/** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ import { HttpContext } from './context'; import { HttpHeaders } from './headers'; import { HttpParams } from './params'; /** * Determine whether the given HTTP method may include a body. */ function mightHaveBody(method) { switch (method) { case 'DELETE': case 'GET': case 'HEAD': case 'OPTIONS': case 'JSONP': return false; default: return true; } } /** * Safely assert whether the given value is an ArrayBuffer. * * In some execution environments ArrayBuffer is not defined. */ function isArrayBuffer(value) { return typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer; } /** * Safely assert whether the given value is a Blob. * * In some execution environments Blob is not defined. */ function isBlob(value) { return typeof Blob !== 'undefined' && value instanceof Blob; } /** * Safely assert whether the given value is a FormData instance. * * In some execution environments FormData is not defined. */ function isFormData(value) { return typeof FormData !== 'undefined' && value instanceof FormData; } /** * Safely assert whether the given value is a URLSearchParams instance. * * In some execution environments URLSearchParams is not defined. */ function isUrlSearchParams(value) { return typeof URLSearchParams !== 'undefined' && value instanceof URLSearchParams; } /** * An outgoing HTTP request with an optional typed body. * * `HttpRequest` represents an outgoing request, including URL, method, * headers, body, and other request configuration options. Instances should be * assumed to be immutable. To modify a `HttpRequest`, the `clone` * method should be used. * * @publicApi */ export class HttpRequest { constructor(method, url, third, fourth) { this.url = url; /** * The request body, or `null` if one isn't set. * * Bodies are not enforced to be immutable, as they can include a reference to any * user-defined data type. However, interceptors should take care to preserve * idempotence by treating them as such. */ this.body = null; /** * Whether this request should be made in a way that exposes progress events. * * Progress events are expensive (change detection runs on each event) and so * they should only be requested if the consumer intends to monitor them. */ this.reportProgress = false; /** * Whether this request should be sent with outgoing credentials (cookies). */ this.withCredentials = false; /** * The expected response type of the server. * * This is used to parse the response appropriately before returning it to * the requestee. */ this.responseType = 'json'; this.method = method.toUpperCase(); // Next, need to figure out which argument holds the HttpRequestInit // options, if any. let options; // Check whether a body argument is expected. The only valid way to omit // the body argument is to use a known no-body method like GET. if (mightHaveBody(this.method) || !!fourth) { // Body is the third argument, options are the fourth. this.body = (third !== undefined) ? third : null; options = fourth; } else { // No body required, options are the third argument. The body stays null. options = third; } // If options have been passed, interpret them. if (options) { // Normalize reportProgress and withCredentials. this.reportProgress = !!options.reportProgress; this.withCredentials = !!options.withCredentials; // Override default response type of 'json' if one is provided. if (!!options.responseType) { this.responseType = options.responseType; } // Override headers if they're provided. if (!!options.headers) { this.headers = options.headers; } if (!!options.context) { this.context = options.context; } if (!!options.params) { this.params = options.params; } } // If no headers have been passed in, construct a new HttpHeaders instance. if (!this.headers) { this.headers = new HttpHeaders(); } // If no context have been passed in, construct a new HttpContext instance. if (!this.context) { this.context = new HttpContext(); } // If no parameters have been passed in, construct a new HttpUrlEncodedParams instance. if (!this.params) { this.params = new HttpParams(); this.urlWithParams = url; } else { // Encode the parameters to a string in preparation for inclusion in the URL. const params = this.params.toString(); if (params.length === 0) { // No parameters, the visible URL is just the URL given at creation time. this.urlWithParams = url; } else { // Does the URL already have query parameters? Look for '?'