import uuid
from datetime import date, datetime, timezone

from pydantic import BaseModel, ConfigDict, field_validator


class MonitoringVisitIssueCreate(BaseModel):
    issue_no: str | None = None
    site_id: uuid.UUID | None = None
    category: str
    severity: str | None = None
    mark: str | None = None
    visit_cycle: str | None = None
    subject_code: str | None = None
    monitor_item: str | None = None
    monitor_type: str | None = None
    status: str = "OPEN"
    source: str | None = None
    creator_name: str | None = None
    recommendation: str | None = None
    subject_name: str | None = None
    description: str | None = None
    action_taken: str | None = None
    follow_up_progress: str | None = None
    center_query: str | None = None
    center_latest_reply: str | None = None
    rectification_completed: bool = False
    found_date: date | None = None
    due_at: datetime | None = None
    actual_resolve_date: date | None = None
    closed_at: datetime | None = None
    responsible_name: str | None = None

    @field_validator("category", mode="before")
    @classmethod
    def _strip_required(cls, value: str) -> str:
        text = (value or "").strip()
        if not text:
            raise ValueError("不能为空")
        return text

    @field_validator("issue_no", mode="before")
    @classmethod
    def _strip_issue_no(cls, value: str | None) -> str | None:
        if value is None:
            return None
        text = value.strip()
        return text or None

    @field_validator(
        "subject_code",
        "severity",
        "mark",
        "visit_cycle",
        "monitor_item",
        "monitor_type",
        "source",
        "creator_name",
        "recommendation",
        "subject_name",
        "description",
        "action_taken",
        "follow_up_progress",
        "center_query",
        "center_latest_reply",
        "responsible_name",
        mode="before",
    )
    @classmethod
    def _strip_optional(cls, value: str | None) -> str | None:
        if value is None:
            return None
        text = value.strip()
        return text or None

    @field_validator("status", mode="before")
    @classmethod
    def _normalize_status(cls, value: str | None) -> str:
        normalized = (value or "OPEN").strip().upper()
        if normalized not in {"OPEN", "CLOSED"}:
            raise ValueError("状态必须为 OPEN 或 CLOSED")
        return normalized

    @field_validator("due_at", "closed_at")
    @classmethod
    def _normalize_due_at(cls, value: datetime | None) -> datetime | None:
        if value is None:
            return None
        return value if value.tzinfo else value.replace(tzinfo=timezone.utc)


class MonitoringVisitIssueRead(BaseModel):
    id: uuid.UUID
    study_id: uuid.UUID
    site_id: uuid.UUID | None
    issue_no: str
    open_duration: str
    category: str
    severity: str | None
    mark: str | None
    visit_cycle: str | None
    subject_code: str | None
    monitor_item: str | None
    monitor_type: str | None
    progress: str
    status: str
    source: str | None
    creator_name: str | None
    recommendation: str | None
    subject_name: str | None
    created_at: datetime
    description: str | None
    action_taken: str | None
    follow_up_progress: str | None
    center_query: str | None
    center_latest_reply: str | None
    rectification_completed: bool
    found_date: date | None
    overdue: bool
    due_at: datetime | None
    actual_resolve_date: date | None
    closed_at: datetime | None
    responsible_name: str | None

    model_config = ConfigDict(from_attributes=True)


class MonitoringVisitIssueImportSummary(BaseModel):
    created_count: int
    updated_count: int
    skipped_count: int
    skipped_rows: list[str]


class MonitoringVisitIssueUpdate(BaseModel):
    issue_no: str | None = None
    site_id: uuid.UUID | None = None
    category: str | None = None
    severity: str | None = None
    mark: str | None = None
    visit_cycle: str | None = None
    subject_code: str | None = None
    monitor_item: str | None = None
    monitor_type: str | None = None
    status: str | None = None
    source: str | None = None
    creator_name: str | None = None
    recommendation: str | None = None
    subject_name: str | None = None
    description: str | None = None
    action_taken: str | None = None
    follow_up_progress: str | None = None
    center_query: str | None = None
    center_latest_reply: str | None = None
    rectification_completed: bool | None = None
    found_date: date | None = None
    due_at: datetime | None = None
    actual_resolve_date: date | None = None
    closed_at: datetime | None = None
    responsible_name: str | None = None

    @field_validator("issue_no", "category", mode="before")
    @classmethod
    def _strip_required(cls, value: str | None) -> str | None:
        if value is None:
            return None
        text = value.strip()
        if not text:
            raise ValueError("不能为空")
        return text

    @field_validator(
        "subject_code",
        "severity",
        "mark",
        "visit_cycle",
        "monitor_item",
        "monitor_type",
        "source",
        "creator_name",
        "recommendation",
        "subject_name",
        "description",
        "action_taken",
        "follow_up_progress",
        "center_query",
        "center_latest_reply",
        "responsible_name",
        mode="before",
    )
    @classmethod
    def _strip_optional(cls, value: str | None) -> str | None:
        if value is None:
            return None
        text = value.strip()
        return text or None

    @field_validator("status", mode="before")
    @classmethod
    def _normalize_status(cls, value: str | None) -> str | None:
        if value is None:
            return None
        normalized = value.strip().upper()
        if normalized not in {"OPEN", "CLOSED"}:
            raise ValueError("状态必须为 OPEN 或 CLOSED")
        return normalized

    @field_validator("due_at", "closed_at")
    @classmethod
    def _normalize_due_at(cls, value: datetime | None) -> datetime | None:
        if value is None:
            return None
        return value if value.tzinfo else value.replace(tzinfo=timezone.utc)