feat: adds main loop

fix: some logic bugs

Cargo.toml

@@ -9,6 +9,7 @@ serde = {version = "1.0.204", features = ["derive"]}
 serde_json = "1.0.122"
 ellipse = "0.2.0"
 itertools = "0.13.0"
+clearscreen = "3.0.0"
 
 [dev-dependencies]
 tempfile = "3.11.0"

db.json

@@ -0,0 +1,5 @@
+{
+  "last_item_id": 3,
+  "epics": {},
+  "stories": {}
+}

src/db.rs

@@ -1,4 +1,5 @@
-use std::fs;
+use std::fs::{self, OpenOptions};
+use std::path::Path;
 
 use anyhow::{anyhow, Result};
 
@@ -9,10 +10,23 @@ pub struct JiraDatabase {
 }
 
 impl JiraDatabase {
-    pub fn new(file_path: String) -> Self {
-        Self {
-            database: Box::new(JSONFileDatabase { file_path }),
+    pub fn new(file_path: &str) -> Result<Self> {
+        let path = file_path.to_owned();
+        let db = Self {
+            database: Box::new(JSONFileDatabase { file_path: path }),
+        };
+
+        if !Path::new(file_path).exists() {
+            match OpenOptions::new().create(true).write(true).open(file_path) {
+                Err(e) => return Err(anyhow!("failed to open/create database file: {e}")),
+                Ok(_) => {
+                    db.database.write_db(&DBState::new())?;
+                }
+            }
+            // .with_context(|| format!("failed to create epic"))?;
         }
+
+        Ok(db)
     }
 
     pub fn read_db(&self) -> Result<DBState> {
@@ -138,6 +152,7 @@ pub mod test_utils {
     }
 
     impl MockDB {
+        #[allow(dead_code)]
         pub fn new() -> Self {
             Self {
                 last_written_state: RefCell::new(DBState {

src/io_utils.rs

@@ -5,5 +5,9 @@ pub fn get_user_input() -> String {
 
     io::stdin().read_line(&mut user_input).unwrap();
 
-    user_input
-}
+    user_input.trim().to_owned()
+}
+
+pub fn wait_for_key_press() {
+    io::stdin().read_line(&mut String::new()).unwrap();
+}

src/main.rs

@@ -1,9 +1,59 @@
-mod db;
-mod io_utils;
+use std::rc::Rc;
+
 mod models;
-mod navigator;
+
+mod db;
+use anyhow::Result;
+use db::*;
+
 mod ui;
 
-fn main() {
-    println!("Welcome scrumtask-cli!");
+mod io_utils;
+use io_utils::*;
+
+mod navigator;
+use navigator::*;
+
+fn main() -> Result<()> {
+    // TODO: create database and navigator
+    let db = Rc::new(JiraDatabase::new("./db.json")?);
+    let mut nav = Navigator::new(db);
+
+    loop {
+        // clearscreen::clear().unwrap();
+
+        // 1. get current page from navigator. If there is no current page exit the loop.
+        let page = match nav.get_current_page() {
+            Some(p) => p,
+            None => {
+                break Ok(());
+            }
+        };
+        // 2. render page
+        if let Err(e) = page.draw_page() {
+            eprintln!("failed to render page: {e}");
+            wait_for_key_press();
+            break Err(e);
+        }
+        // 3. get user input
+        let input = io_utils::get_user_input();
+        // 4. pass input to page's input handler
+        let action = match page.handle_input(&input.trim()) {
+            Err(e) => {
+                eprintln!("failed to handle input '{input}': {e}");
+                wait_for_key_press();
+                break Err(e);
+            }
+            Ok(a) => a,
+        };
+        // 5. if the page's input handler returns an action let the navigator process the action
+        if let Some(a) = action {
+            let action = a.clone();
+            if let Err(e) = nav.handle_action(a) {
+                eprintln!("failed to handle action '{action:?}': {e}");
+                wait_for_key_press();
+                break Err(e);
+            }
+        }
+    }
 }

src/models.rs

@@ -1,7 +1,7 @@
 use serde::{Deserialize, Serialize};
 use std::{collections::HashMap, fmt::Display};
 
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Debug, PartialEq, Eq, Clone)]
 pub enum Action {
     NavigateToEpicDetail { epic_id: u32 },
     NavigateToStoryDetail { epic_id: u32, story_id: u32 },
@@ -15,7 +15,7 @@ pub enum Action {
     Exit,
 }
 
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
 pub enum Status {
     Open,
     InProgress,
@@ -34,7 +34,7 @@ impl Display for Status {
     }
 }
 
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
 pub struct Epic {
     pub name: String,
     pub description: String,
@@ -53,7 +53,7 @@ impl Epic {
     }
 }
 
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
 pub struct Story {
     pub name: String,
     pub description: String,
@@ -76,3 +76,13 @@ pub struct DBState {
     pub epics: HashMap<u32, Epic>,
     pub stories: HashMap<u32, Story>,
 }
+
+impl DBState {
+    pub fn new() -> Self {
+        Self {
+            last_item_id: 0,
+            epics: HashMap::new(),
+            stories: HashMap::new(),
+        }
+    }
+}

src/navigator.rs

@@ -1,3 +1,4 @@
+#[allow(unused_imports)]
 use anyhow::{anyhow, Context, Ok, Result};
 use std::rc::Rc;
 
