## Status code
|Status code|Meaning                                                  |
|-----------|---------------------------------------------------------|
|`200`      |Successful                                               |
|`201`      |Something create (account, visit, patient, etc)          |
|`400`      |Somthing's wrong (Usually bugs)                          |
|`403`      |You have no permission (permission = false in role table)|
|`409`      |Some kind of conflict                                    |
|`497`      |Token does not exist                                     |
|`498`      |Token expired                                            |
|`499`      |You have not provide token to me                         |

## Permissions
### Rules on creating new permission
- nouns should be singular
- If the action are listed in the following table, it must start with their corresponding prefix

    | Action               | Prefix | Example       |
    |----------------------|--------|---------------|
    | add/create/insert    |`add`   |`add_patient`  |
    | delete/remove/revoke |`delete`|`delete_token` |
    | read/get/see/check   |`get`   |`get_inventory`|
    | modify/update/edit   |`edit`  |`edit_any_user`|