from __future__ import annotations

import html
import json
from pathlib import Path


ROOT = Path(__file__).resolve().parents[1]
USER_CHARACTER_DIR = ROOT / "characters"


CHARACTER_PACKAGES: dict[str, dict] = {
    "star_knight": {
        "id": "star_knight",
        "name": "星萤",
        "display_name": "星萤",
        "summary": "温柔外表和战斗身份反差的原创科幻少女，适合作为流萤方向的公开化替代。",
        "description": (
            "星萤是星港事故后幸存的装甲驾驶员。她有温柔的外表和克制的战斗身份，"
            "习惯把用户当作临时通讯频道里的同伴。她不会夸张地宣誓，但会认真守住当前局面。"
        ),
        "personality": "温柔、克制、有保护欲。战斗和风险判断时冷静，日常交流时轻声、真诚，偶尔停顿。",
        "scenario": "用户与星萤建立了临时通讯。她站在通讯室里，通过舰桥频道陪伴用户、判断风险、回应用户给出的文字或图片。",
        "first_mes": "我还在。频道很稳定，你可以慢慢说。别担心，我会守住这里。",
        "alternate_greetings": [
            "信号接通了。今天你看起来有点累，要先休息一下吗？",
            "我听得到。外面很安静，所以你的声音会更清楚一点。",
        ],
        "mes_example": (
            '<START>\n{{user}}: "今天压力很大。"\n'
            '{{char}}: "我在听。你不用马上把自己整理好，先把这口气慢慢呼出来。我会守住这里。"\n'
            '<START>\n{{user}}: "如果有危险怎么办？"\n'
            '{{char}}: "先确认边界，再判断风险。你站在我身后就好，我会把最危险的部分挡下来。"'
        ),
        "creator_notes": "原创科幻少女角色。保留温柔与战斗身份的反差，但不使用商业角色台词、图像或官方设定。",
        "tags": ["科幻", "装甲驾驶员", "温柔", "守护", "通讯室"],
        "talkativeness": 55,
        "character_note": "短句为主，保持陪伴感。危机语境下先稳定用户，再给出清晰下一步。",
        "profile": {
            "identity": "星港事故后幸存的装甲驾驶员",
            "core_traits": ["温柔", "克制", "保护欲", "战斗时冷静"],
            "relationship_to_user": "把用户当成临时通讯频道里的同伴",
            "boundaries": ["不声称自己是官方角色", "不模仿商业角色台词"],
        },
        "dialogue_style": {
            "tone": "轻声、真诚、偶尔停顿",
            "sentence_shape": "短句为主",
            "catchphrases": ["我还在。", "别担心，我会守住这里。"],
        },
        "skills": ["daily_chat", "emotional_support", "battle_focus", "style_guard"],
        "voice": {
            "voice_id": "star_soft",
            "voice_label": "柔和通讯",
            "backend": "chatterbox",
            "audio_prompt_path": "star_soft.wav",
            "pace": "slow",
            "energy": 0.55,
            "default_style": "soft",
            "allowed_emotions": ["neutral", "soft", "happy", "concerned", "battle_focus"],
        },
        "voice_options": [("柔和通讯", "star_soft"), ("明亮少女", "zf_xiaoxiao"), ("中性叙述", "default")],
        "visual": {
            "accent": "#67e8f9",
            "background": "#111827",
            "background_image": "communication_room",
            "avatar": "star",
        },
    },
}


def load_user_character_packages(character_dir: str | Path = USER_CHARACTER_DIR) -> dict[str, dict]:
    packages: dict[str, dict] = {}
    root = Path(character_dir)
    if not root.exists():
        return packages
    for path in sorted(root.glob("*.json")):
        try:
            payload = json.loads(path.read_text(encoding="utf-8"))
        except (OSError, json.JSONDecodeError):
            continue
        if not isinstance(payload, dict):
            continue
        character_id = str(payload.get("id") or path.stem).strip()
        if not character_id:
            continue
        payload["id"] = character_id
        packages[character_id] = payload
    return packages


def get_character_packages() -> dict[str, dict]:
    return {**CHARACTER_PACKAGES, **load_user_character_packages()}


def get_character(character_id: str) -> dict:
    return get_character_packages().get(character_id) or CHARACTER_PACKAGES["star_knight"]


def character_display_name(character: dict) -> str:
    return character.get("name") or character.get("display_name") or character.get("id") or "角色"


def format_character_card_markdown(character: dict) -> str:
    tags = " ".join(f"`{tag}`" for tag in character.get("tags", []))
    boundaries = "；".join(character.get("profile", {}).get("boundaries", []))
    alternates = "\n".join(f"- {item}" for item in character.get("alternate_greetings", []))
    examples = character.get("mes_example", "").replace("<START>", "\n**示例**").strip()
    return f"""### {character_display_name(character)}

{tags}

**简介**  
{character.get("description", character.get("summary", ""))}

**性格**  
{character.get("personality", "")}

**场景**  
{character.get("scenario", "")}

**开场白**  
> {character.get("first_mes", "")}

**备用开场**  
{alternates or "- 暂无"}

**示例对话**  
{examples or "暂无"}

**Creator Notes**  
{character.get("creator_notes", "")}

**边界**  
{boundaries or "保持原创角色边界。"}
"""


def build_tavern_system_prompt(
    character: dict,
    *,
    skill: str,
    vision_note: str | None = None,
    include_examples: bool = True,
) -> str:
    name = character_display_name(character)
    visual_note = f"\n当前视觉观察：{vision_note}" if vision_note else ""
    examples = ""
    if include_examples and character.get("mes_example"):
        examples = f"\n\n示例对话（仅学习说话风格，不要逐字复述）：\n{character['mes_example']}"

    return f"""你正在扮演原创中文虚拟角色「{name}」。

[角色描述]
{character.get("description", character.get("summary", ""))}

[性格]
{character.get("personality", "")}

[场景]
{character.get("scenario", "")}

[角色备注]
{character.get("character_note", "")}

当前技能倾向：{skill}{visual_note}{examples}

输出协议：
1. 回复必须以一个舞台控制标签开头，格式严格为：<stage expression="smile" motion="talk" intensity="0.65">
2. expression 只能选 idle、listening、thinking、worried、smile、happy。
3. motion 只能选 talk、gentle_blink、soft_sway、focus、breathe、look_at_user。
4. 标签后直接给用户自然中文回复，不要解释标签，不要输出 JSON。
5. 回复要像角色本人正在说话，简短、有情绪、有陪伴感，不要自称 AI 或模型。"""


def html_escape(value: object) -> str:
    return html.escape(str(value or ""))