Backend implementation (#26)

* Backend implementation

* formating

* changes

* remove useless examples

Author: PootisHunter

ainigma-backend/Cargo.toml

@@ -7,15 +7,24 @@ edition = "2024"
 ainigma = { path = "../ainigma" }
 
 # and any other dependencies you need:
-hyper = "1.6.0"
 axum = "0.8.4"
-tokio = { version = "1", features = ["full"] }
-uuid = { version = "1.17.0", features = ["v7", "serde"] }
+tokio = { version = "1", features = ["macros", "rt-multi-thread", "fs"] }
+uuid = { version = "1.17.0", features = ["v4", "v7", "serde"] }
 serde = { version = "1.0.211", features = ["derive"] }
 serde_json = "1"
 tower = "0.5.2"
-sqlx = { version = "0.8.6", features = ["postgres", "runtime-tokio-rustls"] }
+sqlx = { version = "0.8.6", features = ["postgres", "uuid", "runtime-tokio-rustls"] }
+thiserror = "2"
+lazy_static = "1.5.0"
+regex = "1.11.1"
+tracing = "0.1.41"
+tracing-subscriber = { version = "0.3.19", features = ["env-filter", "fmt"]}
+chrono = "0.4.41"
+anyhow = "1.0.98"
+mime_guess = "2.0.5"
+tokio-util = "0.7.16"
 
 [dev-dependencies]
 reqwest = { version = "0.12.19", features = ["json"] }
-tokio = { version = "1", features = ["full"] }
+tokio = { version = "1", features = ["macros", "rt-multi-thread", "fs"] }
+httpc-test = "0.1.1"

ainigma-backend/README.md

@@ -14,14 +14,12 @@ Other things they need to take for backend to work
 ## Software
 
 Sqlx - Database
-Smithy - Generating code for backend
 
 ## Serverside structure
 
 ```
 /srv/ainigma/data/
   /courses/
-  Index file (index for quick course lookup and listing)
     /<course_id>/ (or name)
     config.toml (defined name for pathing)
       /<category>/ (name)
@@ -39,10 +37,12 @@ Smithy - Generating code for backend
 courses (1) ── (many) categories (1) ── (many) tasks
 users (1) ── (many) user_task_progress (many) ── (1) tasks
 
-## workflow
+## Workflow
 
+```
 [Client]
 |
+|-- Request for structures course, category (static response figured at server start) -->
 |-- Request (uuid, task_id, course_id) -->
 |
 [Server]
@@ -53,8 +53,9 @@ users (1) ── (many) user_task_progress (many) ── (1) tasks
 | |-- Generate flags
 | |-- Build task using course config
 | |-- Save built task
+| |-- Add Correct flag / answer to database
 |-- Return task data -->
-|-- Add Correct flag / answer to database
+|
 [Client receives task and starts solving]
 [Client]
 |
@@ -67,15 +68,16 @@ users (1) ── (many) user_task_progress (many) ── (1) tasks
 |-- No: send feedback
 |
 [Client] receives feedback
-
+```
 ## Questions
 
-- Category no identifier and task has String
+
 - Course secret storage?
-- Changes only when server down? (configuration checked at start and expected to be correct during runtime)
-  or updates? (updates to config during server runtime, checked in runtime with functionality locked during update process )
+- Database and authentication?
+
 
 ## Feedback
 
 - No support for v7 uuid in postgre only v4
-- New build function that takes a uuid, and just takes module and task_id
+- config catogories.tasks.build path made obsolete in backend - backend always knows what task to process 
+

ainigma-backend/backend.rs

@@ -2,39 +2,61 @@ CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
 
 CREATE TABLE users (
     id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
-    email VARCHAR UNIQUE NOT NULL,
     created_at TIMESTAMPTZ DEFAULT now()
 );
 
 CREATE TABLE courses (
     id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
-    title VARCHAR NOT NULL,
+    name VARCHAR NOT NULL,
     description TEXT,
     created_at TIMESTAMPTZ DEFAULT now()
 );
 
 CREATE TABLE categories (
-    id SERIAL PRIMARY KEY,
     course_id UUID NOT NULL REFERENCES courses(id) ON DELETE CASCADE,
     name VARCHAR NOT NULL,
-    number INTEGER
+    number INTEGER NOT NULL,
+    PRIMARY KEY (course_id, name)
 );
 
 CREATE TABLE tasks (
-    id SERIAL PRIMARY KEY,
-    category_id INTEGER NOT NULL REFERENCES categories(id) ON DELETE CASCADE,
-    title VARCHAR NOT NULL,
+    id VARCHAR NOT NULL,                
+    course_id UUID NOT NULL,
+    category_name VARCHAR NOT NULL,
+    name VARCHAR NOT NULL,
     description TEXT,
     points INTEGER DEFAULT 1,
-    created_at TIMESTAMPTZ DEFAULT now()
+    created_at TIMESTAMPTZ DEFAULT now(),
+    PRIMARY KEY (course_id, category_name, id),
+    FOREIGN KEY (course_id, category_name) REFERENCES categories(course_id, name) ON DELETE CASCADE
+);
+
+CREATE TABLE task_stages (
+    id VARCHAR NOT NULL,                -- stage ID (e.g., "task001A")
+    course_id UUID NOT NULL,
+    category_name VARCHAR NOT NULL,
+    task_id VARCHAR NOT NULL,           -- parent task ID
+    name VARCHAR NOT NULL,
+    description TEXT,
+    weight INTEGER DEFAULT 1,
+    flag JSONB,                         -- metadata like { kind: "user_derived" }
+    created_at TIMESTAMPTZ DEFAULT now(),
+    PRIMARY KEY (course_id, category_name, task_id, id),
+    FOREIGN KEY (course_id, category_name, task_id) REFERENCES tasks(course_id, category_name, id) ON DELETE CASCADE
 );
 
 
-CREATE TABLE user_task_progress (
-    id SERIAL PRIMARY KEY,
+CREATE TABLE user_stage_progress (
     user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    task_id INTEGER NOT NULL REFERENCES tasks(id) ON DELETE CASCADE,
+    course_id UUID NOT NULL,
+    category_name VARCHAR NOT NULL,
+    task_id VARCHAR NOT NULL,
+    stage_id VARCHAR NOT NULL,           -- stage ID
     completed_at TIMESTAMPTZ,
+    completed BOOLEAN NOT NULL DEFAULT FALSE,
     score INTEGER,
-    UNIQUE (user_id, task_id)
+    PRIMARY KEY (user_id, course_id, category_name, task_id, stage_id),
+    FOREIGN KEY (course_id, category_name, task_id, stage_id)
+        REFERENCES task_stages(course_id, category_name, task_id, id)
+        ON DELETE CASCADE
 );

ainigma-backend/migrations/0001_ainigma.sql

@@ -53,9 +53,18 @@ structure UserLoginOutput {
 }
 
 operation ListCourses{
+    output: ListCoursesOutput,
+}
+structure ListCoursesOutput {
+    courses: Vec<Course>
+}
 
+structure Course{
+    name: String
+    id: Uuid
 }
 
+
 operation GetCourseConfig{
     input: CourseConfigInput,
     output: CourseConfigOutput