321 lines
7.8 KiB
Markdown
321 lines
7.8 KiB
Markdown
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# Пример Workflow для обработки рейсов с Base64 PDF
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## Структура Workflow
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```
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HTTP Request (FlightAware)
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↓
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HTTP Request (FlightRadar24)
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↓
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Code: Process Flights Data ← N8N_CODE_PROCESS_FLIGHTS_DATA.js
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↓
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Code: Prepare PDF Request ← N8N_FLIGHTS_PDF_BASE64_COMPLETE.js
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↓
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HTTP Request (Convert to PDF) ← Внешний сервис конвертации
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↓
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Code: Extract Base64 PDF ← N8N_FLIGHTS_PDF_BASE64_FULL.js
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↓
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[Использование base64 PDF]
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├─→ Save File
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├─→ Send Email
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├─→ Upload to S3
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└─→ Return in API Response
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```
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## Детальная настройка нод
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### 1. HTTP Request: FlightAware
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- **Method:** GET/POST (в зависимости от API)
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- **URL:** `https://flightaware.com/api/...`
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- **Authentication:** По необходимости
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### 2. HTTP Request: FlightRadar24
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- **Method:** GET/POST (в зависимости от API)
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- **URL:** `https://flightradar24.com/api/...`
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- **Authentication:** По необходимости
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### 3. Code: Process Flights Data
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**Код:** Скопируйте из `N8N_CODE_PROCESS_FLIGHTS_DATA.js`
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**Входные данные:**
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- Два элемента из предыдущих HTTP Request нод
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**Выходные данные:**
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```json
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{
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"html": "<!DOCTYPE html>...",
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"flights": [...],
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"flights_count": 2,
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"sources": {...},
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"generated_at": "2026-01-14T..."
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}
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```
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### 4. Code: Prepare PDF Request
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**Код:** Скопируйте из `N8N_FLIGHTS_PDF_BASE64_COMPLETE.js`
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**Настройка:**
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- Замените `PDF_SERVICE_URL` на URL вашего сервиса
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- Замените `PDF_API_KEY` на ваш API ключ
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**Выходные данные:**
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```json
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{
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"http_method": "POST",
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"http_url": "https://api.htmlpdfapi.com/v1/pdf",
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"http_headers": {...},
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"http_body": "{...}",
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"html_length": 12345,
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"flights_count": 2
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}
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```
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### 5. HTTP Request: Convert to PDF
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**Настройка:**
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- **Method:** `{{ $json.http_method }}`
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- **URL:** `{{ $json.http_url }}`
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- **Authentication:** По необходимости (через Headers)
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- **Headers:**
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```json
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{{ $json.http_headers }}
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```
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- **Body:**
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```json
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{{ $json.http_body }}
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```
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- **Response Format:** `JSON` или `Binary` (зависит от сервиса)
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**Пример для htmlpdfapi.com:**
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```json
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{
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"method": "POST",
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"url": "https://api.htmlpdfapi.com/v1/pdf",
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"headers": {
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"Content-Type": "application/json",
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"Authorization": "Bearer YOUR_API_KEY"
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},
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"body": {
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"html": "{{ $('Code: Process Flights Data').first().json.html }}",
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"options": {
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"format": "A4",
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"printBackground": true
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},
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"base64": true
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}
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}
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```
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### 6. Code: Extract Base64 PDF
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**Код:** Скопируйте из `N8N_FLIGHTS_PDF_BASE64_FULL.js`
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**Входные данные:**
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- Ответ от HTTP Request ноды (JSON или Binary)
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**Выходные данные:**
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```json
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{
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"pdf_base64": "JVBERi0xLjQKJeLjz9MKMyAwIG9iago8PC9MZW5ndGg...",
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"pdf_size_bytes": 123456,
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"pdf_size_mb": "0.12",
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"success": true,
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"source": "json_response"
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}
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```
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## Использование base64 PDF
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### Вариант A: Сохранение в файл
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**Code Node:**
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```javascript
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const base64 = $('Code: Extract Base64 PDF').first().json.pdf_base64;
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const filename = `flights-report-${new Date().toISOString().split('T')[0]}.pdf`;
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// Конвертируем base64 в binary
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const pdfBuffer = Buffer.from(base64, 'base64');
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return [{
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binary: {
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data: pdfBuffer,
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fileName: filename,
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mimeType: 'application/pdf'
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},
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json: {
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filename: filename,
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size_bytes: pdfBuffer.length
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}
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}];
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```
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Затем используйте ноду **Write Binary File** или **Save to S3**.
