Use GitHub Actions to autoupdate to latest nightly build

.github/workflows/update.yml

@@ -0,0 +1,64 @@
+on:
+  push:
+    branches: [main]
+  schedule:
+    - cron: '0 6 * * *'
+
+jobs:
+  update-nightly:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/github-script@v5
+        with:
+          script: |
+            const fs = require("fs").promises;
+            const crypto = require("crypto");
+            const https = require("https");
+
+            const [owner, repo] = ["crystal-lang", "crystal"];
+
+            const {data: {workflow_runs}} = await github.rest.actions.listWorkflowRuns({
+                owner, repo, workflow_id: "win.yml", branch: "master", event: "push", status: "success", per_page: 1,
+            });
+            if (!workflow_runs.length) {
+                return core.error("No workflow runs found");
+            }
+            const [{id: run_id, head_sha}] = workflow_runs;
+
+            const {data: {artifacts}} = await github.rest.actions.listWorkflowRunArtifacts({
+                owner, repo, run_id,
+            });
+            const artifact = artifacts.find((x) => x.name === "crystal");
+            if (!artifact) {
+                return core.error("No 'crystal' artifact found");
+            }
+
+            const urls = [
+                `https://github.com/crystal-lang/crystal/archive/${head_sha}.zip`,
+                `https://nightly.link/crystal-lang/crystal/actions/artifacts/${artifact.id}.zip`,
+            ];
+            const hashes = await Promise.all(urls.map(hash_url));
+
+            function hash_url(url) {
+                return new Promise((resolve, reject) => {
+                    https.get(url, (response) => {
+                        const hash = crypto.createHash("sha256");
+                        response.on("error", reject);
+                        response.on("data", (chunk) => hash.update(chunk));
+                        response.on("end", () => resolve(hash.digest("hex").toUpperCase()));
+                    });
+                });
+            }
+
+            const data = JSON.parse(await fs.readFile("bucket/crystal.json", "utf8"));
+
+            data["description"] = `Crystal programming language preview @ ${head_sha.slice(0, 9)}`;
+            data["pre_install"] = [`mv $dir\\crystal-${head_sha} $dir\\crystal-lang`];
+            data["url"] = urls.concat(data["url"].slice(2));
+            data["hash"] = hashes.concat(data["hash"].slice(2));
+
+            await fs.writeFile("bucket/crystal.json", JSON.stringify(data, null, 4) + "\n", "utf8");
+
+      - run: git diff --exit-code || git -c user.email='github-actions[bot]@users.noreply.github.com' -c user.name='github-actions[bot]' commit -a -m 'Update nightly version'
+      - run: git push

bucket/crystal.json

@@ -1,12 +1,14 @@
 {
     "version": "1.2.2",
-    "description" : "Crystal programming language preview @ 90218d9",
+    "description": "Crystal programming language preview @ 90218d9fc",
     "homepage": "https://crystal-lang.org/",
     "license": {
         "identifier": "Freeware",
         "url": "https://github.com/crystal-lang/crystal/blob/master/LICENSE"
     },
-    "pre_install" : ["mv $dir\\crystal-90218d9fc0a2cd06272b659371504ad543add1f4 $dir\\crystal-lang"],
+    "pre_install": [
+        "mv $dir\\crystal-90218d9fc0a2cd06272b659371504ad543add1f4 $dir\\crystal-lang"
+    ],
     "url": [
         "https://github.com/crystal-lang/crystal/archive/90218d9fc0a2cd06272b659371504ad543add1f4.zip",
         "https://nightly.link/crystal-lang/crystal/actions/artifacts/118295502.zip",
@@ -17,8 +19,11 @@
         "B987CC1E951EBF70C6CD2D74F444118A9F9737119B8934B16AD271EBDEB777E3",
         "2F35032B2F12AE8F7E8EF37FF95F1D6404035E42631555923B7C30CDBC1653B4"
     ],
-    "depends": ["vswhere", "git"],
-    "extract_to" : [
+    "depends": [
+        "vswhere",
+        "git"
+    ],
+    "extract_to": [
         "",
         "lib",
         ""
@@ -28,8 +33,11 @@
         "LIB": "$dir\\lib",
         "CRYSTAL_PATH": "$dir;$dir\\crystal-lang\\src"
     },
-    "bin": ["crystal.ps1"],
-    "post_install": [ 
+    "bin": [
+        "crystal.ps1"
+    ],
+    "post_install": [
         "mv $dir\\lib\\crystal.exe $dir\\_crystal.exe",
-        "If (Test-Path $env:LOCALAPPDATA\\crystal\\cache) { rm -r -fo $env:LOCALAPPDATA\\crystal\\cache}"]
+        "If (Test-Path $env:LOCALAPPDATA\\crystal\\cache) { rm -r -fo $env:LOCALAPPDATA\\crystal\\cache}"
+    ]
 }