logger::init();
+
+  let http = Http::new_with_token(Config::get().token.as_str());
+
+  let (owners, _bot_id) = match http.get_current_application_info().await {
+    Ok(info) => {
+      let mut owners = HashSet::new();
+      owners.insert(info.owner.id);
+
+      (owners, info.id)
+    }
+    Err(why) => panic!("could not access application info: {:?}", why),
+  };
+
+  let framework = StandardFramework::new()
+    .configure(|c| c.owners(owners).prefix(">"))
+    .group(&GENERAL_GROUP);
+
+  let mut client = Client::builder(Config::get().token.as_str())
+    .framework(framework)
+    .event_handler(Handler)
+    .intents(GatewayIntents::all())
+    .await
+    .expect("error creating dos-bot");
+
+  {
+    let mut data = client.data.write().await;
+    data.insert::<ShardManagerContainer>(client.shard_manager.clone());
+  }
+
+  let shard_manager = client.shard_manager.clone();
+
+  tokio::spawn(async move {
+    tokio::signal::ctrl_c()
+      .await
+      .expect("could not register ctrl+c handler");
+    shard_manager.lock().await.shutdown_all().await;
+  });
+
+  if let Err(why) = client.start().await {
+    error!("client error: {:?}", why);
+  }
+}