import os
import shutil
import yaml
import logging
import io
import re
from jmcomic import create_option
from utils import BASE_DIR, PDF_FINAL_DIR, sanitize_filename, manual_merge_pdf

# --- 日志捕获设置 (专用于 JMComic) ---
log_capture_string = io.StringIO()
ch = logging.StreamHandler(log_capture_string)
ch.setLevel(logging.INFO)
logger = logging.getLogger('jmcomic')
logger.addHandler(ch)
logger.setLevel(logging.INFO)

TEMP_YML = "jm_option_temp.yml"

# 🔴 改动1：新增 quality 参数
def run_jm_download(album_ids_str, auth_type, cookies_input, username_input, password_input, quality):
    # 1. 解析 ID 列表
    id_list = [x.strip() for x in re.split(r'[\s,，\n]+', album_ids_str) if x.strip()]
    
    if not id_list:
        yield None, "❌ 错误: 请至少输入一个本子 ID", "未检测到 ID"
        return

    # 2. 初始化环境
    log_capture_string.truncate(0)
    log_capture_string.seek(0)
    
    # 临时目录
    raw_download_dir = os.path.join(BASE_DIR, "raw_jm")

    # 3. 生成基础配置
    config = {
        'client': {'impl': 'api', 'retry_times': 3},
        'download': {
            'image': {'suffix': '.jpg', 'quality': 85}, # 这里的quality是下载时的jpg质量，和我们后期的压缩不同，保持默认即可
            'threading': {'batch_count': 5}
        },
        'dir_rule': {'base_dir': raw_download_dir},
    }

    if auth_type == "使用账号密码 (推荐)":
        if not username_input or not password_input:
            yield None, "❌ 错误: 请填写账号和密码", "参数错误"
            return
        config['client']['username'] = username_input
        config['client']['password'] = password_input

    with open(TEMP_YML, 'w', encoding='utf-8') as f:
        yaml.dump(config, f)

    # 4. 创建 Option
    try:
        option = create_option(TEMP_YML)
        if auth_type == "使用 Cookies (手动)" and cookies_input:
            option.call_once()
            option.headers['cookie'] = cookies_input.strip()
    except Exception as e:
        yield None, f"❌ 配置初始化失败: {e}", "初始化错误"
        return

    # 5. 循环下载
    success_files = []
    total_count = len(id_list)
    
    for index, album_id in enumerate(id_list):
        current_num = index + 1
        progress_str = f"({current_num}/{total_count})"
        
        # 清理旧图片
        if os.path.exists(raw_download_dir):
            shutil.rmtree(raw_download_dir)
        os.makedirs(raw_download_dir, exist_ok=True)
        
        yield success_files, f"🔄 {progress_str} 正在处理 ID: {album_id} ...", f"处理中 {current_num}/{total_count}"
        
        real_title = f"Unknown_{album_id}"
        
        try:
            # A. 获取信息
            client = option.build_jm_client()
            try:
                album_detail = client.get_album_detail(album_id)
                real_title = album_detail.title
            except Exception:
                pass 

            # B. 下载
            yield success_files, f"📥 {progress_str} 正在下载图片: {real_title}...", f"下载中 {current_num}/{total_count}"
            option.download_album(album_id)
            
            # C. 合并
            yield success_files, f"🔨 {progress_str} 正在压缩并合并 PDF (画质:{quality})...", f"合并中 {current_num}/{total_count}"
            
            safe_title = sanitize_filename(real_title)
            
            # 🔴 改动2：文件名加上画质标记
            quality_tag = "Original" if quality >= 100 else f"Q{quality}"
            final_pdf_name = f"[JM][{quality_tag}] {safe_title}.pdf"
            
            final_pdf_path = os.path.join(PDF_FINAL_DIR, final_pdf_name)
            
            try:
                # 🔴 改动3：传入 quality 参数
                manual_merge_pdf(raw_download_dir, final_pdf_path, quality=quality)
            except Exception as e:
                logger.error(f"合并PDF失败: {e}")
                yield success_files, f"❌ {progress_str} 合并失败: {e}", "合并出错"
                continue

            success_files.append(final_pdf_path)
            yield success_files, f"✅ {progress_str} 完成: {real_title}", f"完成 {current_num}/{total_count}"

        except Exception as e:
            import traceback
            traceback.print_exc()
            continue

    full_log = log_capture_string.getvalue()
    if not success_files:
        yield None, f"❌ 任务结束，无成功文件。\n日志:\n{full_log[-1000:]}", "全部失败"
    else:
        yield success_files, f"🎉 全部处理完毕！成功: {len(success_files)}个", "全部完成"