From e4570832e891cf8741f6db26a3f3d3e6f9e50d54 Mon Sep 17 00:00:00 2001
From: alexbcberio <alexbcberio@gmail.com>
Date: Fri, 7 Jan 2022 17:24:17 +0100
Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=20Create=20lightTheme=20action?=
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Changes vscode theme and windows color scheme
---
 .../actions/lightTheme/helpers.ts             | 151 ++++++++++++++++++
 .../pubSubClient/actions/lightTheme/index.ts  | 107 +++++++++++++
 .../pubSubClient/actions/lightTheme/types.ts  |  15 ++
 3 files changed, 273 insertions(+)
 create mode 100644 src/backend/pubSubClient/actions/lightTheme/helpers.ts
 create mode 100644 src/backend/pubSubClient/actions/lightTheme/index.ts
 create mode 100644 src/backend/pubSubClient/actions/lightTheme/types.ts

diff --git a/src/backend/pubSubClient/actions/lightTheme/helpers.ts b/src/backend/pubSubClient/actions/lightTheme/helpers.ts
new file mode 100644
index 0000000..1e42053
--- /dev/null
+++ b/src/backend/pubSubClient/actions/lightTheme/helpers.ts
@@ -0,0 +1,151 @@
+import * as regedit from "regedit";
+
+import { ColorTheme, RegeditListResult, RegisterColorTheme } from "./types";
+import { readFile, stat, writeFile } from "fs/promises";
+import { vsCodeDarkTheme, vsCodeLightTheme } from ".";
+
+import { platform } from "os";
+import { resolve } from "path";
+
+const isWindows = platform() === "win32";
+const registerColorThemePath =
+  "HKCU\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize";
+
+function vsCodeSettingsPath(): string {
+  if (!isWindows) {
+    throw new Error("This function only supports win32 platform");
+  }
+
+  const vsCodeSettings = resolve(
+    // @ts-expect-error Type string | undefined is not assignable
+    process.env.APPDATA,
+    "./Code/User/settings.json"
+  );
+
+  return vsCodeSettings;
+}
+
+async function existsVsCodeSettings(): Promise<boolean> {
+  try {
+    await stat(vsCodeSettingsPath());
+  } catch (e) {
+    return false;
+  }
+
+  return true;
+}
+
+async function changeVsCodeColorTheme(colorTheme: ColorTheme): Promise<void> {
+  let theme: string;
+
+  switch (colorTheme) {
+    case "light":
+      theme = vsCodeLightTheme;
+      break;
+    case "dark":
+    default:
+      theme = vsCodeDarkTheme;
+  }
+
+  if (!theme) {
+    return;
+  }
+
+  const filePath = vsCodeSettingsPath();
+  const settings = JSON.parse((await readFile(filePath)).toString());
+
+  const colorThemeSettingKey = "workbench.colorTheme";
+
+  if (settings[colorThemeSettingKey] === theme) {
+    return;
+  }
+
+  settings[colorThemeSettingKey] = theme;
+
+  await writeFile(filePath, JSON.stringify(settings));
+}
+
+function regeditList(keys: string | Array<string>): Promise<RegeditListResult> {
+  const listKeys = Array.isArray(keys) ? keys : [keys];
+
+  return new Promise((res, rej) => {
+    regedit.list(listKeys, (err, result) => {
+      if (err) {
+        rej(err);
+      }
+
+      res(result);
+    });
+  });
+}
+
+function regeditPut(values: regedit.RegistryItemPutCollection): Promise<void> {
+  return new Promise((res, rej) => {
+    regedit.putValue(values, (err) => {
+      if (err) {
+        rej(err);
+      }
+
+      res();
+    });
+  });
+}
+
+async function changeRegisterColorTheme(
+  value: RegisterColorTheme
+): Promise<void> {
+  const type = "REG_DWORD";
+
+  const values: regedit.RegistryItemPutCollection = {
+    [registerColorThemePath]: {
+      SystemUsesLightTheme: {
+        value,
+        type,
+      },
+      AppsUseLightTheme: {
+        value,
+        type,
+      },
+    },
+  };
+
+  await regeditPut(values);
+}
+
+function registerColorThemeValue(colorTheme: ColorTheme): RegisterColorTheme {
+  let registerValue: RegisterColorTheme;
+
+  switch (colorTheme) {
+    case "light":
+      registerValue = RegisterColorTheme.Light;
+      break;
+    case "dark":
+    default:
+      registerValue = RegisterColorTheme.Dark;
+  }
+
+  return registerValue;
+}
+
+async function changeWindowsColorTheme(colorTheme: ColorTheme): Promise<void> {
