build: add SVR.JS installation script

package-lock.json

@@ -7,6 +7,7 @@
     "": {
       "name": "svrjs-mod-starter",
       "version": "0.0.0",
+      "hasInstallScript": true,
       "devDependencies": {
         "@eslint/js": "^9.9.1",
         "esbuild": "^0.23.1",
@@ -16,7 +17,8 @@
         "eslint-plugin-prettier": "^5.2.1",
         "globals": "^15.9.0",
         "jest": "^29.7.0",
-        "prettier": "^3.3.3"
+        "prettier": "^3.3.3",
+        "zip": "^1.2.0"
       }
     },
     "node_modules/@ampproject/remapping": {
@@ -2085,6 +2087,25 @@
       "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
       "dev": true
     },
+    "node_modules/base64-js": {
+      "version": "0.0.2",
+      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-0.0.2.tgz",
+      "integrity": "sha512-Pj9L87dCdGcKlSqPVUjD+q96pbIx1zQQLb2CUiWURfjiBELv84YX+0nGnKmyT/9KkC7PQk7UN1w+Al8bBozaxQ==",
+      "dev": true,
+      "engines": {
+        "node": ">= 0.4"
+      }
+    },
+    "node_modules/bops": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/bops/-/bops-0.1.1.tgz",
+      "integrity": "sha512-Cx1zStcMp+YoFan8OgudNPMih82eJZE+27feki1WeyoFTR9Ye7AR1SUW3saE6QQvdS/g52aJ2IojBjWOiRiLbw==",
+      "dev": true,
+      "dependencies": {
+        "base64-js": "0.0.2",
+        "to-utf8": "0.0.1"
+      }
+    },
     "node_modules/brace-expansion": {
       "version": "1.1.11",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
@@ -4809,6 +4830,12 @@
         "node": ">=8.0"
       }
     },
+    "node_modules/to-utf8": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/to-utf8/-/to-utf8-0.0.1.tgz",
+      "integrity": "sha512-zks18/TWT1iHO3v0vFp5qLKOG27m67ycq/Y7a7cTiRuUNlc4gf3HGnkRgMv0NyhnfTamtkYBJl+YeD1/j07gBQ==",
+      "dev": true
+    },
     "node_modules/ts-api-utils": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/ts-api-utils/-/ts-api-utils-1.3.0.tgz",
@@ -5055,6 +5082,15 @@
       "funding": {
         "url": "https://github.com/sponsors/sindresorhus"
       }
+    },
+    "node_modules/zip": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/zip/-/zip-1.2.0.tgz",
+      "integrity": "sha512-8B4Z9BXJKkI8BkHhKvQan4rwCzUENnj95YHFYrI7F1NbqKCIdW86kujctzEB+kJ6XapHPiAhiZ9xi5GbW5SPdw==",
+      "dev": true,
+      "dependencies": {
+        "bops": "~0.1.1"
+      }
     }
   }
 }

package.json

@@ -6,6 +6,7 @@
     "build": "node esbuild.config.js",
     "lint": "eslint --no-error-on-unmatched-pattern src/**/*.js src/*.js tests/**/*.test.js tests/**/*.js",
     "lint:fix": "npm run lint -- --fix",
+    "postinstall": "node svrjs.install.js",
     "test": "jest"
   },
   "devDependencies": {
@@ -17,6 +18,7 @@
     "eslint-plugin-prettier": "^5.2.1",
     "globals": "^15.9.0",
     "jest": "^29.7.0",
-    "prettier": "^3.3.3"
+    "prettier": "^3.3.3",
+    "zip": "^1.2.0"
   }
 }

