WIP: Switch to rusqlite

Cargo.toml

@@ -14,6 +14,6 @@ serde_json = "1.0.89"
 int-enum = "0.5.0"
 thiserror = "1"
 anyhow = "1"
-sqlx = { version = "0.6", features = [  "runtime-async-std-native-tls", "sqlite" ] }
-async-std = { version = "1", features = [ "attributes" ] }
 clap = { version = "4.3.2" , features = [ "derive" ] }
+rusqlite = { version = "0.29", features = [ "bundled" ] }
+async-std = { version = "1", features = [ "attributes" ] }

migrations/tables.sql

@@ -5,6 +5,7 @@ create table if not exists task
     id integer primary key autoincrement,
     title text not null,
     description text not null,
+    sort_order integer not null default 0,
     column_id integer,
     foreign key (column_id) references kb_column(id)
 );

src/app.rs

@@ -1,13 +1,15 @@
 // use indexmap::IndexMap;
 // use int_enum::IntEnum;
-use crate::get_all_tasks;
+// use crate::get_all_tasks;
+use rusqlite::Connection;
 use serde::{Deserialize, Serialize};
-use sqlx::SqlitePool;
 use std::cmp::min;
 use std::fs::File;
 use std::io::Read;
 use tui_textarea::TextArea;
 
+use crate::get_all_tasks;
+
 #[cfg(test)]
 mod tests;
 
@@ -18,7 +20,7 @@ pub struct Column {
     pub tasks: Vec<Task>,
 }
 
-#[derive(Clone, Default, Deserialize, Serialize, Debug, sqlx::FromRow)]
+#[derive(Clone, Default, Deserialize, Serialize, Debug)]
 pub struct Task {
     pub title: String,
     pub description: String,
@@ -69,7 +71,7 @@ impl Default for TaskState<'_> {
 
 pub struct State<'a> {
     pub project: Project,
-    pub db_pool: SqlitePool,
+    pub db_pool: Connection,
     pub quit: bool,
     pub columns: Vec<Column>,
     pub task_edit_state: Option<TaskState<'a>>,
@@ -77,7 +79,7 @@ pub struct State<'a> {
 
 impl State<'_> {
     #[must_use]
-    pub fn new(db_pool: SqlitePool, project: Project) -> Self {
+    pub fn new(db_pool: Connection, project: Project) -> Self {
         State {
             quit: false,
             task_edit_state: None,
@@ -180,8 +182,8 @@ impl Project {
         }
     }
 
-    pub async fn load2(pool: &SqlitePool) -> Result<Self, KanbanError> {
-        let todos = get_all_tasks(&pool).await.unwrap();
+    pub async fn load2(pool: &Connection) -> Result<Self, KanbanError> {
+        let todos = get_all_tasks(&pool).unwrap();
 
         Ok(Project {
             name: String::from("Kanban Board"),

src/db.rs

@@ -1,30 +1,76 @@
-use crate::app::Task;
-use sqlx::SqlitePool;
+use crate::{Task};
+use rusqlite::{Connection, Result};
 
-pub async fn get_tasks_by_column(pool: &SqlitePool, column_name: &String) -> Option<Vec<Task>> {
-    sqlx::query_as!(
-        Task,
+pub fn get_tasks_by_column(conn: &Connection, column_name: &String) -> Result<Vec<Task>> {
+    let mut stmt = conn.prepare(
         r#"
             select title, description from task
             join kb_column on column_id = kb_column.id
             where kb_column.name = ?1
         "#,
-        column_name
-    )
-    .fetch_all(pool)
-    .await
-    .ok()
+    )?;
+    let mut tasks = Vec::new();
+    let rows = stmt.query_map(&[column_name], |row| {
+        Ok(Task {
+            title: row.get(0)?,
+            description: row.get(1)?,
+        })
+    })?;
+    for row in rows {
+        tasks.push(row?);
+    }
+    Ok(tasks)
 }
 
-pub async fn get_all_tasks(pool: &SqlitePool) -> Option<Vec<(String, Vec<Task>)>> {
-    let columns = sqlx::query!("select name from kb_column")
-        .fetch_all(pool)
-        .await
-        .unwrap();
-    let mut tasks_by_column: Vec<(String, Vec<Task>)> = Vec::with_capacity(columns.len());
+pub fn get_all_tasks(conn: &Connection) -> Result<Vec<(String, Vec<Task>)>> {
+    let mut stmt = conn.prepare("select name from kb_column")?;
+    let columns = stmt.query_map((), |row| {
+        Ok(row.get::<usize, String>(0)?)
+    })?;
+    let mut tasks_by_column: Vec<(String, Vec<Task>)> = Vec::new();
     for col in columns {
-        let tasks = get_tasks_by_column(pool, &col.name).await.unwrap();
-        tasks_by_column.push((col.name, tasks));
+        let name = &col?;
+        let tasks = get_tasks_by_column(conn, name).unwrap();
+        tasks_by_column.push((name.to_string(), tasks));
     }
-    Some(tasks_by_column)
+    Ok(tasks_by_column)
 }
+
+// pub async fn insert_new_task(pool: &SqlitePool, task: &Task, column: &Column) {
+//     // TODO: You have to add the id to the column
+//     sqlx::query!("insert into task(title, description, column_id) values (?1, ?2, ?3)", task.title, task.description, 1)
+//         .execute(pool)
+//         .await
+//         .unwrap();
+// }
+
+// pub async fn update_task(pool: &SqlitePool, task: &Task) {
+//     sqlx::query!("update task set title = ?1, description = ?2", task.title, task.description)
+//         .execute(pool)
+//         .await
+//         .unwrap();
+// }
+
+// pub async fn move_task_to_column(pool: &SqlitePool, task: &Task, target_column: &Column) {
+//     // TODO: You have to add the id to the column
+//     sqlx::query!("update task set column_id = ?1", 1)
+//         .execute(pool)
+//         .await
+//         .unwrap();
+// }
+
+// pub async fn move_task_order(pool: &SqlitePool, task: &Task) {
+//     // TODO: We have to add some kind of ordering mechanism to tasks
+//     sqlx::query!("update task set column_id = ?1", 1)
+//         .execute(pool)
+//         .await
+//         .unwrap();
+// }
+
+// pub async fn delete_task(pool: &SqlitePool, task: &Task) {
+//     // TODO: We have to add ids to tasks
+//     sqlx::query!("delete from task where id = ?1", 1)
+//         .execute(pool)
+//         .await
+//         .unwrap();
+// }

src/main.rs

@@ -5,7 +5,7 @@ use crossterm::{
     terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
 };
 use kanban_tui::{Project, State};
-use sqlx::sqlite::SqlitePool;
+use rusqlite::Connection;
 use std::{
     error::Error,
     fs::{File, OpenOptions},
@@ -87,8 +87,9 @@ async fn main() -> anyhow::Result<(), Box<dyn Error>> {
         }
     };
 
-    let db_pool = SqlitePool::connect("sqlite:db.sqlite").await?;
+    let db_pool = Connection::open("db.sqlite")?;
 
+    // let project = Project::load(_filepath, &_file)?;
     let project = Project::load2(&db_pool).await?;
     let mut state = State::new(db_pool, project);