Fix theme shop themes not applying as a base

- [#217] fixed theme shop themes not applying as a base
- added `themes` state path to store themes locally at

src/context/Theme.tsx

@@ -7,6 +7,8 @@ import { useEffect } from "preact/hooks";
 import { connectState } from "../redux/connector";
 
 import { Children } from "../types/Preact";
+import { fetchManifest, fetchTheme } from "../pages/settings/panes/ThemeShop";
+import { getState } from "../redux";
 
 export type Variables =
     | "accent"
@@ -72,7 +74,7 @@ export type Theme = {
 };
 
 export interface ThemeOptions {
-    preset?: string;
+    base?: string;
     ligatures?: boolean;
     custom?: Partial<Theme>;
 }
@@ -275,6 +277,27 @@ export const PRESETS: Record<string, Theme> = {
     },
 };
 
+// todo: store used themes locally
+export function getBaseTheme(name: string): Theme {
+    if (name in PRESETS) {
+        return PRESETS[name]
+    }
+
+    const themes = getState().themes
+
+    if (name in themes) {
+        const { theme } = themes[name];
+
+        return {
+            ...PRESETS[theme.light ? 'light' : 'dark'],
+            ...theme
+        }
+    }
+
+    // how did we get here
+    return PRESETS['dark']
+}
+
 const keys = Object.keys(PRESETS.dark);
 const GlobalTheme = createGlobalStyle<{ theme: Theme }>`
 :root {
@@ -283,10 +306,9 @@ const GlobalTheme = createGlobalStyle<{ theme: Theme }>`
 `;
 
 export const generateVariables = (theme: Theme) => {
-    const mergedTheme = { ...PRESETS[theme.light ? 'light' : 'dark'], ...theme }
-    return (Object.keys(mergedTheme) as Variables[]).map((key) => {
+    return (Object.keys(theme) as Variables[]).map((key) => {
         if (!keys.includes(key)) return;
-        return `--${key}: ${mergedTheme[key]};`;
+        return `--${key}: ${theme[key]};`;
     })
 }
 
@@ -300,8 +322,7 @@ interface Props {
 
 function Theme({ children, options }: Props) {
     const theme: Theme = {
-        ...PRESETS["dark"],
-        ...PRESETS[options?.preset ?? ""],
+        ...getBaseTheme(options?.base ?? 'dark'),
         ...options?.custom,
     };
 

src/pages/settings/panes/Appearance.tsx

@@ -98,7 +98,7 @@ export function Component(props: Props) {
 
     useEffect(() => setOverride({ css }), [setOverride, css]);
 
-    const selected = props.settings.theme?.preset ?? "dark";
+    const selected = props.settings.theme?.base ?? "dark";
     return (
         <div className={styles.appearance}>
             <h3>
@@ -113,7 +113,7 @@ export function Component(props: Props) {
                         data-active={selected === "light"}
                         onClick={() =>
                             selected !== "light" &&
-                            setTheme({ preset: "light" })
+                            setTheme({ base: "light" })
                         }
                         onContextMenu={(e) => e.preventDefault()}
                     />
@@ -128,7 +128,7 @@ export function Component(props: Props) {
                         draggable={false}
                         data-active={selected === "dark"}
                         onClick={() =>
-                            selected !== "dark" && setTheme({ preset: "dark" })
+                            selected !== "dark" && setTheme({ base: "dark" })
                         }
                         onContextMenu={(e) => e.preventDefault()}
                     />

src/pages/settings/panes/ThemeShop.tsx

@@ -4,7 +4,7 @@ import { useEffect, useState } from "preact/hooks";
 
 import { dispatch } from "../../../redux";
 
-import { Theme, generateVariables } from "../../../context/Theme";
+import { Theme, generateVariables, ThemeOptions } from "../../../context/Theme";
 
 import Tip from "../../../components/ui/Tip";
 import previewPath from "../assets/preview.svg";
@@ -21,14 +21,14 @@ export const fetchTheme = (slug: string): Promise<Theme> =>
         res.json(),
     );
 
