import { inspect } from '../../jsutils/inspect.mjs';
import { keyMap } from '../../jsutils/keyMap.mjs';
import { GraphQLError } from '../../error/GraphQLError.mjs';
import { Kind } from '../../language/kinds.mjs';
import { print } from '../../language/printer.mjs';
import { isRequiredArgument, isType } from '../../type/definition.mjs';
import { specifiedDirectives } from '../../type/directives.mjs';

/**
 * Provided required arguments
 *
 * A field or directive is only valid if all required (non-null without a
 * default value) field arguments have been provided.
 */
export function ProvidedRequiredArgumentsRule(context) {
  return {
    // eslint-disable-next-line new-cap
    ...ProvidedRequiredArgumentsOnDirectivesRule(context),
    Field: {
      // Validate on leave to allow for deeper errors to appear first.
      leave(fieldNode) {
        var _fieldNode$arguments;

        const fieldDef = context.getFieldDef();

        if (!fieldDef) {
          return false;
        }

        const providedArgs = new Set( // FIXME: https://github.com/graphql/graphql-js/issues/2203
          /* c8 ignore next */
          (_fieldNode$arguments = fieldNode.arguments) === null ||
          _fieldNode$arguments === void 0
            ? void 0
            : _fieldNode$arguments.map((arg) => arg.name.value),
        );

        for (const argDef of fieldDef.args) {
          if (!providedArgs.has(argDef.name) && isRequiredArgument(argDef)) {
            const argTypeStr = inspect(argDef.type);
            context.reportError(
              new GraphQLError(
                `Field "${fieldDef.name}" argument "${argDef.name}" of type "${argTypeStr}" is required, but it was not provided.`,
                {
                  nodes: fieldNode,
                },
              ),
            );
          }
        }
      },
    },
  };
}
/**
 * @internal
 */

export function ProvidedRequiredArgumentsOnDirectivesRule(context) {
  var _schema$getDirectives;

  const requiredArgsMap = Object.create(null);
  const schema = context.getSchema();
  const definedDirectives =
    (_schema$getDirectives =
      schema === null || schema === void 0
        ? void 0
        : schema.getDirectives()) !== null && _schema$getDirectives !== void 0
      ? _schema$getDirectives
      : specifiedDirectives;

  for (const directive of definedDirectives) {
    requiredArgsMap[directive.name] = keyMap(
      directive.args.filter(isRequiredArgument),
      (arg) => arg.name,
    );
  }

  const astDefinitions = context.getDocument().definitions;

  for (const def of astDefinitions) {
    if (def.kind === Kind.DIRECTIVE_DEFINITION) {
      var _def$arguments;

      // FIXME: https://github.com/graphql/graphql-js/issues/2203

      /* c8 ignore next */
      const argNodes =
        (_def$arguments = def.arguments) !== null && _def$arguments !== void 0
          ? _def$arguments
          : [];
      requiredArgsMap[def.name.value] = keyMap(
        argNodes.filter(isRequiredArgumentNode),
        (arg) => arg.name.value,
      );
    }
  }

  return {
    Directive: {
      // Validate on leave to allow for deeper errors to appear first.
      leave(directiveNode) {
        const directiveName = directiveNode.name.value;
        const requiredArgs = requiredArgsMap[directiveName];

        if (requiredArgs) {
          var _directiveNode$argume;

          // FIXME: https://github.com/graphql/graphql-js/issues/2203

          /* c8 ignore next */
          const argNodes =
            (_directiveNode$argume = directiveNode.arguments) !== null &&
            _directiveNode$argume !== void 0
              ? _directiveNode$argume
              : [];
          const argNodeMap = new Set(argNodes.map((arg) => arg.name.value));

          for (const [argName, argDef] of Object.entries(requiredArgs)) {
            if (!argNodeMap.has(argName)) {
              const argType = isType(argDef.type)
                ? inspect(argDef.type)
                : print(argDef.type);
              context.reportError(
                new GraphQLError(
                  `Directive "@${directiveName}" argument "${argName}" of type "${argType}" is required, but it was not provided.`,
                  {
                    nodes: directiveNode,
                  },
                ),
              );
            }
          }
        }
      },
    },
  };
}

function isRequiredArgumentNode(arg) {
  return arg.type.kind === Kind.NON_NULL_TYPE && arg.defaultValue == null;
}