final touches

.env.example

@@ -1,3 +1,2 @@
-TOKEN=
-HOST=
-MODE=
+TELOXIDE_TOKEN=
+GITHUB_TOKEN=

source.json

@@ -12,8 +12,8 @@
     },
     {
       "name": "Rust Cookbook",
-      "desc": "https://rust-lang-nursery.github.io/rust-cookbook/",
-      "link": "Learn Rust good practices with practical code samples"
+      "desc": "Learn Rust good practices with practical code samples",
+      "link": "https://rust-lang-nursery.github.io/rust-cookbook/"
     },
     {
       "name": "CIS 198",

src/functions/mod.rs

@@ -32,7 +32,7 @@ pub async fn commands(
         Command::Help => crate::functions::help::command(&bot, &msg, &cmd).await,
         Command::Rules => crate::functions::rules::command(&bot, &msg).await,
         Command::About => crate::functions::about::command(&bot, &msg).await,
-        Command::Groups => crate::functions::groups::command(&bot, &msg, &groups).await,
+        Command::Group => crate::functions::groups::command(&bot, &msg, &groups).await,
         Command::Latest => crate::functions::latest::command(&bot, github, &msg).await,
         Command::Version => crate::functions::version::command(&bot, github, &msg).await,
         Command::Off => crate::functions::offtop::command(&bot, &msg, &me).await,
@@ -47,6 +47,7 @@ pub async fn callback(
     q: CallbackQuery,
     github: GitHub,
     groups: Groups,
+    resources: Resources,
 ) -> Result<(), Box<dyn Error + Send + Sync>> {
     let mut args: Vec<&str> = Vec::new();
 
@@ -64,6 +65,14 @@ pub async fn callback(
             "changelog" => {
                 crate::functions::version::callback_detail(&bot, &q, &args, github).await
             }
+            "useful" => crate::functions::useful::callback_list(&bot, &q, &resources).await,
+            "category" => {
+                crate::functions::useful::callback_category_list(&bot, &q, &args, &resources).await
+            }
+            "material" => {
+                crate::functions::useful::callback_material_detail(&bot, &q, &args, &resources)
+                    .await
+            }
             _ => Ok(()),
         };
     }

src/functions/useful.rs

@@ -1,4 +1,7 @@
-use crate::utils::{keyboard::Keyboard, resources::Resources};
+use crate::utils::{
+    keyboard::Keyboard,
+    resources::{Resource, Resources},
+};
 use teloxide::{
     payloads::SendMessageSetters,
     prelude::*,
@@ -15,27 +18,138 @@ pub async fn command(bot: &Bot, msg: &Message, resources: &Resources) -> Respons
 
     bot.send_message(msg.chat.id, TEXT)
         .parse_mode(ParseMode::Html)
-        .reply_markup(keyboard_list(1, categories))
+        .reply_markup(keyboard_list(categories))
         .disable_web_page_preview(true)
         .await?;
 
