added import/export for theme

src/components/Theme/ThemeManager.tsx

@@ -26,7 +26,9 @@ import { darkThemeOptions } from '../../styles/theme-dark';
 import { lightThemeOptions } from '../../styles/theme-light';
 import ShortUniqueId from 'short-unique-id';
 import { rgbStringToHsva, rgbaStringToHsva } from '@uiw/color-convert';
-
+import FileDownloadIcon from '@mui/icons-material/FileDownload';
+import { saveFileToDiskGeneric } from '../../utils/generateWallet/generateWallet';
+import { handleImportClick } from '../../utils/fileReading';
 const uid = new ShortUniqueId({ length: 8 });
 
 function detectColorFormat(color) {
@@ -36,6 +38,36 @@ function detectColorFormat(color) {
   return null;
 }
 
+const validateTheme = (theme) => {
+  if (typeof theme !== 'object' || !theme) return false;
+  if (typeof theme.name !== 'string') return false;
+  if (!theme.light || typeof theme.light !== 'object') return false;
+  if (!theme.dark || typeof theme.dark !== 'object') return false;
+
+  // Optional: deeper checks on structure
+  const requiredKeys = [
+    'primary',
+    'secondary',
+    'background',
+    'text',
+    'border',
+    'other',
+  ];
+
+  for (const mode of ['light', 'dark']) {
+    const modeTheme = theme[mode];
+    if (modeTheme.mode !== mode) return false;
+
+    for (const key of requiredKeys) {
+      if (!modeTheme[key] || typeof modeTheme[key] !== 'object') {
+        return false;
+      }
+    }
+  }
+
+  return true;
+};
+
 export default function ThemeManager() {
   const { userThemes, addUserTheme, setUserTheme, currentThemeId } =
     useThemeContext();
@@ -152,6 +184,38 @@ export default function ThemeManager() {
     );
   };
 
+  const exportTheme = async (theme) => {
+    try {
+      const copyTheme = structuredClone(theme);
+      delete copyTheme.id;
+      const fileName = `ui_theme_${theme.name}.json`;
+
+      const blob = new Blob([JSON.stringify(copyTheme, null, 2)], {
+        type: 'application/json',
+      });
+
+      await saveFileToDiskGeneric(blob, fileName);
+    } catch (error) {
+      console.error(error);
+    }
+  };
+
+  const importTheme = async (theme) => {
+    try {
+      const fileContent = await handleImportClick('.json');
+      const importedTheme = JSON.parse(fileContent);
+      if (!validateTheme(importedTheme)) {
+        throw new Error('Invalid theme format');
+      }
+      const newTheme = { ...importedTheme, id: uid.rnd() };
+      const updatedThemes = [...userThemes, newTheme];
+      addUserTheme(updatedThemes);
+      setUserTheme(newTheme);
+    } catch (error) {
+      console.error(error);
+    }
+  };
+
   return (
     <Box p={2}>
       <Typography variant="h5" gutterBottom>
@@ -165,7 +229,16 @@ export default function ThemeManager() {
       >
         Add Theme
       </Button>
-
+      <Button
+        sx={{
+          marginLeft: '20px',
+        }}
+        variant="contained"
+        startIcon={<AddIcon />}
+        onClick={importTheme}
+      >
+        Import theme
+      </Button>
       <List>
         {userThemes?.map((theme, index) => (
           <ListItemButton
@@ -178,6 +251,9 @@ export default function ThemeManager() {
             <ListItemSecondaryAction>
               {theme.id !== 'default' && (
                 <>
+                  <IconButton onClick={() => exportTheme(theme)}>
+                    <FileDownloadIcon />
+                  </IconButton>
                   <IconButton onClick={() => handleEditTheme(theme.id)}>
                     <EditIcon />
                   </IconButton>

