Possum - Geetha

app/__init__.py

@@ -1,6 +1,8 @@
 from flask import Flask
 from .db import db, migrate
 from .models import task, goal
+from .routes.task_routes import bp as tasks_bp
+from .routes.goal_routes import bp as goals_bp
 import os
 
 def create_app(config=None):
@@ -18,5 +20,7 @@ def create_app(config=None):
     migrate.init_app(app, db)
 
     # Register Blueprints here
+    app.register_blueprint(tasks_bp)
+    app.register_blueprint(goals_bp)
 
     return app

app/models/goal.py

@@ -1,5 +1,24 @@
-from sqlalchemy.orm import Mapped, mapped_column
+from sqlalchemy.orm import Mapped, mapped_column,relationship
 from ..db import db
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    from .task import Task
 
 class Goal(db.Model):
     id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    title: Mapped[str]
+    tasks: Mapped[list["Task"]] = relationship(back_populates="goal")
+
+    def to_dict(self) :
+        return {
+            "id": self.id,
+            "title" : self.title
+            #"tasks" : [task.to_dict() for task in self.tasks]
+        }
+
+    @classmethod
+    def from_dict(cls, goal_data):
+        return cls(
+            title = goal_data["title"]
+            #tasks = [Task.from_dict(task_data) for task_data in goal_data["tasks"]]
+        )

app/models/task.py

@@ -1,5 +1,43 @@
-from sqlalchemy.orm import Mapped, mapped_column
+from datetime import datetime
+from sqlalchemy.orm import Mapped, mapped_column, relationship
 from ..db import db
+from sqlalchemy import ForeignKey
+from typing import Optional
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    from .goal import Goal
 
 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)
+    goal_id: Mapped[Optional[int]] = mapped_column(ForeignKey("goal.id"))
+    goal: Mapped[Optional["Goal"]] = relationship(back_populates="tasks")
+
+    def to_dict(self) :
+        result = {
+            "id": self.id,
+            "title": self.title,
+            "description": self.description,
+            "is_complete": False if not self.completed_at else True
+        }
+            #"is_complete" : self.is_complete()
+        if self.goal_id:
+                result["goal_id"] = self.goal_id
+        return result
+
+    @classmethod
+    def from_dict(cls, task_data):
+        return cls(
+            title = task_data["title"],
+            description = task_data["description"],
+            completed_at = task_data.get("completed_at"),
+            goal_id = task_data.get("goal_id", None)
+
+        )
+
+    # def is_complete(self):
+    #     if self.completed_at is not None:
+    #         return True
+    #     return False

app/routes/goal_routes.py

@@ -1 +1,63 @@
-from flask import Blueprint
+from flask import Blueprint, request, Response
+from ..db import db
+from ..models.goal import Goal
+from ..models.task import Task
+from .routes_utilities import validate_model, create_model, get_models_with_filters
+from datetime import datetime
+
+bp = Blueprint("goals_bp", __name__, url_prefix="/goals")
+
+@bp.post("")
+def create_goal():
+    request_body = request.get_json()
+    return create_model(Goal, request_body)
+
+@bp.get("")
+def get_all_goals():
+    return get_models_with_filters(Goal, request.args)
+
+@bp.get("/<goal_id>")
+def get_one_goal(goal_id):
+    goal = validate_model(Goal, goal_id)
+    return goal.to_dict()
+
+@bp.put("/<goal_id>")
+def update_goal(goal_id):
+    goal = validate_model(Goal, goal_id)
+    request_body = request.get_json()
+    goal.title = request_body["title"]
+    db.session.commit()
+    return Response(status=204, mimetype="application/json")
+
+@bp.delete("/<goal_id>")
+def delete_goal(goal_id):
+    goal = validate_model(Goal, goal_id)
+    db.session.delete(goal)
+    db.session.commit()
+    return Response(status=204, mimetype="application/json")
+
+@bp.post("/<goal_id>/tasks")
+def send_list_of_task_to_goal_id(goal_id):
+    goal = validate_model(Goal,goal_id)
+    query = db.select(Task).where(Task.goal_id == goal.id)
+    existing_tasks = db.session.scalars(query).all()
+    for each_task in existing_tasks:
+        each_task.goal_id = None
+    request_body = request.get_json()
+    task_ids= request_body.get("task_ids", [])
+    for task_id in task_ids:
+        task = validate_model(Task, task_id)
+        task.goal_id =goal.id
+    db.session.commit()
+    response_body = {
+        "id" : goal.id,
+        "task_ids" : [task.id for task in goal.tasks]
+    }
+    return response_body, 200
+
+@bp.get("/<id>/tasks")
+def get_all_tasks_with_one_goal(id):
+    goal = validate_model(Goal, id)
+    goal_dict = goal.to_dict()
+    goal_dict["tasks"] = [task.to_dict() for task in goal.tasks]
+    return goal_dict

