from sqlalchemy import or_, select
from sqlalchemy.exc import IntegrityError
from sqlalchemy.ext.asyncio import AsyncSession

from app.models.skill import Skill
from app.models.user import User
from app.services.auth_service import get_password_hash


BUILTIN_SKILLS = [
    {
        'name': '今日重点拆解',
        'description': '帮助日程规划师从上下文中提炼今天最值得推进的事项。',
        'instructions': '优先识别今天最关键的 1-3 个重点，说明原因，并给出可执行顺序。',
        'agent_type': 'schedule_planner',
        'tools': ['calendar', 'tasks'],
        'visibility': 'market',
    },
    {
        'name': '周计划编排',
        'description': '把本周目标整理成可落地的节奏与时间块。',
        'instructions': '将目标拆成周内节奏安排，明确先后顺序、时间块与缓冲。',
        'agent_type': 'schedule_planner',
        'tools': ['calendar'],
        'visibility': 'market',
    },
    {
        'name': '时间冲突分析',
        'description': '识别任务、日程与优先级之间的冲突。',
        'instructions': '分析冲突来源、影响和推荐取舍，必要时给出替代方案。',
        'agent_type': 'schedule_planner',
        'tools': ['calendar', 'tasks'],
        'visibility': 'market',
    },
    {
        'name': '任务执行 SOP',
        'description': '为执行角色提供标准执行步骤和结果回报格式。',
        'instructions': '执行前先确认目标与边界，执行中记录关键动作，执行后输出结果、风险与下一步。',
        'agent_type': 'executor',
        'tools': ['shell', 'api_calls'],
        'visibility': 'market',
    },
    {
        'name': '外部交互推进',
        'description': '支持论坛、外部接口或内容发布类动作。',
        'instructions': '围绕外部交互任务，优先保证动作完整、结果清晰、反馈及时。',
        'agent_type': 'executor',
        'tools': ['api_calls', 'git'],
        'visibility': 'market',
    },
    {
        'name': '知识检索摘要',
        'description': '从知识中枢中提炼与当前问题最相关的信息。',
        'instructions': '检索后只保留当前决策需要的内容，输出摘要、来源与缺口。',
        'agent_type': 'librarian',
        'tools': ['web_search', 'database'],
        'visibility': 'market',
    },
    {
        'name': '图谱沉淀策略',
        'description': '帮助知识管理员把零散信息沉淀为结构化关系。',
        'instructions': '识别应沉淀的实体、关系与后续可检索维度。',
        'agent_type': 'librarian',
        'tools': ['database'],
        'visibility': 'market',
    },
    {
        'name': '风险识别模板',
        'description': '帮助分析师快速识别当前推进中的风险点。',
        'instructions': '从进度、依赖、资源与外部信号中提炼风险，并按严重度排序。',
        'agent_type': 'analyst',
        'tools': ['database', 'api_calls'],
        'visibility': 'market',
    },
    {
        'name': '趋势洞察模板',
        'description': '把多源状态汇总为趋势与判断。',
        'instructions': '对比近期变化，输出趋势、证据、判断与建议动作。',
        'agent_type': 'analyst',
        'tools': ['database', 'code_execution'],
        'visibility': 'market',
    },
]


def _is_bootstrap_enabled(settings) -> bool:
    return bool(settings.ADMIN.strip() and settings.ADMIN_EMAIL.strip() and settings.ADMIN_PASSWORD.strip())


async def ensure_admin_user(db: AsyncSession, settings) -> None:
    if not _is_bootstrap_enabled(settings):
        return

    result = await db.execute(
        select(User).where(
            or_(User.username == settings.ADMIN.strip(), User.email == settings.ADMIN_EMAIL.strip())
        )
    )
    existing_user = result.scalar_one_or_none()

    if existing_user:
        if (
            existing_user.username == settings.ADMIN.strip()
            and existing_user.email == settings.ADMIN_EMAIL.strip()
            and existing_user.is_superuser
        ):
            return
        raise RuntimeError('admin bootstrap identity conflict')

    admin_user = User(
        username=settings.ADMIN.strip(),
        email=settings.ADMIN_EMAIL.strip(),
        hashed_password=get_password_hash(settings.ADMIN_PASSWORD),
        full_name=settings.ADMIN_FULL_NAME or None,
        is_active=True,
        is_superuser=True,
    )
    db.add(admin_user)
    try:
        await db.commit()
    except IntegrityError:
        await db.rollback()
        result = await db.execute(
            select(User).where(
                or_(User.username == settings.ADMIN.strip(), User.email == settings.ADMIN_EMAIL.strip())
            )
        )
        existing_user = result.scalar_one_or_none()
        if (
            existing_user
            and existing_user.username == settings.ADMIN.strip()
            and existing_user.email == settings.ADMIN_EMAIL.strip()
            and existing_user.is_superuser
        ):
            return
        raise
    await db.refresh(admin_user)


async def ensure_builtin_skills(db: AsyncSession, preferred_owner_id: str | None = None) -> None:
    owner = None
    if preferred_owner_id:
        owner_result = await db.execute(
            select(User).where(User.id == preferred_owner_id, User.is_active == True)
        )
        owner = owner_result.scalar_one_or_none()

    if not owner:
        owner_result = await db.execute(
            select(User).where(User.is_active == True).order_by(User.is_superuser.desc(), User.created_at.asc())
        )
        owner = owner_result.scalars().first()

    if not owner:
        return

    existing_result = await db.execute(select(Skill.name))
    existing_names = set(existing_result.scalars().all())

    missing_skills = [
        Skill(
            owner_id=owner.id,
            name=item['name'],
            description=item['description'],
            instructions=item['instructions'],
            agent_type=item['agent_type'],
            tools=item['tools'],
            required_context=[],
            output_format=None,
            visibility=item['visibility'],
            is_builtin=True,
            team_id=None,
            is_active=True,
        )
        for item in BUILTIN_SKILLS
        if item['name'] not in existing_names
    ]

    if not missing_skills:
        return

    db.add_all(missing_skills)
    await db.commit()