@@ -45,7 +46,9 @@ impl Navigator {
             }
             Action::NavigateToPreviousPage => {
                 // remove the last page from the pages vector
-                let _ = self.pages.pop();
+                if !self.pages.is_empty() {
+                    self.pages.pop();
+                }
             }
             Action::CreateEpic => {
                 // prompt the user to create a new epic and persist it in the database
@@ -61,9 +64,12 @@ impl Navigator {
             }
             Action::DeleteEpic { epic_id } => {
                 // prompt the user to delete the epic and persist it in the database
-                self.db
-                    .delete_epic(epic_id)
-                    .with_context(|| format!("failed to delete epic: {epic_id}"))?;
+                if (self.prompts.delete_epic)() {
+                    self.db
+                        .delete_epic(epic_id)
+                        .with_context(|| format!("failed to delete epic: {epic_id}"))?;
+                    self.pages.pop();
+                }
             }
             Action::CreateStory { epic_id } => {
                 // prompt the user to create a new story and persist it in the database
@@ -73,9 +79,12 @@ impl Navigator {
             }
             Action::UpdateStoryStatus { story_id } => {
                 // prompt the user to update status and persist it in the database
-                let status = (self.prompts.update_status)()
-                    .with_context(|| format!("invalid status: {story_id}"))?;
-                self.db.update_story_status(story_id, status)?;
+                if let Some(status) = (self.prompts.update_status)() {
+                    let s = status.clone();
+                    self.db
+                        .update_story_status(story_id, status)
+                        .with_context(|| format!("invalid status: {s}"))?;
+                }
             }
             Action::DeleteStory { epic_id, story_id } => {
                 // prompt the user to delete the story and persist it in the database
@@ -83,6 +92,7 @@ impl Navigator {
                     self.db
                         .delete_story(epic_id, story_id)
                         .with_context(|| format!("failed to delete story: {story_id}"))?;
+                    self.pages.pop();
                 }
             }
             Action::Exit => {
@@ -95,11 +105,11 @@ impl Navigator {
     }
 
     // Private functions used for testing
-
+    #[allow(dead_code)]
     fn get_page_count(&self) -> usize {
         self.pages.len()
     }
-
+    #[allow(dead_code)]
     fn set_prompts(&mut self, prompts: Prompts) {
         self.prompts = prompts;
     }

src/ui/pages/mod.rs

@@ -14,6 +14,7 @@ use page_helpers::*;
 pub trait Page {
     fn draw_page(&self) -> Result<()>;
     fn handle_input(&self, input: &str) -> Result<Option<Action>>;
+    #[allow(dead_code)]
     fn as_any(&self) -> &dyn Any;
 }
 
@@ -31,11 +32,16 @@ impl Page for HomePage {
         println!("----------------------------- EPICS -----------------------------");
         println!("     id     |               name               |      status      ");
 
-        self.db.read_db()?.epics.iter().for_each(|(id, e)| {
-            print!("{}| ", get_column_string(format!("{id}").as_str(), 12));
-            print!("{}| ", get_column_string(&e.name, 33));
-            print!("{}", get_column_string(&e.status.to_string(), 17));
-        });
+        self.db
+            .read_db()?
+            .epics
+            .iter()
+            .sorted()
+            .for_each(|(id, e)| {
+                print!("{}| ", get_column_string(format!("{id}").as_str(), 12));
+                print!("{}| ", get_column_string(&e.name, 33));
+                print!("{}", get_column_string(&e.status.to_string(), 17));
+            });
 
         println!();
         println!();
@@ -95,7 +101,7 @@ impl Page for EpicDetail {
 
         let stories = &db_state.stories;
 
-        for (id, e) in stories {
+        for (id, e) in stories.iter().sorted() {
             print!("{}| ", get_column_string(format!("{id}").as_str(), 12));
             print!("{}| ", get_column_string(&e.name, 33));
             print!("{}", get_column_string(&e.status.to_string(), 17));

src/ui/prompts.rs

@@ -46,7 +46,7 @@ fn create_story_prompt() -> Story {
 fn delete_epic_prompt() -> bool {
     static QUESTION: &str = "Are you sure you want to delete this epic? All stories in this epic will also be deleted [Y/n]:";
     println!("{DELIMITER}");
-    print!("{QUESTION}");
+    println!("{QUESTION}");
     let decision = matches!(get_user_input().as_str(), "y" | "Y");
     println!();
     decision
@@ -55,7 +55,7 @@ fn delete_epic_prompt() -> bool {
 fn delete_story_prompt() -> bool {
     static QUESTION: &str = "Are you sure you want to delete this story? [Y/n]:";
     println!("{DELIMITER}");
-    print!("{QUESTION}");
+    println!("{QUESTION}");
     let decision = matches!(get_user_input().as_str(), "y" | "Y");
     println!();
     decision
@@ -64,14 +64,12 @@ fn delete_story_prompt() -> bool {
 fn update_status_prompt() -> Option<Status> {
     static QUESTION: &str = "New Status (1 - OPEN, 2 - IN-PROGRESS, 3 - RESOLVED, 4 - CLOSED):";
     println!("{DELIMITER}");
-    print!("{QUESTION}");
-    let decision = match get_user_input().as_str() {
+    println!("{QUESTION}");
+    match get_user_input().as_str() {
         "1" => Some(Status::Open),
         "2" => Some(Status::InProgress),
         "3" => Some(Status::Resolved),
         "4" => Some(Status::Closed),
         _ => None,
-    };
-    println!();
-    decision
+    }
 }