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Sign-in

A real-time online sign-in system integrated into Discord with Firebase.

Structure of Firebase JSON

Example: firebase-structure.json.

The database is organized into three categories, corrections, log, and members:

  • corrections contains messages that members send to the database organizer to manually change something in the database.
  • log contains the meetings and subtract for each member
  • members contains data about each member

Screenshot when signing in

Screenshot when signing out

Firebase rules

Ensures that:

  • corrections/$membername has valid datetime keys (YY-MM-DD HH:mm)
  • log/$membername/meetings/$date has a valid date (YY-MM-DD) and valid start and end times (HH:mm:ss)
  • members/$membername has a Boolean board, a Boolean present, and a String discordId as children
  • All $membername in corrections or log are also in members
{
  "rules": {
    ".read": true,
    "corrections": {
      "$membername": {
        ".write": "root.child('members').hasChild($membername)",
        "$datetime": {
          ".validate": "$datetime.matches(/^\\d{2}\\-(0[1-9]|1[012])\\-(0[1-9]|[12][0-9]|3[01]) (2[0-3]|[0|1]\\d):[0-5]\\d$/)"
        }
      }
    },
    "log": {
      "$membername": {
        ".write": "root.child('members').hasChild($membername)",
        "meetings": {
          "$day": {
            ".validate": "$day.matches(/^\\d{2}\\-(0[1-9]|1[012])\\-(0[1-9]|[12][0-9]|3[01])$/)",
            "$endstart": {
              ".validate": "$endstart.matches(/^(start|end)(0|[1-9]\\d*)$/) && newData.isString() && newData.val().matches(/^(2[0-3]|[0|1]\\d):[0-5]\\d:[0-5]\\d$/)"
            }
          }
        }
      }
    },
    "members": {
      ".write": true,
      "$membername": {
        ".validate": "newData.hasChildren(['board', 'discordId', 'present'])",
        "board": {
          ".validate": "newData.isBoolean()"
        },
        "discordId": {
          ".validate": "newData.isString()"
        },
        "present": {
          ".validate": "newData.isBoolean()"
        }
      }
    }
  }
}

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A realtime online sign-in system

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