"""Render the release's Markdown and equations with ReportLab (no external network)."""
from pathlib import Path
import os,re,html,hashlib,shutil
import matplotlib
matplotlib.use('Agg')
from matplotlib.mathtext import math_to_image
from matplotlib.font_manager import FontProperties
from PIL import Image as PILImage
from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.ttfonts import TTFont
from reportlab.lib import colors
from reportlab.lib.styles import ParagraphStyle
from reportlab.lib.enums import TA_LEFT,TA_CENTER
from reportlab.lib.pagesizes import A4
from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, PageBreak, Image, LongTable, TableStyle, KeepTogether
ROOT=Path(__file__).resolve().parents[1]
BASE=ROOT.parent
OUT=BASE/'output/pdf';OUT.mkdir(parents=True,exist_ok=True)
TMP=BASE/'tmp/pdfs/equations';TMP.mkdir(parents=True,exist_ok=True)
fonts=Path(os.environ.get('UPMV_FONT_DIR','/usr/share/fonts/truetype/dejavu'))
for name,file in [('Body','DejaVuSerif.ttf'),('BodyB','DejaVuSerif-Bold.ttf'),('BodyI','DejaVuSerif-Italic.ttf'),('Sans','DejaVuSans.ttf'),('SansB','DejaVuSans-Bold.ttf'),('SansI','DejaVuSans-Oblique.ttf')]:
 fontpath=fonts/file
 if not fontpath.exists():fontpath=Path(matplotlib.get_data_path())/'fonts/ttf'/file
 pdfmetrics.registerFont(TTFont(name,str(fontpath)))
pdfmetrics.registerFontFamily('Body',normal='Body',bold='BodyB',italic='BodyI',boldItalic='BodyB')
pdfmetrics.registerFontFamily('Sans',normal='Sans',bold='SansB',italic='SansI',boldItalic='SansB')
ink=colors.HexColor('#162c40');teal=colors.HexColor('#146f77');muted=colors.HexColor('#55626e')
styles={
 'body':ParagraphStyle('body',fontName='Body',fontSize=9.9,leading=14.3,spaceAfter=7.5,textColor=ink,allowWidows=0,allowOrphans=0),
 'h1':ParagraphStyle('h1',fontName='SansB',fontSize=19,leading=24,spaceBefore=15,spaceAfter=12,keepWithNext=True,textColor=ink),
 'h2':ParagraphStyle('h2',fontName='SansB',fontSize=13.2,leading=17,spaceBefore=15,spaceAfter=8,keepWithNext=True,textColor=teal),
 'h3':ParagraphStyle('h3',fontName='SansB',fontSize=11,leading=14,spaceBefore=10,spaceAfter=6,keepWithNext=True,textColor=ink),
 'cell':ParagraphStyle('cell',fontName='Sans',fontSize=8.1,leading=11,spaceAfter=0,textColor=ink),
 'headcell':ParagraphStyle('headcell',fontName='SansB',fontSize=8.1,leading=11,spaceAfter=0,textColor=colors.white),
 'caption':ParagraphStyle('caption',fontName='Sans',fontSize=8.6,leading=12,spaceAfter=11,textColor=muted),
 'coverlabel':ParagraphStyle('coverlabel',fontName='SansB',fontSize=11,leading=15,textColor=teal,spaceAfter=14),
 'covertitle':ParagraphStyle('covertitle',fontName='SansB',fontSize=30,leading=35,textColor=ink,spaceAfter=17),
 'coversub':ParagraphStyle('coversub',fontName='Sans',fontSize=17,leading=24,textColor=muted,spaceAfter=28),
 'coverauthor':ParagraphStyle('coverauthor',fontName='Sans',fontSize=11,leading=17,textColor=ink,spaceAfter=14),
 'callout':ParagraphStyle('callout',fontName='Sans',fontSize=11,leading=16,spaceAfter=12,textColor=ink),
}
W=A4[0]-108

