{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "title": "Nanoc configuration schema",
  "type": "object",
  "properties": {
    "text_extensions": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "output_dir": {
      "type": "string"
    },
    "index_filenames": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "enable_output_diff": {
      "type": "boolean"
    },
    "prune": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "auto_prune": {
          "type": "boolean"
        },
        "exclude": {
          "type": "array",
          "items": {
            "type": "string"
          }
        }
      }
    },
    "commands_dirs": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "lib_dirs": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "data_sources": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "type": {
            "type": "string"
          },
          "items_root": {
            "anyOf": [
              { "type": "string" },
              { "type": "null" }
            ]
          },
          "layouts_root": {
            "anyOf": [
              { "type": "string" },
              { "type": "null" }
            ]
          }
        }
      }
    },
    "string_pattern_type": {
      "type": "string",
      "enum": ["glob", "legacy"]
    },
    "checks": {
      "type": "object",
      "properties": {
        "all": {
          "type": "object",
          "additionalProperties": false,
          "properties": {
            "exclude_files": {
              "type": "array",
              "items": {
                "type": "string"
              }
            }
          }
        },
        "internal_links": {
          "type": "object",
          "additionalProperties": false,
          "properties": {
            "exclude": {
              "type": "array",
              "items": {
                "type": "string"
              }
            }
          }
        },
        "external_links": {
          "type": "object",
          "additionalProperties": false,
          "properties": {
            "user_agent" : {
              "type": "string"
            },
            "exclude": {
              "type": "array",
              "items": {
                "type": "string"
              }
            },
            "exclude_files": {
              "type": "array",
              "items": {
                "type": "string"
              }
            }
          }
        }
      }
    },
    "environments": {
      "type": "object",
      "patternProperties": {
        "^.*$": {
          "type": "object"
        }
      }
    }
  }
}
