{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://emerald-legacy-launcher/schemas/args.json",
  "title": "ArgsSchema",
  "description": "Schema describing launcher command-line argument options, groups, and conditional dependencies.",
  "type": "object",
  "additionalProperties": false,
  "required": ["$schema", "groups", "options", "dependencies"],
  "properties": {
    "$schema": {
      "type": "string",
      "description": "URI of the JSON schema this file conforms to."
    },
    "schemaVersion": {
      "type": "integer",
      "const": 1,
      "description": "Version of the schema format. Currently always 1."
    },
    "meta": {
      "type": "object",
      "additionalProperties": true,
      "description": "Arbitrary metadata about this schema."
    },
    "groups": {
      "type": "array",
      "description": "Groups used to organize options.",
      "items": {
        "$ref": "#/$defs/schemaGroup"
      }
    },
    "options": {
      "type": "array",
      "description": "The command-line options.",
      "items": {
        "$ref": "#/$defs/schemaOption"
      }
    },
    "dependencies": {
      "type": "array",
      "description": "Conditional dependencies that disable or hide options.",
      "items": {
        "$ref": "#/$defs/schemaDependency"
      }
    }
  },
  "$defs": {
    "schemaGroup": {
      "type": "object",
      "additionalProperties": false,
      "required": ["id", "title"],
      "properties": {
        "id": {
          "type": "string",
          "description": "Unique identifier for the group."
        },
        "title": {
          "type": "string",
          "description": "Display title of the group."
        },
        "description": {
          "type": "string",
          "description": "Optional description of the group."
        }
      }
    },
    "schemaOption": {
      "type": "object",
      "additionalProperties": false,
      "required": ["id", "title", "type", "arg"],
      "properties": {
        "id": {
          "type": "string",
          "description": "Unique identifier for the option."
        },
        "title": {
          "type": "string",
          "description": "Display title of the option."
        },
        "type": {
          "enum": ["boolean", "int", "number", "string", "choice"],
          "description": "The kind of value the option accepts."
        },
        "arg": {
          "type": "string",
          "description": "The command-line argument string emitted for this option."
        },
        "description": {
          "type": "string",
          "description": "Optional human-readable description."
        },
        "group": {
          "type": "string",
          "description": "Identifier of the group this option belongs to."
        },
        "default": {
          "description": "Default value for the option. Must match the option's type."
        },
        "min": {
          "type": "number",
          "description": "Minimum value for int/number options."
        },
        "max": {
          "type": "number",
          "description": "Maximum value for int/number options."
        },
        "step": {
          "type": "number",
          "description": "Stepping increment for int/number options."
        },
        "placeholder": {
          "type": "string",
          "description": "Placeholder text for string options."
        },
        "choices": {
          "type": "array",
          "description": "Allowed choices. Required and must be non-empty when type is 'choice'.",
          "minItems": 1,
          "items": {
            "$ref": "#/$defs/schemaChoice"
          }
        }
      },
      "allOf": [
        {
          "if": {
            "properties": {
              "type": { "const": "choice" }
            },
            "required": ["type"]
          },
          "then": {
            "required": ["choices"]
          }
        },
        {
          "if": {
            "properties": {
              "type": { "const": "boolean" }
            },
            "required": ["type"]
          },
          "then": {
            "properties": {
              "default": { "type": "boolean" }
            }
          }
        },
        {
          "if": {
            "properties": {
              "type": { "const": "string" }
            },
            "required": ["type"]
          },
          "then": {
            "properties": {
              "default": { "type": "string" }
            }
          }
        }
      ]
    },
    "schemaChoice": {
      "type": "object",
      "additionalProperties": false,
      "required": ["value"],
      "properties": {
        "value": {
          "type": "string",
          "description": "The value stored/emitted for this choice."
        },
        "label": {
          "type": "string",
          "description": "Optional display label. Defaults to the value."
        }
      }
    },
    "schemaDependency": {
      "type": "object",
      "additionalProperties": false,
      "required": ["target", "when"],
      "properties": {
        "target": {
          "type": "string",
          "description": "Identifier of the option affected by this dependency."
        },
        "when": {
          "$ref": "#/$defs/condition",
          "description": "Condition that, when true, applies the effect."
        },
        "effect": {
          "enum": ["disable", "hide"],
          "description": "Whether the target option is disabled or hidden. Defaults to 'disable'."
        }
      }
    },
    "condition": {
      "oneOf": [
        {
          "type": "object",
          "additionalProperties": false,
          "required": ["option"],
          "properties": {
            "option": {
              "type": "string",
              "description": "Identifier of the option to inspect."
            },
            "equals": {
              "description": "True when the option value strictly equals this."
            },
            "in": {
              "type": "array",
              "description": "True when the option value is one of these.",
              "items": true
            },
            "not": {
              "description": "True when the option value is not strictly equal to this."
            },
            "exists": {
              "type": "boolean",
              "description": "True when the option value is present (or absent when false)."
            }
          }
        },
        {
          "type": "object",
          "additionalProperties": false,
          "required": ["all"],
          "properties": {
            "all": {
              "type": "array",
              "minItems": 1,
              "items": { "$ref": "#/$defs/condition" }
            }
          }
        },
        {
          "type": "object",
          "additionalProperties": false,
          "required": ["any"],
          "properties": {
            "any": {
              "type": "array",
              "minItems": 1,
              "items": { "$ref": "#/$defs/condition" }
            }
          }
        },
        {
          "type": "object",
          "additionalProperties": false,
          "required": ["not"],
          "properties": {
            "not": { "$ref": "#/$defs/condition" }
          }
        }
      ]
    }
  }
}