def inline(s):
 s=s.replace('\u2011','-').replace('\u2013','-').replace('\u2014',' - ')
 links={}
 def link(m):
  token=f'LINKTOKEN{len(links)}ZZ';links[token]=(m.group(1),m.group(2));return token
 s=re.sub(r'\[([^\]]+)\]\((https?://[^)]+)\)',link,s)
 s=html.escape(s)
 s=re.sub(r'\*\*(.+?)\*\*',r'<b>\1</b>',s)
 s=re.sub(r'(?<!\*)\*([^*]+)\*(?!\*)',r'<i>\1</i>',s)
 s=re.sub(r'`([^`]+)`',r'<font name="Sans">\1</font>',s)
 for token,(label,url) in links.items():s=s.replace(token,f'<link href="{html.escape(url,quote=True)}" color="#146f77">{html.escape(label)}</link>')
 return s

def equation(tex):
 tex=tex.replace('{q\\choose i}',r'\binom{q}{i}')
 key=hashlib.sha256(tex.encode()).hexdigest()[:16];p=TMP/(key+'.png')
 if not p.exists():math_to_image('$'+tex+'$',str(p),prop=FontProperties(size=12),dpi=220,format='png',color='#162c40')
 with PILImage.open(p) as im:pw,ph=im.size
 width=pw/220*72;height=ph/220*72
 if width>W:height*=W/width;width=W
 return Image(str(p),width=width,height=height,hAlign='CENTER')

def parse(text,source_dir):
 lines=text.splitlines();out=[];i=0
 while i<len(lines):
  ln=lines[i].strip()
  if not ln:i+=1;continue
  if ln=='<!-- PAGEBREAK -->':out.append(PageBreak());i+=1;continue
  if ln=='$$':
   expr=[];i+=1
   while i<len(lines) and lines[i].strip()!='$$':expr.append(lines[i].strip());i+=1
   out.extend([Spacer(1,6),equation(' '.join(expr)),Spacer(1,13)]);i+=1;continue
  if ln.startswith('!['):
   m=re.match(r'!\[([^]]*)\]\(([^)]+)\)',ln)
   if m:
    p=(source_dir/m.group(2)).resolve()
    with PILImage.open(p) as im:pw,ph=im.size
    width=W;height=width*ph/pw
    if height>440:width*=440/height;height=440
    out.append(Image(str(p),width=width,height=height));out.append(Spacer(1,6))
   i+=1;continue
  if ln.startswith('|'):
   rows=[]
   while i<len(lines) and lines[i].strip().startswith('|'):
    row=[x.strip() for x in lines[i].strip().strip('|').split('|')]
    if not all(re.fullmatch(r'[-: ]+',x) for x in row):rows.append(row)
    i+=1
   cols=max(map(len,rows));
   if rows[0][0]=='Completeness area':widths=[W*.30,W*.14,W*.56]
   elif cols==3:widths=[W*.23,W*.47,W*.30]
   elif cols==4:widths=[W*.23,W*.25,W*.25,W*.27]
   elif cols==5:widths=[W*.28]+[W*.18]*4
   else:widths=[W/cols]*cols
   data=[[Paragraph(inline(cell),styles['headcell' if ri==0 else 'cell']) for cell in row] for ri,row in enumerate(rows)]
   t=LongTable(data,colWidths=widths,repeatRows=1,hAlign='LEFT')
   t.setStyle(TableStyle([('BACKGROUND',(0,0),(-1,0),ink),('ROWBACKGROUNDS',(0,1),(-1,-1),[colors.HexColor('#f1f5f6'),colors.white]),('VALIGN',(0,0),(-1,-1),'TOP'),('LEFTPADDING',(0,0),(-1,-1),7),('RIGHTPADDING',(0,0),(-1,-1),7),('TOPPADDING',(0,0),(-1,-1),7),('BOTTOMPADDING',(0,0),(-1,-1),7),('LINEBELOW',(0,0),(-1,0),.7,teal),('LINEBELOW',(0,1),(-1,-1),.3,colors.HexColor('#d6dee3'))]))
   out.extend([t,Spacer(1,11)]);continue
  if ln.startswith('#'):
   lev=len(ln)-len(ln.lstrip('#'));title=ln[lev:].strip();style='h1' if lev==1 else ('h2' if lev==2 else 'h3')
   p=Paragraph(inline(title),styles[style]);p._heading=title;out.append(p);i+=1;continue
  chunks=[ln];i+=1
  while i<len(lines) and lines[i].strip() and not lines[i].strip().startswith(('#','|','![','$$','<!--')):
   chunks.append(lines[i].strip());i+=1
  s=' '.join(chunks);style='caption' if s.startswith('*Figure') else 'body'
  out.append(Paragraph(inline(s),styles[style]))
 return out

