{
  "openapi": "3.0.0",
  "info": {
    "title": "Blog API Documentation",
    "version": "1.0.0",
    "description": "API documentation for the Blog CRUD application"
  },
  "tags": [
    {
      "name": "Blog CRUD",
      "description": "Operations related to managing blogs"
    },
    {
      "name": "Category CRUD",
      "description": "Operations related to managing categories"
    }
  ],

  "servers": [
    {
      "url": "http://localhost:4000"
    }
  ],
  "paths": {
    "/blogs": {
      "get": {
        "tags": ["Blog CRUD"],
        "summary": "Retrieve all blogs",
        "responses": {
          "200": {  
            "description": "A list of blogs",
            "content": {
              "application/json": {
                "schema": {
                  "type": "array",
                  "items": {
                    "$ref": "#/components/schemas/Blog"
                  }
                }
              }
            }
          }
        }
      },
      "post": {
        "tags": ["Blog CRUD"],
        "summary": "Create a new blog",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "$ref": "#/components/schemas/Blog"
              }
            }
          }
        },
        "responses": {
          "201": {
            "description": "Blog created successfully"
          }
        }
      }
    },
    "/blogs/{slug}": {
      "get": {
        "summary": "Retrieve a blog by slug",
        "parameters": [
          {
            "in": "path",
            "name": "slug",
            "required": true,
            "schema": {
              "type": "string"
            },
            "description": "The slug of the blog"
          }
        ],
        "responses": {
          "200": {
            "description": "A single blog",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Blog"
                }
              }
            }
          },
          "404": {
            "description": "Blog not found"
          }
        }
      },
      "put": {
        "summary": "Update a blog by slug",
        "parameters": [
          {
            "in": "path",
            "name": "slug",
            "required": true,
            "schema": {
              "type": "string"
            },
            "description": "The slug of the blog to update"
          }
        ],
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "$ref": "#/components/schemas/Blog"
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Blog updated successfully"
          }
        }
      },
      "delete": {
        "summary": "Delete a blog by slug",
        "parameters": [
          {
            "in": "path",
            "name": "slug",
            "required": true,
            "schema": {
              "type": "string"
            },
            "description": "The slug of the blog to delete"
          }
        ],
        "responses": {
          "204": {
            "description": "Blog deleted successfully"
          }
        }
      }
    },
    "/categories": {
      "get": {
        "summary": "Retrieve all categories",
        "responses": {
          "200": {
            "description": "A list of categories",
            "content": {
              "application/json": {
                "schema": {
                  "type": "array",
                  "items": {
                    "$ref": "#/components/schemas/Category"
                  }
                }
              }
            }
          }
        }
      },
      "post": {
        "summary": "Create a new category",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "$ref": "#/components/schemas/Category"
              }
            }
          }
        },
        "responses": {
          "201": {
            "description": "Category created successfully"
          }
        }
      }
    },
    "/categories/{id}": {
      "put": {
        "summary": "Update a category",
        "parameters": [
          {
            "in": "path",
            "name": "id",
            "required": true,
            "schema": {
              "type": "integer"
            },
            "description": "The ID of the category to update"
          }
        ],
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "$ref": "#/components/schemas/Category"
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Category updated successfully"
          }
        }
      },
      "delete": {
        "summary": "Delete a category",
        "parameters": [
          {
            "in": "path",
            "name": "id",
            "required": true,
            "schema": {
              "type": "integer"
            },
            "description": "The ID of the category to delete"
          }
        ],
        "responses": {
          "204": {
            "description": "Category deleted successfully"
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "Blog": {
        "type": "object",
        "required": ["slug", "title", "body"],
        "properties": {
          "slug": {
            "type": "string",
            "description": "Unique identifier for the blog"
          },
          "title": {
            "type": "string",
            "description": "The title of the blog"
          },
          "body": {
            "type": "string",
            "description": "The content of the blog"
          },
          "categoryIDs": {
            "type": "array",
            "items": {
              "type": "integer"
            }
          },
          "tagIDs": {
            "type": "array",
            "items": {
              "type": "integer"
            }
          }
        }
      },
      "Category": {
        "type": "object",
        "required": ["name"],
        "properties": {
          "name": {
            "type": "string",
            "description": "The name of the category"
          }
        }
      }
    }
  }
}