svrjs.install.js

@@ -0,0 +1,126 @@
+// Code in the SVR.JS installation script is derived from the "create-svrjs-server" command.
+
+const fs = require("fs");
+const https = require("https");
+const zip = require("zip");
+const zlib = require("zlib");
+
+function downloadSVRJS(version) {
+  const normalizedVersion = version.toLowerCase().replace(/[^0-9a-z]+/g, ".");
+  let path = "/svr.js." + normalizedVersion + ".zip";
+  if (normalizedVersion.indexOf("beta") != -1)
+    path = "/beta/svr.js." + normalizedVersion + ".zip";
+  if (normalizedVersion.indexOf("nightly") != -1)
+    path = "/nightly/svr.js." + normalizedVersion + ".zip";
+  https
+    .get(
+      {
+        hostname: "downloads.svrjs.org",
+        port: 443,
+        path: path,
+        method: "GET"
+      },
+      (res) => {
+        let zipData = "";
+        if (res.statusCode != 200) {
+          console.log(
+            "Server returned the " +
+              res.statusCode +
+              " HTTP status code while trying to download SVR.JS " +
+              version
+          );
+          process.exit(1);
+        }
+
+        res.on("data", (chunk) => {
+          zipData += chunk.toString("latin1");
+        });
+
+        res.on("end", function () {
+          console.log("Downloaded the .zip file");
+          zipData = Buffer.from(zipData, "latin1");
+          const reader = zip.Reader(zipData);
+          const allFiles = reader.toObject();
+          Object.keys(allFiles).forEach((filename) => {
+            var paths = filename.split("/");
+            if (
+              filename.match(
+                /^(?:[^/.]+\.compressed|(?:log(?:viewer|highlight)|svr(?:passwd|_new)?)\.js|node_modules(?:\/|$))/
+              )
+            ) {
+              for (var j = 0; j < paths.length - 1; j++) {
+                const dirname = JSON.parse(JSON.stringify(paths))
+                  .splice(0, j + 1)
+                  .join("/");
+                if (!fs.existsSync(__dirname + "/svrjs/" + dirname)) {
+                  fs.mkdirSync(__dirname + "/svrjs/" + dirname);
+                }
+              }
+              fs.writeFileSync(
+                __dirname + "/svrjs/" + filename,
+                allFiles[filename]
+              );
+            }
+          });
+          fs.mkdirSync(__dirname + "/svrjs/mods");
+          console.log("Deleting SVR.JS stub...");
+          fs.unlinkSync(__dirname + "/svrjs/svr.js");
+          // Modules aren't extracted in SVR.JS's 4.x stub, so no module extraction code here.
+          console.log("Decompressing SVR.JS...");
+          const script = zlib.gunzipSync(
+            fs.readFileSync(__dirname + "/svrjs/svr.compressed")
+          );
+          fs.unlinkSync(__dirname + "/svrjs/svr.compressed");
+          fs.writeFileSync(__dirname + "/svrjs/svr.js", script);
+          console.log("SVR.JS is installed successfully.");
+        });
+      }
+    )
+    .on("error", function () {
+      console.log("Can't connect to the SVR.JS download server!");
+      process.exit(1);
+    });
+}
+
+if (fs.existsSync(__dirname + "/svrjs")) {
+  console.log("SVR.JS is already installed.");
+} else {
+  fs.mkdirSync(__dirname + "/svrjs");
+  https
+    .get(
+      {
+        hostname: "downloads.svrjs.org",
+        port: 443,
+        path: "/latest.svrjs",
+        method: "GET"
+      },
+      (res) => {
+        if (res.statusCode != 200) {
+          console.log(
+            "Server returned the " + res.statusCode + " HTTP status code"
+          );
+          process.exit(1);
+        }
+        let data = "";
+        res.on("data", (chunk) => {
+          data += chunk;
+        });
+        res.on("end", () => {
+          const selectedVersion = data.trim();
+          if (!selectedVersion) {
+            console.log(
+              "Can't obtain the latest version from downloads server"
+            );
+            process.exit(1);
+          } else {
+            console.log("Selected SVR.JS " + selectedVersion);
+            downloadSVRJS(selectedVersion);
+          }
+        });
+      }
+    )
+    .on("error", function () {
+      console.log("Can't connect to the SVR.JS download server!");
+      process.exit(1);
+    });
+}