text: import { join, wrap } from '../utilities/printing';
  
  import { propertyDeclarations } from './codeGeneration';
  import { typeNameFromGraphQLType } from './types';
  
  import { pascalCase } from 'change-case';
  
  export function typeDeclaration(generator, { interfaceName, noBrackets }, closure) {
    generator.printNewlineIfNeeded();
    generator.printNewline();
    generator.print(`export type ${interfaceName} = `);
    generator.pushScope({ typeName: interfaceName });
    if (noBrackets) {
      generator.withinBlock(closure, '', '');
    } else {
      generator.withinBlock(closure, '{|', '|}');
    }
    generator.popScope();
    generator.print(';');
  }
  
  export function propertyDeclaration(
    generator,
    { fieldName, type, propertyName, typeName, description, isArray, isNullable, isArrayElementNullable, fragmentSpreads, isOptional },
    closure,
    open = ' {|',
    close = '|}',
  ) {
    const name = fieldName || propertyName;
  
    if (description) {
      description.split('\n').forEach(line => {
        generator.printOnNewline(`// ${line.trim()}`);
      });
    }
  
    if (closure) {
      generator.printOnNewline(name);
      if (isOptional && isNullable) {
        generator.print('?');
      }
      generator.print(':');
      if (isNullable) {
        generator.print(' ?');
      }
      if (isArray) {
        if (!isNullable) {
          generator.print(' ');
        }
        generator.print(' Array<');
        if (isArrayElementNullable) {
          generator.print('?');
        }
      }
  
      generator.pushScope({ typeName: name });
  
      generator.withinBlock(closure, open, close);
  
      generator.popScope();
  
      if (isArray) {
        generator.print(' >');
      }
    } else {
      generator.printOnNewline(name);
      if (isOptional && isNullable) {
        generator.print('?');
      }
      generator.print(`: ${typeName || typeNameFromGraphQLType(generator.context, type)}`);
    }
    generator.print(',');
  }
  
  export function propertySetsDeclaration(generator, property, propertySets, standalone = false) {
    const { description, fieldName, propertyName, typeName, isNullable, isArray, isArrayElementNullable } = property;
    const name = fieldName || propertyName;
  
    if (description) {
      description.split('\n').forEach(line => {
        generator.printOnNewline(`// ${line.trim()}`);
      });
    }
    if (!standalone) {
      generator.printOnNewline(`${name}:`);
    }
  
    if (isNullable) {
      generator.print(' ?');
    }
  
    if (isArray) {
      generator.print('Array< ');
      if (isArrayElementNullable) {
        generator.print('?');
      }
    }
  
    generator.pushScope({ typeName: name });
  
    generator.withinBlock(
      () => {
        propertySets.forEach((propertySet, index, propertySets) => {
          generator.withinBlock(() => {
            propertyDeclarations(generator, propertySet);
          });
          if (index !== propertySets.length - 1) {
            generator.print(' |');
          }
        });
      },
      '(',
      ')',
    );
  
    generator.popScope();
  
    if (isArray) {
      generator.print(' >');
    }
  
    if (!standalone) {
      generator.print(',');
    }
  }
  