"""Favro Data Model.

Based on the descriptions on the [Favro API Specification
Page](https://favro.com/developer/), and observed behaviour.
"""

import dataclasses
import datetime
from typing import Any


@dataclasses.dataclass(frozen=True)
class SeqId:
    raw_id: int


@dataclasses.dataclass(frozen=True)
class CardId:
    raw_id: str


@dataclasses.dataclass(frozen=True)
class CommonId:
    raw_id: str


@dataclasses.dataclass(frozen=True)
class UserId:
    raw_id: str


@dataclasses.dataclass(frozen=True)
class OrganizationId:
    raw_id: str


@dataclasses.dataclass(frozen=True)
class CardAssignment:
    user: UserId
    completed: bool

    @staticmethod
    def from_json(json: dict[str, Any]) -> 'CardAssignment':
        return CardAssignment(
            UserId(json['userId']),
            json['completed'],
        )


@dataclasses.dataclass(frozen=True)
class UserInfo:
    user_id: UserId
    name: str
    email: str
    organization_role: str

    @staticmethod
    def from_json(json: dict[str, Any]) -> 'UserInfo':
        return UserInfo(
            map_opt(UserId, json.get('userId')),
            json.get('name'),
            json.get('email'),
            json.get('organizationRole'),
        )


@dataclasses.dataclass(frozen=True)
class TagId:
    raw_id: str


@dataclasses.dataclass(frozen=True)
class CustomFieldId:
    raw_id: str


@dataclasses.dataclass(frozen=True)
class TagInfo:
    tag_id: TagId
    organization_id: OrganizationId
    name: str
    color: str | None

    @staticmethod
    def from_json(json: dict[str, Any]) -> 'TagInfo':
        return TagInfo(
            TagId(json['tagId']),
            OrganizationId(json['organizationId']),
            json['name'],
            json.get('color'),
        )


@dataclasses.dataclass(frozen=True)
class CustomField:
    custom_field_id: CustomFieldId
    value: list[str] | str

    @staticmethod
    def from_json(json: dict[str, Any]) -> 'CustomField':
        return CustomField(
            CustomFieldId(json['customFieldId']),
            json.get('value'),
        )


@dataclasses.dataclass(frozen=True)
class CardDependency:
    card_id: CardId
    card_common_id: CommonId
    is_before: bool
    reverse_card_id: CardId

    @staticmethod
    def from_json(json: dict[str, Any]) -> 'CardDependency':
        return CardDependency(
            CardId(json['cardId']),
            CommonId(json['cardCommonId']),
            json['isBefore'],
            CardId(json['reverseCardId']),
        )


@dataclasses.dataclass(frozen=True)
class Card:
    card_id: CardId
    seq_id: SeqId
    common_id: CommonId
    organization_id: OrganizationId
    is_archived: bool
    name: str
    dependencies: list[CardDependency]
    assignments: list[CardAssignment]
    custom_fields: list[CustomField]
    tags: list[TagId]
    todo_list_user_id: UserId | None
    todo_list_completed: bool | None
    creator_user_id: UserId
    creation_date: datetime.datetime
    start_date: datetime.date | None
    due_date: datetime.date | None
    attachments: list[dict]
    detailed_description: str | None
    archived: bool

    @staticmethod
    def from_json(json: dict[str, Any]) -> 'Card':
        return Card(
            card_id=CardId(json['cardId']),
            seq_id=SeqId(json['sequentialId']),
            common_id=CommonId(json['cardCommonId']),
            detailed_description=json.get('detailedDescription'),
            is_archived=json['archived'],
            organization_id=OrganizationId(json['organizationId']),
            name=json['name'],
            todo_list_user_id=map_opt(UserId, json.get('todoListUserId')),
            todo_list_completed=json.get('todoListCompleted'),
            dependencies=[
                CardDependency.from_json(dep) for dep in json['dependencies']
            ],
            tags=[TagId(tag) for tag in json['tags']],
            creator_user_id=UserId(json['createdByUserId']),
            creation_date=map_opt(datetime.datetime.fromisoformat,json.get('createdAt')),
            start_date=map_opt(datetime.datetime.fromisoformat,json.get('startDate')),
            due_date=map_opt(datetime.datetime.fromisoformat,json.get('dueDate')),
            assignments=[CardAssignment.from_json(ass) for ass in json['assignments']],
            custom_fields=[
                CustomField.from_json(field) for field in json['customFields']
            ],
            archived=json['archived'],
            attachments=json['attachments'],  # TODO
        )

def map_opt(mapper, value):
    if value is not None:
        return mapper(value)
    return None