basic ui

src/commands.rs

@@ -5,16 +5,25 @@ use crate::{
     persistence::Db,
 };
 
-pub fn execute(mut db: Db, args: &TrsArgs) -> Result<(), TrsError> {
-    let sub_command = &args.sub_command;
-    match sub_command {
-        TrsSubCommand::AddChannel(add_args) => add_channel(&mut db, add_args),
-        TrsSubCommand::ListChannels(list_args) => list_channels(&mut db, list_args),
-        TrsSubCommand::RemoveChannel(delete_args) => delete_channel(&mut db, delete_args),
+pub struct RssChannelD {
+    pub id: i64,
+    pub title: String,
+    pub link: String,
+    pub description: String,
+}
+
+impl RssChannelD {
+    fn new(id: i64, title: String, link: String, description: String) -> Self {
+        RssChannelD {
+            id,
+            title,
+            link,
+            description,
+        }
     }
 }
 
-fn add_channel(db: &mut Db, args: &AddChannelArgs) -> Result<(), TrsError> {
+pub fn add_channel(db: &mut Db, args: &AddChannelArgs) -> Result<(), TrsError> {
     let client = reqwest::blocking::Client::new();
     let rss = client.get(&args.link).send().map_err(|e| {
         TrsError::ReqwestError(
@@ -39,7 +48,7 @@ fn add_channel(db: &mut Db, args: &AddChannelArgs) -> Result<(), TrsError> {
     Ok(())
 }
 
-fn list_channels(conn: &mut Db, args: &ListChannelArgs) -> Result<(), TrsError> {
+pub fn list_channels(conn: &mut Db, args: &ListChannelArgs) -> Result<Vec<RssChannelD>, TrsError> {
     let channels_iter =
         conn.list_channels
             .query_map([args.limit.unwrap_or_else(|| 999)], |row| {
@@ -51,18 +60,18 @@ fn list_channels(conn: &mut Db, args: &ListChannelArgs) -> Result<(), TrsError>
                 ))
             })?;
 
+    let mut channels = Vec::new();
+
     for row in channels_iter {
         let (id, name, link, description) = row?;
-        println!(
-            "ID: {}, Name: {}, Link: {}, Description: {}",
-            id, name, link, description
-        );
+        let channel = RssChannelD::new(id, name, link, description);
+        channels.push(channel);
     }
 
-    Ok(())
+    Ok(channels)
 }
 
-fn delete_channel(db: &mut Db, args: &RemoveChannelArgs) -> Result<(), TrsError> {
+pub fn remove_channel(db: &mut Db, args: &RemoveChannelArgs) -> Result<(), TrsError> {
     let rows_affected = db
         .remove_channel
         .execute([args.id])

src/main.rs

@@ -1,4 +1,4 @@
-use args::TrsArgs;
+use args::{TrsArgs, TrsSubCommand};
 use error::Result;
 pub mod args;
 pub mod commands;
@@ -10,16 +10,26 @@ pub mod ui;
 fn main() -> Result<()> {
     if std::env::args().len() < 2 {
         let terminal = ratatui::init();
-        ui::ui(terminal)?;
+        let conn = persistence::init_connection()?;
+        let db = persistence::init_db(&conn)?;
+        ui::ui(db, terminal)?;
         ratatui::restore();
         return Ok(());
     }
 
     let args = argh::from_env::<TrsArgs>();
     let conn = persistence::init_connection()?;
-    let db = persistence::init_db(&conn)?;
-    commands::execute(db, &args).map_err(|e| {
-        eprintln!("Error executing command: {}", e);
-        e
-    })
+    let mut db = persistence::init_db(&conn)?;
+    match args.sub_command {
+        TrsSubCommand::AddChannel(args) => commands::add_channel(&mut db, &args),
+        TrsSubCommand::ListChannels(args) => {
+            let channels = commands::list_channels(&mut db, &args)?;
+            for channel in channels {
+                println!("{}: {} ({})", channel.id, channel.title, channel.link);
+            }
+
+            return Ok(());
+        }
+        TrsSubCommand::RemoveChannel(args) => commands::remove_channel(&mut db, &args),
+    }
 }

src/ui.rs

@@ -1,29 +1,110 @@
 use std::io::Stdout;
 
