(ns build
  (:require [clojure.tools.build.api :as b]))

(defn make-class-dir [target] (format "%s/classes" target))
(def basis (b/create-basis {:project "deps.edn"}))

(defonce timestamp
  (.format (java.time.LocalDateTime/now)
           java.time.format.DateTimeFormatter/BASIC_ISO_DATE))

(defonce default-target "./target")
(defonce default-srcs ["src"])

(defn make-jar-filename [target project version]
  (format "%s/%s-%s.jar"
          target (name project) version))

(defn make-uber-filename [target project version]
  (format "%s/%s-%s-standalone.jar"
          target (name project) version))

(defn clean [{:keys [target] :or {target default-target} :as params}]
  (println (format "removing build target folder \"%s\"" target))
  (b/delete {:path target})
  params)

(defn lib-jar
  [{:keys [project version target srcs]
    :or {version timestamp
         target  default-target
         srcs    default-srcs}
    :as params}]
  (let [project-sym (symbol project)
        target-jar  (make-jar-filename target project version)
        class-dir   (make-class-dir target)]
    (clean params)
    (b/copy-dir {:src-dirs srcs})
    (b/compile-clj {:basis     basis
                    :src-dirs  srcs
                    :class-dir class-dir})
    (b/write-pom {:class-dir class-dir
                  :lib       project-sym
                  :version   version
                  :basis     basis
                  :src-dirs  srcs})
    (b/jar {:class-dir class-dir
            :jar-file  target-jar})
    (println (format "jar file created at: %s" target-jar)))
  params)

(defn lib-uberjar
  [{:keys [project version target srcs]
    :or {version timestamp
         target  default-target
         srcs    default-srcs}
    :as params}]
  (let [project-sym (symbol project)
        target-uber (jar-filename target project version)
        class-dir   (make-class-dir target)]
    (clean params)
    (b/copy-dir {:src-dirs   srcs
                 :target-dir class-dir})
    (b/compile-clj {:basis     basis
                    :src-dirs  srcs
                    :class-dir class-dir})
    (b/uber {:class-dir class-dir
             :uber-file target-uber
             :basis     basis})
    (println (format "uberjar file created at: %s" target-uber)))
  params)