175 lines
9.9 KiB
Python
175 lines
9.9 KiB
Python
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"""Full, version-aware page-family theme renderer.
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All content is escaped by Jinja's HTML autoescaping. Templates packaged with the
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application are trusted; uploaded declarative themes cannot supply executable Jinja.
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"""
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from __future__ import annotations
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import hashlib
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import datetime
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import json
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import re
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from html import escape
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from pathlib import Path
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from urllib.parse import quote
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from jinja2 import Environment, FileSystemLoader, select_autoescape
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from markupsafe import Markup
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from .core import sanitize, route_path
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THEMES=('automotive','industrial','corporate','minimal')
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ROOT=Path(__file__).resolve().parent.parent
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LOADER=Environment(loader=FileSystemLoader(str(ROOT/'themes')),autoescape=select_autoescape(['html','xml']))
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TITLES={'product':'产品中心','vehicle':'车型中心','post':'新闻资讯','case':'项目案例','brand':'品牌中心','service':'服务与解决方案'}
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def meta(item):
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try:
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raw=item.get('meta_json') or '{}'
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val=json.loads(raw) if isinstance(raw,str) else raw
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return val if isinstance(val,dict) else {}
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except (TypeError,ValueError):return {}
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def fields(item):
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v=meta(item).get('fields') or {}
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return v if isinstance(v,dict) else {}
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def text(item,key,limit=500):
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return str(item.get(key) or '')[:limit]
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def slug(value):
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# Conservative URL generation for newly derived pages; never rewrite imported URLs.
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raw=str(value).strip().casefold()
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ascii_slug=re.sub(r'[^a-z0-9-]+','-',raw).strip('-')[:54]
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return ascii_slug or ('term-'+hashlib.sha256(raw.encode()).hexdigest()[:12])
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def all_groups(records):
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return {typ:[e for e in records if e.get('type')==typ] for typ in TITLES}
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def categories(records):
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return sorted({str(fields(e).get('category') or '').strip() for e in records if e.get('type') in ('product','vehicle') and str(fields(e).get('category') or '').strip()},key=str.casefold)
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def brands(records):
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found={}
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for entry in records:
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if entry.get('type')=='brand':found[entry['title'].casefold()]={'name':entry['title'],'url':entry['route']}
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for entry in records:
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if entry.get('type') not in ('product','vehicle'):continue
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name=str(fields(entry).get('brand') or '').strip()
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if name and name.casefold() not in found:found[name.casefold()]={'name':name,'url':'/brands/'+slug(name)+'/'}
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return sorted(found.values(),key=lambda e:e['name'].casefold())
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def infer_kind(page,mode='detail'):
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path=page.get('route') or '/'
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typ=page.get('type') or 'page'
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explicit=str(meta(page).get('page_template') or '').strip().lower()
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if mode=='home' or path=='/':return 'home'
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if mode=='notfound':return 'notfound'
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if path=='/search/':return 'search'
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if path.startswith('/categories/'):return 'category'
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if mode=='listing' or explicit=='listing' or path in ('/products/','/brands/','/news/','/cases/','/product/','/post/','/brand/','/case/','/service/','/vehicle/'):
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return 'listing'
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if typ in ('product','vehicle'):return 'product'
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if typ=='post':return 'article'
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if typ=='brand':return 'brand'
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if typ=='case':return 'case'
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if typ=='service':return 'service'
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if explicit in ('home','about','contact','listing','product','article','brand','standard','notfound','category','case','service','faq'):return explicit
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if path.startswith('/about'):return 'about'
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if path.startswith('/contact'):return 'contact'
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if path.startswith('/faq'):return 'faq'
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if path.startswith('/services'):return 'service'
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return 'standard'
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def safe_href(route):
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if not isinstance(route,str):return '/'
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if route.startswith(('mailto:','tel:','https://','http://')):return route
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try:return route_path(route)
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except ValueError:return '/'
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def safe_image(value):
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if not value or not isinstance(value,str):return ''
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value=value.strip()
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if value.startswith('//') or any(c in value for c in ('<','>','"','\n','\r')):return ''
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if value.startswith(('https://','http://')):return value
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if value.startswith('/') or not value.startswith(('data:','javascript:')):return '/'+value.lstrip('/')
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return ''
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def media_gallery(page):
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"""Accept JSON gallery arrays or explicit semicolon/newline separated URLs."""
