{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "fastlane_response.schema.json",
  "title": "Fastlane Claude Response",
  "description": "Zwei Modi: 'form' = Claude braucht Eingaben (flutter_form_builder Formular). 'result' = Claude liefert Ergebnis (HTML + Intents + Code).",
  "type": "object",
  "properties": {

    "response_type": {
      "type": "string",
      "enum": ["form", "result"]
    },

    "message": {
      "type": "string",
      "description": "Bei 'form': warum Eingaben noetig. Bei 'result': Zusammenfassung."
    },

    "form": {
      "$ref": "#/$defs/FormDefinition"
    },

    "intents": {
      "type": "array",
      "items": { "$ref": "#/$defs/Intent" }
    },

    "html_content": {
      "type": ["string", "null"],
      "maxLength": 100000
    },

    "code_blocks": {
      "type": "array",
      "items": { "$ref": "#/$defs/CodeBlock" }
    },

    "metadata": {
      "$ref": "#/$defs/ResponseMetadata"
    }
  },

  "required": ["response_type", "message"],
  "if": { "properties": { "response_type": { "const": "form" } } },
  "then": { "required": ["response_type", "message", "form"] },
  "additionalProperties": false,

  "$defs": {

    "FormDefinition": {
      "type": "object",
      "properties": {
        "title": { "type": "string" },
        "description": { "type": ["string", "null"] },
        "fields": {
          "type": "array",
          "minItems": 1,
          "items": { "$ref": "#/$defs/FormField" }
        },
        "submit_label": { "type": "string", "default": "Absenden" },
        "cancel_label": { "type": ["string", "null"] },
        "autovalidate_mode": {
          "type": "string",
          "enum": ["disabled", "always", "on_user_interaction"],
          "default": "on_user_interaction"
        },
        "layout": {
          "type": "string",
          "enum": ["vertical", "stepper", "sections"],
          "default": "vertical"
        },
        "sections": {
          "type": ["array", "null"],
          "items": {
            "type": "object",
            "properties": {
              "title": { "type": "string" },
              "description": { "type": ["string", "null"] },
              "icon": { "type": ["string", "null"] },
              "field_names": { "type": "array", "items": { "type": "string" } }
            },
            "required": ["title", "field_names"]
          }
        }
      },
      "required": ["title", "fields"]
    },

    "FormField": {
      "type": "object",
      "properties": {
        "name": {
          "type": "string",
          "pattern": "^[a-z][a-z0-9_]*$"
        },
        "widget": {
          "type": "string",
          "enum": [
            "text_field",
            "dropdown",
            "date_time_picker",
            "date_range_picker",
            "checkbox",
            "checkbox_group",
            "radio_group",
            "switch_field",
            "slider",
            "range_slider",
            "choice_chip",
            "filter_chip",
            "segmented_control",
            "typeahead"
          ]
        },
        "label": { "type": "string" },
        "hint_text": { "type": ["string", "null"] },
        "helper_text": { "type": ["string", "null"] },
        "prefix_icon": { "type": ["string", "null"] },
        "initial_value": {},
        "enabled": { "type": "boolean", "default": true },
        "read_only": { "type": "boolean", "default": false },
        "validators": {
          "type": "array",
          "items": { "$ref": "#/$defs/Validator" }
        },
        "options": {
          "type": ["array", "null"],
          "items": { "$ref": "#/$defs/FieldOption" }
        },
        "text_field_config": { "$ref": "#/$defs/TextFieldConfig" },
        "date_config": { "$ref": "#/$defs/DateConfig" },
        "slider_config": { "$ref": "#/$defs/SliderConfig" },
        "conditional": { "$ref": "#/$defs/ConditionalRule" }
      },
      "required": ["name", "widget", "label"]
    },

    "Validator": {
      "type": "object",
      "properties": {
        "type": {
          "type": "string",
          "enum": [
            "required",
            "min", "max",
            "min_length", "max_length",
            "min_words_count", "max_words_count",
            "email", "url", "ip",
            "match",
            "numeric", "integer",
            "credit_card",
            "date_string",
            "equal", "not_equal",
            "between",
            "contains", "not_contains",
            "ends_with", "starts_with",
            "has_uppercase_chars", "has_lowercase_chars",
            "has_numeric_chars", "has_special_chars",
            "file_extension", "file_size",
            "conditional"
          ]
        },
        "value": { "description": "Parameter (z.B. 70 fuer max, 3 fuer min_length, Regex fuer match)." },
        "value2": { "description": "Zweiter Parameter (z.B. Obergrenze fuer between)." },
        "error_text": { "type": ["string", "null"] }
      },
      "required": ["type"]
    },

