From 9e96fae0da3a6b0c3fb6fa5f4dacf0c4bc9bd0c7 Mon Sep 17 00:00:00 2001
From: Daniil Gaponov <dagaponov@yandex-team.ru>
Date: Sat, 15 Jun 2024 22:39:53 +0300
Subject: [PATCH] feat: base theme export

---
 .../ColorPickerInput/ColorPickerInput.scss    | 12 ++-
 .../ColorPickerInput/ColorPickerInput.tsx     |  1 +
 .../PrivateColorSelect/PrivateColorSelect.tsx | 37 +--------
 .../Theme/ThemeCreator/ThemeCreator.tsx       |  6 +-
 src/components/Theme/utils.ts                 | 83 ++++++++++++++++++-
 5 files changed, 100 insertions(+), 39 deletions(-)

diff --git a/src/components/ColorPickerInput/ColorPickerInput.scss b/src/components/ColorPickerInput/ColorPickerInput.scss
index a42d8a7ef183..68d19b24298a 100644
--- a/src/components/ColorPickerInput/ColorPickerInput.scss
+++ b/src/components/ColorPickerInput/ColorPickerInput.scss
@@ -5,6 +5,11 @@ $block: '.#{variables.$ns}color-picker';
 #{$block} {
     --g-border-radius-xl: 8px;
     flex-grow: 1;
+    position: relative;
+
+    &__text-input {
+        z-index: 1;
+    }
 
     &__preview {
         margin-inline-start: var(--g-spacing-2);
@@ -12,11 +17,14 @@ $block: '.#{variables.$ns}color-picker';
     }
 
     &__input {
-        width: 100%;
-        height: 0;
+        width: 35px;
         opacity: 0;
         padding: 0;
         margin: 0;
         border: 0;
+        position: absolute;
+        bottom: 0;
+        right: 0;
+        z-index: 0;
     }
 }
diff --git a/src/components/ColorPickerInput/ColorPickerInput.tsx b/src/components/ColorPickerInput/ColorPickerInput.tsx
index 06d5c36dbe8f..1f458709bbd3 100644
--- a/src/components/ColorPickerInput/ColorPickerInput.tsx
+++ b/src/components/ColorPickerInput/ColorPickerInput.tsx
@@ -95,6 +95,7 @@ export const ColorPickerInput = ({
     return (
         <Flex className={b()} direction="column">
             <TextInput
+                className={b('text-input')}
                 name={name}
                 value={managedValue}
                 errorPlacement="inside"
diff --git a/src/components/PrivateColorSelect/PrivateColorSelect.tsx b/src/components/PrivateColorSelect/PrivateColorSelect.tsx
index 5cec93a91b33..c0b515d2086a 100644
--- a/src/components/PrivateColorSelect/PrivateColorSelect.tsx
+++ b/src/components/PrivateColorSelect/PrivateColorSelect.tsx
@@ -1,11 +1,11 @@
-import {ChevronDown, DiamondExclamation, PencilToLine} from '@gravity-ui/icons';
-import {ActionTooltip, Button, Flex, Icon, Popup, TextInput} from '@gravity-ui/uikit';
+import {ChevronDown, PencilToLine} from '@gravity-ui/icons';
+import {Button, Flex, Icon, Popup, TextInput} from '@gravity-ui/uikit';
 import React from 'react';
 
 import {block} from '../../utils';
 import {ColorPickerInput} from '../ColorPickerInput/ColorPickerInput';
 import {ColorPreview} from '../ColorPreview/ColorPreview';
-import {createPrivateColorTitle, isPrivateColorToken, parsePrivateColorToken} from '../Theme/utils';
+import {isPrivateColorToken} from '../Theme/utils';
 
 import './PrivateColorSelect.scss';
 import {PrivateColorSelectPopupContent} from './PrivateColorSelectPopupContent';
@@ -29,26 +29,6 @@ export const PrivateColorSelect: React.FC<PrivateColorSelectProps> = ({
     const containerRef = React.useRef(null);
     const [showPopup, toggleShowPopup] = React.useReducer((prev) => !prev, false);
     const isCustomValue = !isPrivateColorToken(value);
-    const isValueDiffersFromDefault = defaultValue && defaultValue !== value;
-
-    const defaultValueToken = React.useMemo(() => {
-        if (!defaultValue) {
-            return '';
-        }
-
-        const result = parsePrivateColorToken(defaultValue);
-        if (result) {
-            return createPrivateColorTitle(result.mainColorToken, result.privateColorCode);
-        }
-
-        return '';
-    }, [defaultValue]);
-
-    const resetToDefault = React.useCallback(() => {
-        if (defaultValue) {
-            onChange(defaultValue);
-        }
-    }, [onChange, defaultValue]);
 
     const switchMode = React.useCallback(() => {
         if (isCustomValue) {
@@ -85,17 +65,6 @@ export const PrivateColorSelect: React.FC<PrivateColorSelectProps> = ({
                             <Button view="flat-secondary" onClick={toggleShowPopup}>
                                 <Icon data={ChevronDown} />
                             </Button>
-                            {isValueDiffersFromDefault && (
-                                <ActionTooltip
-                                    title="The value is overriden"
-                                    description={`Effective value is \`var(${defaultValueToken});\``}
-                                    placement="bottom-end"
-                                >
-                                    <Button view="flat-danger" onClick={resetToDefault}>
-                                        <Icon data={DiamondExclamation} />
-                                    </Button>
-                                </ActionTooltip>
-                            )}
                         </Flex>
                     }
                     controlProps={{
diff --git a/src/components/Theme/ThemeCreator/ThemeCreator.tsx b/src/components/Theme/ThemeCreator/ThemeCreator.tsx
index d0c05ce8e5fd..90127174ccc5 100644
--- a/src/components/Theme/ThemeCreator/ThemeCreator.tsx
+++ b/src/components/Theme/ThemeCreator/ThemeCreator.tsx
@@ -1,7 +1,7 @@
 import React from 'react';
 
 import {ThemeOptions} from '../types';
-import {initThemeWizard} from '../utils';
+import {exportTheme, initThemeWizard} from '../utils';
 
 import {ThemeCreatorContextProvider} from './ThemeCreatorContext';
 
