This workflow follows the Gmail → HTTP Request recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
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{
"id": "zNx6ArX0ZtTTcfqp",
"meta": {
"templateCredsSetupCompleted": true
},
"name": "iOS Environment Config Sync Wizard: .env to Xcode",
"tags": [],
"nodes": [
{
"id": "252bad23-e84c-4e8b-bb4d-81aba9315782",
"name": "Check Changed Files",
"type": "n8n-nodes-base.code",
"position": [
420,
280
],
"parameters": {
"jsCode": "const webhookData = $input.first().json.body;\n\n// Log the entire webhookData for debugging\nconsole.log(webhookData);\n\n//const envFilePath = $node[\"SetConfiguration\"].json[\"envFilePath\"];\n\nconst envFilePath = \n$input.first().json.envFilePath\n// Ensure commits array exists and is not empty\nconst commits = webhookData.commits || [];\nconst changedFiles = commits.flatMap(commit => commit.added.concat(commit.modified, commit.removed));\n\n// Check if the repository exists before accessing full_name\nconst repositoryName = webhookData.repository ? webhookData.repository.full_name : 'Repository not found';\n\n// Check if the .env.staging file was changed\nconst envFileChanged = changedFiles.some(file => file.includes(envFilePath));\n\nreturn [\n {\n json: {\n repository: repositoryName,\n ref: webhookData.ref,\n after: webhookData.after,\n envFileChanged,\n changedFiles\n }\n }\n];\n"
},
"typeVersion": 1
},
{
"id": "7cb9824a-13ca-4ffc-9626-cbcf5983ddc4",
"name": "Perform Config Diff",
"type": "n8n-nodes-base.code",
"position": [
640,
280
],
"parameters": {
"jsCode": "// Only proceed if .env.staging was changed\nif (!$input.first().json.envFileChanged) {\n return [];\n}\n\n// Get configuration values\nconst configFiles = JSON.parse($node[\"SetConfiguration\"].json[\"configFiles\"]);\nconst targetBranch = $node[\"SetConfiguration\"].json[\"targetBranch\"];\nconst cacheInvalidationKeys = JSON.parse($node[\"SetConfiguration\"].json[\"cacheInvalidationKeys\"]);\nconst repository = $input.first().json.repository;\nconst commitSha = $input.first().json.after;\n\n// Simulate diff logic for iOS\nconst envChanges = {\n \"API_KEY\": \"new-api-key-value\",\n \"BUNDLE_VERSION\": \"2.0.0\",\n \"DEBUG_MODE\": \"true\"\n};\n\n// Determine which config files need updates\nconst configUpdates = [];\n\n// Check if cache invalidation is needed\nconst cacheInvalidationNeeded = cacheInvalidationKeys.some(key => envChanges.hasOwnProperty(key));\n\n// For each config file, determine what needs to be updated\nconfigFiles.forEach(file => {\n if (file === \"Info.plist\") {\n configUpdates.push({\n file,\n changes: [\n {\n key: \"CFBundleShortVersionString\",\n oldValue: \"1.0.0\",\n newValue: \"2.0.0\"\n },\n {\n key: \"API_KEY\",\n oldValue: \"old-api-key-value\",\n newValue: \"new-api-key-value\"\n }\n ]\n });\n } else if (file === \"Config.xcconfig\") {\n configUpdates.push({\n file,\n changes: [\n {\n key: \"API_KEY\",\n oldValue: \"old-api-key-value\",\n newValue: \"new-api-key-value\"\n },\n {\n key: \"BUNDLE_VERSION\",\n oldValue: \"1.0.0\",\n newValue: \"2.0.0\"\n }\n ]\n });\n }\n});\n\nreturn [\n {\n json: {\n repository,\n commitSha,\n targetBranch,\n envChanges,\n configUpdates,\n cacheInvalidationNeeded,\n cacheInvalidationKeys\n }\n }\n];"
},
"typeVersion": 1,
"alwaysOutputData": true
},
{
"id": "71c6a15a-acc5-487e-a28f-5ab7d6a06f65",
"name": "Create Branch Name",
"type": "n8n-nodes-base.code",
"position": [
860,
280
],
"parameters": {
"jsCode": "// Create a unique branch name for the config sync\nconst data = $input.first().json;\nconst timestamp = new Date().toISOString().replace(/[:.]/g, '-');\nconst branchName = `ios-config-sync/${timestamp}`;\n\nreturn [\n {\n json: {\n ...data,\n branchName\n }\n }\n];"
},
"typeVersion": 1
},
{
"id": "021ea454-007c-4e35-9396-749be82a454c",
"name": "Invalidate Cache",
"type": "n8n-nodes-base.code",
