{
    "$schema": "http://json-schema.org/draft-07/schema",
    "$id": "http://country-relationship.com/schema/country-relationship",
    "title": "Country Relationships",
    "type": "array",
    "items": {
        "type": "object",
        "properties": {
            "countryA": {     
                "$ref": "#/$defs/names"
            },
            "countryB":{
                "$ref": "#/$defs/names"
            },
            "relationship": {
                "$ref": "#/$defs/relationship"
            }
        },
        "required": ["countryA", "countryB", "relationship"]
    },
    "$defs": {
        "names": {
            "$schema": "http://json-schema.org/draft-07/schema",
            "$id": "#/$defs/names",
            "description": "The name of the country",
            "type":"string"
        },
        "relationship": {
            "$schema": "http://json-schema.org/draft-07/schema",
            "$id": "#/$defs/relationship",
            "type": "object",
            "properties": {
                "typeOfRel": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "allies",
                            "enemy",
                            "neutral",
                            "trade-partners"
                        ]
                    }
                },
                "startDate": {
                    "$ref": "#/$defs/date"
                },
                "endDate": {
                    "anyOf": [
                        { "$ref": "#/$defs/date" },
                        { "type": "null" }
                    ]
                },
                "description": {
                    "type": "string",
                    "description": "Description about the relationship and its significance."
                },
                "source": {
                    "type": "string",
                    "description": "The source of the information (e.g. news article, government report, etc.)"
                },
                "status": {
                    "type": "string",
                    "description": "The current status of the relationship (e.g. active, ended, on hold, etc.)"
                },
                "impact": {
                    "type": "string",
                    "description": "The potential impact of the relationship on other countries or regions"
                },
                "notes": {
                    "type": "string",
                    "description": "Any additional notes or comments related to the relationship"
                }
            },
            "required": [
                "typeOfRel",
                "startDate",
                "description"
            ]
        },
        "date": {
            "$schema": "http://json-schema.org/draft-07/schema",
            "$id": "#/$defs/date",
            "type": "string",
            "pattern": "^(0?[1-9]|[12][0-9]|3[01])[\/\\-](0?[1-9]|1[012])[\/\\-]\\d{4}$",
            "description": "The start and end Date of the relationship."
        }
    }
}

/**
The actual data valid for schema
[
  {
    "countryA": "USA",
    "countryB": "Russia",
    "relationship": {
      "typeOfRel": ["enemy"],
      "startDate": "01-01-2014",
      "endDate": null,
      "description": "Tensions have risen due to political differences and military actions.",
      "source": "CNN",
      "status": "active",
      "impact": "Potential for military conflict and economic sanctions.",
      "notes": "Recent cyberattacks attributed to Russian hackers have further strained relations."
    }
  },
  {
    "countryA": "Japan",
    "countryB": "South Korea",
    "relationship": {
      "typeOfRel": ["neutral", "trade-partners"],
      "startDate": "05-10-2015",
      "endDate": null,
      "description": "Despite historical tensions, economic ties between the two countries have strengthened in recent years.",
      "source": "BBC",
      "status": "active",
      "impact": "Positive economic benefits for both countries.",
      "notes": "However, some political disputes remain unresolved, including issues related to historical grievances."
    }
  }
]
**/