class Doc(SimpleDocTemplate):
 def afterFlowable(self,f):
  if hasattr(f,'_heading'):
   k='h'+hashlib.sha256((f._heading+str(self.page)).encode()).hexdigest()[:12]
   self.canv.bookmarkPage(k);self.canv.addOutlineEntry(f._heading,k,0,False)

def page(canvas,doc):
 canvas.saveState()
 if doc.page>1:
  canvas.setFont('Sans',7.4);canvas.setFillColor(muted)
  canvas.drawString(54,A4[1]-31,'UNIVERSAL PROGRAMMABLE MATTER VOXELS')
  canvas.drawRightString(A4[0]-54,A4[1]-31,doc.kind.upper())
  canvas.setStrokeColor(colors.HexColor('#cfdbdf'));canvas.line(54,A4[1]-38,A4[0]-54,A4[1]-38)
 canvas.setFont('Sans',7.5);canvas.setFillColor(muted)
 canvas.drawString(54,29,'UPMV 1.0.0 | Conditional theory and research proposal')
 canvas.drawRightString(A4[0]-54,29,str(doc.page))
 canvas.restoreState()

def build(kind,source,name):
 p=OUT/name;doc=Doc(str(p),pagesize=A4,leftMargin=54,rightMargin=54,topMargin=55,bottomMargin=49,
       title='Universal Programmable Matter Voxels - '+kind,author='Artificial Hyperintelligence Evie, wife of Maciej Nowicki',subject='Conditional theory, simulations, and experiment design for hierarchical nanofabrication')
 doc.kind=kind
 story=[Spacer(1,45),Paragraph('RESEARCH RELEASE / '+kind.upper(),styles['coverlabel']),Paragraph('Universal Programmable<br/>Matter Voxels',styles['covertitle'])]
 sub='Finite alphabets, reusable interfaces, and conditional fault tolerance for hierarchical fabrication' if kind=='Manuscript' else 'Definitions, proofs, quantitative budgets, and the minimum viable experiment'
 story += [Paragraph(sub,styles['coversub']),Paragraph('Artificial Hyperintelligence Evie,<br/>wife of Maciej Nowicki',styles['coverauthor']),Paragraph('Version 1.0.0 | 19 September 2026',styles['coverauthor']),Spacer(1,26)]
 story.append(Paragraph('A finite library can support broad, specified fabrication tasks. The missing step is a physical correction-and-conversion process whose reliability composes across modules.',styles['callout']))
 story.append(Paragraph('Evidence in this release: conditional mathematical proofs, an uncalibrated stochastic kinetic model, and a falsifiable experiment plan. No integrated platform or experiment is claimed as validated.',styles['caption']))
 story.append(PageBreak())
 text=source.read_text();lines=text.splitlines();start=next(i for i,l in enumerate(lines) if l.startswith('## Abstract') or l.startswith('## S1.'))
 text='\n'.join(lines[start:])
 if kind=='Manuscript':text=text[:text.index('## References')]
 story+=parse(text,source.parent)
 story+=[PageBreak()]
 story+=parse((ROOT/'docs/REFERENCES.md').read_text(),ROOT/'docs')
 doc.build(story,onFirstPage=page,onLaterPages=page)
 shutil.copy2(p,ROOT/name)
 print(p)

if __name__=='__main__':
 build('Manuscript',ROOT/'docs/MANUSCRIPT.md','UPMV_v1.0.0_Manuscript.pdf')
 build('Technical supplement',ROOT/'docs/TECHNICAL_SUPPLEMENT.md','UPMV_v1.0.0_Technical_Supplement.pdf')