From d0f200761233b9b94bb20a2dcd4d666239c8e042 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Patrik=20Mn=C3=ADch?= <mnich.patrik@gmail.com>
Date: Wed, 15 May 2024 20:10:03 +0200
Subject: [PATCH] NEW: added script with command line task manager

---
 main.py | 160 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 160 insertions(+)
 create mode 100644 main.py

diff --git a/main.py b/main.py
new file mode 100644
index 0000000..8a64826
--- /dev/null
+++ b/main.py
@@ -0,0 +1,160 @@
+import sys
+from dataclasses import dataclass
+import datetime
+from enum import Enum
+from typing import List
+
+
+class Priority(Enum):
+    HIGH = 0
+    MEDIUM = 1
+    LOW = 2
+
+    def __str__(self):
+        return self.name
+
+
+@dataclass
+class Task:
+    name: str
+    priority: Priority
+    due_date: datetime or None
+
+    def serialize(self):
+        if self.due_date:
+            due_date = self.due_date.strftime('%d-%m-%Y')
+        else:
+            due_date = None
+
+        return f"{self.name},{self.priority.value},{due_date}\n"
+
+
+def create_task_from_string(string: str):
+    name, priority, due_date = string.strip().split(",")
+    if due_date != "None":
+        due_date = datetime.datetime.strptime(due_date, "%d-%m-%Y")
+    else:
+        due_date = None
+    return Task(name, Priority(int(priority)), due_date)
+
+
+class TaskManager:
+    def __init__(self):
+        self.task_list: List[Task] = []
+
+    def add_task(self):
+        task_name = input("Task name: ")
+
+        priority = Priority(Priority.LOW)
+        while True:
+            priority_input = input("Priority (high=0, medium=1, low=2): ")
+            if priority_input.lower() not in ["0", "1", "2"]:
+                print("Invalid choice.")
+                continue
+
+            priority = Priority(int(priority_input))
+            break
+
+        due_date = None
+        while True:
+            inp = input("Does it have due date? (Y/N) ")
+            if inp.lower() not in ["y", "n"]:
+                print("Invalid choice.")
+                continue
+
+            if inp.lower() == "y":
+                while True:
+                    date_input = input("Due date (dd-MM-YYYY): ")
+                    try:
+                        due_date = datetime.datetime.strptime(date_input, "%d-%m-%Y")
+                        break
+                    except:
+                        print("Invalid input. Please enter date in format dd-MM-YYYY.")
+                        continue
+            break
+
+        task = Task(task_name, priority, due_date)
+        self.task_list.append(task)
+
+    def complete_task(self):
+        if len(self.task_list) == 0:
+            print("No active tasks.")
+            return
+
+        task_name = input("Enter name of task you want to complete >> ")
+
+        matched_task = None
+        for task in self.task_list:
+            if task_name.lower() == task.name.lower():
+                matched_task = task
+
+        if matched_task:
+            self.task_list.remove(matched_task)
+            print(f"Task {matched_task.name} completed.")
+        else:
+            print("This task does not exist.")
+
+    def show_tasks(self):
+        if len(self.task_list) == 0:
+            print("No active tasks.")
+            return
+
+        for task in self.task_list:
+            due_date: datetime = None
+            if task.due_date:
+                due_date = task.due_date.strftime("%d-%m-%Y")
+
+            print(f"Task: {task.name}, priority: {task.priority}, due date: {due_date}")
+
+    def save_tasks(self):
+        with open("tasks.txt", "w") as file:
+            file.writelines([task.serialize() for task in self.task_list])
+        print("Tasks saved.")
+
+    def load_tasks(self):
+        try:
+            with open("tasks.txt", "r") as file:
+                tasks = file.readlines()
+                self.task_list = [create_task_from_string(task) for task in tasks]
+
+            print("Tasks loaded.")
+        except IOError:
+            open("tasks.txt")
+
+    def start_manager(self):
+        print(f'''
+        Welcome to task manager
+        Type number and hit enter to perform action
+        Options:
+            1 - add task
+            2 - show tasks
+            3 - complete task
+            4 - save tasks
+            5 - load tasks
+            6 - quit
+        ''')
+
+        while True:
+            option = input("Enter your choice >> ")
+
+            match option:
+                case "1":
+                    self.add_task()
+                case "2":
+                    self.show_tasks()
+                case "3":
+                    self.complete_task()
+                case "4":
+                    self.save_tasks()
+                case "5":
+                    self.load_tasks()
+                case "6":
+                    print("Goodbye.")
+                    sys.exit()
+                case _:
+                    print("Invalid choice.")
+
+
+if __name__ == '__main__':
+    task_manager = TaskManager()
+    task_manager.start_manager()