Wave 1

app/__init__.py

@@ -1,6 +1,7 @@
 from flask import Flask
 from .db import db, migrate
 from .models import task, goal
+from .routes.task_routes import bp as tasks_bp
 import os
 
 def create_app(config=None):
@@ -18,5 +19,6 @@ def create_app(config=None):
     migrate.init_app(app, db)
 
     # Register Blueprints here
+    app.register_blueprint(tasks_bp)
 
     return app

app/models/task.py

@@ -1,5 +1,27 @@
 from sqlalchemy.orm import Mapped, mapped_column
+from datetime import datetime
 from ..db import db
 
 class Task(db.Model):
     id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    title: Mapped[str]
+    description: Mapped[str]
+    completed_at: Mapped[datetime | None] = mapped_column(nullable=True)
+
+    @classmethod
+    def from_dict(cls, task_data):
+        new_task = cls(
+            title = task_data["title"],
+            description = task_data["description"],
+            completed_at = task_data.get("completed_at")
+        )
+        return new_task
+
+    def to_dict(self):
+        task_as_dict = {
+            "id": self.id,
+            "title": self.title,
+            "description": self.description,
+            "is_complete": self.completed_at is not None
+        }
+        return task_as_dict

app/routes/route_utilities.py

@@ -0,0 +1,18 @@
+from flask import abort, make_response
+from ..db import db
+
+def validate_model(cls, model_id):
+    try:
+        model_id = int(model_id)
+    except:
+        response = {"message": f"{cls.__name__} {model_id} invalid"}
+        abort(make_response(response , 400))
+
+    query = db.select(cls).where(cls.id == model_id)
+    model = db.session.scalar(query)
+
+    if not model:
+        response = {"message": f"{cls.__name__} {model_id} not found"}
+        abort(make_response(response, 404))
+
+    return model

app/routes/task_routes.py

@@ -1 +1,70 @@
-from flask import Blueprint
+from flask import Blueprint, make_response, abort, request, Response
+from app.models.task import Task
+from .route_utilities import validate_model
+from ..db import db
+
+bp = Blueprint("task_bp", __name__, url_prefix="/tasks")
+
+
+# POST one task
+@bp.post("")
+def create_task():
+    request_body = request.get_json()
+
+    try:
+        new_task = Task.from_dict(request_body)
+
+    except KeyError as error:
+        response = {"message": f"Invalid request: missing {error.args[0]}"}
+        abort(make_response(response, 400))
+
+    db.session.add(new_task)
+    db.session.commit()
+
+    return make_response(new_task.to_dict(), 201)
+
+# GET all tasks
+@bp.get("")
+def get_all_tasks():
+
+    query = db.select(Task)
+
+    #sorting will be here
+    query = query.order_by(Task.id)
+    tasks = db.session.scalars(query)
+
+    tasks_response = []
+    for task in tasks:
+        tasks_response.append(task.to_dict())
+    return tasks_response
+
+# GET obe task
+@bp.get("/<task_id>")
+def get_one_task(task_id):
+    task = validate_model(Task, task_id)
+
+    return make_response(task.to_dict(), 200)
+
+# PUT one task
+@bp.put("/<task_id>")
+def update_one_task(task_id):
+    task = validate_model(Task, task_id)
+    request_body = request.get_json()
+
+    task.title = request_body["title"]
+    task.description = request_body["description"]
+    task.completed_at = request_body.get("completed_at", None)
+
+    db.session.commit()
+
+    return Response(status=204, mimetype="application/json")
+
+
+# DELETE one task
+@bp.delete("/<task_id>")
+def delete_one_task(task_id):
+    task = validate_model(Task, task_id)
+    db.session.delete(task)
+    db.session.commit()
+
+    return Response(status=204, mimetype="application/json")

migrations/README

@@ -0,0 +1 @@
+Single-database configuration for Flask.

migrations/alembic.ini

@@ -0,0 +1,50 @@
+# A generic, single database configuration.
+
+[alembic]
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic,flask_migrate
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[logger_flask_migrate]
+level = INFO
+handlers =
+qualname = flask_migrate
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S

migrations/env.py

@@ -0,0 +1,113 @@
+import logging
+from logging.config import fileConfig
+
+from flask import current_app
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+fileConfig(config.config_file_name)
+logger = logging.getLogger('alembic.env')
+
+
+def get_engine():
+    try:
+        # this works with Flask-SQLAlchemy<3 and Alchemical
+        return current_app.extensions['migrate'].db.get_engine()
+    except (TypeError, AttributeError):
+        # this works with Flask-SQLAlchemy>=3
+        return current_app.extensions['migrate'].db.engine
+
+
+def get_engine_url():
+    try:
+        return get_engine().url.render_as_string(hide_password=False).replace(
+            '%', '%%')
+    except AttributeError:
+        return str(get_engine().url).replace('%', '%%')
+
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+config.set_main_option('sqlalchemy.url', get_engine_url())
+target_db = current_app.extensions['migrate'].db
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def get_metadata():
+    if hasattr(target_db, 'metadatas'):
+        return target_db.metadatas[None]
+    return target_db.metadata
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url, target_metadata=get_metadata(), literal_binds=True
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online():
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+
+    # this callback is used to prevent an auto-migration from being generated
+    # when there are no changes to the schema
+    # reference: http://alembic.zzzcomputing.com/en/latest/cookbook.html
+    def process_revision_directives(context, revision, directives):
+        if getattr(config.cmd_opts, 'autogenerate', False):
+            script = directives[0]
+            if script.upgrade_ops.is_empty():
+                directives[:] = []
+                logger.info('No changes in schema detected.')
+
+    conf_args = current_app.extensions['migrate'].configure_args
+    if conf_args.get("process_revision_directives") is None:
+        conf_args["process_revision_directives"] = process_revision_directives
+
+    connectable = get_engine()
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection,
+            target_metadata=get_metadata(),
+            **conf_args
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

migrations/script.py.mako

@@ -0,0 +1,24 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}

migrations/versions/2ecb51e9e650_create_task_model.py

@@ -0,0 +1,39 @@
+"""Create Task model
+
+Revision ID: 2ecb51e9e650
+Revises: 
+Create Date: 2025-10-30 16:33:18.690114
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '2ecb51e9e650'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('goal',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('task',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('title', sa.String(), nullable=False),
+    sa.Column('description', sa.String(), nullable=False),
+    sa.Column('completed_at', sa.DateTime(), nullable=True),
+    sa.PrimaryKeyConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('task')
+    op.drop_table('goal')
+    # ### end Alembic commands ###