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### Вариант B: Отправка по Email
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**Code Node:**
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```javascript
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const base64 = $('Code: Extract Base64 PDF').first().json.pdf_base64;
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const pdfBuffer = Buffer.from(base64, 'base64');
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return [{
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json: {
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to: 'recipient@example.com',
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subject: 'Отчёт о рейсах',
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text: 'Во вложении отчёт о рейсах.',
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attachments: [{
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filename: 'flights-report.pdf',
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content: pdfBuffer,
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contentType: 'application/pdf'
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}]
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}
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}];
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```
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Затем используйте ноду **Email Send**.
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### Вариант C: Возврат в API Response
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**Code Node (перед Response нодой):**
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```javascript
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const base64 = $('Code: Extract Base64 PDF').first().json.pdf_base64;
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const processedData = $('Code: Process Flights Data').first().json;
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return [{
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json: {
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success: true,
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flights_count: processedData.flights_count,
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pdf_base64: base64,
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pdf_size_mb: $('Code: Extract Base64 PDF').first().json.pdf_size_mb,
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generated_at: processedData.generated_at
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}
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}];
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```
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### Вариант D: Загрузка в S3/Nextcloud
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**Code Node:**
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```javascript
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const base64 = $('Code: Extract Base64 PDF').first().json.pdf_base64;
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const pdfBuffer = Buffer.from(base64, 'base64');
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const filename = `flights-report-${new Date().toISOString().split('T')[0]}.pdf`;
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return [{
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binary: {
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data: pdfBuffer,
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fileName: filename,
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mimeType: 'application/pdf'
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},
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json: {
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bucket: 'your-bucket',
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key: `reports/${filename}`,
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contentType: 'application/pdf'
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}
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}];
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```
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Затем используйте ноду **S3 Upload** или **Nextcloud Upload**.
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## Альтернативные сервисы конвертации
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### 1. htmlpdfapi.com
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```javascript
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{
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"url": "https://api.htmlpdfapi.com/v1/pdf",
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"method": "POST",
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"headers": {
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"Content-Type": "application/json",
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"Authorization": "Bearer YOUR_API_KEY"
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},
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"body": {
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"html": "{{ HTML }}",
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"base64": true
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}
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}
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```
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### 2. pdfshift.io
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```javascript
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{
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"url": "https://api.pdfshift.io/v3/convert/pdf",
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"method": "POST",
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"headers": {
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"Content-Type": "application/json",
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"Authorization": "Basic " + Buffer.from("api:YOUR_API_KEY").toString("base64")
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},
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"body": {
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"source": "{{ HTML }}",
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"format": "A4"
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}
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}
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// Ответ содержит base64 в поле "pdf"
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```
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### 3. api2pdf.com
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```javascript
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{
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"url": "https://v2.api2pdf.com/chrome/html",
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"method": "POST",
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"headers": {
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"Authorization": "YOUR_API_KEY",
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"Content-Type": "application/json"
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},
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"body": {
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"html": "{{ HTML }}",
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"inlinePdf": true,
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"fileName": "flights-report.pdf"
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}
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}
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// Ответ содержит base64 в поле "pdf"
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```
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### 4. Self-hosted: Gotenberg
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```javascript
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{
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"url": "http://your-gotenberg-server:3000/forms/chromium/convert/html",
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"method": "POST",
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"headers": {
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"Content-Type": "multipart/form-data"
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},
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"body": {
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"files": [{
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"name": "index.html",
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"content": "{{ HTML }}"
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}]
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}
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}
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// Ответ - binary PDF, конвертируем в base64
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```
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## Отладка
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### Проверка HTML
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```javascript
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const html = $('Code: Process Flights Data').first().json.html;
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console.log('HTML length:', html.length);
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console.log('HTML preview:', html.substring(0, 500));
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```
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### Проверка base64
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```javascript
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const base64 = $('Code: Extract Base64 PDF').first().json.pdf_base64;
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console.log('Base64 length:', base64.length);
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console.log('Base64 preview:', base64.substring(0, 100));
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```
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### Проверка размера PDF
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```javascript
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const data = $('Code: Extract Base64 PDF').first().json;
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console.log('PDF size:', data.pdf_size_mb, 'MB');
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console.log('PDF size bytes:', data.pdf_size_bytes);
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```
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## Обработка ошибок
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Добавьте IF Node после HTTP Request для проверки успешности:
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```javascript
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// IF Node: Check PDF Conversion Success
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{{ $json.success === true }}
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```
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Если ошибка - отправьте уведомление или сохраните HTML для ручной конвертации.
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