wiki-tui 0.4.2

A simple and easy to use Wikipedia Text User Interface
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use crate::{change_theme, config, remove_view_from_article_layout, ui, wiki};

use anyhow::Context;
use cursive::align::HAlign;
use cursive::view::{Nameable, Scrollable};
use cursive::views::{Dialog, LinearLayout, TextView};
use cursive::Cursive;

pub mod lines;
pub mod links;
pub mod view;
pub type ArticleView = view::ArticleView;

pub fn on_article_submit(siv: &mut Cursive, article_preview: &ui::models::ArticleResultPreview) {
    log::info!("Opening the article '{}'", article_preview.title);
    // remove the results layer
    siv.pop_layer();

    // get the article from wikipedia
    let wiki: &wiki::WikiApi = siv.user_data().unwrap();
    let article = match wiki.get_article(&article_preview.page_id) {
        Ok(article) => article,
        Err(error) => {
            // log an error_message
            log::error!("{:?}", error);

            // display an error_message
            siv.add_layer(
                Dialog::info(
                    "A Problem occurred while fetching the article.\nCheck the logs for further information",
                )
                .title("Error")
                .title_position(HAlign::Center),
            );
            return;
        }
    };

    // remove views
    remove_view_from_article_layout(siv, "logo_view");
    remove_view_from_article_layout(siv, "article_view");
    remove_view_from_article_layout(siv, "toc_view");

    let mut article_view =
        ui::article::ArticleView::new().on_link_submit(|s, target| on_link_submit(s, target));

    // set the contents of the article_view to the article
    log::debug!("Setting the content of the article view");
    article_view.set_article(article.clone().article);

    // add the article_view to the article_layout]
    siv.call_on_name("article_layout", |view: &mut LinearLayout| {
        view.insert_child(
            0,
            change_theme!(
                config::CONFIG.theme.article_view,
                Dialog::around(article_view.with_name("article_view").scrollable())
            ),
        );
    });
    log::debug!("Added the article_view to the article_layout");

    // does this article have a table of contents?
    if article.toc.is_some() {
        log::debug!("The article contains a table of contents");
        ui::toc::add_table_of_contents(siv, article.toc.unwrap());
    } else {
        log::debug!("The article doesn't contain a table of contents");
    }

    // focus the article view
    let result = siv
        .focus_name("article_view")
        .context("Failed to focus the article view");

    match result {
        Ok(_) => log::debug!("Successfully focussed the article view"),
        Err(error) => log::warn!("{:?}", error),
    }
}

fn on_link_submit(siv: &mut Cursive, target: &str) {
    let target = target.to_string();

    siv.add_layer(
        Dialog::around(TextView::new(format!(
            "Do you want to open the dialog {}?",
            target
        )))
        .button("Yes", move |s| show_article_from_link(s, target.clone()))
        .button("No", |s| {
            s.pop_layer();
        }),
    )
}

fn show_article_from_link(siv: &mut Cursive, target: String) {
    siv.pop_layer();

    // remove views
    remove_view_from_article_layout(siv, "logo_view");
    remove_view_from_article_layout(siv, "article_view");
    remove_view_from_article_layout(siv, "toc_view");

    // get the article from wikipedia
    let wiki: &wiki::WikiApi = siv.user_data().unwrap();
    let article = match wiki.open_article(&target) {
        Ok(article) => article,
        Err(error) => {
            // log an error_message
            log::error!("{:?}", error);

            // display an error message
            siv.add_layer(
                Dialog::info(
                    "An error occurred while fetching the article.\nCheck the logs for further information"
                )
                .title("Error")
                .title_position(HAlign::Center),
            );
            return;
        }
    };

    let mut article_view =
        ui::article::ArticleView::new().on_link_submit(|s, target| on_link_submit(s, target));

    // set the contents of the article_view to the article
    log::debug!("Setting the content of the article view");
    article_view.set_article(article.clone().article);

    // add the article_view to the article_layout]
    siv.call_on_name("article_layout", |view: &mut LinearLayout| {
        view.insert_child(
            0,
            change_theme!(
                config::CONFIG.theme.article_view,
                Dialog::around(article_view.with_name("article_view").scrollable())
            ),
        );
    });
    log::debug!("Added the article_view to the article_layout");

    // does this article have a table of contents?
    if article.toc.is_some() {
        log::debug!("The article contains a table of contents");
        ui::toc::add_table_of_contents(siv, article.toc.unwrap());
    } else {
        log::debug!("The article doesn't contain a table of contents");
    }

    // focus the article view
    let result = siv
        .focus_name("article_view")
        .context("Failed to focus the article view");

    match result {
        Ok(_) => log::info!("Successfully focussed the article view"),
        Err(error) => log::warn!("{:?}", error),
    }
}