"""诊断 / 对齐龙先生邀请种子与小程序 club_id。

用法：
  python manage.py diagnose_lsx_invite
  python manage.py diagnose_lsx_invite --align-to lsx
  python manage.py diagnose_lsx_invite --align-to-appid
"""
from django.core.management.base import BaseCommand, CommandError
from django.db import transaction

from jituan.models import Club
from users.business_models import User
from users.models import UserGuanshi, UserZuzhang

LSX_APPID = 'wx7ff90e9d024fcdb8'
SEED_UIDS = ('9910001', '9910002')
FRONTEND_EXPECT = 'lsx'


class Command(BaseCommand):
    help = '诊断龙先生种子邀请人 ClubID 与小程序是否一致，并可对齐'

    def add_arguments(self, parser):
        parser.add_argument(
            '--align-to',
            type=str,
            default='',
            help='把种子用户 ClubID 改成指定值（如 lsx）',
        )
        parser.add_argument(
            '--align-to-appid',
            action='store_true',
            help='按 wx_appid=龙先生 找到俱乐部，把种子 ClubID 对齐过去',
        )

    def handle(self, *args, **options):
        self.stdout.write(self.style.SUCCESS('=' * 60))
        self.stdout.write('前端龙先生小程序默认 X-Club-Id / CLUB_ID = lsx')
        self.stdout.write(f'龙先生 AppID = {LSX_APPID}')
        self.stdout.write('')

        clubs = list(Club.query.order_by('club_id'))
        self.stdout.write(f'库里俱乐部 {len(clubs)} 个：')
        target_by_app = None
        for c in clubs:
            mark = ''
            if c.club_id == FRONTEND_EXPECT:
                mark = ' ← 前端期望'
            if (c.wx_appid or '') == LSX_APPID:
                mark += ' ← AppID命中'
                target_by_app = c
            if '龙先生' in (c.name or ''):
                mark += ' ← 名称命中'
            self.stdout.write(
                f'  club_id={c.club_id!r} name={c.name!r} wx_appid={c.wx_appid or "(空)"}{mark}'
            )

        self.stdout.write('')
        self.stdout.write('种子用户：')
        for uid in SEED_UIDS:
            user = User.query.filter(UserUID=uid).first()
            if not user:
                self.stdout.write(self.style.WARNING(f'  {uid}: 不存在（还没跑 seed_lsx_invite_data？）'))
                continue
            role = []
            try:
                z = user.ZuzhangProfile
                role.append(f'组长码={z.yaoqingma}')
            except Exception:
                pass
            try:
                g = user.GuanshiProfile
                role.append(f'管事码={g.yaoqingma}')
            except Exception:
                pass
            club = (user.ClubID or '').strip()
            ok = club == FRONTEND_EXPECT
            line = f'  {uid}: ClubID={club or "(空)"}  {" | ".join(role) or "无身份"}'
            if ok:
                self.stdout.write(self.style.SUCCESS(line + '  ✓ 与前端 lsx 一致'))
            else:
                self.stdout.write(self.style.ERROR(
                    line + f'  ✗ 与前端 lsx 不一致 → 会报「邀请码不属于当前小程序俱乐部」'
                ))

        self.stdout.write('')
        self.stdout.write(self.style.WARNING(
            '结论：这是后端校验（invite_guard），不是前端邀请码输错。\n'
            '小程序发 X-Club-Id=lsx，邀请人 User.ClubID 必须也是 lsx。'
        ))

        align_to = (options.get('align_to') or '').strip()
        if options.get('align_to_appid'):
            if not target_by_app:
                raise CommandError(f'没有 wx_appid={LSX_APPID} 的俱乐部，无法对齐')
            align_to = target_by_app.club_id
            self.stdout.write(f'将按 AppID 对齐到 club_id={align_to!r}')

        if not align_to:
            self.stdout.write('')
            self.stdout.write('若要修复，任选其一：')
            self.stdout.write('  python manage.py diagnose_lsx_invite --align-to lsx')
            self.stdout.write('  python manage.py diagnose_lsx_invite --align-to-appid')
            self.stdout.write('然后前端 CLUB_ID 必须与种子 ClubID 相同。')
            self.stdout.write(self.style.SUCCESS('=' * 60))
            return

        if not Club.query.filter(club_id=align_to).exists():
            raise CommandError(f'目标俱乐部 {align_to!r} 不存在，请先在后台创建')

        with transaction.atomic():
            for uid in SEED_UIDS:
                user = User.query.filter(UserUID=uid).first()
                if not user:
                    self.stdout.write(self.style.WARNING(f'跳过不存在用户 {uid}'))
                    continue
                old = user.ClubID
                user.ClubID = align_to
                user.save(update_fields=['ClubID'])
                self.stdout.write(self.style.SUCCESS(
                    f'已更新 {uid}: ClubID {old!r} → {align_to!r}'
                ))

        self.stdout.write(self.style.SUCCESS(
            f'\n对齐完成。请确认小程序 config/club-config.js 的 CLUB_ID = {align_to!r}'
        ))
        self.stdout.write(self.style.SUCCESS('=' * 60))