notes.txt

mongo "mongodb://todo-cluster-shard-00-00-uo9wx.mongodb.net:27017,todo-cluster-shard-00-01-uo9wx.mongodb.net:27017,todo-cluster-shard-00-02-uo9wx.mongodb.net:27017/test?replicaSet=todo-cluster-shard-0" --authenticationDatabase admin --ssl --username aayush123 --password todoapppass

When logging in, validate creds and send clientToken as response.
clientToken is salted hash of mongodb _id.
With every subsequent api request, client sends the clientToken and username.
validate salted hash of mongodb _id against received clientToken.
If authentication succeeds, process request. else, refuse request.

usecases:
- add tasks to project
- mark task as completed
- delete task
- add project
- delete project
- delete all completed tasks
- fetch all data
- sync all data

add project query:
db.todoList.update(
  {
    username:"testID"
  },
  {
    $push: {
      projects: {projectName: "TestProj2"}
    }
  }
);

add task query:
db.todoList.update(
  {
    username:"testID"
  },
  {
    $push: {
      tasks: {projectName: "TestProj2", taskName: "TestTask", completed: false}
    }
  }
);

delete project query:
db.todoList.update(
  {
    username:"testID"
  },
  {
    $pull: {
      projects: {projectName: "TestProj2"},
      tasks: {
        projectName: "TestProj2"
      }
    }
  }
);

delete task query:
db.todoList.update(
  {
    username:"testID"
  },
  {
    $pull: {
      tasks: {
        taskName: "TestTask"
      }
    }
  }
);

update task completion status of task:
db.todoList.update(
  {
    username:"testID",
    "tasks.taskName": "TestTask"
  },
  {
    $set: {
      "tasks.$.completed": true
    }
  }
);