cannaiq/CLAUDE.md

# Claude Guidelines for CannaiQ

## CURRENT ENVIRONMENT: PRODUCTION
**We are working in PRODUCTION only.** All database queries and API calls should target the remote production environment, not localhost. Use kubectl port-forward or remote DB connections as needed.

## PERMANENT RULES (NEVER VIOLATE)

### 1. NO DELETE
Never delete data, files, images, logs, or database rows. CannaiQ is a historical analytics system.

### 2. NO KILL
Never run `pkill`, `kill`, `killall`, or similar. Say "Please run `./stop-local.sh`" instead.

### 3. NO MANUAL STARTUP
Never start servers manually. Say "Please run `./setup-local.sh`" instead.

### 4. DEPLOYMENT AUTH REQUIRED
Never deploy unless user explicitly says: "CLAUDE — DEPLOYMENT IS NOW AUTHORIZED."

### 5. DB POOL ONLY
Never import `src/db/migrate.ts` at runtime. Use `src/db/pool.ts` for DB access.

### 6. K8S POD LIMITS — CRITICAL
**MAX 8 PODS** for `scraper-worker` deployment. NEVER EXCEED THIS.

**Pods vs Workers:**
- **Pod** = Kubernetes container instance (MAX 8)
- **Worker** = Concurrent task runner INSIDE a pod (controlled by `MAX_CONCURRENT_TASKS` env var)
- Formula: `8 pods × MAX_CONCURRENT_TASKS = total concurrent workers`

**Browser Task Memory Limits:**
- Each Puppeteer/Chrome browser uses ~400 MB RAM
- Pod memory limit is 2 GB
- **MAX_CONCURRENT_TASKS=3** is the safe maximum for browser tasks
- More than 3 concurrent browsers per pod = OOM crash

| Browsers | RAM Used | Status |
|----------|----------|--------|
| 3 | ~1.3 GB | Safe (recommended) |
| 4 | ~1.7 GB | Risky |
| 5+ | >2 GB | OOM crash |

**To increase throughput:** Add more pods (up to 8), NOT more concurrent tasks per pod.

```bash
# CORRECT - scale pods (up to 8)
kubectl scale deployment/scraper-worker -n dispensary-scraper --replicas=8

# WRONG - will cause OOM crashes
kubectl set env deployment/scraper-worker -n dispensary-scraper MAX_CONCURRENT_TASKS=10
```

**If K8s API returns ServiceUnavailable:** STOP IMMEDIATELY. Do not retry. The cluster is overloaded.

### 7. K8S REQUIRES EXPLICIT PERMISSION
**NEVER run kubectl commands without explicit user permission.**

Before running ANY `kubectl` command (scale, rollout, set env, delete, apply, etc.):
1. Tell the user what you want to do
2. Wait for explicit approval
3. Only then execute the command

This applies to ALL kubectl operations - even read-only ones like `kubectl get pods`.

---

## Quick Reference

### Database Tables
| USE THIS | NOT THIS |
|----------|----------|
| `dispensaries` | `stores` (empty) |
| `store_products` | `products` (empty) |
| `store_product_snapshots` | `dutchie_product_snapshots` |

### Key Files
| Purpose | File |
|---------|------|
| Dutchie client | `src/platforms/dutchie/client.ts` |
| DB pool | `src/db/pool.ts` |
| Payload fetch | `src/tasks/handlers/payload-fetch.ts` |
| Product refresh | `src/tasks/handlers/product-refresh.ts` |

### Dutchie GraphQL
- **Endpoint**: `https://dutchie.com/api-3/graphql`
- **Hash (FilteredProducts)**: `ee29c060826dc41c527e470e9ae502c9b2c169720faa0a9f5d25e1b9a530a4a0`
- **CRITICAL**: Use `Status: 'Active'` (not `null`)

