"""基本信息阶段的卡片与校验：个人信息（PERSONAL_INFO）与意向职位（TARGET_POSITION）。

独立成模块以控制 fsm.py 行数；fsm.py 通过函数内 import 调用，避免循环依赖。
"""

from __future__ import annotations

from typing import Any

from .fsm import FSMError, Transition, assistant_turn, component
from .models import ComposerMode, Stage
from .validators import valid_email, valid_url

PERSONAL_INFO_FIELDS: list[dict[str, Any]] = [
    {"key": "name", "label": "姓名", "kind": "text", "required": True},
    {"key": "email", "label": "邮箱", "kind": "text", "required": True},
    {"key": "city", "label": "所在地", "kind": "text", "required": False},
    {"key": "portfolio_url", "label": "作品集链接", "kind": "text", "required": False},
]

TARGET_POSITION_FIELDS: list[dict[str, Any]] = [
    {"key": "target_position", "label": "意向职位", "kind": "text", "required": True},
]
TARGET_POSITION_MAJOR_FIELDS: list[dict[str, Any]] = [
    {"key": "major", "label": "专业", "kind": "text", "required": True},
    {"key": "interests", "label": "感兴趣的方向", "kind": "text", "required": False},
]


def personal_info_transition(profile: dict[str, Any]) -> Transition:
    return Transition(
        Stage.PERSONAL_INFO,
        profile,
        assistant_turn(
            "先填写你的个人信息，姓名和邮箱将用于简历抬头。",
            [
                component(
                    "RecordFields",
                    title="填写个人信息",
                    fields=PERSONAL_INFO_FIELDS,
                    show_description=False,
                    skippable=False,
                )
            ],
            mode=ComposerMode.UI_ONLY,
        ),
    )


def validate_personal_info(payload: dict[str, Any]) -> dict[str, Any]:
    """姓名和邮箱必填；所在地和作品集链接选填。"""
    name = str(payload.get("name") or "").strip()
    email = str(payload.get("email") or "").strip()
    city = str(payload.get("city") or "").strip()
    portfolio_url = str(payload.get("portfolio_url") or "").strip()
    missing: list[str] = []
    if not name or len(name) > 64:
        missing.append("name")
    if not valid_email(email):
        missing.append("email")
    if portfolio_url and not valid_url(portfolio_url):
        missing.append("portfolio_url")
    if missing:
        raise FSMError(
            "invalid_personal_info",
            "请填写姓名、有效邮箱，并确认作品集链接以 http(s):// 开头",
            status_code=422,
            missing_fields=missing,
        )
    return {
        "name": name,
        "email": email,
        "city": city or None,
        "portfolio_url": portfolio_url or None,
    }


def target_position_transition(profile: dict[str, Any]) -> Transition:
    return Transition(
        Stage.TARGET_POSITION,
        profile,
        assistant_turn(
            "先确认你是否已有明确的意向职位。",
            [
                component(
                    "ChoiceChips",
                    title="意向职位",
                    description="已有方向可直接填写；暂不确定时，先根据专业获得职位建议。",
                    options=[
                        {"value": "known", "label": "我有明确意向职位"},
                        {"value": "explore", "label": "暂不确定，想先获取建议"},
                    ],
                    skippable=False,
                )
            ],
            mode=ComposerMode.UI_ONLY,
        ),
    )


def target_position_input_transition(profile: dict[str, Any]) -> Transition:
    return Transition(
        Stage.TARGET_POSITION,
        profile,
        assistant_turn(
            "填写一个意向职位，后续的优化和技能推荐会参考它。",
            [component("RecordFields", title="填写意向职位", fields=TARGET_POSITION_FIELDS, show_description=False)],
            mode=ComposerMode.UI_ONLY,
        ),
    )


def target_position_major_transition(profile: dict[str, Any]) -> Transition:
    return Transition(
        Stage.TARGET_POSITION_MAJOR,
        profile,
        assistant_turn(
            "填写专业和可选兴趣方向，我会给出可选择的职位建议。",
            [component("RecordFields", title="专业与方向", fields=TARGET_POSITION_MAJOR_FIELDS, show_description=False)],
            mode=ComposerMode.UI_ONLY,
        ),
    )


def target_position_recommendation_transition(profile: dict[str, Any]) -> Transition:
    suggestions = profile.get("target_position_suggestions") or []
    options = [
        {"value": item["title"], "label": item["title"], "description": item.get("reason")}
        for item in suggestions if isinstance(item, dict) and item.get("title")
    ]
    options.append({"value": "manual", "label": "手动填写职位"})
    return Transition(
        Stage.TARGET_POSITION_RECOMMENDATION,
        profile,
        assistant_turn(
            "以下职位仅供探索参考，选择后仍可在简历预览中修改。",
            [component("ChoiceChips", title="职位建议", options=options, skippable=False)],
            mode=ComposerMode.UI_ONLY,
        ),
    )


def validate_target_position(payload: dict[str, Any]) -> str:
    value = str(payload.get("target_position") or "").strip()
    if not value or len(value) > 32:
        raise FSMError(
            "invalid_target_position",
            "请填写意向职位（32 字以内），或点击「暂时跳过」。",
            status_code=422,
            missing_fields=["target_position"],
        )
    return value