Added settings API.

.gitignore

@@ -130,4 +130,8 @@ dist
 .yarn/install-state.gz
 .pnp.*
 
+# Project-related files
+config.yml
+src/_settings.scss
+src/main.scss
 out/

build.js

@@ -1,6 +1,40 @@
 import sass from "sass"
 import fs from "fs"
+import { log } from "console"
+import YAML from "yaml"
+import parseTemplate from "./parseTemplate.js"
 
+export default function buildNebulosa(debug) {
+    log("Generating Nebulosa CSS...")
+
+    log("Reading config...")
+    if (!fs.existsSync("./config.yml")) {
+        log("No config file found!")
+        log("Copying 'example-config.yml' to 'config.yml'...")
+        fs.copyFileSync("./example-config.yml", "config.yml")
+    }
+    const config = YAML.parse(fs.readFileSync("./config.yml").toString())
+
+    log("Reading templates...")
+    const templateFiles = fs.readdirSync("./src/templates")
+    const templates = templateFiles.map(
+        fileName => {
+            return {
+                fileName,
+                content: fs.readFileSync(`./src/templates/${fileName}`).toString()
+            }
+        }
+    )
+
+    log("Executing templates...")
+    templates.forEach(
+        template => {
+            const compiledTemplate = parseTemplate(template.content, config)
+            fs.writeFileSync(`./src/${template.fileName}`, compiledTemplate)
+        }
+    )
+
+    log("Compiling SCSS...")
     const { css } = sass.compile(
         "./src/main.scss",
         { style: "compressed" }
@@ -12,10 +46,21 @@ const now = new Date()
         .replace(/:/g, ".")
         .replace(/T/g, "_")
 
+    const outFileName = debug ? "./out/main.css" : `./out/${now}.css`
+
     if (!fs.existsSync("./out"))
         fs.mkdirSync("./out")
 
+    log("Writing file...")
     fs.writeFileSync(
-    `./out/${now}.css`,
+        outFileName,
         "/* Generated using Nebulosa CSS. https://git.qwik.space/BurnyLlama/nebulosa-css */\n" + css
     )
+
+    log(`Saved config file to ./out/${now}.css`)
+}
+
+// If the file is run directly from the commandline, build Nebulosa.
+if (import.meta.url === `file://${process.argv[0]}`) {
+    buildNebulosa(false)
+}

dev.js

@@ -2,7 +2,7 @@ import chokidar from "chokidar"
 import express from "express"
 import fs from "fs"
 import njk from "nunjucks"
-import sass from "sass"
+import buildNebulosa from "./build.js"
 
 const server = express()
 
@@ -17,35 +17,24 @@ njk.configure(
     }
 )
 
-chokidar.watch("./src").on("change", () => {
-    console.log("Detected changes in SCSS! Recompiling...")
+// Do an initial build of Nebulosa, then watch for changes...
+buildNebulosa(true)
+chokidar
+    .watch(["./src", "./config.yml", "./example-config.yml"])
+    .on(
+        "change",
+        () => {
+            console.log("Detected changes in SCSS or config! Recompiling...")
 
             try {
-        const { css } = sass.compile(
-            "./src/main.scss",
-            {
-                sourceMap: false,
-                alertColor: true,
-                style: "compressed"
-            }
-        )
-
-        console.log("Compile done! Saving changes...")
-
-        if (!fs.existsSync("./out"))
-            fs.mkdirSync("./out")
-
-        fs.writeFileSync(
-            "./out/main.css",
-            css
-        )
-
+                buildNebulosa(true)
                 console.log("Saved!")
             } catch (error) {
                 console.log("Error while compiling!")
                 console.error(error)
             }
-})
+        }
+    )
 
 server.use("/assets", express.static("./out"))
 

package.json

@@ -20,7 +20,8 @@
     "chokidar": "^3.5.3",
     "express": "^4.18.2",
     "nunjucks": "^3.2.3",
-    "sass": "^1.58.3"
+    "sass": "^1.58.3",
+    "yaml": "^2.3.1"
   },
   "devDependencies": {
     "eslint": "^8.35.0"

parseTemplate.js

@@ -0,0 +1,69 @@
+import { log, error } from "console"
+
+/**
+ * Flattens an object into a 1 level deep object.
+ * { a: { b: 1, c: 2 } } --> { "a.b": 1, "a.c": 2 }
+ * @param {Object} object
+ * @return {Object}
+ */
+function flattenObject(object) {
+    let finalObject = {}
+
+    for (const key in object) {
+        // Skip if key isn't own.
+        if (!Object.prototype.hasOwnProperty.call(object, key))
+            continue
+
+        if (typeof object[key] === "object" && object[key] !== null) {
+            const flattenedObject = flattenObject(object[key])
+            for (const innerKey in flattenedObject) {
+                // Skip if key isn't own.
+                if (!Object.prototype.hasOwnProperty.call(flattenedObject, innerKey))
+                    continue
+                finalObject[`${key}.${innerKey}`] = flattenedObject[innerKey]
+            }
+        } else {
+            finalObject[key] = object[key]
+        }
+    }
+
+    return finalObject
+}
+
+export default function parseTemplate(template, data) {
+    const flattenedData = flattenObject(data)
+    log("Loaded config:")
+
+    return template
+        // Syntax:  {{ variableName }}
+        // Does:    Inserts a variable, if it exists.
+        .replace(
+            /{{\s*(.+)\s*}}/gm,
+            (match, variableName) => {
+                if (flattenedData[variableName] === undefined || flattenedData[variableName] === null) {
+                    error(`Error: ${variableName} is not defined!`)
+                    process.exit(1)
+                }
+
+                log(`${variableName} = ${flattenedData[variableName]}`)
+                return flattenedData[variableName]
+            }
+        )
+        // Syntax:
+        //   {% if variableName %}
+        //       <code to include>
+        //   {% endif %}
+        // Does: includes <code to include> if variableName exists and is true.
+        .replace(
+            /^{%\s*if\s*(.+)\s*%}$([\s\S]*?)^{%\s*endif\s*%}$/gm,
+            (match, variableName, codeBlock) => {
+                if (flattenedData[variableName] === undefined || flattenedData[variableName] === null) {
+                    error(`Error: ${variableName} is not defined!`)
+                    process.exit(1)
+                }
+
+                log(`${variableName} = ${flattenedData[variableName]}`)
+                return flattenedData[variableName] ? codeBlock : ""
+            }
+        )
+}