Add build system

This commit adds support for generating POM files and builds of matchbot
as JAR or uberjar (standalone JAR) files.

Resolves issue #3

Signed-off-by: Sebastian Crane <seabass-labrax@gmx.com>

build.clj

@@ -0,0 +1,77 @@
+;; SPDX-License-Identifier: Apache-2.0
+;; SPDX-FileCopyrightText: 2022 Sebastian Crane <seabass-labrax@gmx.com>
+
+(ns build
+  (:require [clojure.tools.build.api :as b]
+            [tools-pom.tasks :as pom]))
+
+(def application 'org.libregaming/matchbot)
+(def version "1.1.0-SNAPSHOT")
+(def src-dirs ["src"])
+(def target-dir "target")
+(def class-dir (format "%s/%s" target-dir "classes"))
+(def basis (b/create-basis {:project "deps.edn"}))
+(def pom-file (format "%s/pom.xml" target-dir))
+(def jar-file (format "%s/%s-%s.jar" target-dir (name application) version))
+(def uber-file (format "%s/%s-%s-standalone.jar" target-dir (name application) version))
+
+(defn clean [_]
+  (b/delete {:path target-dir}))
+
+(defn uber [_]
+  (b/delete {:path class-dir})
+  (b/copy-dir {:src-dirs src-dirs
+               :target-dir class-dir})
+  (b/compile-clj {:basis basis
+                  :src-dirs src-dirs
+                  :class-dir class-dir})
+  (b/uber {:class-dir class-dir
+           :uber-file uber-file
+           :basis basis
+           :main 'system}))
+
+(defn jar [_]
+  (b/delete {:path class-dir})
+  (b/copy-dir {:src-dirs src-dirs
+               :target-dir class-dir})
+  (b/jar {:class-dir class-dir
+          :jar-file jar-file}))
+
+(defn pom [_]
+  (pom/pom
+   {:lib application
+    :version version
+    :write-pom true
+    :validate-pom true
+    :pom
+    {:description
+     "A chatbot for announcing upcoming matches and finding fellow players, written for the LibreGaming community"
+     :url
+     "https://git.libregaming.org/LibreGaming/matchbot"
+     :licenses
+     [:license
+      {:name "Apache-2.0"
+       :url "https://www.apache.org/licenses/LICENSE-2.0.html"}]
+     :developers
+     [:developer
+      {:id "seabass"
+       :name "Sebastian Crane"
+       :email "seabass-labrax@gmx.com"
+       :organization "LibreGaming"
+       :organization-url "https://libregaming.org"
+       :roles [:role "Maintainer"]
+       :timezone "Europe/London"}]
+     :scm
+     {:url "https://git.libregaming.org/LibreGaming/matchbot"
+      :connection "scm:git:https://git.libregaming.org/LibreGaming/matchbot.git"
+      :developer-connection "scm:git:ssh://git@git.libregaming.org/LibreGaming/matchbot.git"}
+     :issue-management
+     {:system "Gitea"
+      :url "https://git.libregaming.org/LibreGaming/matchbot/issues"}}})
+  (b/copy-file {:src "pom.xml" :target pom-file})
+  (b/delete {:path "pom.xml"}))
+
+(defn all [_]
+  (jar nil)
+  (uber nil)
+  (pom nil))

deps.edn

@@ -7,4 +7,7 @@
         irclj/irclj {:mvn/version "0.5.0-alpha4"}}
  :aliases {:test {:extra-paths ["test"]
                   :extra-deps {lambdaisland/kaocha {:mvn/version "1.60.972"}}
-                  :main-opts ["-m" "kaocha.runner"]}}}
+                  :main-opts ["-m" "kaocha.runner"]}
+           :build {:deps {io.github.clojure/tools.build {:git/tag "v0.8.1" :git/sha "7d40500"}
+                          com.github.pmonks/tools-pom {:mvn/version "1.0.74"}}
+                   :ns-default build}}}

src/system.clj

@@ -5,7 +5,8 @@
   (:require [irc]
             [clojure.data.json :as json]
             [clojure.set :as set]
-            [clj-yaml.core :as yaml]))
+            [clj-yaml.core :as yaml])
+  (:gen-class))
 
 (defn setify-vals [x]
   (reduce #(assoc %1