"position": [
1740,
280
],
"parameters": {
"jsCode": "// Check if cache invalidation is needed\nconst data = $input.first().json;\n\nif (!data.cacheInvalidationNeeded) {\n return [{ json: { ...data, cacheInvalidated: false } }];\n}\n\n// In a real implementation, you would invalidate the Xcode cache here\n// For iOS, this might involve cleaning derived data or triggering a cache cleanup\n\nreturn [\n {\n json: {\n ...data,\n cacheInvalidated: true,\n cacheInvalidationMessage: \"Xcode cache invalidation triggered for keys: \" + data.cacheInvalidationKeys.join(\", \")\n }\n }\n];"
},
"typeVersion": 1
},
{
"id": "db3f0bf4-59cf-41ff-baed-8dd994a4a9e1",
"name": "SetConfiguration",
"type": "n8n-nodes-base.set",
"position": [
200,
280
],
"parameters": {
"values": {
"string": [
{
"name": "envFilePath",
"value": ".env.staging"
},
{
"name": "configFiles",
"value": "[\"Info.plist\", \"Config.xcconfig\"]"
},
{
"name": "targetBranch",
"value": "main"
},
{
"name": "cacheInvalidationKeys",
"value": "[\"API_KEY\", \"BUNDLE_VERSION\", \"ENVIRONMENT\"]"
},
{
"name": "prLabels",
"value": "[\"config-sync\", \"automated\", \"ios\"]"
},
{
"name": "emailTo",
"value": "user@example.com"
}
]
},
"options": {}
},
"typeVersion": 1
},
{
"id": "8b34ddf0-c670-40c1-b699-b30da3fcc6af",
"name": "Prepare File and Merge Result",
"type": "n8n-nodes-base.code",
"position": [
1300,
280
],
"parameters": {
"jsCode": "// Prepare file updates for each iOS config file\nconst data = $input.first().json;\n\n// Extract repository name from the URL\n// Check if the URL exists\nconst url = data?.url;\nlet repoName = '';\nlet user = '';\nlet repoFullName = '';\nlet newBranch = '';\n// If the URL exists, extract the repository name and user\nif (url) {\n const urlParts = url.split(\"/repos/\")[1]?.split(\"/\");\n \n if (urlParts && urlParts.length > 1) {\n user = urlParts[0]; // Get the user (e.g., username)\n repoName = urlParts[1]; // Get the repository name (e.g., repo_app)\n repoFullName = `${user}/${repoName}`; // Full repository name (e.g., username/repo_app)\n }\n}\n\nconst targetBranch = $node[\"SetConfiguration\"].json[\"targetBranch\"];\n\n// Extract the new branch name from the `ref` field\nconst ref = data?.ref;\nif (ref) {\n // Remove \"refs/heads/\" to get just the branch name\n newBranch = ref.replace(\"refs/heads/\", \"\");\n}\n\nreturn [\n {\n json: {\n ...data,\n user,\n repoName,\n repoFullName,\n targetBranch,\n newBranch\n }\n }\n];\n"
},
"typeVersion": 1
},
{
"id": "52d9141f-0b0e-45d8-8930-3d535f99d834",
"name": "Send Email Notification",
"type": "n8n-nodes-base.gmail",
"position": [
1960,
280
],
"parameters": {
"sendTo": "={{ $node[\"SetConfiguration\"].json[\"emailTo\"] }}",
"message": "=Environment Configuration Sync Completed \\nRepository: {{ $json.head.repo.full_name }}\\nBranch: {{ $('Prepare File and Merge Result').item.json.newBranch }}\\nPR: #{{ $json.number }}\\n\\nSummary:\\n- {{ $json.changed_files }} iOS config files updated\\n- {{ $json.cacheInvalidated ? 'Xcode cache invalidation triggered' : 'No cache invalidation needed' }}\\n\\nChanges Made:\\n{{ $json.configUpdates.map(u => `\\n${u.file}:\\n${u.changes.map(c => ` - ${c.key}: ${c.oldValue} \u2192 ${c.newValue}`).join('\\n')}`).join('\\n') }}\\n\\nView PR: https://github.com/{{ $json.head.repo.full_name }}/pull/{{ $json.number }}\\n\\n---\\nThis email was automatically generated by the Environment Config Sync for iOS workflow.",
"options": {
"appendAttribution": false
},
"subject": "=iOS Config Sync Completed - {{ $json.head.repo.full_name }}",
"emailType": "text"
},
"credentials": {
"gmailOAuth2": {
"name": "<your credential>"
}
},
"typeVersion": 2.1
},
{
"id": "b218d17f-8fd4-437e-bf17-418fcd5edda6",
"name": "Create PR",
"type": "n8n-nodes-base.httpRequest",
"onError": "continueErrorOutput",
"position": [
1520,
280
],
"parameters": {
"url": "=https://api.github.com/repos/{{ $json.repoFullName }}/pulls",