-interface ThemeMetadata {
+export interface ThemeMetadata {
     name: string;
     creator: string;
     commit?: string;
     description: string;
 }
 
-type Manifest = {
+export type Manifest = {
     generated: string;
     themes: Record<string, ThemeMetadata>;
 };
@@ -189,14 +189,21 @@ export function ThemeShop() {
                         <div class="description">{theme.description}</div>
                         <button
                             class="preview"
-                            onClick={() =>
+                            onClick={() => {
+                                dispatch({
+                                    type: "THEMES_SET_THEME",
+                                    theme: {
+                                        slug,
+                                        meta: theme,
+                                        theme: themeData[slug]
+                                    }
+                                })
+
                                 dispatch({
                                     type: "SETTINGS_SET_THEME",
-                                    theme: {
-                                        custom: themeData[slug],
-                                    },
-                                })
-                            }>
+                                    theme: { base: slug },
+                                });
+                            }}>
                             <ThemePreview slug={slug} theme={themeData[slug]} />
                         </button>
                     </ThemeInfo>

src/redux/index.ts

@@ -14,6 +14,7 @@ import { QueuedMessage } from "./reducers/queue";
 import { SectionToggle } from "./reducers/section_toggle";
 import { Settings } from "./reducers/settings";
 import { SyncOptions } from "./reducers/sync";
+import { Themes } from "./reducers/themes";
 import { TrustedLinks } from "./reducers/trusted_links";
 import { Unreads } from "./reducers/unreads";
 
@@ -31,6 +32,7 @@ export type State = {
     notifications: Notifications;
     sectionToggle: SectionToggle;
     trustedLinks: TrustedLinks;
+    themes: Themes;
 };
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
@@ -62,6 +64,7 @@ store.subscribe(() => {
         notifications,
         sectionToggle,
         trustedLinks,
+        themes,
     } = store.getState() as State;
 
     localForage.setItem("state", {
@@ -78,6 +81,7 @@ store.subscribe(() => {
         notifications,
         sectionToggle,
         trustedLinks,
+        themes,
     });
 });
 

src/redux/reducers/index.ts

@@ -12,6 +12,7 @@ import { sectionToggle, SectionToggleAction } from "./section_toggle";
 import { config, ConfigAction } from "./server_config";
 import { settings, SettingsAction } from "./settings";
 import { sync, SyncAction } from "./sync";
+import { themes, ThemesAction } from "./themes";
 import { trustedLinks, TrustedLinksAction } from "./trusted_links";
 import { unreads, UnreadsAction } from "./unreads";
 
@@ -29,6 +30,7 @@ export default combineReducers({
     notifications,
     sectionToggle,
     trustedLinks,
+    themes,
 });
 
 export type Action =
@@ -45,4 +47,5 @@ export type Action =
     | NotificationsAction
     | SectionToggleAction
     | TrustedLinksAction
+    | ThemesAction
     | { type: "__INIT"; state: State };

src/redux/reducers/themes.ts

@@ -0,0 +1,33 @@
+import { Theme } from "../../context/Theme";
+
+import { ThemeMetadata } from "../../pages/settings/panes/ThemeShop";
+
+export interface StoredTheme {
+    slug: string;
+    meta: ThemeMetadata;
+    theme: Theme;
+}
+
+export type Themes = Record<string, StoredTheme>;
+
+export type ThemesAction =
+    | { type: undefined }
+    | { type: "THEMES_SET_THEME"; theme: StoredTheme }
+    | { type: "THEMES_REMOVE_THEME"; slug: string }
+    | { type: "RESET" };
+
+export function themes(state: Themes = {}, action: ThemesAction) {
+    switch (action.type) {
+        case "THEMES_SET_THEME":
+            return {
+                ...state,
+                [action.theme.slug]: action.theme,
+            };
+        case "THEMES_REMOVE_THEME":
+            return { ...state, [action.slug]: null };
+        case "RESET":
+            return {};
+        default:
+            return state;
+    }
+}