from datetime import datetime, timezone

from fastapi.logger import logger
from sqlalchemy import and_


from shared.enums import AD_TYPE_LIST
from shared.constants import PAGE_SIZE
from modules.cms.ad.schemas import AdForm, AdStatusForm
from modules.cms.ad.models import Ad
from modules.cms.ad.repository import ad_repo
from modules.cms.ad_sort.models import AdSort
from config import FASTAPI_IMAGE_URL
from core.database import get_db_session
from core import R
from utils.rich_text import get_file_url, save_file, save_content
from utils.request import like_contains
from core.security import get_user_id


# 查询广告分页数据

def get_ad_page(request):
    db = get_db_session()
    # 页码
    page = int(request.query_params.get("pageNo", 1))
    # 每页数
    limit = int(request.query_params.get("pageSize", PAGE_SIZE))
    # 实例化查询对象
    query = ad_repo.filter(Ad.is_delete == 0)
    # 广告标题
    title = request.query_params.get('title')
    if title:
        query = query.filter(Ad.title.like(like_contains(title), escape='\\'))
    # 广告类型：1-图片 2-文字 3-视频 4-推荐
    type = request.query_params.get('type')
    if type:
        query = query.filter(Ad.type == type)
    # 广告状态
    status = request.query_params.get('status')
    if status:
        query = query.filter(Ad.status == status)
    # 排序
    query = query.order_by(Ad.sort.desc())
    # 记录总数
    count = query.count()
    # 分页查询
    ad_list = query.limit(limit).offset((page - 1) * limit).all()
    # 若当前页超出末页（数据被并发删除），自动回退到第一页
    if page > 1 and not ad_list:
        page = 1
        count = query.count()
        ad_list = query.limit(limit).offset(0).all()
    # 实例化结果
    result = []
    # 遍历数据源
    if len(ad_list) > 0:
        for item in ad_list:
            # 对象转字典
            data = item.to_dict()
            # 广告类型
            data['type_name'] = AD_TYPE_LIST.get(item.type)
            # 广告封面
            data['cover'] = get_file_url(item.cover) if item.cover else None
            # 查询广告位信息
            ad_sort = db.query(AdSort).filter(and_(AdSort.id == item.sort_id, AdSort.is_delete == 0)).first()
            # 广告位描述
            data['sort_desc'] = ad_sort.name + "=>" + str(ad_sort.loc_id) if ad_sort else None
            # 加入列表
            result.append(data)
    # 返回结果
    return R.ok(data=result, count=count)
# 根据广告ID查询详情

def get_ad_detail(ad_id):
    # 根据广告ID查询信息
    ad = ad_repo.get_by_id(ad_id)
    # 查询结果为空判断
    if not ad:
        return None
    # 对象转字典
    data = ad.to_dict()
    # 广告类型描述
    data['type_name'] = AD_TYPE_LIST.get(ad.type)
    # 广告封面
    data['cover'] = get_file_url(ad.cover) if ad.cover else ""
    # # 富文本内容
    # content = ad.content.replace("[IMG_URL]", FASTAPI_IMAGE_URL)
    # data['content'] = content
    # 返回结果
    return data
# 添加广告

def add_ad(request, data: AdForm):
    # 广告封面（cover 列 NOT NULL，非图片广告用空字符串占位）
    cover = data.cover or ""
    if data.type == 1 and cover:
        cover = save_file(cover, "ad")

    # # 广告标题
    # title = data.title
    # # 广告内容
    # content = data.content
    # # 处理富文本内容
    # content = save_content(content, title, "ad")

    # 表单数据赋值给对象并插入（cover 用处理后的文件路径，排除表单原值避免重复传参）
    ad_repo.create(**data.model_dump(exclude={'id', 'cover'}), cover=cover, create_user=get_user_id(request))
    # 返回结果
    return R.ok(msg="添加成功")


# 更新广告

def update_ad(request, data: AdForm):
    # 记录ID判空
    if not data.id or data.id <= 0:
        return R.failed("记录ID不能为空")
    # 根据ID查询记录
    ad = ad_repo.get_by_id(data.id)
    # 查询结果判空
    if not ad:
        return R.failed("记录不存在")

    # 广告封面（cover 列 NOT NULL，非图片广告用空字符串占位）
    cover = data.cover or ""
    if data.type == 1 and cover:
        cover = save_file(cover, "ad")

    # # 广告标题
    # title = data.title
    # # 广告内容
    # content = data.content
    # # 处理富文本内容
    # content = save_content(content, title, "ad")

    # 构造更新数据（排除 id）
    updData = data.model_dump(exclude={'id'})
    updData['cover'] = cover
    updData['update_user'] = get_user_id(request)
    updData['update_time'] = datetime.now(tz=timezone.utc)
    # 更新记录
    result = ad_repo.update(data.id, updData)
    # 提交数据
    # 返回结果
    if not result:
        return R.failed("更新失败")
    # 返回结果
    return R.ok(msg="更新成功")
# 删除广告

def delete_ad(ad_id):
    return ad_repo.batch_delete_r(ad_id)
# 设置状态

def update_ad_status(request, data: AdStatusForm):
    # 根据ID查询记录
    ad = ad_repo.get_by_id(data.id)
    # 查询结果判空
    if not ad:
        return R.failed("记录不存在")

    # 更新记录
    result = ad_repo.update(data.id, {
        "status": data.status,
        "update_user": get_user_id(request),
        "update_time": datetime.now(tz=timezone.utc)
    })
    # 提交数据
    if not result:
        return R.failed("设置失败")
    # 返回结果
    return R.ok(msg="设置成功")