### Frontends
| Folder | Domain | Build |
|--------|--------|-------|
| `cannaiq/` | cannaiq.co | Vite |
| `findadispo/` | findadispo.com | CRA |
| `findagram/` | findagram.co | CRA |
| `frontend/` | DEPRECATED | - |

---

## Deprecated Code

**DO NOT USE** anything in `src/_deprecated/`:
- `hydration/` - Use `src/tasks/handlers/`
- `scraper-v2/` - Use `src/platforms/dutchie/`
- `canonical-hydration/` - Merged into tasks

**DO NOT USE** `src/dutchie-az/db/connection.ts` - Use `src/db/pool.ts`

---

## Local Development

```bash
./setup-local.sh   # Start all services
./stop-local.sh    # Stop all services
```

| Service | URL |
|---------|-----|
| API | http://localhost:3010 |
| Admin | http://localhost:8080/admin |
| PostgreSQL | localhost:54320 |

---

## WordPress Plugin (ACTIVE)

### Plugin Files
| File | Purpose |
|------|---------|
| `wordpress-plugin/cannaiq-menus.php` | Main plugin (CannaIQ brand) |
| `wordpress-plugin/crawlsy-menus.php` | Legacy plugin (Crawlsy brand) |
| `wordpress-plugin/VERSION` | Version tracking |

### API Routes (Backend)
- `GET /api/v1/wordpress/dispensaries` - List dispensaries
- `GET /api/v1/wordpress/dispensary/:id/menu` - Get menu data
- Route file: `backend/src/routes/wordpress.ts`

### Versioning
Bump `wordpress-plugin/VERSION` on changes:
- Minor (x.x.N): bug fixes
- Middle (x.N.0): new features
- Major (N.0.0): breaking changes (user must request)

---

## Puppeteer Scraping (Browser-Based)

### Age Gate Bypass

Most dispensary sites require age verification. The browser scraper handles this automatically:

**Utility File**: `src/utils/age-gate.ts`

**Key Functions**:
- `setAgeGateCookies(page, url, state)` - Set cookies BEFORE navigation to prevent gate
- `hasAgeGate(page)` - Detect if page shows age verification
- `bypassAgeGate(page, state)` - Click through age gate if displayed
- `detectStateFromUrl(url)` - Extract state from URL (e.g., `-az-` → Arizona)

**Cookie Names Set**:
- `age_gate_passed: 'true'`
- `selected_state: '<state>'`
- `age_verified: 'true'`

**Bypass Methods** (tried in order):
1. Custom dropdown (shadcn/radix style) - Curaleaf pattern
2. Standard `<select>` dropdown
3. State button/card click
4. Direct "Yes"/"Enter" button

**Usage Pattern**:
```typescript
import { setAgeGateCookies, bypassAgeGate } from '../utils/age-gate';

// Set cookies BEFORE navigation
await setAgeGateCookies(page, menuUrl, 'Arizona');
await page.goto(menuUrl);

// If gate still appears, bypass it
await bypassAgeGate(page, 'Arizona');
```

**Note**: Deeply-Rooted (AZ) does NOT use age gate - good for preflight testing.

### Dual-Transport Preflight

Workers run BOTH preflight checks on startup:

| Transport | Test Method | Use Case |
|-----------|-------------|----------|
| `curl` | axios + proxy → httpbin.org | Fast API requests |
| `http` | Puppeteer + proxy + StealthPlugin | Anti-detect, browser fingerprint |

**HTTP Preflight Steps**:
1. Get proxy from pool (CrawlRotator)
2. Visit fingerprint.com demo (or amiunique.org fallback) to verify IP and anti-detect
3. Visit Dutchie embedded menu to establish session
4. Make GraphQL request from browser context

**Files**:
- `src/services/curl-preflight.ts`
- `src/services/puppeteer-preflight.ts`
- `migrations/084_dual_transport_preflight.sql`

**Task Method Column**: Tasks have `method` column ('curl' | 'http' | null):
- `null` = any worker can claim
- `'curl'` = only workers with passed curl preflight
- `'http'` = only workers with passed http preflight

Currently ALL crawl tasks require `method = 'http'`.

