445 lines
15 KiB
Python
445 lines
15 KiB
Python
import asyncio
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import json
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import re
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import subprocess
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import tempfile
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import uuid
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from datetime import datetime, timezone
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from pathlib import Path
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from config import (
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AGENT_TIMEOUT,
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CLAUDE_CLI,
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TEMPLATES_DIR,
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MAX_CONCURRENT_GENERATIONS,
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STORAGE_DIR,
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)
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from database import (
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update_guide,
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create_baustein,
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create_suggestions,
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delete_pending_suggestions,
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list_bausteine,
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update_baustein,
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)
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_semaphore = asyncio.Semaphore(MAX_CONCURRENT_GENERATIONS)
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_active_processes: dict[str, asyncio.subprocess.Process] = {}
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_cancelled: set[str] = set()
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async def cancel_guide(guide_id: str) -> bool:
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_cancelled.add(guide_id)
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process = _active_processes.get(guide_id)
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if process and process.returncode is None:
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process.kill()
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now = datetime.now(timezone.utc).isoformat()
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await update_guide(guide_id, status="error", progress=None, error_msg="Abgebrochen", updated_at=now)
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return True
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async def _set_progress(guide_id: str, progress: str) -> None:
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now = datetime.now(timezone.utc).isoformat()
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await update_guide(guide_id, progress=progress, updated_at=now)
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async def _run_claude(guide_id: str, prompt: str, timeout: int, tools: str | None = "Write,Bash,Read,WebSearch,WebFetch") -> tuple[int, str, str]:
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cmd = [CLAUDE_CLI, "-p"]
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if tools:
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cmd += ["--allowedTools", tools]
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cmd += ["--dangerously-skip-permissions"]
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process = await asyncio.create_subprocess_exec(
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*cmd,
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stdin=asyncio.subprocess.PIPE,
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stdout=asyncio.subprocess.PIPE,
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stderr=asyncio.subprocess.PIPE,
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)
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_active_processes[guide_id] = process
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try:
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try:
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stdout, stderr = await asyncio.wait_for(
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process.communicate(input=prompt.encode("utf-8")),
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timeout=timeout,
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)
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except asyncio.TimeoutError:
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process.kill()
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try:
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await asyncio.wait_for(process.wait(), timeout=5)
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except asyncio.TimeoutError:
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pass
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raise
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return process.returncode, stdout.decode("utf-8", errors="replace"), stderr.decode("utf-8", errors="replace")
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finally:
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_active_processes.pop(guide_id, None)
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async def _render_pdf(html_path: Path, pdf_path: Path) -> tuple[bool, str]:
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proc = await asyncio.create_subprocess_exec(
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"weasyprint", str(html_path), str(pdf_path),
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stdout=asyncio.subprocess.PIPE,
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stderr=asyncio.subprocess.PIPE,
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)
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_, stderr = await asyncio.wait_for(proc.communicate(), timeout=120)
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if proc.returncode != 0:
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return False, stderr.decode("utf-8", errors="replace")[:1000]
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return True, ""
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def _build_generator_prompt(topic: str, format_name: str, html_path: Path, instructions: str = "") -> str:
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spec = (TEMPLATES_DIR / "Format" / f"{format_name}.md").read_text(encoding="utf-8")
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reference = (TEMPLATES_DIR / "Referenz" / f"{format_name}.md").read_text(encoding="utf-8")
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extra = f"\n\nZUSÄTZLICHE ANWEISUNGEN VOM NUTZER:\n{instructions}\n" if instructions else ""
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return f"""Erstelle einen Lern-Guide zum Thema "{topic}" im Format "{format_name}".
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Recherchiere zuerst die aktuelle Version und aktuelle Fakten zu "{topic}" per Websuche, damit Versionsnummern und Angaben stimmen.
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Schreibe die HTML-Datei nach: {html_path}
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Schreibe NUR die HTML-Datei. Führe KEIN weasyprint aus, erzeuge KEINE PDF. Das übernimmt ein anderer Prozess.
