use camino::{Utf8Path, Utf8PathBuf};
use chrono::{DateTime, Utc};
use hauchiwa::{Bibliography, Link, LinkDate, Linkable, Outline, Sack};
use hayagriva::Library;
use hypertext::{html_elements, maud_move, GlobalAttributes, Raw, Renderable};
use serde::Deserialize;

/// Represents a simple post.
#[derive(Deserialize, Debug, Clone)]
pub struct Post {
    pub title: String,
    #[serde(with = "super::isodate")]
    pub date: DateTime<Utc>,
    pub desc: Option<String>,
    pub scripts: Option<Vec<String>>,
}

pub fn parse_content(
    content: &str,
    sack: &Sack,
    path: &Utf8Path,
    library: Option<&Library>,
) -> (String, Outline, Bibliography) {
    crate::text::md::parse(content, sack, path, library)
}

pub fn as_html(
    meta: &Post,
    parsed: &str,
    sack: &Sack,
    outline: Outline,
    bibliography: Bibliography,
) -> String {
    post(meta, parsed, sack, outline, bibliography)
        .unwrap()
        .render()
        .into()
}

pub fn as_link(meta: &Post, path: Utf8PathBuf) -> Option<Linkable> {
    Some(Linkable::Date(LinkDate {
        link: Link {
            path,
            name: meta.title.to_owned(),
            desc: meta.desc.to_owned(),
        },
        date: meta.date.to_owned(),
    }))
}

pub fn post<'s, 'p, 'html>(
    meta: &'p Post,
    parsed: &'p str,
    sack: &'s Sack,
    outline: Outline,
    bibliography: Bibliography,
) -> Result<impl Renderable + 'html, String>
where
    's: 'html,
    'p: 'html,
{
    let main = maud_move!(
        main {
            (article(&meta.title, parsed, sack, outline, bibliography))
        }
    );

    crate::html::page(sack, main, meta.title.clone(), meta.scripts.as_deref())
}

pub fn article<'p, 's, 'html>(
    title: &'p str,
    parsed: &'p str,
    _: &'s Sack,
    outline: Outline,
    bibliography: Bibliography,
) -> impl Renderable + 'html
where
    's: 'html,
    'p: 'html,
{
    maud_move!(
        div .wiki-main {

            // Slide in/out for mobile
            input #wiki-aside-shown type="checkbox" hidden;

            aside .wiki-aside {
                // Slide button
                label .wiki-aside__slider for="wiki-aside-shown" {
                    img .wiki-icon src="/static/svg/double-arrow.svg" width="24" height="24";
                }
                (crate::html::misc::show_outline(outline))
            }

            article .wiki-article /*class:list={classlist)*/ {
                header class="markdown" {
                    h1 #top { (title) }
                }
                section .wiki-article__markdown.markdown {
                    (Raw(parsed))
                }

                @if let Some(bib) = bibliography.0 {
                    (crate::html::misc::emit_bibliography(bib))
                }
            }
        }
    )
}