redoc/lib/services/schema-helper.service.ts

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'use strict';
import { JsonPointer } from '../utils/JsonPointer';
import { SpecManager } from '../utils/SpecManager';
import {methods as swaggerMethods} from '../utils/swagger-defs';
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interface PropertyPreprocessOptions {
childFor: string;
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skipReadOnly?: boolean;
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}
const injectors = {
general: {
check: () => true,
inject: (injectTo, propertySchema, pointer) => {
injectTo._pointer = propertySchema._pointer || pointer;
injectTo._displayType = propertySchema.type;
if (propertySchema.format) injectTo._displayFormat = `<${propertySchema.format}>`;
if (propertySchema.enum) {
injectTo.enum = propertySchema.enum.map((value) => {
return {val: value, type: typeof value};
});
}
}
},
discriminator: {
check: (propertySchema) => propertySchema.discriminator,
inject: (injectTo, propertySchema = injectTo, pointer) => {
injectTo._descendants = SpecManager.instance().findDerivedDefinitions(pointer);
injectTo.discriminator = propertySchema.discriminator;
}
},
array: {
check: (propertySchema) => {
return propertySchema.type === 'array';
},
inject: (injectTo, propertySchema = injectTo, propPointer) => {
injectTo._isArray = true;
injectTo._pointer = propertySchema.items._pointer
|| JsonPointer.join(propertySchema._pointer || propPointer, ['items']);
SchemaHelper.runInjectors(injectTo, propertySchema.items, propPointer);
}
},
object: {
check: (propertySchema) => {
return propertySchema.type === 'object' && propertySchema.properties;
},
inject: (injectTo, propertySchema = injectTo) => {
let baseName = propertySchema._pointer && JsonPointer.baseName(propertySchema._pointer);
injectTo._displayType = propertySchema.title || baseName || 'object';
}
},
noType: {
check: (propertySchema) => !propertySchema.type,
inject: (injectTo) => {
injectTo._displayType = '< * >';
injectTo._displayTypeHint = 'This field may contain data of any type';
injectTo.isTrivial = true;
}
},
simpleType: {
check: (propertySchema) => {
if (propertySchema.type === 'object') {
return (!propertySchema.properties || !Object.keys(propertySchema.properties).length)
&& (typeof propertySchema.additionalProperties !== 'object');
}
return (propertySchema.type !== 'array') && propertySchema.type;
},
inject: (injectTo, propertySchema = injectTo) => {
injectTo.isTrivial = true;
if (injectTo._pointer) {
injectTo._pointer = undefined;
injectTo._displayType = propertySchema.title ?
`${propertySchema.title} (${propertySchema.type})` : propertySchema.type;
}
}
},
integer: {
check: (propertySchema) => (propertySchema.type === 'integer' || propertySchema.type === 'number'),
inject: (injectTo, propertySchema = injectTo) => {
var range = '';
if (propertySchema.minimum && propertySchema.maximum) {
range += propertySchema.exclusiveMinimum ? '( ' : '[ ';
range += propertySchema.minimum;
range += ' .. ';
range += propertySchema.maximum;
range += propertySchema.exclusiveMaximum ? ' )' : ' ]';
} else if (propertySchema.maximum) {
range += propertySchema.exclusiveMaximum? '< ' : '<= ';
range += propertySchema.maximum;
} else if (propertySchema.minimum) {
range += propertySchema.exclusiveMinimum ? '> ' : '>= ';
range += propertySchema.minimum;
}
if (range) {
injectTo._range = range;
}
}
},
string: {
check: propertySchema => (propertySchema.type === 'string'),
inject: (injectTo, propertySchema = injectTo) => {
var range;
if (propertySchema.minLength && propertySchema.maxLength) {
range = `[ ${propertySchema.minLength} .. ${propertySchema.maxLength} ]`;
} else if (propertySchema.maxLength) {
range = '<= ' + propertySchema.maxLength;
} else if (propertySchema.minimum) {
range = '>= ' + propertySchema.minLength;
}
if (range) {
injectTo._range = range + ' characters';
}
}
},
file: {
check: propertySchema => (propertySchema.type === 'file'),
inject: (injectTo, propertySchema = injectTo, propPointer, hostPointer) => {
injectTo.isFile = true;
let parentPtr;
if (propertySchema.in === 'formData') {
parentPtr = JsonPointer.dirName(hostPointer, 1);
} else {
parentPtr = JsonPointer.dirName(hostPointer, 3);
}
let parentParam = SpecManager.instance().byPointer(parentPtr);
let root = SpecManager.instance().schema;
injectTo._produces = parentParam && parentParam.produces || root.produces;
injectTo._consumes = parentParam && parentParam.consumes || root.consumes;
}
}
};
export class SchemaHelper {
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static preprocess(schema, pointer, hostPointer?) {
