"""

Post Utilities

"""

import json
from typing import Dict

__all__ = ["Post"]

from substack.exceptions import SectionNotExistsException


class Post:
    """

    Post utility class

    """

    def __init__(
        self,
        title: str,
        subtitle: str,
        user_id,
        audience: str = None,
        write_comment_permissions: str = None,
    ):
        """

        Args:
            title:
            subtitle:
            user_id:
            audience: possible values: everyone, only_paid, founding, only_free
            write_comment_permissions: none, only_paid, everyone (this field is a mess)
        """
        self.draft_title = title
        self.draft_subtitle = subtitle
        self.draft_body = {"type": "doc", "content": []}
        self.draft_bylines = [{"id": int(user_id), "is_guest": False}]
        self.audience = audience if audience is not None else "everyone"
        self.draft_section_id = None
        self.section_chosen = True

        # TODO better understand the possible values and combinations with audience
        if write_comment_permissions is not None:
            self.write_comment_permissions = write_comment_permissions
        else:
            self.write_comment_permissions = self.audience

    def set_section(self, name: str, sections: list):
        """

        Args:
            name:
            sections:

        Returns:

        """
        section = [s for s in sections if s.get("name") == name]
        if len(section) != 1:
            raise SectionNotExistsException(name)
        section = section[0]
        self.draft_section_id = section.get("id")

    def add(self, item: Dict):
        """

        Add item to draft body.

        Args:
            item:

        Returns:

        """

        self.draft_body["content"] = self.draft_body.get("content", []) + [
            {"type": item.get("type")}
        ]
        content = item.get("content")
        if item.get("type") == "captionedImage":
            self.captioned_image(**item)
        elif item.get("type") == "embeddedPublication":
            self.draft_body["content"][-1]["attrs"] = item.get("url")
        elif item.get("type") == "youtube2":
            self.youtube(item.get("src"))
        elif item.get("type") == "subscribeWidget":
            self.subscribe_with_caption(item.get("message"))
        else:
            if content is not None:
                self.add_complex_text(content)

        if item.get("type") == "heading":
            self.attrs(item.get("level", 1))

        marks = item.get("marks")
        if marks is not None:
            self.marks(marks)

        return self

    def paragraph(self, content=None):
        """

        Args:
            content:

        Returns:

        """
        item = {"type": "paragraph"}
        if content is not None:
            item["content"] = content
        return self.add(item)

    def heading(self, content=None, level: int = 1):
        """

        Args:
            content:
            level:

        Returns:

        """

        item = {"type": "heading"}
        if content is not None:
            item["content"] = content
        item["level"] = level
        return self.add(item)

    def horizontal_rule(self):
        """

        Returns:

        """
        return self.add({"type": "horizontal_rule"})

    def attrs(self, level):
        """

        Args:
            level:

        Returns:

        """
        content_attrs = self.draft_body["content"][-1].get("attrs", {})
        content_attrs.update({"level": level})
        self.draft_body["content"][-1]["attrs"] = content_attrs
        return self

    def captioned_image(
        self,
        src: str,
        fullscreen: bool = False,
        imageSize: str = "normal",
        height: int = 819,
        width: int = 1456,
        resizeWidth: int = 728,
        bytes: str = None,
        alt: str = None,
        title: str = None,
        type: str = None,
        href: str = None,
        belowTheFold: bool = False,
        internalRedirect: str = None,
    ):
        """

        Add image to body.

        Args:
            bytes:
            alt:
            title:
            type:
            href:
            belowTheFold:
            internalRedirect:
            src:
            fullscreen:
            imageSize:
            height:
            width:
            resizeWidth:
        """

        content = self.draft_body["content"][-1].get("content", [])
        content += [
            {
                "type": "image2",
                "attrs": {
                    "src": src,
                    "fullscreen": fullscreen,
                    "imageSize": imageSize,
                    "height": height,
                    "width": width,
                    "resizeWidth": resizeWidth,
                    "bytes": bytes,
                    "alt": alt,
                    "title": title,
                    "type": type,
                    "href": href,
                    "belowTheFold": belowTheFold,
                    "internalRedirect": internalRedirect,
                },
            }
        ]
        self.draft_body["content"][-1]["content"] = content
        return self

    def text(self, value: str):
        """

        Add text to the last paragraph.

        Args:
            value: Text to add to paragraph.

        Returns:

        """
        content = self.draft_body["content"][-1].get("content", [])
        content += [{"type": "text", "text": value}]
        self.draft_body["content"][-1]["content"] = content
        return self

    def add_complex_text(self, text):
        """

        Args:
            text:
        """
        if isinstance(text, str):
            self.text(text)
        else:
            for chunk in text:
                if chunk:
                    self.text(chunk.get("content")).marks(chunk.get("marks", []))

    def marks(self, marks):
        """

        Args:
            marks:

        Returns:

        """
        content = self.draft_body["content"][-1].get("content", [])[-1]
        content_marks = content.get("marks", [])
        for mark in marks:
            new_mark = {"type": mark.get("type")}
            if mark.get("type") == "link":
                href = mark.get("href")
                new_mark.update({"attrs": {"href": href}})
            content_marks.append(new_mark)
        content["marks"] = content_marks
        return self

    def remove_last_paragraph(self):
        """Remove last paragraph"""
        del self.draft_body.get("content")[-1]

    def get_draft(self):
        """

        Returns:

        """
        out = vars(self)
        out["draft_body"] = json.dumps(out["draft_body"])
        return out

    def subscribe_with_caption(self, message: str = None):
        """

        Add subscribe widget with caption

        Args:
            message:

        Returns:

        """

        if message is None:
            message = """Thanks for reading this newsletter!
            Subscribe for free to receive new posts and support my work."""

        subscribe = self.draft_body["content"][-1]
        subscribe["attrs"] = {
            "url": "%%checkout_url%%",
            "text": "Subscribe",
            "language": "en",
        }
        subscribe["content"] = [
            {
                "type": "ctaCaption",
                "content": [
                    {
                        "type": "text",
                        "text": message,
                    }
                ],
            }
        ]
        return self

    def youtube(self, value: str):
        """

        Add youtube video to post.

        Args:
            value: youtube url

        Returns:

        """
        content_attrs = self.draft_body["content"][-1].get("attrs", {})
        content_attrs.update({"videoId": value})
        self.draft_body["content"][-1]["attrs"] = content_attrs
        return self