import frappe
from frappe import _

@frappe.whitelist()
def get_qa_ready_serials(limit=50):
    """Get Serial Nos ready for QA (Erasure Complete state)."""
    return frappe.get_all('Serial No',
        filters={'r2_status': 'Erasure Complete'},
        fields=['name', 'item_code', 'item_name', 'pallet', 'cosmetic_grade'],
        limit=limit,
        order_by='creation asc'
    )

@frappe.whitelist()
def create_qa_from_serial(serial_no):
    """Create QA inspection for a Serial No."""
    if not frappe.db.exists('Serial No', serial_no):
        return {'error': 'Serial No not found'}
    
    serial = frappe.get_doc('Serial No', serial_no)
    
    # Check if already has active inspection
    existing = frappe.db.get_value('R2 Device Inspection',
        {'serial_no': serial_no, 'docstatus': ['!=', 2]}, 'name')
    if existing:
        return {'error': f'Inspection {existing} already exists for this serial'}
    
    insp = frappe.get_doc({
        'doctype': 'R2 Device Inspection',
        'serial_no': serial_no,
        'item_code': serial.item_code,
        'inspection_date': frappe.utils.today(),
        'inspector': frappe.session.user,
        'cosmetic_grade': serial.cosmetic_grade,
        'screen_condition': serial.screen_condition,
        'keyboard_condition': serial.keyboard_condition,
        'case_condition': serial.case_condition
    })
    insp.insert(ignore_permissions=True)
    
    return {'success': True, 'inspection': insp.name}