Add release script for artifact.

Artifacts.toml

@@ -2,5 +2,5 @@
 git-tree-sha1 = "a74800f299f6bdade309e459b999442f303aa64d"
 
     [[assets.download]]
-    sha256 = "7ccfd273ff2ac996059d9019ff317202bdc69aef394fe450be557df9aae81733"
+    sha256 = "aa8d3e891da5c0757620f0bad9f9cd78e2e843bbc31773b5759e4f54e4f92b2b"
     url = "https://github.com/JuliaPlots/AbstractPlotting.jl/releases/download/assets-0.1.0/assets-0.1.0.tar.gz"

artifacts.jl

@@ -1,33 +1,63 @@
 # Artifact generator for the assets directory.
+#
+# Requires:
+#
+#   - A github token stored in `ENV["GITHUB_AUTH"]` with access to `repo` read/write.
+#   - Extra packages: `ghr_jll` for release uploading.
+#
+# Usage:
+#
+#   - Update files in `/assets` directory.
+#   - Bump the `version` variable below.
+#   - Run `rebuild_artifacts()` to create new tarball and update Artifacts.toml.
+#   - Commit the changes.
+#   - Run `release_artifacts()` to create a new release and upload the new tarball.
+#
 
 using Pkg.Artifacts
-using URIs
+using ghr_jll
+using LibGit2
 
 version = v"0.1.0"
-host = "https://github.com/JuliaPlots/AbstractPlotting.jl/releases/download"
+user = "JuliaPlots"
+repo = "AbstractPlotting.jl"
+host = "https://github.com/$user/$repo/releases/download"
 
 build_path = joinpath(@__DIR__, "build")
+assets_path = joinpath(@__DIR__, "assets")
+artifact_toml = joinpath(@__DIR__, "Artifacts.toml")
+
+function rebuild_artifacts()
+    ispath(build_path) && rm(build_path, force=true, recursive=true)
+    mkpath(build_path)
+
+    product_hash = create_artifact() do artifact_dir
+        cp(assets_path, artifact_dir; force = true)
+    end
 
-ispath(build_path) && rm(build_path, force=true, recursive=true)
-mkpath(build_path)
+    archive_filename = "assets-$version.tar.gz"
+    download_hash = archive_artifact(product_hash, joinpath(build_path, archive_filename))
 
-product_hash = create_artifact() do artifact_dir
-    cp(joinpath(@__DIR__, "assets"), artifact_dir; force = true)
+    bind_artifact!(
+        artifact_toml,
+        "assets",
+        product_hash,
+        force = true,
+        download_info = Tuple[
+            (
+                "$host/assets-$version/$archive_filename",
+                download_hash,
+            ),
+        ],
+    )
 end
 
-archive_filename = "assets-$version.tar.gz"
-artifact_toml = joinpath(@__DIR__, "Artifacts.toml")
-download_hash = archive_artifact(product_hash, joinpath(build_path, archive_filename))
-
-bind_artifact!(
-    artifact_toml,
-    "assets",
-    product_hash,
-    force = true,
-    download_info = Tuple[
-        (
-            "$host/assets-$(escapeuri(string(version)))/$archive_filename",
-            download_hash,
-        ),
-    ],
-)
+function release_artifacts()
+    name = "Release assets $(version)"
+    commit = string(LibGit2.GitHash(LibGit2.GitCommit(LibGit2.GitRepo(@__DIR__), "HEAD")))
+    token = ENV["GITHUB_AUTH"]
+    tag = "assets-$version"
+    ghr() do bin
+        run(`$bin -u $user -r $repo -n $name -c $commit -t $token $tag $build_path`)
+    end
+end