from dataclasses import dataclass, field
from dataclasses_json import config, dataclass_json
from typing import List, Optional, Dict

from external_api.base.clients.client import ApiClient
from external_api.utils import remove_none_values


def exclude_if_none(value):
    return value is None


@dataclass_json
@dataclass
class EmailContextSchema:
    artist_image_link: str
    artist_name: str
    media_plan_link: str
    project_name: str
    message: Optional[str] = field(default=None, metadata=config(exclude=exclude_if_none))
    requester_email: Optional[str] = field(default=None, metadata=config(exclude=exclude_if_none))
    review_link: Optional[str] = field(default=None, metadata=config(exclude=exclude_if_none))
    approval_count: Optional[int] = field(default=None, metadata=config(exclude=exclude_if_none))
    approved_campaigns_count: Optional[int] = field(default=None, metadata=config(exclude=exclude_if_none))
    disapproved_campaigns_count: Optional[int] = field(default=None, metadata=config(exclude=exclude_if_none))
    reviewer_fullname: Optional[str] = field(default=None, metadata=config(exclude=exclude_if_none))
    requester_fullname: Optional[str] = field(default=None, metadata=config(exclude=exclude_if_none))
    reviewer_name: Optional[str] = field(default=None, metadata=config(exclude=exclude_if_none))
    requester_name: Optional[str] = field(default=None, metadata=config(exclude=exclude_if_none))
    label_name: Optional[str] = field(default=None, metadata=config(exclude=exclude_if_none))


@dataclass_json
@dataclass
class EmailTemplateSchema:
    id: int
    context: EmailContextSchema


@dataclass
class SendEmailAttachmentSchema:
    base64_data: str
    filename: str
    filetype: str


@dataclass
class SendEmailSchema:
    to: List[str]
    subject: Optional[str] = None
    body: Optional[str] = None
    template: Optional[EmailTemplateSchema] = None
    cc: Optional[List[str]] = None
    attachments: Optional[List[SendEmailAttachmentSchema]] = None
    track_clicks: Optional[bool] = None


class NotificationsClient:
    http_client: ApiClient

    def __init__(self, client: ApiClient):
        self.http_client = client

    async def send_email(self, params: List[SendEmailSchema]) -> List[Dict[str, str]]:
        endpoint = "/email/send"

        payload = [remove_none_values({
            "body": email.body,
            "template": email.template.to_dict(),
            "subject": email.subject,
            "to": email.to,
            "cc": email.cc,
            "attachments": email.attachments,
            "track_clicks": email.track_clicks
        }) for email in params]

        return await self.http_client.post(endpoint, payload=payload)