"method": "POST",
"options": {},
"jsonBody": "={\n \"title\": \"Sync iOS Configurations\",\n \"body\": \"This PR syncs iOS configuration changes.\",\n \"head\": \"{{ $json.newBranch }}\",\n \"base\": \"{{ $json.targetBranch }}\",\n \"maintainer_can_modify\": true\n}\n",
"sendBody": true,
"sendHeaders": true,
"specifyBody": "json",
"authentication": "predefinedCredentialType",
"headerParameters": {
"parameters": [
{
"name": "Authorization",
"value": "Bearer ${token}"
},
{
"name": "Content-Type",
"value": "application/json"
}
]
},
"nodeCredentialType": "githubApi"
},
"credentials": {
"githubApi": {
"name": "<your credential>"
}
},
"typeVersion": 4.2,
"alwaysOutputData": true
},
{
"id": "a4946753-c20a-49cb-8414-ebb2786b16e1",
"name": "Create Branch",
"type": "n8n-nodes-base.httpRequest",
"onError": "continueErrorOutput",
"position": [
1080,
280
],
"parameters": {
"url": "=https://api.github.com/repos/{{ $json.repository }}/git/refs",
"method": "POST",
"options": {},
"jsonBody": "={\n \"ref\": \"refs/heads/{{ $json[\"branchName\"] }}\",\n \"sha\": \"{{ $json[\"commitSha\"] }}\"\n}\n",
"sendBody": true,
"sendHeaders": true,
"specifyBody": "json",
"authentication": "predefinedCredentialType",
"headerParameters": {
"parameters": [
{
"name": "Authorization",
"value": "Bearer ${token}"
},
{
"name": "Content-Type",
"value": "application/json"
}
]
},
"nodeCredentialType": "githubApi"
},
"credentials": {
"githubApi": {
"name": "<your credential>"
}
},
"typeVersion": 4.2
},
{
"id": "e36828b0-5520-4840-9864-633cb755511a",
"name": "Github Push Trigger",
"type": "n8n-nodes-base.githubTrigger",
"position": [
-20,
280
],
"parameters": {
"owner": {
"__rl": true,
"mode": "name",
"value": "username"
},
"events": [
"push"
],
"options": {
"insecureSSL": false
},
"repository": {
"__rl": true,
"mode": "list",
"value": "repo_app",
"cachedResultUrl": "",
"cachedResultName": "repo_app"
}
},
"credentials": {
"githubApi": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "7079fb26-5b6a-448e-8815-ab39231a2f8e",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-100,
660
],
"parameters": {
"width": 2400,
"height": 2120,
"content": "## Description\n\n### 1. Github Push Trigger\n- Purpose: Watches for push events on the username/repo repository.\n- What it does: When a commit is pushed, it captures details such as repository name, branch (ref), commit SHA (after), and changed files.\n- Key Output: Provides raw push payload data that other nodes consume for further processing.\n\n---\n\n### 2. SetConfiguration and Customisation\n- Purpose: Defines configurable parameters for the workflow.\n- What it does:\n- Specifies the environment file to monitor (.env.staging).\n- Lists config files to update (Info.plist, Config.xcconfig).\n- Sets the target branch (main).\n- Declares cache invalidation keys (API_KEY, BUNDLE_VERSION, ENVIRONMENT).\n- Adds PR labels (config-sync, automated, ios).\n- Configures email notification recipient (eg: ios-team@example.com).\n- Key Output: Passes configuration values downstream for diffing and PR creation.\n\n---\n\n### 3. Check Changed Files\n- Purpose: Detects if .env.staging was modified in the latest push.\n- What it does:\n- Parses commit payload.\n- Flattens all added/modified/removed files.\n- Checks whether .env.staging exists in the changed files.\n- Key Output: Returns envFileChanged = true/false plus the repository and commit details.\n\n---\n\n### 4. Perform Config Diff\n- Purpose: Analyzes differences between .env.staging and iOS configuration files.\n- What it does:\n- Extracts simulated environment changes (e.g., API_KEY, BUNDLE_VERSION).\n- Prepares configUpdates array describing old \u2192 new values for each file.\n- Determines if cache invalidation is required (based on keys).\n- Key Output: Provides structured diff results and flags whether cache invalidation is needed.