-use crate::error::{Result, TrsError};
+use crate::{
+    args::ListChannelArgs,
+    commands::{self, RssChannelD},
+    error::{Result, TrsError},
+    persistence::Db,
+};
 use crossterm::event::{self, Event, KeyEventKind};
-use ratatui::{prelude::CrosstermBackend, Terminal};
+use ratatui::{
+    prelude::*,
+    widgets::{Block, Borders, Paragraph},
+};
+
+struct ChannelsWidget<'a> {
+    channels: &'a Vec<RssChannelD>,
+}
+
+impl<'a> Widget for ChannelsWidget<'a> {
+    fn render(self, area: Rect, buf: &mut Buffer) {
+        let columns = Layout::default()
+            .direction(Direction::Horizontal)
+            .constraints(vec![
+                Constraint::Length(5),
+                Constraint::Length(50),
+                Constraint::Fill(1),
+                Constraint::Length(5),
+            ])
+            .split(area);
+
+        let rows = Layout::default()
+            .direction(Direction::Vertical)
+            .constraints(vec![
+                Constraint::Length(3),
+                Constraint::Fill(1),
+                Constraint::Length(5),
+            ])
+            .split(columns[1]);
+
+        let channel_rows = Layout::default()
+            .direction(Direction::Vertical)
+            .constraints(vec![Constraint::Length(1); 10])
+            .split(rows[1])
+            .to_vec();
+
+        Block::default()
+            .borders(Borders::RIGHT)
+            .render(rows[1], buf);
+
+        for (row, channel) in channel_rows.into_iter().zip(self.channels) {
+            let id = Span::styled(
+                format!("{}. ", channel.id),
+                Style::default()
+                    .fg(Color::Yellow)
+                    .add_modifier(Modifier::BOLD),
+            );
+            let title = Span::styled(
+                channel.title.clone(),
+                Style::default()
+                    .fg(Color::Cyan)
+                    .add_modifier(Modifier::BOLD),
+            );
+            let line = Line::from(vec![id, title]);
+            let para = Paragraph::new(line).block(Block::default());
+            para.render(row, buf);
+        }
+    }
+}
 
 struct AppState {
     exit: bool,
+    channels: Vec<RssChannelD>,
 }
 
-pub fn ui(mut terminal: Terminal<CrosstermBackend<Stdout>>) -> Result<()> {
-    let mut app_state = AppState { exit: false };
+pub fn ui(mut db: Db, mut terminal: Terminal<CrosstermBackend<Stdout>>) -> Result<()> {
+    let mut app_state = AppState {
+        channels: Vec::new(),
+        exit: false,
+    };
+
+    let channels = commands::list_channels(&mut db, &ListChannelArgs { limit: None })?;
+    app_state.channels = channels;
+
     loop {
+        draw(&app_state, &mut terminal)?;
+
         handle_events(&mut app_state)?;
 
         if app_state.exit {
             break;
         }
-
-        draw(&app_state, &mut terminal)?;
     }
     Ok(())
 }
 
 fn draw(app_state: &AppState, terminal: &mut Terminal<CrosstermBackend<Stdout>>) -> Result<()> {
-    todo!()
+    terminal
+        .draw(|f| {
+            let channel_widget = ChannelsWidget {
+                channels: &app_state.channels,
+            };
+
+            f.render_widget(channel_widget, f.area());
+        })
+        .map_err(|e| TrsError::TuiError(e))?;
+
+    Ok(())
 }
 
 fn handle_events(state: &mut AppState) -> Result<()> {