{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "required": [
    "_id",
    "__v",
    "avatar",
    "createdAt",
    "email",
    "favorites",
    "isActive",
    "lastLogin",
    "name",
    "password",
    "preferences",
    "role",
    "stats",
    "updatedAt",
    "username"
  ],
  "properties": {
    "_id": {
      "$ref": "#/$defs/ObjectId"
    },
    "__v": {
      "type": "integer"
    },
    "avatar": {
      "type": "string"
    },
    "createdAt": {
      "$ref": "#/$defs/Date"
    },
    "email": {
      "type": "string"
    },
    "favorites": {
      "type": "array",
      "items": {
        "type": []
      }
    },
    "isActive": {
      "type": "boolean"
    },
    "lastLogin": {
      "$ref": "#/$defs/Date"
    },
    "name": {
      "type": "string"
    },
    "password": {
      "type": "string"
    },
    "preferences": {
      "type": "object",
      "required": [
        "notifications",
        "theme"
      ],
      "properties": {
        "notifications": {
          "type": "boolean"
        },
        "theme": {
          "type": "string"
        }
      }
    },
    "role": {
      "type": "string"
    },
    "stats": {
      "type": "object",
      "required": [
        "averageScore",
        "bestScore",
        "quizzesTaken",
        "totalPoints",
        "totalQuizzes"
      ],
      "properties": {
        "averageScore": {
          "type": "integer"
        },
        "bestScore": {
          "type": "integer"
        },
        "quizzesTaken": {
          "type": "integer"
        },
        "totalPoints": {
          "type": "integer"
        },
        "totalQuizzes": {
          "type": "integer"
        }
      }
    },
    "updatedAt": {
      "$ref": "#/$defs/Date"
    },
    "username": {
      "type": "string"
    }
  },
  "$defs": {
    "ObjectId": {
      "type": "object",
      "properties": {
        "$oid": {
          "type": "string",
          "pattern": "^[0-9a-fA-F]{24}$"
        }
      },
      "required": [
        "$oid"
      ],
      "additionalProperties": false
    },
    "Date": {
      "type": "object",
      "properties": {
        "$date": {
          "type": "string",
          "format": "date-time"
        }
      },
      "required": [
        "$date"
      ],
      "additionalProperties": false
    }
  }
}