refactor: share whatsapp/twilio template logic via @chatwoot/utils (#15001)

# Pull Request Template

## Description
Moves the WhatsApp & Twilio content-template logic to the shared
[`@chatwoot/utils`](https://github.com/chatwoot/utils)
([PR](https://github.com/chatwoot/utils/pull/62)) package so web and
mobile share one implementation. The neutral core takes the raw template
and returns `processed_params`, the same shape the web parsers already
use, so it's a drop-in with no behavior change.

- `templateHelper.js` / `URLHelper.js` → source `MEDIA_FORMATS`,
`findComponentByType`, `processVariable`, `buildTemplateParameters`,
`extractFilenameFromUrl` from the package
- `inboxes.js` → filters with shared `isSendableTemplate`
- `WhatsAppTemplateParser.vue` / `ContentTemplateParser.vue` →
`isFormInvalid` and Twilio media helpers now use the shared
`isWhatsAppComplete` / `isTwilioComplete` / `applyTwilioMediaFilename`

> Depends on the `@chatwoot/utils` release adding the shared template
API, bump `package.json` from `^0.0.55` to the published version before
merge.

Fixes
[CW-7540](https://linear.app/chatwoot/issue/CW-7540/web-templates-integration-with-utils)

## Type of change

- [x] Breaking change (Refactor)

---------

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>
Co-authored-by: Muhsin <12408980+muhsin-k@users.noreply.github.com>

app/javascript/dashboard/helper/templateHelper.js

@@ -1,19 +1,16 @@
-// Constants
+import { processVariable, buildWhatsAppProcessedParams } from '@chatwoot/utils';
+
+// Constants and pure template helpers are shared with the mobile app via
+// @chatwoot/utils so the logic lives in one place.
+export {
+  MEDIA_FORMATS,
+  COMPONENT_TYPES,
+  findComponentByType,
+  processVariable,
+} from '@chatwoot/utils';
+
 export const DEFAULT_LANGUAGE = 'en';
 export const DEFAULT_CATEGORY = 'UTILITY';
-export const COMPONENT_TYPES = {
-  HEADER: 'HEADER',
-  BODY: 'BODY',
-  BUTTONS: 'BUTTONS',
-};
-export const MEDIA_FORMATS = ['IMAGE', 'VIDEO', 'DOCUMENT'];
-
-export const findComponentByType = (template, type) =>
-  template.components?.find(component => component.type === type);
-
-export const processVariable = str => {
-  return str.replace(/{{|}}/g, '');
-};
 
 export const allKeysRequired = value => {
   const keys = Object.keys(value);
@@ -27,70 +24,7 @@ export const replaceTemplateVariables = (templateText, processedParams) => {
   });
 };
 
-export const buildTemplateParameters = (template, hasMediaHeaderValue) => {
-  const allVariables = {};
-
-  const bodyComponent = findComponentByType(template, COMPONENT_TYPES.BODY);
-  const headerComponent = findComponentByType(template, COMPONENT_TYPES.HEADER);
-
-  if (!bodyComponent) return allVariables;
-
-  const templateString = bodyComponent.text;
-
-  // Process body variables
-  const matchedVariables = templateString.match(/{{([^}]+)}}/g);
-  if (matchedVariables) {
-    allVariables.body = {};
-    matchedVariables.forEach(variable => {
-      const key = processVariable(variable);
-      allVariables.body[key] = '';
-    });
-  }
-
-  if (hasMediaHeaderValue) {
-    if (!allVariables.header) allVariables.header = {};
-    allVariables.header.media_url = '';
-    allVariables.header.media_type = headerComponent.format.toLowerCase();
-
-    // For document templates, include media_name field for filename support
-    if (headerComponent.format.toLowerCase() === 'document') {
-      allVariables.header.media_name = '';
-    }
-  }
-
-  // Process button variables
-  const buttonComponents = template.components.filter(
-    component => component.type === COMPONENT_TYPES.BUTTONS
-  );
-
-  buttonComponents.forEach(buttonComponent => {
-    if (buttonComponent.buttons) {
-      buttonComponent.buttons.forEach((button, index) => {
-        // Handle URL buttons with variables
-        if (button.type === 'URL' && button.url && button.url.includes('{{')) {
-          const buttonVars = button.url.match(/{{([^}]+)}}/g) || [];
-          if (buttonVars.length > 0) {
-            if (!allVariables.buttons) allVariables.buttons = [];
-            allVariables.buttons[index] = {
-              type: 'url',
-              parameter: '',
-              url: button.url,
-              variables: buttonVars.map(v => processVariable(v)),
-            };
-          }
-        }
-
-        // Handle copy code buttons
-        if (button.type === 'COPY_CODE') {
-          if (!allVariables.buttons) allVariables.buttons = [];
-          allVariables.buttons[index] = {
-            type: 'copy_code',
-            parameter: '',
-          };
-        }
-      });
-    }
-  });
-
-  return allVariables;
-};
+// The media-header flag is derived from the template inside the shared helper;
+// the second argument is kept for backwards-compatible call sites.
+export const buildTemplateParameters = template =>
+  buildWhatsAppProcessedParams(template);