{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://sdml.io/v/doc-book-schema.json",
  "title": "Schema for the SDML 'doc-book' configuration file.",
  "type": "object",
  "properties": {
    "title": {
      "description": "Overall title for output.",
      "type": "string"
    },
    "introduction": {
      "description": "Optional path to include introduction content.",
      "type": "string"
    },
    "content": {
      "description": "The primary content section.",
      "type": "object",
      "$ref": "#/$defs/content_section"
    },
    "output_format": {
      "description": "The format of the generated output.",
      "type": "string",
      "enum": [ "org-mode" ]
    },
    "output_file": {
      "description": "The path of the file to generate.",
      "type": "string"
    },
    "language": {
      "description": "A BCP-47 language-tag to identify the output language.",
      "type": "string"
    },
    "options": {
      "type": "object",
      "$ref": "#/$defs/options"
    }
  },
  "required": [
    "title",
    "content"
  ],
  "$defs": {
    "include_file": {
      "description": "The path to a file of content to include.",
      "type": "object",
      "properties": {
        "include_file_path": {
          "description": "File path",
          "type": "string"
        }
      },
      "required": [
        "include_file_path"
      ]
    },
    "include_module": {
      "description": "Include the description of a module, by module name.",
      "type": "object",
      "properties": {
        "module": {
          "description": "Module name",
          "type": "string"
        }
      },
      "required": [
        "module"
      ]
    },
    "include_module_by_path": {
      "description": "Include the description of a module, by the module's file path.",
      "type": "object",
      "properties": {
        "module_path": {
          "description": "File path",
          "type": "string"
        }
      },
      "required": [
        "module_path"
      ]
    },
    "include_sub_section": {
      "description": "A sub-section of content.",
      "type": "object",
      "properties": {
        "sub_section": {
          "description": "Section content",
          "$ref": "#/$defs/content_section"
        }
      },
      "required": [
        "sub_section"
      ]
    },
    "content_section": {
      "description": "A content section is a named array of items.",
      "properties": {
        "heading": {
          "description": "The heading text for this section.",
          "type": "string"
        },
        "items": {
          "description": "The array of unique items to include.",
          "type": "array",
          "items": {
            "type": "object",
            "$ref": "#/$defs/content_item"
          }
        },
        "uniqueItems": true
      },
      "required": [
        "heading"
      ]
    },
    "content_item": {
      "type": "object",
      "oneOf": [
        { "$ref": "#/$defs/include_file" },
        { "$ref": "#/$defs/include_module" },
        { "$ref": "#/$defs/include_module_by_path" },
        { "$ref": "#/$defs/include_sub_section" }
      ]
    },
    "options": {
      "type": "object",
      "properties": {
        "include_toc": {
          "description": "Include a table of contents, defaults to true.",
          "type": "boolean"
        },
        "multi_part": {
          "description": "Generate as a multi-part output, defaults to true.",
          "type": "boolean"
        },
        "copy_includes": {
          "description": "Copy any included file into the output directory, defaults to false.",
          "type": "boolean"
        },
        "skip_dependency_graphs": {
          "description": "Skip generation of dependency graph appendices, defaults to false.",
          "type": "boolean"
        },
        "skip_sdml_listings": {
          "description": "Skip generation of SDML Source listing appendices, defaults to false.",
          "type": "boolean"
        },
        "skip_rdf_listings": {
          "description": "Skip generation of RDF listing appendices, defaults to false.",
          "type": "boolean"
        }
      }
    }
  }
}