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FORMAT-SPEZIFIKATION:
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{spec}
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REFERENZ-IMPLEMENTIERUNG (Stil-Vorlage, adaptiere für "{topic}"):
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{reference}
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{extra}"""
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def _build_rework_prompt(topic: str, format_name: str, html_path: Path, instructions: str) -> str:
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spec = (TEMPLATES_DIR / "Format" / f"{format_name}.md").read_text(encoding="utf-8")
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return f"""Überarbeite die bestehende HTML-Datei {html_path} für den "{format_name}" zum Thema "{topic}".
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Lies zuerst die aktuelle HTML-Datei mit dem Read-Tool.
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ANWEISUNGEN VOM NUTZER:
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{instructions}
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FORMAT-SPEZIFIKATION (muss weiterhin eingehalten werden):
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{spec}
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Schreibe die überarbeitete Version in dieselbe Datei: {html_path}
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Führe KEIN weasyprint aus, erzeuge KEINE PDF.
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"""
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def _build_fix_prompt(topic: str, format_name: str, html_path: Path, feedback: str) -> str:
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return f"""Die HTML-Datei {html_path} für den "{format_name}" zum Thema "{topic}" hat Probleme.
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FEEDBACK VOM PRÜFER:
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{feedback}
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Behebe die Probleme in der HTML-Datei {html_path}. Schreibe die korrigierte Version in dieselbe Datei.
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Führe KEIN weasyprint aus, erzeuge KEINE PDF.
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"""
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def _build_content_review_prompt(topic: str, format_name: str, html_path: Path) -> str:
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spec = (TEMPLATES_DIR / "Format" / f"{format_name}.md").read_text(encoding="utf-8")
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return f"""Prüfe den Inhalt der HTML-Datei {html_path} für den "{format_name}" zum Thema "{topic}".
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SCHRITT 1 — HTML-Datei lesen:
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Öffne die Datei {html_path} mit dem Read-Tool.
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SCHRITT 2 — Fakten per Websuche prüfen:
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Recherchiere mit WebSearch, ob Versionsnummern, Jahreszahlen und zentrale Fakten zu "{topic}" aktuell und korrekt sind.
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SCHRITT 3 — Vollständigkeit prüfen anhand dieser Spezifikation:
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{spec}
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Prüfkriterien:
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- Sind alle Pflicht-Kapitel/Sektionen vorhanden?
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- Stimmen Versionsnummern und Fakten?
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- Ist der Inhalt fachlich korrekt und aktuell?
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- Entspricht der Schwierigkeitsgrad dem Format?
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- Sind Pflicht-Elemente vorhanden (Cover, TOC, Recall-Boxen, Callouts, Code-Beispiele)?
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SCHRITT 4 — Antworte mit GENAU EINEM der folgenden Formate:
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Bei Bestehen:
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PASS
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Bei Nicht-Bestehen:
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FAIL
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- Problem 1
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- Problem 2
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- ...
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"""
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async def generate_guide(guide_id: str, topic: str, format_name: str, instructions: str = "") -> None:
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async with _semaphore:
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now = datetime.now(timezone.utc).isoformat()
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await update_guide(guide_id, status="generating", progress="Recherche…", updated_at=now)
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html_path = STORAGE_DIR / "html" / f"{guide_id}.html"
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pdf_path = STORAGE_DIR / "pdf" / f"{guide_id}.pdf"
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try:
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if guide_id in _cancelled:
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return
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current_step = "Generierung"
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current_timeout = AGENT_TIMEOUT
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# Step 1: Generator-Agent erstellt HTML
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await _set_progress(guide_id, "Generiere HTML…")
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gen_prompt = _build_generator_prompt(topic, format_name, html_path, instructions)
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returncode, stdout, stderr = await _run_claude(guide_id, gen_prompt, AGENT_TIMEOUT)
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if guide_id in _cancelled:
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return
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if returncode != 0:
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await _fail(guide_id, f"Generator-Fehler: {stderr[:1000]}")
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return
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if not html_path.exists():
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await _fail(guide_id, "HTML-Datei wurde nicht erstellt")
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return
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# Step 2: Inhalts-Review (1x, kein Loop)
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if guide_id in _cancelled:
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return
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await _set_progress(guide_id, "Prüfe Inhalt…")
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current_step = "Inhalts-Review"
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current_timeout = AGENT_TIMEOUT
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content_prompt = _build_content_review_prompt(topic, format_name, html_path)
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returncode, review_out, review_err = await _run_claude(guide_id, content_prompt, AGENT_TIMEOUT)
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if returncode != 0:
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await _fail(guide_id, f"Inhalts-Review-Fehler: {review_err[:1000]}")
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return
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review_text = review_out.strip()
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if not review_text.startswith("PASS"):
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if guide_id in _cancelled:
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return
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feedback = review_text.replace("FAIL", "").strip()
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await _set_progress(guide_id, "Korrigiere Inhalt…")
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current_step = "Inhalts-Korrektur"