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attrs=fields(page)
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raw=attrs.get('gallery') or attrs.get('images') or meta(page).get('gallery') or []
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if isinstance(raw,str):
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try: raw=json.loads(raw)
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except (ValueError,TypeError):raw=re.split(r'[;\n]+',raw)
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if not isinstance(raw,list):raw=[]
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results=[]
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for item in [page.get('cover')]+raw:
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uri=item.get('url','') if isinstance(item,dict) else item
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safe=safe_image(uri)
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if safe and safe not in results:results.append(safe)
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if len(results)>=20:break
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return results
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def select_listing(page,kind,groups,all_records,requested):
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if kind=='category':
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category=text(page,'category') or text(page,'title')
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return [e for e in groups['product']+groups['vehicle'] if str(fields(e).get('category') or '').casefold()==category.casefold()]
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path=(page.get('route') or '').lower()
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title=text(page,'title').lower()
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template=meta(page)
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source=next((b.get('source') for b in template.get('blocks',[]) if isinstance(b,dict) and b.get('type')=='collection' and b.get('source')),'')
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category= 'post' if ('news' in path or '新闻' in title) else ('brand' if ('brand' in path or '品牌' in title) else ('case' if ('case' in path or '案例' in title) else ('service' if ('service' in path or '服务' in title) else 'product')))
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category=source if source in groups else category
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if requested and kind=='listing' and not source and path.startswith(('/product/','/post/','/brand/','/case/','/service/')):
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category={'/product/':'product','/post/':'post','/brand/':'brand','/case/':'case','/service/':'service/'} .get(path,category)
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if category=='product':return groups['product']+groups['vehicle']
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return groups.get(category,[])
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def make_context(site,page,records,mode='detail',listing_items=None):
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pg=dict(page or {})
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kind=infer_kind(pg,mode)
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groups=all_groups(records)
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listing=select_listing(pg,kind,groups,records,listing_items)
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if listing_items and mode=='listing' and not (pg.get('route') or '').startswith('/categories/'):
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listing=list(listing_items)
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detail_fields=fields(pg)
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spec=[{'label':str(k).replace('_',' ').capitalize(),'value':str(v)} for k,v in detail_fields.items() if isinstance(v,(str,int,float)) and v not in ('',None) and k not in ('brand','category','model','description','image','cover','url')]
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ownbrand=str(detail_fields.get('brand') or pg.get('title') or '').strip()
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related=[x for x in groups['product']+groups['vehicle'] if str(fields(x).get('brand') or '').casefold()==ownbrand.casefold()] if kind=='brand' else []
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settings=json.loads(site.get('settings_json') or '{}') if isinstance(site.get('settings_json'),str) else site.get('settings_json',{}) or {}
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nav=settings.get('nav') or [
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{'title':'首页','route':'/'},{'title':'产品','route':'/products/'},
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{'title':'品牌','route':'/brands/'},{'title':'新闻','route':'/news/'},
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{'title':'案例','route':'/cases/'},{'title':'关于','route':'/about/'},
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{'title':'联系','route':'/contact/'}]
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def nav_item(row,depth=0):
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output={'title':str(row.get('title',''))[:50],'route':safe_href(row.get('route') or '/')}
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children=row.get('children',[]) if depth<2 else []
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output['children']=[nav_item(c,depth+1) for c in children[:20] if isinstance(c,dict)] if isinstance(children,list) else []
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return output
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nav=[nav_item(x) for x in nav if isinstance(x,dict)][:20]
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assets={'categories':[{'name':c,'url':'/categories/'+slug(c)+'/'} for c in categories(records)],
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'brands':brands(records)}
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title=(pg.get('title') or site.get('name') or '')
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canonical=(pg.get('canonical') or (site.get('domain','').rstrip('/')+pg.get('route','/') if site.get('domain','').startswith(('http://','https://')) else ''))
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form_endpoint=settings.get('form_endpoint') or ''
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form_endpoint=form_endpoint if isinstance(form_endpoint,str) and form_endpoint.startswith('https://') and not any(x in form_endpoint for x in ('<','>','\"','\n')) else ''
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return {'year':datetime.datetime.now(datetime.timezone.utc).year,'theme_color':{'automotive':'#0e1c2c','industrial':'#113f59','corporate':'#f5f6fa','minimal':'#f8f7f3'}.get(site.get('theme'),'#ffffff'),'gallery':media_gallery(pg),'form_endpoint':form_endpoint,'site':site,'page':pg,'kind':kind,'records':records,'groups':groups,'listing':listing,
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'showcase':groups['product'][:6]+groups['vehicle'][:max(0,6-len(groups['product'][:6]))],
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'features':groups['service'][:3], 'stories':groups['post'][:3], 'cases':groups['case'][:3],
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'brands':assets['brands'],'categories':assets['categories'], 'nav':nav, 'specs':spec,
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'related':related,'fields':detail_fields,'content':Markup(sanitize(pg.get('body') or '')),
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'title':title, 'seo_title':pg.get('seo_title') or title,'seo_description':pg.get('seo_description') or pg.get('summary') or site.get('tagline') or '',
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'canonical':canonical,'safe_href':safe_href,'safe_image':safe_image,
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'fields_of':fields,'labels':TITLES,'footer_email':settings.get('email') or site.get('email') or '',
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'footer_text':settings.get('footer_text') or site.get('tagline') or '',
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'route':pg.get('route','/'),
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'pretty_type':TITLES.get(pg.get('type'),'内容'),
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'empty':len(listing)==0,
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}
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def render(theme,site,page,records,mode='detail',listing_items=None,blocks_html=''):
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if theme not in THEMES:raise ValueError('不是内置专业主题')
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ctx=make_context(site,page,records,mode,listing_items)
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ctx.update(custom_blocks=Markup(blocks_html or ''),has_custom=bool(blocks_html),noindex=(ctx['kind']=='notfound'),designer_replace=meta(page).get('layout_mode')=='replace')
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return LOADER.get_template(theme+'/pro.html').render(**ctx)
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