    "FieldOption": {
      "type": "object",
      "properties": {
        "value": { "type": "string" },
        "label": { "type": "string" },
        "icon": { "type": ["string", "null"] },
        "enabled": { "type": "boolean", "default": true },
        "group": { "type": ["string", "null"] }
      },
      "required": ["value", "label"]
    },

    "TextFieldConfig": {
      "type": "object",
      "properties": {
        "keyboard_type": {
          "type": "string",
          "enum": ["text", "multiline", "number", "phone", "email_address", "url", "datetime", "visible_password"],
          "default": "text"
        },
        "max_lines": { "type": "integer", "minimum": 1, "default": 1 },
        "min_lines": { "type": ["integer", "null"], "minimum": 1 },
        "obscure_text": { "type": "boolean", "default": false },
        "autocorrect": { "type": "boolean", "default": true },
        "text_capitalization": {
          "type": "string",
          "enum": ["none", "words", "sentences", "characters"],
          "default": "none"
        },
        "input_formatters": {
          "type": ["array", "null"],
          "items": {
            "type": "object",
            "properties": {
              "type": { "type": "string", "enum": ["digits_only", "allow", "deny", "mask"] },
              "pattern": { "type": ["string", "null"] }
            },
            "required": ["type"]
          }
        }
      }
    },

    "DateConfig": {
      "type": "object",
      "properties": {
        "input_type": { "type": "string", "enum": ["date", "time", "both"], "default": "date" },
        "first_date": { "type": ["string", "null"], "format": "date" },
        "last_date": { "type": ["string", "null"], "format": "date" },
        "format": { "type": ["string", "null"], "default": "dd.MM.yyyy" },
        "locale": { "type": ["string", "null"] }
      }
    },

    "SliderConfig": {
      "type": "object",
      "properties": {
        "min": { "type": "number" },
        "max": { "type": "number" },
        "divisions": { "type": ["integer", "null"] },
        "display_values": { "type": "string", "enum": ["current", "min_max", "all", "none"], "default": "current" },
        "number_format": { "type": ["string", "null"] }
      },
      "required": ["min", "max"]
    },

    "ConditionalRule": {
      "type": "object",
      "properties": {
        "field_name": { "type": "string" },
        "operator": {
          "type": "string",
          "enum": ["equals", "not_equals", "contains", "not_contains", "greater_than", "less_than", "is_empty", "is_not_empty", "in_list"]
        },
        "value": {},
        "action": { "type": "string", "enum": ["show", "hide", "enable", "disable"], "default": "show" }
      },
      "required": ["field_name", "operator"]
    },

    "Intent": {
      "type": "object",
      "properties": {
        "action": { "type": "string", "enum": ["navigate", "display", "confirm", "refresh", "notify"] },
        "target": { "type": ["string", "null"] },
        "params": { "type": "object", "additionalProperties": true },
        "label": { "type": ["string", "null"] }
      },
      "required": ["action"]
    },

    "CodeBlock": {
      "type": "object",
      "properties": {
        "execution_type": { "type": "string", "enum": ["python", "graphql", "odata"] },
        "code": { "type": "string", "minLength": 1, "maxLength": 50000 },
        "description": { "type": ["string", "null"] },
        "variables": { "type": ["object", "null"], "additionalProperties": true },
        "idempotent": { "type": "boolean", "default": true }
      },
      "required": ["execution_type", "code"]
    },

    "ResponseMetadata": {
      "type": "object",
      "properties": {
        "domain": { "type": "string", "enum": ["fleet", "energy", "logistics", "hr", "finance", "general"] },
        "confidence": { "type": "number", "minimum": 0.0, "maximum": 1.0 },
        "requires_confirmation": { "type": "boolean", "default": false },
        "estimated_records": { "type": "integer", "minimum": 0 },
        "tags": { "type": "array", "items": { "type": "string" } }
      },
      "additionalProperties": true
    }
  }
}