230 lines
8.4 KiB
Python
230 lines
8.4 KiB
Python
import json
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import base64
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import uuid
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from pathlib import Path
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import aiosqlite
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from database.db import DB_PATH
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def parse_card_v2(data: dict) -> dict:
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inner = data.get("data", data)
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if isinstance(inner, str):
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inner = json.loads(inner)
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book = inner.get("character_book") or {}
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entries = book.get("entries", [])
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if isinstance(entries, dict):
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entries = list(entries.values())
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return {
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"card_id": (
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inner.get("name", "imported").lower().replace(" ", "_")[:48]
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+ "_"
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+ uuid.uuid4().hex[:8]
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),
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"name": inner.get("name", "Character"),
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"description": inner.get("description", ""),
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"personality": inner.get("personality", ""),
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"scenario": inner.get("scenario", ""),
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"first_mes": inner.get("first_mes", ""),
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"mes_example": inner.get("mes_example", ""),
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"appearance_tags": _extract_appearance(inner),
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"lorebook_json": json.dumps(entries, ensure_ascii=False),
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"raw_json": json.dumps(data if "data" in data else {"data": inner}, ensure_ascii=False),
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}
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def _extract_appearance(inner: dict) -> str:
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"""Extract booru-style appearance tags from character fields."""
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import re
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# fall back: scan description for visual keywords, skip world-building sentences
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desc = inner.get("description", "")
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appearance_keywords = re.findall(
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r'\b(?:'
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r'\w*hair|hair\w*|\w*eyes|eye\w*|\w*skin|skin\w*'
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r'|tall|short|slim|curvy|muscular|petite'
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r'|ears?|tail|horns?|wings?|cloak|dress|outfit|uniform|armor'
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r'|wolf\w*|cat\w*|fox\w*|elf\w*|demon\w*|angel\w*'
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r'|silver|blonde|black|white|red|blue|green|purple|pink|brown|golden'
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r')\b',
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desc, re.IGNORECASE
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)
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seen = []
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for kw in appearance_keywords:
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kw_lower = kw.lower()
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if kw_lower not in seen:
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seen.append(kw_lower)
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return ", ".join(seen[:20])
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def parse_png_card(file_bytes: bytes) -> dict | None:
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if not file_bytes.startswith(b"\x89PNG"):
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return None
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idx = 8 # skip PNG file signature
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while idx < len(file_bytes) - 12:
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length = int.from_bytes(file_bytes[idx : idx + 4], "big")
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chunk_type = file_bytes[idx + 4 : idx + 8]
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chunk_data = file_bytes[idx + 8 : idx + 8 + length]
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if chunk_type == b"tEXt":
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try:
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key, _, val = chunk_data.partition(b"\x00")
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if key in (b"chara", b"ccv3"):
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decoded = base64.b64decode(val).decode("utf-8")
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return parse_card_v2(json.loads(decoded))
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except Exception:
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pass
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elif chunk_type == b"iTXt":
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try:
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# iTXt: keyword \x00 compression_flag \x00 compression_method \x00 language \x00 translated_keyword \x00 text
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key, _, rest = chunk_data.partition(b"\x00")
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if key in (b"chara", b"ccv3"):
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# skip compression_flag, compression_method, language tag, translated keyword
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text = rest[2:].split(b"\x00", 2)[-1].decode("utf-8")
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# text may be base64 or raw JSON
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try:
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return parse_card_v2(json.loads(base64.b64decode(text).decode("utf-8")))
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except Exception:
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return parse_card_v2(json.loads(text))
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except Exception:
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pass
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idx += 12 + length
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return None
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def build_system_prompt(card: dict) -> str:
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parts = [
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f"You are {card['name']}. Stay in character.",
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f"Description: {card['description']}",
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f"Personality: {card['personality']}",
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f"Scenario: {card['scenario']}",
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]
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if card.get("mes_example"):
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parts.append(f"Example dialogue:\n{card['mes_example']}")
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parts.append("Reply only as the character. Do not add image tags.")
