"""Domain models for reminders and related data structures."""

from datetime import datetime
from enum import IntEnum
from typing import Literal, Optional

from pydantic import Field

from pyicloud.common.models import FrozenServiceModel, MutableServiceModel


class Reminder(MutableServiceModel):
    """A reminder in a reminders list with metadata and related IDs."""

    id: str
    list_id: str
    title: str
    desc: str = ""
    completed: bool = False
    completed_date: Optional[datetime] = None
    due_date: Optional[datetime] = None
    start_date: Optional[datetime] = None
    priority: int = 0
    flagged: bool = False
    all_day: bool = False
    deleted: bool = False
    time_zone: Optional[str] = None
    alarm_ids: list[str] = Field(default_factory=list)
    hashtag_ids: list[str] = Field(default_factory=list)
    attachment_ids: list[str] = Field(default_factory=list)
    recurrence_rule_ids: list[str] = Field(default_factory=list)
    parent_reminder_id: Optional[str] = None
    created: Optional[datetime] = None
    modified: Optional[datetime] = None
    record_change_tag: Optional[str] = None


class ReminderChangeEvent(FrozenServiceModel):
    """Incremental reminder change event emitted by ``iter_changes()``."""

    type: Literal["updated", "deleted"]
    reminder_id: str
    reminder: Optional[Reminder] = None


class RemindersList(MutableServiceModel):
    """A collection of reminders with list metadata."""

    id: str
    title: str
    color: Optional[str] = None
    count: int = 0
    badge_emblem: Optional[str] = None
    sorting_style: Optional[str] = None
    is_group: bool = False
    reminder_ids: list[str] = Field(default_factory=list)
    guid: Optional[str] = None
    record_change_tag: Optional[str] = None


# --- Alarm records ---


class Alarm(MutableServiceModel):
    """Container for alarm triggers, referenced by Reminder.alarm_ids."""

    id: str
    alarm_uid: str
    reminder_id: str
    trigger_id: str
    record_change_tag: Optional[str] = None


class Proximity(IntEnum):
    """Geofence proximity direction."""

    ARRIVING = 1
    LEAVING = 2


class LocationTrigger(MutableServiceModel):
    """Location-based alarm trigger (geofence)."""

    id: str
    alarm_id: str
    title: str = ""
    address: str = ""
    latitude: float = 0.0
    longitude: float = 0.0
    radius: float = Field(default=0.0, ge=0.0)
    proximity: Proximity = Proximity.ARRIVING
    location_uid: str = ""
    record_change_tag: Optional[str] = None


# --- Attachment records ---


class URLAttachment(MutableServiceModel):
    """URL attachment on a reminder."""

    id: str
    reminder_id: str
    url: str = ""
    uti: str = "public.url"
    record_change_tag: Optional[str] = None


class ImageAttachment(MutableServiceModel):
    """Image attachment on a reminder."""

    id: str
    reminder_id: str
    file_asset_url: str = ""
    filename: str = ""
    file_size: int = Field(default=0, ge=0)
    width: int = Field(default=0, ge=0)
    height: int = Field(default=0, ge=0)
    uti: str = "public.jpeg"
    record_change_tag: Optional[str] = None


# --- Hashtag records ---


class Hashtag(MutableServiceModel):
    """Tag associated with a reminder."""

    id: str
    name: str
    reminder_id: str
    created: Optional[datetime] = None
    record_change_tag: Optional[str] = None


# --- Recurrence rules ---


class RecurrenceFrequency(IntEnum):
    """Recurrence frequency type."""

    DAILY = 1
    WEEKLY = 2
    MONTHLY = 3
    YEARLY = 4


class RecurrenceRule(MutableServiceModel):
    """Recurrence rule for a repeating reminder."""

    id: str
    reminder_id: str
    frequency: RecurrenceFrequency = RecurrenceFrequency.DAILY
    interval: int = Field(default=1, ge=1)
    occurrence_count: int = Field(default=0, ge=0)  # 0 == infinite
    first_day_of_week: int = Field(default=0, ge=0, le=6)
    record_change_tag: Optional[str] = None