     Ok(())
 }
 
-pub fn keyboard_list(page: u32, categories: Vec<String>) -> InlineKeyboardMarkup {
+pub async fn callback_list(
+    bot: &Bot,
+    q: &CallbackQuery,
+    resources: &Resources,
+) -> ResponseResult<()> {
+    let categories = resources.get_keys();
+
+    if let Some(Message { id, chat, .. }) = q.message.clone() {
+        bot.edit_message_text(chat.id, id, TEXT)
+            .parse_mode(ParseMode::Html)
+            .reply_markup(keyboard_list(categories))
+            .disable_web_page_preview(true)
+            .await?;
+    } else if let Some(id) = q.inline_message_id.clone() {
+        bot.edit_message_text_inline(id, "Oopsie, something went wrong...")
+            .await?;
+    }
+
+    Ok(())
+}
+
+pub async fn callback_category_list(
+    bot: &Bot,
+    q: &CallbackQuery,
+    args: &Vec<&str>,
+    resources: &Resources,
+) -> ResponseResult<()> {
+    let find = resources.get_materials(args.join("_").as_str()).unwrap();
+
+    if !args.is_empty() {
+        if let Some(Message { id, chat, .. }) = q.message.clone() {
+            bot.edit_message_text(chat.id, id, view_category_list(&args.join(" ")))
+                .parse_mode(ParseMode::Html)
+                .reply_markup(keyboard_category_list(find, args.join("_")))
+                .await?;
+        } else if let Some(id) = q.inline_message_id.clone() {
+            bot.edit_message_text_inline(id, "Oopsie, something went wrong...")
+                .await?;
+        }
+    }
+
+    Ok(())
+}
+
+pub async fn callback_material_detail(
+    bot: &Bot,
+    q: &CallbackQuery,
+    args: &Vec<&str>,
+    resources: &Resources,
+) -> ResponseResult<()> {
+    let find = resources
+        .get_material(args[1..].join("_").as_str(), args[0].parse().unwrap())
+        .unwrap();
+
+    if !args.is_empty() {
+        if let Some(Message { id, chat, .. }) = q.message.clone() {
+            bot.edit_message_text(chat.id, id, view_material_detail(find))
+                .parse_mode(ParseMode::Html)
+                .reply_markup(keyboard_material_detail(find, args[1..].join("_")))
+                .await?;
+        } else if let Some(id) = q.inline_message_id.clone() {
+            bot.edit_message_text_inline(id, "Oopsie, something went wrong...")
+                .await?;
+        }
+    }
+
+    Ok(())
+}
+
+pub fn view_category_list(category: &str) -> String {
+    format!("<b>Siz hozirda {}{} kategoriyasi ichida turibsiz.</b>\nIltimos, keltirilgan materiallardan birini tanlang...", 
+        &category[0..1].to_uppercase(), &category[1..].replace('_', " "))
+}
+
+pub fn view_material_detail(material: &Resource) -> String {
+    format!(
+        "<b>{}</b>\n\n<i>{}</i>\n\n<b>Ushbu pastdagi tugmacha orqali lavha ga o'tib oling:</b>",
+        material.name, material.desc
+    )
+}
+
+pub fn keyboard_list(categories: Vec<String>) -> InlineKeyboardMarkup {
     let mut keyboard = Keyboard::new();
 
     for category in categories {
         keyboard.text(
             &format!(
                 "{}{}",
                 &category[0..1].to_uppercase(),
-                &category[1..].replace("_", " ")
+                &category[1..].replace('_', " ")
+            ),
+            &format!("category_{}", category),
+        );
+        keyboard.row();
+    }
+
+    keyboard.get()
+}
+
+pub fn keyboard_category_list(material: &[Resource], category: String) -> InlineKeyboardMarkup {
+    let mut keyboard = Keyboard::new();
+
+    for (index, value) in material.iter().enumerate() {
+        keyboard.text(
+            &format!(
+                "{}{}",
+                &value.name[0..1].to_uppercase(),
+                &value.name[1..].replace('_', " ")
             ),
-            &format!("useful_{}_{}", page, category),
+            &format!("material_{}_{}", index, category),
         );
         keyboard.row();
     }
 
+    keyboard.text("🔙 Orqaga", "useful");
+
+    keyboard.get()
+}
+
+pub fn keyboard_material_detail(resource: &Resource, category: String) -> InlineKeyboardMarkup {
+    let mut keyboard = Keyboard::new();
+
+    keyboard.url("Web Sahifasi", &resource.link);
+    keyboard.row();
+    keyboard.text("🔙 Orqaga", &format!("category_{}", category));
+
     keyboard.get()
 }

src/lib.rs

@@ -25,7 +25,7 @@ pub enum Command {
     About,
 
     /// Available groups
-    Groups,
+    Group,
 
     /// Latest version
     Latest,

src/utils/resources.rs

@@ -1,7 +1,7 @@
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 
-static RESOURCE: &'static str = include_str!("../../source.json");
+static RESOURCE: &str = include_str!("../../source.json");
 
 #[derive(Serialize, Deserialize, Clone, Debug)]
 pub struct Resource {
@@ -15,6 +15,12 @@ pub struct Resources {
     materials: HashMap<String, Vec<Resource>>,
 }
 
+impl Default for Resources {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl Resources {
     pub fn new() -> Self {
         Resources {