. const qIdx = url.indexOf('?'); // There are 3 cases to handle: // 1) No existing parameters -> append '?' followed by params. // 2) '?' exists and is followed by existing query string -> // append '&' followed by params. // 3) '?' exists at the end of the url -> append params directly. // This basically amounts to determining the character, if any, with // which to join the URL and parameters. const sep = qIdx === -1 ? '?' : (qIdx < url.length - 1 ? '&' : ''); this.urlWithParams = url + sep + params; } } } /** * Transform the free-form body into a serialized format suitable for * transmission to the server. */ serializeBody() { // If no body is present, no need to serialize it. if (this.body === null) { return null; } // Check whether the body is already in a serialized form. If so, // it can just be returned directly. if (isArrayBuffer(this.body) || isBlob(this.body) || isFormData(this.body) || isUrlSearchParams(this.body) || typeof this.body === 'string') { return this.body; } // Check whether the body is an instance of HttpUrlEncodedParams. if (this.body instanceof HttpParams) { return this.body.toString(); } // Check whether the body is an object or array, and serialize with JSON if so. if (typeof this.body === 'object' || typeof this.body === 'boolean' || Array.isArray(this.body)) { return JSON.stringify(this.body); } // Fall back on toString() for everything else. return this.body.toString(); } /** * Examine the body and attempt to infer an appropriate MIME type * for it. * * If no such type can be inferred, this method will return `null`. */ detectContentTypeHeader() { // An empty body has no content type. if (this.body === null) { return null; } // FormData bodies rely on the browser's content type assignment. if (isFormData(this.body)) { return null; } // Blobs usually have their own content type. If it doesn't, then // no type can be inferred. if (isBlob(this.body)) { return this.body.type || null; } // Array buffers have unknown contents and thus no type can be inferred. if (isArrayBuffer(this.body)) { return null; } // Technically, strings could be a form of JSON data, but it's safe enough // to assume they're plain strings. if (typeof this.body === 'string') { return 'text/plain'; } // `HttpUrlEncodedParams` has its own content-type. if (this.body instanceof HttpParams) { return 'application/x-www-form-urlencoded;charset=UTF-8'; } // Arrays, objects, boolean and numbers will be encoded as JSON. if (typeof this.body === 'object' || typeof this.body === 'number' || typeof this.body === 'boolean') { return 'application/json'; } // No type could be inferred. return null; } clone(update = {}) { var _a; // For method, url, and responseType, take the current value unless // it is overridden in the update hash. const method = update.method || this.method; const url = update.url || this.url; const responseType = update.responseType || this.responseType; // The body is somewhat special - a `null` value in update.body means // whatever current body is present is being overridden with an empty // body, whereas an `undefined` value in update.body implies no // override. const body = (update.body !== undefined) ? update.body : this.body; // Carefully handle the boolean options to differentiate between // `false` and `undefined` in the update args. const withCredentials = (update.withCredentials !== undefined) ? update.withCredentials : this.withCredentials; const reportProgress = (update.reportProgress !== undefined) ? update.reportProgress : this.reportProgress; // Headers and params may be appended to if `setHeaders` or // `setParams` are used. let headers = update.headers || this.headers; let params = update.params || this.params; // Pass on context if needed const context = (_a = update.context) !== null && _a !== void 0 ? _a : this.context; // Check whether the caller has asked to add headers. if (update.setHeaders !== undefined) { // Set every requested header. headers = Object.keys(update.setHeaders) .reduce((headers, name) => headers.set(name, update.setHeaders[name]), headers); } // Check whether the caller has asked to set params. if (update.setParams) { // Set every requested param. params = Object.keys(update.setParams) .reduce((params, param) => params.set(param, update.setParams[param]), params); } // Finally, construct the new HttpRequest using the pieces from above. return new HttpRequest(method, url, body, { params, headers, context, reportProgress, responseType, withCredentials, }); } } //# 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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {HttpContext} from './context';\nimport {HttpHeaders} from './headers';\nimport {HttpParams} from './params';\n\n\n/**\n * Construction interface for `HttpRequest`s.\n *\n * All values are optional and will override default values if provided.\n */\ninterface HttpRequestInit {\n  headers?: HttpHeaders;\n  context?: HttpContext;\n  reportProgress?: boolean;\n  params?: HttpParams;\n  responseType?: 'arraybuffer'|'blob'|'json'|'text';\n  withCredentials?: boolean;\n}\n\n/**\n * Determine whether the given HTTP method may include a body.