{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/MessageContent",
  "title": "MessageContent",
  "type": "object",
  "description": "The content of the message. The structure depends on the message type.",
  "properties": {
    "text": {
      "type": "string",
      "description": "The text content of the message, used when type is text."
    },
    "image": {
      "type": "object",
      "description": "The image content, used when type is image.",
      "properties": {
        "url": {
          "type": "string",
          "format": "uri",
          "description": "The URL of the image."
        },
        "caption": {
          "type": "string",
          "description": "An optional caption for the image."
        }
      }
    },
    "video": {
      "type": "object",
      "description": "The video content, used when type is video.",
      "properties": {
        "url": {
          "type": "string",
          "format": "uri",
          "description": "The URL of the video."
        },
        "caption": {
          "type": "string",
          "description": "An optional caption for the video."
        }
      }
    },
    "audio": {
      "type": "object",
      "description": "The audio content, used when type is audio.",
      "properties": {
        "url": {
          "type": "string",
          "format": "uri",
          "description": "The URL of the audio file."
        }
      }
    },
    "file": {
      "type": "object",
      "description": "The file content, used when type is file.",
      "properties": {
        "url": {
          "type": "string",
          "format": "uri",
          "description": "The URL of the file."
        },
        "caption": {
          "type": "string",
          "description": "An optional caption for the file."
        }
      }
    },
    "location": {
      "type": "object",
      "description": "The location content, used when type is location.",
      "properties": {
        "latitude": {
          "type": "number",
          "format": "double",
          "description": "The latitude coordinate."
        },
        "longitude": {
          "type": "number",
          "format": "double",
          "description": "The longitude coordinate."
        }
      }
    },
    "hsm": {
      "type": "object",
      "description": "The HSM (Highly Structured Message) template content, used for WhatsApp template messages.",
      "properties": {
        "namespace": {
          "type": "string",
          "description": "The namespace of the template."
        },
        "templateName": {
          "type": "string",
          "description": "The name of the template."
        },
        "language": {
          "type": "object",
          "properties": {
            "policy": {
              "type": "string",
              "description": "The language policy."
            },
            "code": {
              "type": "string",
              "description": "The language code."
            }
          }
        },
        "params": {
          "type": "array",
          "description": "The template parameters.",
          "items": {
            "type": "object",
            "properties": {
              "default": {
                "type": "string",
                "description": "The default value for the parameter."
              }
            }
          }
        }
      }
    }
  }
}