@@ -16,6 +16,10 @@ export const ThemeCreator: React.FC<ThemeCreatorProps> = ({theme, children}) =>
         updateState(initThemeWizard(theme));
     }, [theme]);
 
+    React.useEffect(() => {
+        console.log(exportTheme(state, 'scss'));
+    }, [state]);
+
     return (
         <ThemeCreatorContextProvider
             value={{
diff --git a/src/components/Theme/utils.ts b/src/components/Theme/utils.ts
index 263b7676366a..f83e4083baa8 100644
--- a/src/components/Theme/utils.ts
+++ b/src/components/Theme/utils.ts
@@ -5,11 +5,14 @@ import lowerCase from 'lodash/lowerCase';
 
 import {
     DEFAULT_NEW_COLOR_TITLE,
+    DEFAULT_PALETTE,
     DEFAULT_PALETTE_TOKENS,
+    DEFAULT_THEME,
     THEME_COLOR_VARIABLE_PREFIX,
 } from './constants';
 import {generatePrivateColors} from './privateColors';
 import type {
+    ColorOption,
     ColorsOptions,
     Palette,
     PaletteTokens,
@@ -58,10 +61,24 @@ export function parsePrivateColorToken(privateColorToken: string) {
     };
 }
 
-export function createPrivateColorTitle(mainColorToken: string, privateColorCode: string) {
+function createPrivateColorCssVariable(mainColorToken: string, privateColorCode: string) {
     return `${THEME_COLOR_VARIABLE_PREFIX}-${mainColorToken}-${privateColorCode}`;
 }
 
+function createPrivateColorCssVariableFromToken(privateColorToken: string) {
+    const result = parsePrivateColorToken(privateColorToken);
+
+    if (result) {
+        return createPrivateColorCssVariable(result.mainColorToken, result.privateColorCode);
+    }
+
+    return '';
+}
+
+function createUtilityColorCssVariable(colorName: string) {
+    return `${THEME_COLOR_VARIABLE_PREFIX}-${colorName}`;
+}
+
 function isManuallyCreatedToken(token: string) {
     return !DEFAULT_PALETTE_TOKENS.has(token);
 }
@@ -362,7 +379,7 @@ export function getThemeColorOptions({
                         paletteTokens[token].privateColors[themeVariant]!,
                     ).map(([privateColorCode, color]) => ({
                         token: createPrivateColorToken(token, privateColorCode),
-                        title: createPrivateColorTitle(token, privateColorCode),
+                        title: createPrivateColorCssVariable(token, privateColorCode),
                         color,
                     })),
                 },
@@ -417,3 +434,65 @@ export function initThemeWizard(inputTheme: ThemeOptions): ThemeWizardState {
         tokens: Object.keys(paletteTokens),
     };
 }
+
+type ExportType = 'scss' | 'json';
+
+export function exportTheme(themeState: ThemeWizardState, exportType: ExportType = 'scss'): string {
+    if (exportType === 'json') {
+        throw new Error('Not implemented');
+    }
+
+    const {paletteTokens} = themeState;
+
+    const prepareThemeVariables = (themeVariant: ThemeVariant) => {
+        let cssVariables = '';
+        const privateColors: Record<string, string> = {};
+
+        themeState.tokens.forEach((token) => {
+            // Dont export colors that are equals to default
+            if (DEFAULT_PALETTE[themeVariant][token] === themeState.palette[themeVariant][token]) {
+                return;
+            }
+
+            if (paletteTokens[token]?.privateColors[themeVariant]) {
+                Object.entries(paletteTokens[token].privateColors[themeVariant]).forEach(
+                    ([privateColorCode, color]) => {
+                        privateColors[createPrivateColorToken(token, privateColorCode)] = color;
+                        cssVariables += `${createPrivateColorCssVariable(
+                            token,
+                            privateColorCode,
+                        )}: ${color};\n`;
+                    },
+                );
+                cssVariables += '\n';
+            }
+        });
+
+        cssVariables += '\n';
+
+        Object.entries(themeState.colors[themeVariant]).forEach(
+            ([colorName, colorOrPrivateToken]) => {
+                // Dont export colors that are equals to default
+                if (
+                    DEFAULT_THEME.colors[themeVariant][colorName as ColorOption] ===
+                    colorOrPrivateToken
+                ) {
+                    return;
+                }
+
+                const color = isPrivateColorToken(colorOrPrivateToken)
+                    ? `var(${createPrivateColorCssVariableFromToken(colorOrPrivateToken)})`
+                    : colorOrPrivateToken;
+
+                cssVariables += `${createUtilityColorCssVariable(colorName)}: ${color};\n`;
+            },
+        );
+
+        return cssVariables;
+    };
+
+    let result = '';
+    result += '// Light\n' + prepareThemeVariables('light');
+    result += '\n// Dark\n' + prepareThemeVariables('dark');
+    return result;
+}