"""PAAI ESC/POS 프린터 모듈"""
import json
from datetime import datetime
from escpos.printer import Network
from PIL import Image, ImageDraw, ImageFont

# 프린터 설정
PRINTER_IP = "192.168.0.174"
PRINTER_PORT = 9100
THERMAL_WIDTH = 576


def print_paai_result(pre_serial: str, patient_name: str, analysis: dict, kims_summary: dict) -> dict:
    """PAAI 분석 결과 인쇄"""
    try:
        # 이미지 생성
        img = create_receipt_image(pre_serial, patient_name, analysis, kims_summary)
        
        # 프린터 연결 및 출력
        p = Network(PRINTER_IP, port=PRINTER_PORT, timeout=15)
        p.image(img)
        p.text('\n\n\n')
        p.cut()
        
        return {'success': True, 'message': '인쇄 완료'}
    except Exception as e:
        return {'success': False, 'error': str(e)}


def create_receipt_image(pre_serial: str, patient_name: str, analysis: dict, kims_summary: dict) -> Image:
    """영수증 이미지 생성"""
    # 폰트
    try:
        font_title = ImageFont.truetype('malgun.ttf', 28)
        font_section = ImageFont.truetype('malgunbd.ttf', 20)
        font_normal = ImageFont.truetype('malgun.ttf', 18)
        font_small = ImageFont.truetype('malgun.ttf', 15)
    except:
        font_title = ImageFont.load_default()
        font_section = font_title
        font_normal = font_title
        font_small = font_title
    
    width = THERMAL_WIDTH
    padding = 20
    y = padding
    
    # 이미지 생성
    img = Image.new('RGB', (width, 1000), 'white')
    draw = ImageDraw.Draw(img)
    
    # 헤더
    draw.text((width//2, y), 'PAAI 복약안내', font=font_title, fill='black', anchor='mt')
    y += 40
    draw.line([(padding, y), (width-padding, y)], fill='black', width=1)
    y += 15
    
    # 환자 정보
    draw.text((padding, y), f'환자: {patient_name}', font=font_normal, fill='black')
    y += 25
    draw.text((padding, y), f'처방번호: {pre_serial}', font=font_small, fill='black')
    y += 20
    now_str = datetime.now().strftime("%Y-%m-%d %H:%M")
    draw.text((padding, y), f'출력: {now_str}', font=font_small, fill='black')
    y += 25
    draw.line([(padding, y), (width-padding, y)], fill='black', width=1)
    y += 15
    
    # 상호작용
    interaction_count = kims_summary.get('interaction_count', 0)
    has_severe = kims_summary.get('has_severe', False)
    
    if has_severe:
        draw.text((padding, y), '[주의] 중증 상호작용 있음!', font=font_section, fill='black')
    elif interaction_count > 0:
        draw.text((padding, y), f'약물 상호작용: {interaction_count}건', font=font_normal, fill='black')
    else:
        draw.text((padding, y), '상호작용 없음', font=font_normal, fill='black')
    y += 30
    
    # 처방 해석
    insight = analysis.get('prescription_insight', '')
    if insight:
        draw.text((padding, y), '[처방 해석]', font=font_section, fill='black')
        y += 28
        for line in wrap_text(insight, 40)[:3]:
            draw.text((padding, y), line, font=font_small, fill='black')
            y += 20
        y += 10
    
    # 주의사항
    cautions = analysis.get('cautions', [])
    if cautions:
        draw.text((padding, y), '[복용 주의사항]', font=font_section, fill='black')
        y += 28
        for i, c in enumerate(cautions[:3], 1):
            for line in wrap_text(f'{i}. {c}', 40)[:2]:
                draw.text((padding, y), line, font=font_small, fill='black')
                y += 20
        y += 10
    
    # 상담 포인트
    counseling = analysis.get('counseling_points', [])
    if counseling:
        draw.text((padding, y), '[상담 포인트]', font=font_section, fill='black')
        y += 28
        for i, c in enumerate(counseling[:2], 1):
            for line in wrap_text(f'{i}. {c}', 40)[:2]:
                draw.text((padding, y), line, font=font_small, fill='black')
                y += 20
        y += 10
    
    # 푸터
    y += 10
    draw.line([(padding, y), (width-padding, y)], fill='black', width=1)
    y += 15
    draw.text((width//2, y), '양구청춘약국 PAAI', font=font_small, fill='black', anchor='mt')
    
    return img.crop((0, 0, width, y + 30))


def wrap_text(text: str, max_chars: int = 40) -> list:
    """텍스트 줄바꿈"""
    lines = []
    words = text.split()
    current = ""
    
    for word in words:
        if len(current) + len(word) + 1 <= max_chars:
            current = current + " " + word if current else word
        else:
            if current:
                lines.append(current)
            current = word
    
    if current:
        lines.append(current)
    
    return lines if lines else [text[:max_chars]]


if __name__ == '__main__':
    # CLI 테스트
    import sys
    if len(sys.argv) > 1:
        pre_serial = sys.argv[1]
    else:
        pre_serial = '20260305000075'
    
    # 테스트 데이터
    analysis = {
        'prescription_insight': '테스트 처방입니다.',
        'cautions': ['주의사항 1', '주의사항 2'],
        'counseling_points': ['상담 포인트 1']
    }
    kims_summary = {'interaction_count': 0, 'has_severe': False}
    
    result = print_paai_result(pre_serial, '테스트환자', analysis, kims_summary)
    print(result)