0x00. AirBnB clone - The console

##Description

This project is about to deploy a simple clone of the AirBnB website - hBnB. The web application will be composed by:

• A command interpreter to manipulate data without a visual interface, like a shell (for development and debugging)
• A website (front-end) that show the final product to everyone: static and dynamic
• A database or files that store data
• An API that provides a communication interface between the front-end and your data (retrieve, create, delete and update them)

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Final Product

Step 1: The Console

• Create a data model
• Manage (create, update, destroy, etc) objects via a console/command interpreter
• Store and persist objects to files (JSON files)

The first step is to manipulate a powerful storage system. This storage engine will give an abstraction between objects and how they are stored and persisted.

Commands

Commands	Description
quit	Quits the console
Ctrl+D	Quits the console
help or help <command>	Displays all commands or Displays instructions for a specific command
create <class>	Creates an object of type , saves it to a JSON file, and prints the objects ID
show <class> <ID>	Shows string representation of an object
destroy <class> <ID>	Deletes an objects
all or all <class>	Prints all string representations of all objects or Prints all string representations of all objects of a specific class
update <class> <id> <attribute name> "<attribute value>"	Updates an object with a certain attribute (new or existing)
<class>.all()	Same as all <class>
<class>.count()	Retrieves the number of objects of a certain class
<class>.show(<ID>)	Same as show <class> <ID>
<class>.destroy(<ID>)	Same as destroy <class> <ID>
<class>.update(<ID>, <attribute name>, <attribute value>	Same as update <class> <ID> <attribute name> <attribute value>
<class>.update(<ID>, <dictionary representation>)	Updates an objects based on a dictionary representation of attribute names and values

Updates an objects based on a dictionary representation of attribute names and values

More Info

Execution

Your shell should work like this in interactive mode:

andrecast@MED-PF1NQ8WJ:~/AirBnB_clone$ ./console.py 
(hbnb) help

Documented commands (type help <topic>):
========================================
EOF  all  create  destroy  help  quit  show  update

(hbnb) 
(hbnb) 
(hbnb) quit
andrecast@MED-PF1NQ8WJ:~/AirBnB_clone$

But also in non-interactive mode: (like the Shell project in C)

andrecast@MED-PF1NQ8WJ:~/AirBnB_clone$  echo "help" | ./console.py
(hbnb) 
Documented commands (type help <topic>):
========================================
EOF  all  create  destroy  help  quit  show  update

(hbnb) andrecast@MED-PF1NQ8WJ:~/AirBnB_clone$ 

Examples

andrecast@MED-PF1NQ8WJ:~/AirBnB_clone$ ./console.py 
(hbnb) all MyModel
** class doesn't exist **
(hbnb) show BaseModel
** instance id missing **
(hbnb) show BaseModel Holberton
** no instance found **
(hbnb) create BaseModel
04cd8bf8-6d4d-456c-8e79-ccc5a0a18241
(hbnb) all BaseModel
["[BaseModel] (04cd8bf8-6d4d-456c-8e79-ccc5a0a18241) {'id': '04cd8bf8-6d4d-456c-8e79-ccc5a0a18241', 'created_at': datetime.datetime(2021, 6, 30, 18, 28, 9, 697291), 'updated_at': datetime.datetime(2021, 6, 30, 18, 28, 9, 697301)}"]
(hbnb) destroy
** class name missing **
(hbnb) update BaseModel 04cd8bf8-6d4d-456c-8e79-ccc5a0a18241
** attribute name missing **
(hbnb) update BaseModel 04cd8bf8-6d4d-456c-8e79-ccc5a0a18241 first_name "Betty"
(hbnb) show BaseModel 04cd8bf8-6d4d-456c-8e79-ccc5a0a18241
[BaseModel] (04cd8bf8-6d4d-456c-8e79-ccc5a0a18241) {'id': '04cd8bf8-6d4d-456c-8e79-ccc5a0a18241', 'created_at': datetime.datetime(2021, 6, 30, 18, 28, 9, 697291), 'updated_at': datetime.datetime(2021, 6, 30, 18, 28, 9, 697301), 'first_name': 'Betty'}
(hbnb) create BaseModel
6e3efe4b-1cef-48f7-9275-d71e29406b1f
(hbnb) all BaseModel
["[BaseModel] (04cd8bf8-6d4d-456c-8e79-ccc5a0a18241) {'id': '04cd8bf8-6d4d-456c-8e79-ccc5a0a18241', 'created_at': datetime.datetime(2021, 6, 30, 18, 28, 9, 697291), 'updated_at': datetime.datetime(2021, 6, 30, 18, 28, 9, 697301), 'first_name': 'Betty'}", "[BaseModel] (6e3efe4b-1cef-48f7-9275-d71e29406b1f) {'id': '6e3efe4b-1cef-48f7-9275-d71e29406b1f', 'created_at': datetime.datetime(2021, 6, 30, 18, 29, 51, 641764), 'updated_at': datetime.datetime(2021, 6, 30, 18, 29, 51, 641773)}"]
(hbnb) destroy BaseModel 04cd8bf8-6d4d-456c-8e79-ccc5a0a18241
(hbnb) show BaseModel 04cd8bf8-6d4d-456c-8e79-ccc5a0a18241
** no instance found **

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Authors

• Brian Zapata - (https://www.github.com/brian-1989)
• Andrea Castrillón - (https://www.github.com/Andrecast)