+  const registerValue = registerColorThemeValue(colorTheme);
+  const listResult = await regeditList(registerColorThemePath);
+  const keyValues = listResult[registerColorThemePath].values;
+  const { AppsUseLightTheme, SystemUsesLightTheme } = keyValues;
+
+  if (
+    AppsUseLightTheme.value === registerValue &&
+    SystemUsesLightTheme.value === registerValue
+  ) {
+    return;
+  }
+
+  await changeRegisterColorTheme(registerValue);
+}
+
+export {
+  isWindows,
+  existsVsCodeSettings,
+  changeVsCodeColorTheme,
+  changeWindowsColorTheme,
+};
diff --git a/src/backend/pubSubClient/actions/lightTheme/index.ts b/src/backend/pubSubClient/actions/lightTheme/index.ts
new file mode 100644
index 0000000..4aaf90b
--- /dev/null
+++ b/src/backend/pubSubClient/actions/lightTheme/index.ts
@@ -0,0 +1,107 @@
+import {
+  changeVsCodeColorTheme,
+  changeWindowsColorTheme,
+  existsVsCodeSettings,
+  isWindows,
+} from "./helpers";
+
+import { ColorTheme } from "./types";
+import { LOG_PREFIX } from "../..";
+import { RedemptionMessage } from "../../../../interfaces/RedemptionMessage";
+import { isProduction } from "../../../helpers/util";
+
+const vsCodeLightTheme = "Min Light";
+const vsCodeDarkTheme = "Min Dark";
+
+const minEventDuration = 10;
+
+let restoreAt = 0;
+let restoreTimeout: NodeJS.Timeout | null;
+
+function calculateEventDurationMs(rewardCost: number): number {
+  const reduceBase = 200;
+  const ms = 1e3;
+
+  const eventDuration = Math.max(minEventDuration, rewardCost - reduceBase);
+
+  return eventDuration * ms;
+}
+
+function msText(ms: number): string {
+  let amountTime: number;
+  let amountUnit: string;
+
+  const second = 1e3;
+  const minute = 60e3;
+
+  if (ms >= minute) {
+    amountTime = ms / minute;
+    amountUnit = "minuto";
+  } else {
+    amountTime = ms / second;
+    amountUnit = "segundo";
+  }
+
+  const decimalPrecision = 1e2;
+  const roundedAmountTime =
+    Math.round(amountTime * decimalPrecision) / decimalPrecision;
+  // eslint-disable-next-line no-magic-numbers
+  const pluralize = roundedAmountTime > 1 ? "s" : "";
+
+  return `${roundedAmountTime} ${amountUnit}${pluralize}`;
+}
+
+async function lightTheme(msg: RedemptionMessage): Promise<RedemptionMessage> {
+  if (!isWindows) {
+    throw new Error("Only available on Windows platform");
+  }
+
+  const colorTheme: ColorTheme = "light";
+
+  if (isProduction) {
+    if (await existsVsCodeSettings()) {
+      await changeVsCodeColorTheme(colorTheme);
+    }
+
+    await changeWindowsColorTheme(colorTheme);
+  } else {
+    console.log(
+      `${LOG_PREFIX}Light Theme not changed to ${colorTheme} (not production)`
+    );
+  }
+
+  const eventDuration = calculateEventDurationMs(msg.rewardCost);
+
+  if (restoreTimeout) {
+    clearTimeout(restoreTimeout);
+
+    msg.message = `Aumentado el tiempo con tema claro por ${msText(
+      eventDuration
+    )}`;
+  } else {
+    restoreAt = Date.now();
+
+    msg.message = `Disfruta de un dia iluminado`;
+  }
+
+  restoreAt += eventDuration;
+
+  const timeoutTime = restoreAt - Date.now();
+
+  msg.message += ` (tiempo acumulado ${msText(timeoutTime)})`;
+
+  restoreTimeout = setTimeout(async () => {
+    const colorTheme: ColorTheme = "dark";
+
+    restoreTimeout = null;
+
+    await Promise.all([
+      changeVsCodeColorTheme(colorTheme),
+      changeWindowsColorTheme(colorTheme),
+    ]);
+  }, timeoutTime);
+
+  return msg;
+}
+
+export { lightTheme, vsCodeDarkTheme, vsCodeLightTheme };
diff --git a/src/backend/pubSubClient/actions/lightTheme/types.ts b/src/backend/pubSubClient/actions/lightTheme/types.ts
new file mode 100644
index 0000000..e574918
--- /dev/null
+++ b/src/backend/pubSubClient/actions/lightTheme/types.ts
@@ -0,0 +1,15 @@
+import * as regedit from "regedit";
+
+type ColorTheme = "light" | "dark";
+
+type RegeditListResult = Record<string, regedit.RegistryItem>;
+
+const registerDarkValue = 0;
+const registerLightValue = 1;
+
+enum RegisterColorTheme {
+  Dark = registerDarkValue,
+  Light = registerLightValue,
+}
+
+export { ColorTheme, RegeditListResult, RegisterColorTheme };