app/routes/routes_utilities.py

@@ -0,0 +1,45 @@
+from flask import abort, make_response
+from ..db import db
+
+def validate_model(cls, id):
+    try:
+        id = int(id)
+    except ValueError:
+        invalid = {"message": f"{cls.__name__} id ({id}) is invalid."}
+        abort(make_response(invalid, 400))
+
+    query = db.select(cls).where(cls.id == id)
+    model = db.session.scalar(query)
+    if not model:    
+        not_found = {"message": f"{cls.__name__} with id ({id}) not found."}
+        abort(make_response(not_found, 404))
+
+    return model
+
+def create_model(cls, model_data):
+    try:
+        new_model = cls.from_dict(model_data)
+    except KeyError as e:
+        response = {"details": "Invalid data"}
+        abort(make_response(response, 400))
+
+    db.session.add(new_model)
+    db.session.commit()
+
+    return new_model.to_dict(), 201
+
+def get_models_with_filters(cls, filters=None):
+    query = db.select(cls)
+
+    if filters:
+        for attribute, value in filters.items():
+            if attribute == "sort" and value.lower() == "asc":
+                query = query.order_by(cls.title.asc())
+            elif attribute == "sort" and value.lower() == "desc":
+                query = query.order_by(cls.title.desc())
+            elif hasattr(cls, attribute):
+                query = query.where(getattr(cls, attribute).ilike(f"%{value}%"))
+
+    models = db.session.scalars(query)
+    models_response = [model.to_dict() for model in models]
+    return models_response

app/routes/task_routes.py

@@ -1 +1,70 @@
-from flask import Blueprint
+from flask import Blueprint, request, Response, abort, make_response
+from ..db import db
+from ..models.task import Task
+from .routes_utilities import validate_model, create_model, get_models_with_filters
+from datetime import datetime
+import os
+import requests
+
+bp = Blueprint("tasks_bp", __name__, url_prefix="/tasks")
+
+@bp.post("")
+def create_task():
+    request_body = request.get_json()
+    return create_model(Task, request_body)
+
+@bp.get("")
+def get_all_tasks():
+    return get_models_with_filters(Task, request.args)
+
+@bp.get("/<task_id>")
+def get_one_task(task_id):
+    task = validate_model(Task, task_id)
+    return task.to_dict()
+
+@bp.put("/<task_id>")
+def update_task(task_id):
+    task = validate_model(Task, task_id)
+    request_body = request.get_json()
+    task.title = request_body["title"]
+    task.description = request_body["description"]
+    if "completed_at" in request_body:
+        task.completed_at = request_body["completed_at"]
+    else:
+        task.completed_at = None
+    db.session.commit()
+    return Response(status=204, mimetype="application/json")
+
+@bp.delete("/<task_id>")
+def delete_task(task_id):
+    task = validate_model(Task, task_id)
+    db.session.delete(task)
+    db.session.commit()
+    return Response(status=204, mimetype="application/json")
+
+@bp.patch("/<task_id>/mark_complete")
+def mark_task_complete(task_id):
+    task = validate_model(Task, task_id)
+    task.completed_at = datetime.now()
+    task.title="My Beautiful Task"
+    db.session.commit()
+    slack_url = "https://slack.com/api/chat.postMessage"
+    slack_request_body = {
+        "channel": "#task-notifications",
+        "text": f"Someone just completed the task {task.title}"
+    }
+    slack_headers  = {
+        "Authorization": f"Bearer {os.environ.get('SLACK_BOT_TOKEN')}",
+        "Content-Type": "application/json"
+    }
+    requests.post(slack_url, json = slack_request_body, headers = slack_headers)
+
+    return Response(status=204, mimetype="application/json")
+
+@bp.patch("/<task_id>/mark_incomplete")
+def mark_task_incomplete(task_id):
+    task = validate_model(Task, task_id)
+    task.completed_at = None
+    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