### Anti-Detect Fingerprint Distribution

Browser fingerprints are randomized using realistic market share distributions:

**Files**:
- `src/services/crawl-rotator.ts` - Device/browser selection
- `src/services/http-fingerprint.ts` - HTTP header fingerprinting

**Device Weights** (matches real traffic patterns):
| Device | Weight | Percentage |
|--------|--------|------------|
| Mobile | 62 | 62% |
| Desktop | 36 | 36% |
| Tablet | 2 | 2% |

**Allowed Browsers** (only realistic ones):
- Chrome (67% market share)
- Safari (20% market share)
- Edge (6% market share)
- Firefox (3% market share)

All other browsers are filtered out. Uses `intoli/user-agents` library for realistic UA generation.

**HTTP Header Fingerprinting**:
- DNT (Do Not Track): 30% probability of sending
- Accept headers: Browser-specific variations
- Header ordering: Matches real browser behavior (Chrome, Firefox, Safari, Edge each have unique order)

**curl-impersonate Binaries** (for curl transport):
| Browser | Binary |
|---------|--------|
| Chrome | `curl_chrome131` |
| Edge | `curl_chrome131` |
| Firefox | `curl_ff133` |
| Safari | `curl_safari17` |

These binaries mimic real browser TLS fingerprints to avoid detection.

---

## Bulk Task Workflow (Updated 2025-12-13)

### Overview
Tasks are created with `scheduled_for = NOW()` by default. Worker-level controls handle pacing - no task-level staggering needed.

### How It Works
```
1. Task created with scheduled_for = NOW()
2. Worker claims task only when scheduled_for <= NOW()
3. Worker runs preflight on EVERY task claim (proxy health check)
4. If preflight passes, worker executes task
5. If preflight fails, task released back to pending for another worker
6. Worker finishes task, polls for next available task
7. Repeat - preflight runs on each new task claim
```

### Worker-Level Throttling
These controls pace task execution - no staggering at task creation time:

| Control | Purpose |
|---------|---------|
| `MAX_CONCURRENT_TASKS` | Limits concurrent tasks per pod (default: 3) |
| Working hours | Restricts when tasks run (configurable per schedule) |
| Preflight checks | Ensures proxy health before each task |
| Per-store locking | Only one active task per dispensary |

### Key Points
- **Preflight is per-task, not per-startup**: Each task claim triggers a new preflight check
- **Worker controls pacing**: Tasks scheduled for NOW() but claimed based on worker capacity
- **Optional staggering**: Pass `stagger_seconds > 0` if you need explicit delays

### API Endpoints
```bash
# Create bulk tasks for specific dispensary IDs
POST /api/tasks/batch/staggered
{
  "dispensary_ids": [1, 2, 3, 4],
  "role": "product_refresh",      # or "product_discovery"
  "stagger_seconds": 0,           # default: 0 (all NOW)
  "platform": "dutchie",          # default: "dutchie"
  "method": null                  # "curl" | "http" | null
}

# Create bulk tasks for all stores in a state
POST /api/tasks/crawl-state/:stateCode
{
  "stagger_seconds": 0,           # default: 0 (all NOW)
  "method": "http"                # default: "http"
}
```

### Example: Tasks for AZ Stores
```bash
curl -X POST http://localhost:3010/api/tasks/crawl-state/AZ \
  -H "Content-Type: application/json"
```

### Related Files
| File | Purpose |
|------|---------|
| `src/tasks/task-service.ts` | `createStaggeredTasks()` method |
| `src/routes/tasks.ts` | API endpoints for batch task creation |
| `src/tasks/task-worker.ts` | Worker task claiming and preflight logic |

---

## Documentation

| Doc | Purpose |
|-----|---------|
| `backend/docs/CODEBASE_MAP.md` | Current files/directories |
| `backend/docs/_archive/` | Historical docs (may be outdated) |