database.rules.json

{
  "rules": {
    ".write": false,
    
    "messages": {
      ".read": false,
      ".indexOn": ["email", "createdTimestamp"],
      
      "$messageId": {
        ".read": true,
        ".validate": "newData.hasChildren(['id', 'message', 'createdTimestamp'])",
        
        "id": {
          ".validate": "newData.val() === $messageId"
        },
        "message": {
          ".validate": "newData.isString() && newData.val().length <= 80"
        },
        "email": {
          ".validate": "newData.isString() && newData.val().matches(/^[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,4}$/i)"
        },
        "isPublished": {
          ".validate": "newData.isBoolean()"
        },
        "createdTimestamp": {
          ".validate": "newData.val() <= now"
        },
        "blockchainNetwork": {
          ".validate": "newData.isString()"
        },
        "blockchainTxId": {
          ".validate": "newData.isString()"
        },
        "clientIp": {
          ".validate": "newData.isString()"
        },
        "$other": {
          ".validate": false
        }
      }
    },
    
    "publishedMessages": {
      ".read": true,
      ".indexOn": ["createdTimestamp"],
      
      "$blockchainTxId": {
        ".validate": "newData.hasChildren(['message', 'createdTimestamp', 'blockchainTxId'])",
        
        "message": {
          ".validate": "newData.isString()"
        },
        "blockchainNetwork": {
          ".validate": "newData.isString()"
        },
        "blockchainTxId": {
          ".validate": "newData.val() == $blockchainTxId"
        },
        "createdTimestamp": {
          ".validate": "newData.val() <= now"
        },
        "$other": {
          ".validate": false
        }
      }
    },
    
    "processedDonations": {
      ".read": false,

      "$donationId": {
        ".validate": "newData.hasChildren(['id', 'email', 'amount', 'currency'])",

        "id": {
          ".validate": "newData.isString()"
        },
        "email": {
          ".validate": "newData.isString() && newData.val().matches(/^[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,4}$/i)"
        },
        "amount": {
          ".validate": "newData.isString()"
        },
        "currency": {
          ".validate": "newData.isString()"
        },
        "messageId": {
          ".validate": "newData.isString()"
        },
        "errorCode": {
          ".validate": "newData.isString()"
        },
        "errorMessage": {
          ".validate": "newData.isString()"
        },
        "$other": {
          ".validate": false
        }
      }

    }
  }
}