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return "\n\n".join(p for p in parts if p.split(": ", 1)[-1].strip())
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async def save_character(card: dict, lora_name: str = "", lora_weight: float = 0.8) -> dict:
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card_id = card["card_id"]
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async with aiosqlite.connect(DB_PATH) as db:
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await db.execute(
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"""INSERT OR REPLACE INTO characters
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(card_id, name, description, personality, scenario, first_mes,
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mes_example, raw_json, lora_name, lora_weight, appearance_tags, lorebook_json, avatar_path)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)""",
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(
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card_id,
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card["name"],
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card["description"],
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card["personality"],
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card["scenario"],
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card["first_mes"],
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card["mes_example"],
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card["raw_json"],
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lora_name,
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lora_weight,
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card.get("appearance_tags", ""),
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card["lorebook_json"],
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card.get("avatar_path", ""),
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),
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)
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await db.commit()
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return {**card, "lora_name": lora_name, "lora_weight": lora_weight}
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async def get_character(card_id: str) -> dict | None:
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async with aiosqlite.connect(DB_PATH) as db:
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db.row_factory = aiosqlite.Row
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async with db.execute(
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"SELECT * FROM characters WHERE card_id = ?", (card_id,)
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) as cur:
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row = await cur.fetchone()
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return dict(row) if row else None
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async def list_characters() -> list:
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async with aiosqlite.connect(DB_PATH) as db:
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db.row_factory = aiosqlite.Row
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async with db.execute(
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"SELECT card_id, name, description, lora_name FROM characters ORDER BY name"
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) as cur:
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rows = await cur.fetchall()
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return [dict(r) for r in rows]
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async def delete_character(card_id: str) -> bool:
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async with aiosqlite.connect(DB_PATH) as db:
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cur = await db.execute(
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"DELETE FROM characters WHERE card_id = ?", (card_id,)
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)
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await db.commit()
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return cur.rowcount > 0
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async def update_appearance_tags(card_id: str, appearance_tags: str):
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async with aiosqlite.connect(DB_PATH) as db:
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await db.execute(
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"UPDATE characters SET appearance_tags = ? WHERE card_id = ?",
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(appearance_tags, card_id),
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)
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await db.commit()
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async def update_character(card_id: str, fields: dict) -> bool:
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allowed = {"name", "description", "personality", "scenario", "first_mes",
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"mes_example", "appearance_tags", "lora_name", "lora_weight", "avatar_path"}
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updates = {k: v for k, v in fields.items() if k in allowed}
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if not updates:
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return False
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cols = ", ".join(f"{k} = ?" for k in updates)
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async with aiosqlite.connect(DB_PATH) as db:
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cur = await db.execute(
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f"UPDATE characters SET {cols} WHERE card_id = ?",
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(*updates.values(), card_id),
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)
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await db.commit()
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return cur.rowcount > 0
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async def import_card_file(content: bytes, filename: str, lora_name: str = "", lora_weight: float = 0.8) -> dict:
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if filename.lower().endswith(".png"):
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card = parse_png_card(content)
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if not card:
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raise ValueError("PNG does not contain character card metadata")
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# Use the PNG itself as avatar
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avatar_rel = _save_avatar_bytes(content, f"card_{card['card_id']}")
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card["avatar_path"] = avatar_rel
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else:
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card = parse_card_v2(json.loads(content.decode("utf-8")))
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saved = await save_character(card, lora_name=lora_name, lora_weight=lora_weight)
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persona_id = f"card_{saved['card_id']}"
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from services.personas import create_persona, get_persona
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existing = await get_persona(persona_id)
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if not existing:
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await create_persona(
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persona_id=persona_id,
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name=saved["name"],
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emoji="🎭",
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description=saved["description"][:80] or "Character card",
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prompt=build_system_prompt(saved),
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sd_enabled=True,
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lora_name=lora_name,
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lora_weight=lora_weight,
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appearance_tags=saved.get("appearance_tags", ""),
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avatar_path=saved.get("avatar_path", ""),
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)
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return saved
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def _save_avatar_bytes(png_bytes: bytes, prefix: str) -> str:
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avatars_dir = Path("static/avatars")
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avatars_dir.mkdir(parents=True, exist_ok=True)
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fname = f"{prefix}_{uuid.uuid4().hex[:8]}.png"
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path = avatars_dir / fname
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path.write_bytes(png_bytes)
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return f"avatars/{fname}"
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