src/utils/fileReading/index.ts

@@ -1,63 +1,93 @@
 // @ts-nocheck
 
 class Semaphore {
-	constructor(count) {
-		this.count = count
-		this.waiting = []
-	}
-	acquire() {
-		return new Promise(resolve => {
-			if (this.count > 0) {
-				this.count--
-				resolve()
-			} else {
-				this.waiting.push(resolve)
-			}
-		})
-	}
-	release() {
-		if (this.waiting.length > 0) {
-			const resolve = this.waiting.shift()
-			resolve()
-		} else {
-			this.count++
-		}
-	}
+  constructor(count) {
+    this.count = count;
+    this.waiting = [];
+  }
+  acquire() {
+    return new Promise((resolve) => {
+      if (this.count > 0) {
+        this.count--;
+        resolve();
+      } else {
+        this.waiting.push(resolve);
+      }
+    });
+  }
+  release() {
+    if (this.waiting.length > 0) {
+      const resolve = this.waiting.shift();
+      resolve();
+    } else {
+      this.count++;
+    }
+  }
 }
 
-let semaphore = new Semaphore(1)
-let reader = new FileReader()
+let semaphore = new Semaphore(1);
+let reader = new FileReader();
 
-export const fileToBase64 = (file) => new Promise(async (resolve, reject) => {
-	const reader = new FileReader(); // Create a new instance
-	await semaphore.acquire();
-	reader.readAsDataURL(file);
-	reader.onload = () => {
-	  const dataUrl = reader.result;
-	  semaphore.release();
-	  if (typeof dataUrl === 'string') {
-		resolve(dataUrl.split(',')[1]);
-	  } else {
-		reject(new Error('Invalid data URL'));
-	  }
-	  reader.onload = null; // Clear the handler
-  	  reader.onerror = null; // Clear the handle
-	};
-	reader.onerror = (error) => {
-	  semaphore.release();
-	  reject(error);
-	  reader.onload = null; // Clear the handler
-  	 reader.onerror = null; // Clear the handle
-	};
+export const fileToBase64 = (file) =>
+  new Promise(async (resolve, reject) => {
+    const reader = new FileReader(); // Create a new instance
+    await semaphore.acquire();
+    reader.readAsDataURL(file);
+    reader.onload = () => {
+      const dataUrl = reader.result;
+      semaphore.release();
+      if (typeof dataUrl === 'string') {
+        resolve(dataUrl.split(',')[1]);
+      } else {
+        reject(new Error('Invalid data URL'));
+      }
+      reader.onload = null; // Clear the handler
+      reader.onerror = null; // Clear the handle
+    };
+    reader.onerror = (error) => {
+      semaphore.release();
+      reject(error);
+      reader.onload = null; // Clear the handler
+      reader.onerror = null; // Clear the handle
+    };
   });
-  
 
-export const base64ToBlobUrl = (base64, mimeType = "image/png") => {
-    const binary = atob(base64);
-    const array = [];
-    for (let i = 0; i < binary.length; i++) {
-      array.push(binary.charCodeAt(i));
-    }
-    const blob = new Blob([new Uint8Array(array)], { type: mimeType });
-    return URL.createObjectURL(blob);
-  };
+export const base64ToBlobUrl = (base64, mimeType = 'image/png') => {
+  const binary = atob(base64);
+  const array = [];
+  for (let i = 0; i < binary.length; i++) {
+    array.push(binary.charCodeAt(i));
+  }
+  const blob = new Blob([new Uint8Array(array)], { type: mimeType });
+  return URL.createObjectURL(blob);
+};
+
+export const handleImportClick = async (fileTypes) => {
+  const fileInput = document.createElement('input');
+  fileInput.type = 'file';
+  fileInput.accept = fileTypes;
+
+  // Create a promise to handle file selection and reading synchronously
+  return await new Promise((resolve, reject) => {
+    fileInput.onchange = () => {
+      const file = fileInput.files[0];
+      if (!file) {
+        reject(new Error('No file selected'));
+        return;
+      }
+
+      const reader = new FileReader();
+      reader.onload = (e) => {
+        resolve(e.target.result); // Resolve with the file content
+      };
+      reader.onerror = () => {
+        reject(new Error('Error reading file'));
+      };
+
+      reader.readAsText(file); // Read the file as text (Base64 string)
+    };
+
+    // Trigger the file input dialog
+    fileInput.click();
+  });
+};