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current_timeout = AGENT_TIMEOUT
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fix_prompt = _build_fix_prompt(topic, format_name, html_path, feedback)
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returncode, _, fix_err = await _run_claude(guide_id, fix_prompt, AGENT_TIMEOUT)
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if returncode != 0:
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await _fail(guide_id, f"Fix-Fehler: {fix_err[:1000]}")
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return
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# Step 3: PDF rendern
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if guide_id in _cancelled:
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return
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await _set_progress(guide_id, "Rendere PDF…")
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ok, err = await _render_pdf(html_path, pdf_path)
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if not ok:
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await _fail(guide_id, f"WeasyPrint-Fehler: {err}")
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return
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now = datetime.now(timezone.utc).isoformat()
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await update_guide(
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guide_id,
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status="done",
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progress=None,
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html_path=str(html_path),
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pdf_path=str(pdf_path),
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updated_at=now,
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)
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except asyncio.TimeoutError:
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await _fail(guide_id, f"Timeout bei {current_step} nach {current_timeout}s")
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except Exception as e:
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await _fail(guide_id, str(e)[:2000])
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finally:
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_active_processes.pop(guide_id, None)
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_cancelled.discard(guide_id)
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async def rework_guide(guide_id: str, topic: str, format_name: str, instructions: str) -> None:
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async with _semaphore:
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now = datetime.now(timezone.utc).isoformat()
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await update_guide(guide_id, status="generating", progress="Überarbeite…", updated_at=now)
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html_path = STORAGE_DIR / "html" / f"{guide_id}.html"
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pdf_path = STORAGE_DIR / "pdf" / f"{guide_id}.pdf"
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try:
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if guide_id in _cancelled:
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return
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current_step = "Überarbeitung"
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current_timeout = AGENT_TIMEOUT
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rework_prompt = _build_rework_prompt(topic, format_name, html_path, instructions)
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returncode, stdout, stderr = await _run_claude(guide_id, rework_prompt, AGENT_TIMEOUT)
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if guide_id in _cancelled:
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return
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if returncode != 0:
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await _fail(guide_id, f"Rework-Fehler: {stderr[:1000]}")
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return
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if not html_path.exists():
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await _fail(guide_id, "HTML-Datei wurde nicht erstellt")
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return
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await _set_progress(guide_id, "Rendere PDF…")
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ok, err = await _render_pdf(html_path, pdf_path)
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if not ok:
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await _fail(guide_id, f"WeasyPrint-Fehler: {err}")
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return
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now = datetime.now(timezone.utc).isoformat()
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await update_guide(
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guide_id, status="done", progress=None,
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html_path=str(html_path), pdf_path=str(pdf_path), updated_at=now,
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)
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except asyncio.TimeoutError:
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await _fail(guide_id, f"Timeout bei {current_step} nach {current_timeout}s")
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except Exception as e:
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await _fail(guide_id, str(e)[:2000])
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finally:
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_active_processes.pop(guide_id, None)
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_cancelled.discard(guide_id)
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async def _fail(guide_id: str, msg: str) -> None:
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now = datetime.now(timezone.utc).isoformat()
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await update_guide(guide_id, status="error", progress=None, error_msg=msg, updated_at=now)
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# --- Bausteine ---
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_suggestions_generating: set[str] = set()
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def is_suggestions_generating(topic: str) -> bool:
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return topic in _suggestions_generating
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def _parse_json(text: str):
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text = text.strip()
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text = re.sub(r"^```(?:json)?\s*", "", text)
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text = re.sub(r"\s*```$", "", text)
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return json.loads(text)
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def _build_suggestions_prompt(topic: str, html_paths: list[Path], existing_titles: list[str]) -> str:
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spec = (TEMPLATES_DIR / "Format" / "Baustein.md").read_text(encoding="utf-8")
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reference = (TEMPLATES_DIR / "Referenz" / "Baustein.md").read_text(encoding="utf-8")
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existing_list = "\n".join(f"- {t}" for t in existing_titles) if existing_titles else "(keine)"
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if html_paths:
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read_instructions = "\n".join(f"- Lies: {p}" for p in html_paths)
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guides_section = f"""SCHRITT 1 — Guides lesen:
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{read_instructions}
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"""
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else:
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guides_section = ""
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return f"""Schlage fundamentale Bausteine (Kernkonzepte) zum Thema "{topic}" vor.