\n */\nfunction mightHaveBody(method: string): boolean {\n  switch (method) {\n    case 'DELETE':\n    case 'GET':\n    case 'HEAD':\n    case 'OPTIONS':\n    case 'JSONP':\n      return false;\n    default:\n      return true;\n  }\n}\n\n/**\n * 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Instances should be\n * assumed to be immutable. To modify a `HttpRequest`, the `clone`\n * method should be used.\n *\n * @publicApi\n */\nexport class HttpRequest<T> {\n  /**\n   * The request body, or `null` if one isn't set.\n   *\n   * Bodies are not enforced to be immutable, as they can include a reference to any\n   * user-defined data type. However, interceptors should take care to preserve\n   * idempotence by treating them as such.\n   */\n  readonly body: T|null = null;\n\n  /**\n   * Outgoing headers for this request.\n   */\n  // TODO(issue/24571): remove '!'.\n  readonly headers!: HttpHeaders;\n\n  /**\n   * Shared and mutable context that can be used by interceptors\n   */\n  readonly context!: HttpContext;\n\n  /**\n   * Whether this request should be made in a way that exposes progress events.\n   *\n   * Progress events are expensive (change detection runs on each event) and so\n   * they should only be requested if the consumer intends to monitor them.\n   */\n  readonly reportProgress: boolean = false;\n\n  /**\n   * Whether this request should be sent with outgoing credentials (cookies).\n   */\n  readonly withCredentials: boolean = false;\n\n  /**\n   * The expected response type of the server.\n   *\n   * This is used to parse the response appropriately before returning it to\n   * the requestee.\n   */\n  readonly responseType: 'arraybuffer'|'blob'|'json'|'text' = 'json';\n\n  /**\n   * The outgoing HTTP request method.\n   */\n  readonly method: string;\n\n  /**\n   * Outgoing URL parameters.\n   *\n   * To pass a string representation of HTTP parameters in the URL-query-string format,\n   * the `HttpParamsOptions`' `fromString` may be used. For example:\n   *\n   * ```\n   * new HttpParams({fromString: 'angular=awesome'})\n   * ```\n   */\n  // TODO(issue/24571): remove '!'.\n  readonly params!: HttpParams;\n\n  /**\n   * The outgoing URL with all URL parameters set.\n   */\n  readonly urlWithParams: string;\n\n  constructor(method: 'DELETE'|'GET'|'HEAD'|'JSONP'|'OPTIONS', url: string, init?: {\n    headers?: HttpHeaders,\n    context?: HttpContext,\n    reportProgress?: boolean,\n    params?: HttpParams,\n    responseType?: 'arraybuffer'|'blob'|'json'|'text',\n    withCredentials?: boolean,\n  });\n  constructor(method: 'POST'|'PUT'|'PATCH', url: string, body: T|null, init?: {\n    headers?: HttpHeaders,\n    context?: HttpContext,\n    reportProgress?: boolean,\n    params?: HttpParams,\n    responseType?: 'arraybuffer'|'blob'|'json'|'text',\n    withCredentials?: boolean,\n  });\n  constructor(method: string, url: string, body: T|null, init?: {\n    headers?: HttpHeaders,\n    context?: HttpContext,\n    reportProgress?: boolean,\n    params?: HttpParams,\n    responseType?: 'arraybuffer'|'blob'|'json'|'text',\n    withCredentials?: boolean,\n  });\n  constructor(\n      method: string, readonly url: string, third?: T|{\n        headers?: HttpHeaders,\n        context?: HttpContext,\n        reportProgress?: boolean,\n        params?: HttpParams,\n        responseType?: 'arraybuffer'|'blob'|'json'|'text',\n        withCredentials?: boolean,\n      }|null,\n      fourth?: {\n        headers?: HttpHeaders,\n        context?: HttpContext,\n        reportProgress?: boolean,\n        params?: HttpParams,\n        responseType?: 'arraybuffer'|'blob'|'json'|'text',\n        withCredentials?: boolean,\n      }) {\n    this.method = method.toUpperCase();\n    // Next, need to figure out which argument holds the HttpRequestInit\n    // options, if any.\n    let options: HttpRequestInit|undefined;\n\n    // Check whether a body argument is expected. The only valid way to omit\n    // the body argument is to use a known no-body method like GET.\n    if (mightHaveBody(this.method) || !!fourth) {\n      // Body is the third argument, options are the fourth.\n      this.body = (third !== undefined) ? third as T : null;\n      options = fourth;\n    } else {\n      // No body required, options are the third argument. The body stays null.\n      options = third as HttpRequestInit;\n    }\n\n    // If options have been passed, interpret them.\n    if (options) {\n      // Normalize reportProgress and withCredentials.\n      this.reportProgress = !!options.reportProgress;\n      this.withCredentials = !!options.withCredentials;\n\n      // Override default response type of 'json' if one is provided.\n      if (!!options.responseType) {\n        this.responseType = options.responseType;\n      }\n\n      // Override headers if they're provided.