task_queue.py

from task import Task


class TaskQueue:
    def __init__(self):
        self.queue = []
        self.length = 0

    def print(self):
        for task in self.queue:
            task.print()
            print()

    def isEmpty(self):
        return self.length == 0

    def export_schedule_tuple(self):
        return tuple(self.queue)

    def insert(self, task):
        if self.length != 0:
            for i in range(self.length):
                if task.compare_remind_time(self.queue[i]) < 0:
                    self.queue.insert(i, task)
                    self.length += 1
                    return
        # if queue empty or cannot be inserted in the middle
        # just insert it at the end
        self.queue.append(task)
        self.length += 1

    def remove(self, index):
        if index >= self.length:
            return None
        for i in range(self.length):
            if i == index:
                taskObj = self.queue[i]
                del self.queue[i]
                self.length -= 1
        return taskObj

    def dequeue(self):
        return self.remove(0)

    def peek(self):
        if self.isEmpty():
            return None
        return self.queue[0]

    def peek_at(self, index):
        if index >= self.length:
            return None
        return self.queue[index]


if __name__ == '__main__':
    q = TaskQueue()

    q.insert(Task("9:59 PM", "T 1"))
    q.insert(Task("9:57 PM", "T 2"))
    q.insert(Task("9:51 PM", "T 3"))
    q.insert(Task("9:54 PM", "T 4"))

    task = q.peek_at(1)
    task.update_details_description("test description")
    task.update_details_end_time("3 PM")
    task.update_details_start_time("11 AM")
    # Dispatcher().dispatch_reminder(task)
    print("\nQueue :-\n")
    q.print()