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{guides_section}Bereits vorhandene Bausteine (NICHT erneut vorschlagen):
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{existing_list}
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FORMAT-SPEZIFIKATION:
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{spec}
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REFERENZ-BEISPIEL:
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{reference}
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Schlage bis zu 20 Bausteine vor. Antworte AUSSCHLIESSLICH mit einem JSON-Array. Jedes Element hat:
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- "title"
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- "description"
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- "purpose"
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- "examples": Array mit 4 Objekten {{"label": "...", "code": "..."}}
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Orientiere dich an der Spezifikation und Referenz. NUR das JSON-Array, kein weiterer Text.
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"""
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def _build_baustein_detail_prompt(topic: str, title: str) -> str:
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spec = (TEMPLATES_DIR / "Format" / "Baustein.md").read_text(encoding="utf-8")
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reference = (TEMPLATES_DIR / "Referenz" / "Baustein.md").read_text(encoding="utf-8")
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return f"""Generiere Details für den Baustein "{title}" im Kontext des Themas "{topic}".
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FORMAT-SPEZIFIKATION:
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{spec}
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REFERENZ-BEISPIEL:
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{reference}
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Antworte AUSSCHLIESSLICH mit einem JSON-Objekt mit den Feldern "description", "purpose", "examples".
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"examples" ist ein Array mit 4 Objekten {{"label": "...", "code": "..."}}.
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Orientiere dich an der Spezifikation und Referenz. Kein weiterer Text, nur das JSON.
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"""
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async def generate_suggestions(topic: str, html_paths: list[Path]) -> None:
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_suggestions_generating.add(topic)
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try:
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existing = await list_bausteine(topic)
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existing_titles = [b["title"] for b in existing]
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await delete_pending_suggestions(topic)
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prompt = _build_suggestions_prompt(topic, html_paths, existing_titles)
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tools = "Read" if html_paths else None
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returncode, stdout, stderr = await _run_claude("suggestions-" + topic, prompt, 180, tools=tools)
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if returncode != 0:
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return
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items = _parse_json(stdout)
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if not isinstance(items, list):
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return
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now = datetime.now(timezone.utc).isoformat()
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suggestions = []
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for item in items[:20]:
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suggestions.append({
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"id": str(uuid.uuid4()),
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"topic": topic,
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"title": item.get("title", ""),
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"description": item.get("description", ""),
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"purpose": item.get("purpose", ""),
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"example": json.dumps(item.get("examples", []), ensure_ascii=False),
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"status": "pending",
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"created_at": now,
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})
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if suggestions:
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await create_suggestions(suggestions)
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except Exception:
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pass
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finally:
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_suggestions_generating.discard(topic)
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async def generate_baustein_detail(baustein_id: str, topic: str, title: str) -> None:
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try:
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prompt = _build_baustein_detail_prompt(topic, title)
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returncode, stdout, stderr = await _run_claude("baustein-" + baustein_id, prompt, 60, tools=None)
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if returncode != 0:
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return
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data = _parse_json(stdout)
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if not isinstance(data, dict):
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return
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now = datetime.now(timezone.utc).isoformat()
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await update_baustein(
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baustein_id,
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description=data.get("description", ""),
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purpose=data.get("purpose", ""),
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example=json.dumps(data.get("examples", []), ensure_ascii=False),
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updated_at=now,
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)
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except Exception:
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pass
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