\n\n---\n\n### 5. Create Branch Name\n- Purpose: Generates a unique branch name for the configuration changes.\n- What it does: Appends a timestamp to ios-config-sync/ (e.g., ios-config-sync/2025-09-01T12-00-00).\n- Key Output: New branch name (branchName) to be created in GitHub.\n\n---\n\n### 6. Create Branch\n- Purpose: Creates a new branch in the repository.\n- What it does: Calls GitHub API to create a reference (refs/heads/branchName) from the latest commit SHA.\n- Key Output: Confirmation of branch creation for downstream file updates.\n\n---\n\n### 7. Prepare File and Merge Result\n- Purpose: Prepares repository details for file updates and PR creation.\n- What it does:\n- Extracts user, repoName, and repoFullName from the repository URL.\n- Determines newBranch name from ref.\n- Prepares a merged JSON object with config updates and metadata.\n- Key Output: Supplies enriched repository details for PR step.\n\n---\n\n### 8. Create PR\n- Purpose: Opens a pull request in GitHub with the config changes.\n- What it does:\n- Uses GitHub API to create PR with title \u201cSync iOS Configurations\u201d.\n- Sets head = newBranch, base = main.\n- Attaches PR labels.\n- Key Output: Returns PR number (prNumber) and metadata for notifications.\n\n---\n\n### 9. Invalidate Cache\n- Purpose: Triggers Xcode build cache invalidation if required.\n- What it does:\n- Checks cacheInvalidationNeeded.\n- If true, marks cache as invalidated and logs message (e.g., \u201cXcode cache invalidation triggered for keys: API_KEY, BUNDLE_VERSION\u201d).\n- Key Output: Adds cacheInvalidated status and message to workflow data.\n\n---\n\n### 10. Send Email Notification\n- Purpose: Notifies stakeholders of completed config sync.\n- What it does:\n- Sends Gmail notification to the configured recipient.\n- Includes repository name, branch, PR number, number of updated config files, cache invalidation status, and detailed change log.\n- Adds GitHub PR link for quick access.\n- Key Output: Final communication to confirm sync completion.\n\n---"
},
"typeVersion": 1
},
{
"id": "d8620a5d-87e5-4174-978e-bbd37bce0a50",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-100,
120
],
"parameters": {
"width": 2400,
"height": 440,
"content": "## iOS Environment Config Sync Wizard: .env to Xcode"
},
"typeVersion": 1
}
],
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "f44fd78d-b44c-4689-adf7-f576535c6db5",
"connections": {
"Create PR": {
"main": [
[
{
"node": "Invalidate Cache",
"type": "main",
"index": 0
}
]
]
},
"Create Branch": {
"main": [
[
{
"node": "Prepare File and Merge Result",
"type": "main",
"index": 0
}
]
]
},
"Invalidate Cache": {
"main": [
[
{
"node": "Send Email Notification",
"type": "main",
"index": 0
}
]
]
},
"SetConfiguration": {
"main": [
[
{
"node": "Check Changed Files",
"type": "main",
"index": 0
}
]
]
},
"Create Branch Name": {
"main": [
[
{
"node": "Create Branch",
"type": "main",
"index": 0
}
]
]
},
"Check Changed Files": {
"main": [
[
{
"node": "Perform Config Diff",
"type": "main",
"index": 0
}
]
]
},
"Github Push Trigger": {
"main": [
[
{
"node": "SetConfiguration",
"type": "main",
"index": 0
}
]
]
},
"Perform Config Diff": {
"main": [
[
{
"node": "Create Branch Name",
"type": "main",
"index": 0
}
]
]
},
"Prepare File and Merge Result": {
"main": [
[
{
"node": "Create PR",
"type": "main",
"index": 0
}
]
]
}
}
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
githubApigmailOAuth2
Pro
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About this workflow
iOS Environment Config Sync Wizard: .env to Xcode. Uses gmail, httpRequest, githubTrigger. Event-driven trigger; 12 nodes.
Source: https://github.com/weblineindia/n8n-Automate-iOS-config-sync-.env-to-Xcode-with-GitHub-PRs-and-email/blob/main/main.json — original creator credit. Request a take-down →
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