wip: implementing install script

extra/install.batsh

@@ -0,0 +1,69 @@
+println("=====================");
+println("Uptime Kuma Installer");
+println("=====================");
+println("");
+println("---------------------------------------");
+println("This script is designed for Linux and basic usage.");
+println("For advanced usage, please go to https://github.com/louislam/uptime-kuma/wiki/Installation");
+println("---------------------------------------");
+println("");
+println("Local - Install Uptime Kuma in your current machine with git, Node.js 14 and pm2");
+println("Docker - Install Uptime Kuma Docker container");
+println("");
+
+if ("$1" != "") {
+    type = "$1";
+} else {
+    call("read", "-p", "Which installation method do you prefer? [DOCKER/local]: ", "type");
+}
+
+if (type == "local") {
+
+    if ("$1" != "") {
+        port = "$3";
+    } else {
+        call("read", "-p", "Listening Port [3001]: ", "port");
+    }
+
+    if (exists("/etc/redhat-release")) {
+        os = call("cat", "/etc/redhat-release");
+        distribution = "rhel";
+    }
+
+    bash("arch=$(uname -i)");
+
+    println("Your OS: " ++ os);
+    println("Distribution: " ++ distribution);
+    println("Arch: " ++ arch);
+
+    if (distribution == "rhel") {
+        bash("nodePath=$(command -v node)");
+
+        if (nodePath != "") {
+            bash("nodeVersion=$(node -e 'console.log(process.versions.node.split(`.`)[0])')");
+            println("Node Version: " ++ nodeVersion);
+
+            if (nodeVersion < "12") {
+                println("Error: Required Node.js 14");
+                call("exit", "1");
+
+            } else {
+                if (nodeVersion == "12") {
+                    println("Warning: NodeJS " ++ nodeVersion ++ " is not tested.");
+                }
+                println("OK");
+            }
+
+        } else {
+
+        }
+
+
+
+        call("yum", "install", "git", "-y");
+    }
+
+} else {
+    call("read", "-p", "Expose Port [3001]: ", "port");
+    call("read", "-p", "Volume Name [uptime-kuma]: ", "volume");
+}