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Carmine DiMascio
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| import { OpenApiRequest, OpenApiRequestMetadata } from '../../framework/types'; | ||
| import { ParametersParse } from './parameters.parse'; | ||
|
|
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| /** | ||
| * A class top arse incoing parameters and populate a list of request fields e.g. id and field types e.g. query | ||
| * whose value must later be parsed as a JSON object, JSON Exploded Object, JSON Array, or JSON Exploded Array | ||
| */ | ||
| export class ParametersTransform { | ||
| private parameters: ParametersParse; | ||
| private schema; | ||
|
|
||
| constructor(parseResult: ParametersParse, schema) { | ||
| this.parameters = parseResult; | ||
| this.schema = schema; | ||
| } | ||
|
|
||
| applyExplodedJsonTransform(req: OpenApiRequest) { | ||
| // forcing convert to object if scheme describes param as object + explode | ||
| // for easy validation, keep the schema but update whereabouts of its sub components | ||
| this.parameters.parseObjectExplode.forEach(item => { | ||
| if (req[item.reqField]) { | ||
| // check if there is at least one of the nested properties before create the parent | ||
| const atLeastOne = item.properties.some(p => | ||
| req[item.reqField].hasOwnProperty(p), | ||
| ); | ||
| if (atLeastOne) { | ||
| req[item.reqField][item.name] = {}; | ||
| item.properties.forEach(property => { | ||
| if (req[item.reqField][property]) { | ||
| const type = this.schema.properties[item.reqField].properties[ | ||
| item.name | ||
| ].properties?.[property]?.type; | ||
| const value = req[item.reqField][property]; | ||
| const coercedValue = | ||
| type === 'array' && !Array.isArray(value) ? [value] : value; | ||
| req[item.reqField][item.name][property] = coercedValue; | ||
| delete req[item.reqField][property]; | ||
| } | ||
| }); | ||
| } | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| applyJsonTransform(req: OpenApiRequest) { | ||
| /** | ||
| * support json in request params, query, headers and cookies | ||
| * like this filter={"type":"t-shirt","color":"blue"} | ||
| * | ||
| * https://swagger.io/docs/specification/describing-parameters/#schema-vs-content | ||
| */ | ||
| this.parameters.parseJson.forEach(item => { | ||
| if (req[item.reqField]?.[item.name]) { | ||
| try { | ||
| req[item.reqField][item.name] = JSON.parse( | ||
| req[item.reqField][item.name], | ||
| ); | ||
| } catch (e) { | ||
| // NOOP If parsing failed but _should_ contain JSON, validator will catch it. | ||
| // May contain falsely flagged parameter (e.g. input was object OR string) | ||
| } | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| applyJsonArrayTransform(req: OpenApiRequest) { | ||
| /** | ||
| * array deserialization | ||
| * filter=foo,bar,baz | ||
| * filter=foo|bar|baz | ||
| * filter=foo%20bar%20baz | ||
| */ | ||
| this.parameters.parseArray.forEach(item => { | ||
| if (req[item.reqField]?.[item.name]) { | ||
| req[item.reqField][item.name] = req[item.reqField][item.name].split( | ||
| item.delimiter, | ||
| ); | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| applyExplodedJsonArrayTransform(req: OpenApiRequest) { | ||
| /** | ||
| * forcing convert to array if scheme describes param as array + explode | ||
| */ | ||
| this.parameters.parseArrayExplode.forEach(item => { | ||
| if ( | ||
| req[item.reqField]?.[item.name] && | ||
| !(req[item.reqField][item.name] instanceof Array) | ||
| ) { | ||
| req[item.reqField][item.name] = [req[item.reqField][item.name]]; | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| applyPathTransform(req: OpenApiRequest) { | ||
| const openapi = <OpenApiRequestMetadata>req.openapi; | ||
| const shouldUpdatePathParams = Object.keys(openapi.pathParams).length > 0; | ||
|
|
||
| if (shouldUpdatePathParams) { | ||
| req.params = openapi.pathParams ?? req.params; | ||
| } | ||
| } | ||
| } |
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