1 | import { Operation } from "apollo-codegen-core/lib/compiler";
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2 | import {
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3 | GraphQLType,
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4 | GraphQLInputType,
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5 | GraphQLInputObjectType,
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6 | GraphQLInputField,
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7 | isInputObjectType,
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8 | isNonNullType,
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9 | isListType,
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10 | isInputType
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11 | } from "graphql";
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12 |
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13 | import {
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14 | identifier,
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15 | TSType,
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16 | TSTypeAnnotation,
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17 | LVal,
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18 | arrowFunctionExpression,
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19 | variableDeclaration,
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20 | variableDeclarator,
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21 | parenthesizedExpression,
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22 | objectExpression,
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23 | Identifier,
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24 | objectProperty,
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25 | ArrowFunctionExpression,
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26 | ObjectProperty,
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27 | Expression,
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28 | isIdentifier
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29 | } from "@babel/types";
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30 |
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31 | import { typeForInputType, typeReference, stringIdentifier } from "./types";
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32 | import { InputType } from "./intermediates";
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33 | import { OperationType } from "./genericTypes";
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34 | import compact from "./compact";
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35 | import generate from "@babel/generator";
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36 | import { callExpression } from "@babel/types";
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37 | import { logicalExpression } from "@babel/types";
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38 | import { isLogicalExpression } from "@babel/types";
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39 | import { memberExpression } from "@babel/types";
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40 |
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41 | const objectPropertyForGraphQLInputField = (field: GraphQLInputField) =>
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42 | objectProperty(identifier(field.name), identifier(field.name), false, true);
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43 |
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44 | const exactValueForGraphQLInputType = (
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45 | type: GraphQLInputType,
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46 | fieldIdentifier: Identifier
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47 | ): Expression => {
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48 | if (isInputObjectType(type)) {
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49 | return logicalExpression(
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50 | "&&",
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51 | fieldIdentifier,
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52 | callExpression(identifier(type.name), [fieldIdentifier])
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53 | );
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54 | } else if (isNonNullType(type)) {
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55 | const expression = exactValueForGraphQLInputType(
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56 | type.ofType,
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57 | fieldIdentifier
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58 | );
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59 | return isLogicalExpression(expression) ? expression.right : expression;
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60 | } else if (isListType(type)) {
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61 | const expression = exactValueForGraphQLInputType(
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62 | type.ofType,
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63 | fieldIdentifier
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64 | );
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65 | return isIdentifier(expression) && expression.name == fieldIdentifier.name
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66 | ? expression
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67 | : logicalExpression(
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68 | "&&",
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69 | fieldIdentifier,
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70 | memberExpression(
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71 | fieldIdentifier,
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72 | callExpression(identifier("map"), [
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73 | arrowFunctionExpression(
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74 | [identifier("x")],
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75 | exactValueForGraphQLInputType(type.ofType, identifier("x"))
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76 | )
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77 | ])
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78 | )
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79 | );
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80 | } else {
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81 | return fieldIdentifier;
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82 | }
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83 | };
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84 |
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85 | const exactPropertyForGraphQLInputField = (field: GraphQLInputField) =>
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86 | objectProperty(
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87 | identifier(field.name),
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88 | exactValueForGraphQLInputType(field.type, identifier(field.name)),
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89 | false,
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90 | true
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91 | );
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92 |
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93 | export const typedIdentifier = (name: string, type: TSType): Identifier => ({
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94 | ...identifier(name),
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95 | typeAnnotation: TSTypeAnnotation(type) as any
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96 | });
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97 |
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98 | const identifierForVariable = (variable: {
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99 | name: string;
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100 | type: GraphQLType;
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101 | }): Identifier =>
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102 | typedIdentifier(
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103 | variable.name,
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104 | typeForInputType(InputType(variable.type as GraphQLInputType))
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105 | );
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106 |
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107 | const objectPropertiesForOperation = (operation: Operation): ObjectProperty[] =>
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108 | compact(
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109 | objectProperty(
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110 | identifier("query"),
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111 | stringIdentifier(operation.operationName)
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112 | ),
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113 | operation.variables.length > 0 &&
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114 | objectProperty(
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115 | identifier("variables"),
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116 | objectExpression(
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117 | operation.variables.map(variable =>
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118 | objectProperty(
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119 | identifier(variable.name),
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120 | isInputType(variable.type)
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121 | ? exactValueForGraphQLInputType(
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122 | variable.type,
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123 | identifier(variable.name)
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124 | )
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125 | : identifier(variable.name),
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126 | false,
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127 | true
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128 | )
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129 | )
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130 | )
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131 | )
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132 | );
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133 |
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134 | export const constructorDeclaration = (
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135 | name: string,
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136 | parameters: LVal[],
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137 | returnType: TSType,
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138 | properties: ObjectProperty[]
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139 | ) =>
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140 | variableDeclaration("const", [
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141 | variableDeclarator(identifier(name), {
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142 | ...arrowFunctionExpression(
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143 | parameters,
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144 | parenthesizedExpression(objectExpression(properties))
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145 | ),
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146 | returnType: TSTypeAnnotation(returnType) as any
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147 | } as ArrowFunctionExpression)
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148 | ]);
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149 |
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150 | export const constructorDeclarationForGraphQLInputObjectType = (
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151 | type: GraphQLInputObjectType
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152 | ) =>
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153 | ((fields: GraphQLInputField[]) =>
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154 | constructorDeclaration(
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155 | type.name,
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156 | [
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157 | {
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158 | ...identifier(
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159 | generate(
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160 | objectExpression(fields.map(objectPropertyForGraphQLInputField))
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161 | ).code
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162 | ),
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163 | typeAnnotation: TSTypeAnnotation(typeReference(type.name)) as any
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164 | }
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165 | ],
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166 | typeReference(type.name),
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167 | fields.map(exactPropertyForGraphQLInputField)
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168 | ))(Object.values(type.getFields()));
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169 |
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170 | export const constructorDeclarationForOperation = (operation: Operation) =>
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171 | constructorDeclaration(
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172 | operation.operationName,
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173 | operation.variables.map(identifierForVariable),
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174 | OperationType(typeReference(operation.operationName)),
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175 | objectPropertiesForOperation(operation)
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176 | );
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