use crate::net;
use crate::ui::Page;

use super::db;
use super::ui;
use iced::widget::markdown;
use iced::widget::row;
use iced::widget::scrollable;
use iced::widget::Column;
use iced::widget::Text;
use iced::Theme;
use iced::{
    widget::{button, column, container, text},
    Element,
};
use crate::rss_content::Content;
use ui::Message;

pub fn list_feeds() -> iced::widget::Column<'static, Message> {
    let feeds = db::get_feeds();
    column(
        feeds
            .iter()
            .map(|f| {
                let n = net::url_network(&f.url);
                let prefix = match n {
                    net::Network::Clearnet => "",
                    net::Network::Tor => "Tor: ",
                    net::Network::I2P => "I2P: ",
                    _ => "",
                };
                row!(
                    button(text(prefix.to_owned() + &f.title))
                        .on_press(Message::LoadFeed(f.feed_id)),
                    button(text("Remove feed")).on_press(Message::RemoveFeed(f.feed_id))
                )
            })
            .map(Element::from),
    )
    .align_x(iced::Alignment::Start)
    .spacing(5)
    .padding(15)
}

pub fn list_items(feed_id: i64) -> iced::widget::Column<'static, Message> {
    let items: Vec<db::FeedItem> = db::get_feed_items(feed_id);
    column(
        items
            .iter()
            .map(|i| button(text(i.title.clone())).on_press(Message::LoadItem(i.item_id)))
            .map(Element::from),
    )
    .align_x(iced::Alignment::Start)
    .spacing(5)
    .padding(15)
}

pub fn content_area(content: &'_ Vec<Content>) -> iced::widget::Container<'_, Message> {
    let mut children: Vec<Element<Message>> = Vec::new();
    for c in content {
        match c {
            Content::MarkdownParsed(p) => {
                children.push(markdown(p, Theme::Dark).map(Message::LinkClicked));
            }
            Content::Image(_) => {
                children.push(text("<Image goes here>").size(32).into());
            }
            Content::Audio(_) => {
                children.push(text("<Audio widget here>").size(32).into());
            }
            Content::Video(_) => {
                children.push(text("<Video goes here>").size(32).into());
            }
            _ => {}
        }
    }
    container(Column::with_children(children).spacing(5))
}

pub fn media_view(state: &'_ ui::State) -> Element<'_, Message> {
    match state.current_item.clone().unwrap().media {
        Some(m) => {
            if m.len() > 0 {
                text(format!("<Media is available:{}>", m)).into()
            } else {
                text("".to_owned()).into()
            }
        }
        None => text("".to_owned()).into(),
    }
}

pub fn navbar(state: &ui::State) -> Element<Message> {
    match state.page {
        Page::Home => row::Row::new()
            .push(button("Feeds").on_press(Message::ChangePage(Page::Feeds)))
            .push(button("All Items").on_press(Message::ChangePage(Page::AllItems)))
            .push(button("Categories").on_press(Message::ChangePage(Page::CategoryView)))
            .push(button("Dev Panel").on_press(Message::ChangePage(Page::Testing)))
            .spacing(5)
            .padding(5),
        Page::Feeds => row::Row::new()
            .push(button("Home").on_press(Message::ChangePage(Page::Home)))
            .push(button("All Items").on_press(Message::ChangePage(Page::AllItems)))
            .push(button("Categories").on_press(Message::ChangePage(Page::CategoryView)))
            .push(button("Dev Panel").on_press(Message::ChangePage(Page::Testing)))
            .spacing(5)
            .padding(5),
        Page::FeedView => row::Row::new()
            .push(button("Home").on_press(Message::ChangePage(Page::Home)))
            .push(button("All Items").on_press(Message::ChangePage(Page::AllItems)))
            .push(button("Categories").on_press(Message::ChangePage(Page::CategoryView)))
            .push(button("Dev Panel").on_press(Message::ChangePage(Page::Testing)))
            .spacing(5)
            .padding(5),
        Page::AllItems => row::Row::new()
            .push(button("Home").on_press(Message::ChangePage(Page::Home)))
            .push(button("Feeds").on_press(Message::ChangePage(Page::Feeds)))
            .push(button("Categories").on_press(Message::ChangePage(Page::CategoryView)))
            .push(button("Dev Panel").on_press(Message::ChangePage(Page::Testing)))
            .spacing(5)
            .padding(5),
        Page::CategoryView => row::Row::new()
            .push(button("Home").on_press(Message::ChangePage(Page::Home)))
            .push(button("Feeds").on_press(Message::ChangePage(Page::Feeds)))
            .push(button("All Items").on_press(Message::ChangePage(Page::AllItems)))
            .push(button("Dev Panel").on_press(Message::ChangePage(Page::Testing)))
            .spacing(5)
            .padding(5),
        Page::Testing => row::Row::new()
            .push(button("Home").on_press(Message::ChangePage(Page::Home)))
            .push(button("Feeds").on_press(Message::ChangePage(Page::Feeds)))
            .push(button("Categories").on_press(Message::ChangePage(Page::CategoryView)))
            .push(button("All Items").on_press(Message::ChangePage(Page::AllItems)))
            .spacing(5)
            .padding(5),
        Page::ItemView => row::Row::new()
            .push(button("Home").on_press(Message::ChangePage(Page::Home)))
            .push(button("Feeds").on_press(Message::ChangePage(Page::Feeds)))
            .push(button("Categories").on_press(Message::ChangePage(Page::CategoryView)))
            .push(button("All Items").on_press(Message::ChangePage(Page::AllItems)))
            .spacing(5)
            .padding(5),
    }
    .into()
}

pub fn list_item(id: i64, title: String, description: String) -> Column<'static, Message> {
    Column::new()
        .push(button(Text::new(title)).on_press(Message::LoadItem(id)))
        .push(text(description))
        .align_x(iced::Alignment::Center)
        .spacing(5)
}

pub fn content_view(state: &'_ ui::State) -> iced::widget::Scrollable<'_, Message> {
    let item = state.current_item.clone().unwrap();

    scrollable(column!(
        match item.description {
            Some(_d) => {
                content_area(&state.item_description)
            }
            None => {
                container(text("No description found"))
            }
        },
        match item.content {
            Some(_c) => {
                content_area(&state.item_content)
            }
            None => {
                container(text("No content found"))
            }
        }
    ))
    .width(iced::Fill)
}