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//propertySchema = Object.assign({}, propertySchema);
if (schema['x-redoc-schema-precompiled']) {
return schema;
}
SchemaHelper.runInjectors(schema, schema, pointer, hostPointer);
schema['x-redoc-schema-precompiled'] = true;
return schema;
}
static runInjectors(injectTo, schema, pointer, hostPointer?) {
for (var injName of Object.keys(injectors)) {
let injector = injectors[injName];
if (injector.check(schema)) {
injector.inject(injectTo, schema, pointer, hostPointer);
}
}
}
static preprocessProperties(schema:any, pointer:string, opts: PropertyPreprocessOptions) {
let requiredMap = {};
if (schema.required) {
schema.required.forEach(prop => requiredMap[prop] = true);
}
let discriminatorFieldIdx = -1;
let props = schema.properties && Object.keys(schema.properties).map((propName, idx) => {
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let propertySchema = Object.assign({}, schema.properties[propName]);
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let propPointer = propertySchema._pointer ||
JsonPointer.join(pointer, ['properties', propName]);
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propertySchema = SchemaHelper.preprocess(propertySchema, propPointer);
propertySchema._name = propName;
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// stop endless discriminator recursion
if (propertySchema._pointer === opts.childFor) {
propertySchema._pointer = null;
}
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propertySchema._required = !!requiredMap[propName];
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propertySchema.isDiscriminator = (schema.discriminator === propName);
if (propertySchema.isDiscriminator) {
discriminatorFieldIdx = idx;
}
return propertySchema;
});
props = props || [];
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if (schema.additionalProperties && (typeof schema.additionalProperties === 'object')) {
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let propsSchema = SchemaHelper.preprocessAdditionalProperties(schema, pointer);
propsSchema._additional = true;
props.push(propsSchema);
}
// Move discriminator field to the end of properties list
if (discriminatorFieldIdx > -1) {
let discrProp = props.splice(discriminatorFieldIdx, 1);
props.push(discrProp[0]);
}
// filter readOnly props for request schemas
if (opts.skipReadOnly) {
props = props.filter(prop => !prop.readOnly);
}
schema._properties = props;
}
static preprocessAdditionalProperties(schema:any, pointer:string) {
var addProps = schema.additionalProperties;
let ptr = addProps._pointer || JsonPointer.join(pointer, ['additionalProperties']);
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let res = SchemaHelper.preprocess(addProps, ptr);
res._name = '<Additional Properties> *';
return res;
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}
static unwrapArray(schema, pointer) {
var res = schema;
if (schema && schema.type === 'array') {
let ptr = schema.items._pointer || JsonPointer.join(pointer, ['items']);
res = schema.items;
res._isArray = true;
res._pointer = ptr;
res = SchemaHelper.unwrapArray(res, ptr);
}
return res;
}
static methodSummary(method) {
return method.summary || method.operationId ||
(method.description && method.description.substring(0, 50)) || '<no description>';
}
static buildMenuTree(schema) {
let tag2MethodMapping = {};
let definedTags = schema.tags || [];
// add tags into map to preserve order
for (let tag of definedTags) {
tag2MethodMapping[tag.name] = {
'description': tag.description,
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'name': tag.name,
'x-traitTag': tag['x-traitTag'],
'methods': []
};
}
let paths = schema.paths;
for (let path of Object.keys(paths)) {
let methods = Object.keys(paths[path]).filter((k) => swaggerMethods.has(k));
for (let method of methods) {
let methodInfo = paths[path][method];
let tags = methodInfo.tags;
if (!tags || !tags.length) {
tags = [''];
}
let methodPointer = JsonPointer.compile(['paths', path, method]);
let methodSummary = SchemaHelper.methodSummary(methodInfo);
for (let tag of tags) {
let tagDetails = tag2MethodMapping[tag];
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if (!tag2MethodMapping[tag]) {
tagDetails = {
name: tag,
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empty: tag === ''
};
tag2MethodMapping[tag] = tagDetails;
}
if (tagDetails['x-traitTag']) continue;
if (!tagDetails.methods) tagDetails.methods = [];
tagDetails.methods.push({
pointer: methodPointer,
summary: methodSummary,
operationId: methodInfo.operationId,
tag: tag
});
}
}
}
return Object.keys(tag2MethodMapping).map(tag => tag2MethodMapping[tag]);
}
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}