"""Data models for work order ingestion."""

from dataclasses import dataclass, field, asdict
from datetime import datetime
from enum import Enum
from typing import Optional


class EmailType(str, Enum):
    NEW_WORK_ORDER = "new_work_order"
    UPDATE = "update"
    COMMENT = "comment"
    UNKNOWN = "unknown"


class WorkOrderStatus(str, Enum):
    NEW = "new"
    ASSIGNED = "assigned"
    IN_PROGRESS = "in_progress"
    ON_HOLD = "on_hold"
    COMPLETED = "completed"
    CANCELLED = "cancelled"
    UNKNOWN = "unknown"


@dataclass
class Comment:
    work_order_id: str
    comment_id: str  # generated: {work_order_id}#{timestamp}
    commenter: str
    text: str
    created_at: str  # ISO 8601
    source_email_s3_key: str
    ingested_at: str = field(default_factory=lambda: datetime.utcnow().isoformat())

    def to_dynamo_item(self) -> dict:
        return {k: v for k, v in asdict(self).items() if v is not None}


@dataclass
class WorkOrder:
    work_order_id: str
    description: Optional[str] = None
    status: str = WorkOrderStatus.UNKNOWN.value
    customer: str = "AMAZON"
    site_code: Optional[str] = None
    building: Optional[str] = None
    address: Optional[str] = None
    severity: Optional[str] = None
    priority: Optional[str] = None
    date_reported: Optional[str] = None
    scheduled_start: Optional[str] = None
    due_date: Optional[str] = None
    assigned_to: Optional[str] = None
    source_email_s3_key: Optional[str] = None
    created_at: str = field(default_factory=lambda: datetime.utcnow().isoformat())
    updated_at: str = field(default_factory=lambda: datetime.utcnow().isoformat())

    def to_dynamo_item(self) -> dict:
        return {k: v for k, v in asdict(self).items() if v is not None}


@dataclass
class ParsedEmail:
    """Result of AI parsing an inbound email."""
    email_type: str  # EmailType value
    work_order_id: Optional[str] = None
    description: Optional[str] = None
    status: Optional[str] = None
    site_code: Optional[str] = None
    building: Optional[str] = None
    address: Optional[str] = None
    severity: Optional[str] = None
    priority: Optional[str] = None
    date_reported: Optional[str] = None
    scheduled_start: Optional[str] = None
    due_date: Optional[str] = None
    assigned_to: Optional[str] = None
    commenter: Optional[str] = None
    comment_text: Optional[str] = None
    comment_time: Optional[str] = None
    raw_subject: Optional[str] = None