Implement a CLI command to change themes. (#136)

* Implement cli based theme applier.

* Remove references to old globalMousePos

* Use direct file path instead.

globals/useTheme.ts

@@ -0,0 +1,84 @@
+import Gio from "gi://Gio"
+import { bash, Notify } from "lib/utils";
+import icons from "lib/icons"
+
+globalThis.useTheme = (filePath: string): void => {
+    const themeOnly = true;
+    let file = Gio.File.new_for_path(filePath as string);
+    let [success, content] = file.load_contents(null);
+
+    if (!success) {
+        console.error(`Failed to import: ${filePath}`);
+        return;
+    }
+
+    Notify({
+        summary: `Importing ${themeOnly ? "Theme" : "Config"}`,
+        body: `Importing: ${filePath}`,
+        iconName: icons.ui.info,
+        timeout: 7000
+    });
+
+    let jsonString = new TextDecoder("utf-8").decode(content);
+    let importedConfig = JSON.parse(jsonString);
+
+    const hexColorPattern = /^#([0-9A-Fa-f]{6}|[0-9A-Fa-f]{8})$/;
+
+    const saveConfigToFile = (config: object, filePath: string) => {
+        let file = Gio.File.new_for_path(filePath);
+        let outputStream = file.replace(null, false, Gio.FileCreateFlags.NONE, null);
+        let dataOutputStream = new Gio.DataOutputStream({ base_stream: outputStream });
+
+        let jsonString = JSON.stringify(config, null, 2);
+        dataOutputStream.put_string(jsonString, null);
+        dataOutputStream.close(null);
+    };
+
+    const filterConfigForThemeOnly = (config: object) => {
+        let filteredConfig = {};
+        for (let key in config) {
+            if (typeof config[key] === 'string' && hexColorPattern.test(config[key])) {
+                filteredConfig[key] = config[key];
+            }
+        }
+        return filteredConfig;
+    };
+
+    const filterConfigForNonTheme = (config: object) => {
+        let filteredConfig = {};
+        for (let key in config) {
+            if (!(typeof config[key] === 'string' && hexColorPattern.test(config[key]))) {
+                filteredConfig[key] = config[key];
+            }
+        }
+        return filteredConfig;
+    };
+
+    let tmpConfigFile = Gio.File.new_for_path(`${TMP}/config.json`);
+    let optionsConfigFile = Gio.File.new_for_path(OPTIONS);
+
+    let [tmpSuccess, tmpContent] = tmpConfigFile.load_contents(null);
+    let [optionsSuccess, optionsContent] = optionsConfigFile.load_contents(null);
+
+    if (!tmpSuccess || !optionsSuccess) {
+        console.error("Failed to read existing configuration files.");
+        return;
+    }
+
+    let tmpConfig = JSON.parse(new TextDecoder("utf-8").decode(tmpContent));
+    let optionsConfig = JSON.parse(new TextDecoder("utf-8").decode(optionsContent));
+
+    if (themeOnly) {
+        const filteredConfig = filterConfigForThemeOnly(importedConfig);
+        tmpConfig = { ...tmpConfig, ...filteredConfig };
+        optionsConfig = { ...optionsConfig, ...filteredConfig };
+    } else {
+        const filteredConfig = filterConfigForNonTheme(importedConfig);
+        tmpConfig = { ...tmpConfig, ...filteredConfig };
+        optionsConfig = { ...optionsConfig, ...filteredConfig };
+    }
+
+    saveConfigToFile(tmpConfig, `${TMP}/config.json`);
+    saveConfigToFile(optionsConfig, OPTIONS);
+    bash("pkill ags && ags");
+}