{
  "openapi": "3.0.1",
  "info": {
    "title": "Sample API",
    "description": "A set of helpers inspired by httpbin.org",
    "version": "0.1.0"
  },
  "servers": [
    {
      "url": "https://dev-tools.wso2.com/gs/helpers/v1.0"
    }
  ],
  "tags": [
    {
      "name": "echo",
      "description": "Echo data from the HTTP request"
    },
    {
      "name": "dynamic",
      "description": "Dynamic data generation"
    },
    {
      "name": "convert",
      "description": "Convert data across various formats"
    },
    {
      "name": "AI",
      "description": "Leverage AI to transform and validate data"
    }
  ],
  "paths": {
    "/ai/spelling": {
      "post": {
        "operationId": "postAiSpelling",
        "requestBody": {
          "content": {
            "application/json": {
              "schema": {
                "$ref": "#/components/schemas/ai_spelling_payload"
              }
            }
          },
          "required": true
        },
        "responses": {
          "200": {
            "description": "Ok",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ai_spelling_response"
                }
              }
            }
          },
          "400": {
            "description": "BadRequest",
            "content": {
              "application/json": {
                "schema": {
                  "oneOf": [
                    {
                      "$ref": "#/components/schemas/error_response"
                    },
                    {
                      "$ref": "#/components/schemas/ErrorPayload"
                    }
                  ]
                }
              }
            }
          },
          "500": {
            "description": "InternalServerError",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ErrorPayload"
                }
              }
            }
          }
        }
      }
    },
    "/base64/decode/{value}": {
      "post": {
        "tags": [
          "convert"
        ],
        "summary": "Decodes base64url-encoded string.",
        "parameters": [
          {
            "name": "value",
            "in": "path",
            "required": true,
            "schema": {
              "maxLength": 500,
              "pattern": "^[0-9a-zA-Z=]+$",
              "type": "string",
              "default": "QmFsbGVyaW5hIGlzIGF3ZXNvbWUh"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Decoded base64 content.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/base64_response"
                }
              }
            }
          },
          "400": {
            "$ref": "#/components/responses/error"
          }
        }
      }
    },
    "/base64/encode/{value}": {
      "post": {
        "tags": [
          "convert"
        ],
        "summary": "Base64 encode input string .",
        "parameters": [
          {
            "name": "value",
            "in": "path",
            "required": true,
            "schema": {
              "maxLength": 500,
              "pattern": "^[0-9a-zA-Z\\s!$-_]+$",
              "type": "string",
              "default": "Ballerina is awesome!"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Encoded base64 content.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/base64_response"
                }
              }
            }
          },
          "400": {
            "$ref": "#/components/responses/error"
          }
        }
      }
    },
    "/ip": {
      "get": {
        "tags": [
          "echo"
        ],
        "summary": "Returns the client IP address.",
        "responses": {
          "200": {
            "description": "Get the client IP address.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ip_response"
                }
              }
            }
          },
          "404": {
            "$ref": "#/components/responses/error"
          }
        }
      }
    },
    "/user-agent": {
      "get": {
        "tags": [
          "echo"
        ],
        "summary": "Return the User-Agent header value",
        "responses": {
          "200": {
            "description": "Get the request User-Agent header value.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ua_response"
                }
              }
            }
          },
          "404": {
            "$ref": "#/components/responses/error"
          }
        }
      }
    },
    "/uuid": {
      "get": {
        "tags": [
          "dynamic"
        ],
        "summary": "Returns a unique ID as per UUID v4 spec",
        "responses": {
          "200": {
            "description": "Get a UUID V4.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/uuid_response"
                }
              }
            }
          },
          "default": {
            "$ref": "#/components/responses/error"
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "ip_response": {
        "type": "object",
        "additionalProperties": false,
        "properties": {
          "origin": {
            "maxLength": 64,
            "pattern": "^[0-9\\.]+$",
            "type": "string"
          }
        }
      },
      "base64_response": {
        "type": "object",
        "additionalProperties": false,
        "properties": {
          "value": {
            "maxLength": 100,
            "pattern": "^[0-9\\.]+$",
            "type": "string"
          }
        }
      },
      "ua_response": {
        "type": "object",
        "additionalProperties": false,
        "properties": {
          "user-agent": {
            "maxLength": 1000,
            "pattern": "^[0-9a-zA-Z_\\-\\/,();\\.\\s]+$",
            "type": "string"
          }
        }
      },
      "uuid_response": {
        "type": "object",
        "additionalProperties": false,
        "properties": {
          "uuid": {
            "maxLength": 36,
            "minLength": 36,
            "pattern": "^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}$",
            "type": "string"
          }
        }
      },
      "error_response": {
        "type": "object",
        "additionalProperties": false,
        "properties": {
          "message": {
            "maxLength": 50,
            "type": "string"
          },
          "code": {
            "maxLength": 10,
            "type": "string"
          }
        }
      },
      "ai_spelling_payload": {
        "required": [
          "text"
        ],
        "type": "object",
        "properties": {
          "text": {
            "maxLength": 100,
            "pattern": "^[\\w\\s]+$",
            "type": "string"
          }
        }
      },
      "ai_spelling_response": {
        "required": [
          "correctedText"
        ],
        "type": "object",
        "properties": {
          "correctedText": {
            "maxLength": 150,
            "pattern": "^[\\w\\s]+$",
            "type": "string"
          }
        }
      },
      "ErrorPayload": {
        "required": [
          "message",
          "method",
          "path",
          "reason",
          "status",
          "timestamp"
        ],
        "type": "object",
        "properties": {
          "timestamp": {
            "type": "string"
          },
          "status": {
            "type": "integer",
            "format": "int64"
          },
          "reason": {
            "type": "string"
          },
          "message": {
            "type": "string"
          },
          "path": {
            "type": "string"
          },
          "method": {
            "type": "string"
          }
        }
      }
    },
    "responses": {
      "error": {
        "description": "Response for any error",
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/error_response"
            }
          }
        }
      }
    }
  }
}