Add more details to version() return value

lib/www/server/lib/version.js

@@ -1,6 +1,11 @@
 const semver = require("semver");
 const { exec } = require("child_process");
+const { readFileSync } = require('fs');
+const { pool } = require('./db/connection');
+const { info } = require('./db');
+const api = require('../api');
 const pkg = require("../package.json");
+const { ALERT, ERROR, WARNING, NOTICE, INFO, DEBUG } = require('DOUGAL_ROOT/debug')(__filename);
 
 
 function compatible () {
@@ -23,9 +28,8 @@ function compatible () {
  * false otherwise.
  */
 function compatible_schema () {
-	const { info } = require('./db');
 	return new Promise ( async (resolve, reject) => {
-		const current = await info.get(null, "version/db_schema");
+		const current = await schema_version();
 		const wanted = pkg.config.db_schema;
 		const component = "schema";
 		if (semver.satisfies(current, wanted)) {
@@ -37,9 +41,8 @@ function compatible_schema () {
 }
 
 function compatible_api () {
-	const api = require('../api');
 	return new Promise ( async (resolve, reject) => {
-		const current = api.locals.version;
+		const current = api_version();
 		const wanted = pkg.config.api;
 		const component = "api";
 		if (semver.satisfies(current, wanted)) {
@@ -50,12 +53,51 @@ function compatible_api () {
 	});
 }
 
+async function db_version () {
+	const client = await pool.connect();
+	let res;
+	try {
+		res = (await client.query("SELECT version(), PostGIS_Version();"))?.rows[0];
+	} catch (err) {
+		ERROR(err);
+	} finally {
+		client.release();
+	}
+	return res;
+}
+
+async function os_version () {
+	try {
+		return Object.fromEntries(
+			readFileSync("/etc/os-release")
+			.toString("utf-8")
+			.split("\n")
+			.map(i =>
+				i.split("=", 2)
+				.map(i => i.replace(/^"|"$/g, ""))
+			)
+			.filter(i =>
+				["ID", "NAME", "PRETTY_NAME", "VERSION", "VERSION_ID"].includes(i[0])
+			)
+		);
+	} catch (err) {
+		ERROR(err);
+	}
+}
+
+async function schema_version () {
+	return await info.get(null, "version/db_schema");
+}
+
+function api_version () {
+	return api.locals.version;
+}
+
 
 /** Return software name.
  *
  */
-function name () {
-	const pkg = require("../package.json");
+function app_name () {
 	return pkg.name ?? pkg.description ?? "Unknown";
 }
 
@@ -81,11 +123,36 @@ async function describe () {
 	});
 }
 
-function version () {
+function version_old () {
 	return pkg.version;
 }
+
+async function version () {
+	const name = app_name();
+	const server = pkg.version;
+	const tag = await describe();
+	const api = await api_version();
+	const schema = await schema_version();
+	const db = await db_version();
+	const os = await os_version();
+	const compatibility = [
+		await compatible_schema(),
+		await compatible_api()
+	]
+
+	return {
+		name,
+		server,
+		tag,
+		api,
+		schema,
+		db,
+		os,
+		compatibility
+	}
+}
 version.compatible = compatible;
-version.name = name;
+version.name = app_name;
 version.describe = describe;
 
 module.exports = version;