\n      if (!!options.headers) {\n        this.headers = options.headers;\n      }\n\n      if (!!options.context) {\n        this.context = options.context;\n      }\n\n      if (!!options.params) {\n        this.params = options.params;\n      }\n    }\n\n    // If no headers have been passed in, construct a new HttpHeaders instance.\n    if (!this.headers) {\n      this.headers = new HttpHeaders();\n    }\n\n    // If no context have been passed in, construct a new HttpContext instance.\n    if (!this.context) {\n      this.context = new HttpContext();\n    }\n\n    // If no parameters have been passed in, construct a new HttpUrlEncodedParams instance.\n    if (!this.params) {\n      this.params = new HttpParams();\n      this.urlWithParams = url;\n    } else {\n      // Encode the parameters to a string in preparation for inclusion in the URL.\n      const params = this.params.toString();\n      if (params.length === 0) {\n        // No parameters, the visible URL is just the URL given at creation time.\n        this.urlWithParams = url;\n      } else {\n        // Does the URL already have query parameters? Look for '?'.\n        const qIdx = url.indexOf('?');\n        // There are 3 cases to handle:\n        // 1) No existing parameters -> append '?' followed by params.\n        // 2) '?' exists and is followed by existing query string ->\n        //    append '&' followed by params.\n        // 3) '?' exists at the end of the url -> append params directly.\n        // This basically amounts to determining the character, if any, with\n        // which to join the URL and parameters.\n        const sep: string = qIdx === -1 ? '?' : (qIdx < url.length - 1 ? '&' : '');\n        this.urlWithParams = url + sep + params;\n      }\n    }\n  }\n\n  /**\n   * Transform the free-form body into a serialized format suitable for\n   * transmission to the server.\n   */\n  serializeBody(): ArrayBuffer|Blob|FormData|string|null {\n    // If no body is present, no need to serialize it.\n    if (this.body === null) {\n      return null;\n    }\n    // Check whether the body is already in a serialized form. If so,\n    // it can just be returned directly.\n    if (isArrayBuffer(this.body) || isBlob(this.body) || isFormData(this.body) ||\n        isUrlSearchParams(this.body) || typeof this.body === 'string') {\n      return this.body;\n    }\n    // Check whether the body is an instance of HttpUrlEncodedParams.\n    if (this.body instanceof HttpParams) {\n      return this.body.toString();\n    }\n    // Check whether the body is an object or array, and serialize with JSON if so.\n    if (typeof this.body === 'object' || typeof this.body === 'boolean' ||\n        Array.isArray(this.body)) {\n      return JSON.stringify(this.body);\n    }\n    // Fall back on toString() for everything else.\n    return (this.body as any).toString();\n  }\n\n  /**\n   * Examine the body and attempt to infer an appropriate MIME type\n   * for it.\n   *\n   * If no such type can be inferred, this method will return `null`.\n   */\n  detectContentTypeHeader(): string|null {\n    // An empty body has no content type.\n    if (this.body === null) {\n      return null;\n    }\n    // FormData bodies rely on the browser's content type assignment.\n    if (isFormData(this.body)) {\n      return null;\n    }\n    // Blobs usually have their own content type. If it doesn't, then\n    // no type can be inferred.\n    if (isBlob(this.body)) {\n      return this.body.type || null;\n    }\n    // Array buffers have unknown contents and thus no type can be inferred.\n    if (isArrayBuffer(this.body)) {\n      return null;\n    }\n    // Technically, strings could be a form of JSON data, but it's safe enough\n    // to assume they're plain strings.\n    if (typeof this.body === 'string') {\n      return 'text/plain';\n    }\n    // `HttpUrlEncodedParams` has its own content-type.\n    if (this.body instanceof HttpParams) {\n      return 'application/x-www-form-urlencoded;charset=UTF-8';\n    }\n    // Arrays, objects, boolean and numbers will be encoded as JSON.\n    if (typeof this.body === 'object' || typeof this.body === 'number' ||\n        typeof this.body === 'boolean') {\n      return 'application/json';\n    }\n    // No type could be inferred.\n    return null;\n  }\n\n  clone(): HttpRequest<T>;\n  clone(update: {\n    headers?: HttpHeaders,\n    context?: HttpContext,\n    reportProgress?: boolean,\n    params?: HttpParams,\n    responseType?: 'arraybuffer'|'blob'|'json'|'text',\n    withCredentials?: boolean,\n    body?: T|null,\n    method?: string,\n    url?: string,\n    setHeaders?: {[name: string]: string|string[]},\n    setParams?: {[param: string]: string},\n  }): HttpRequest<T>;\n  clone<V>(update: {\n    headers?: HttpHeaders,\n    context?: HttpContext,\n    reportProgress?: boolean,\n    params?: HttpParams,\n    responseType?: 'arraybuffer'|'blob'|'json'|'text',\n    withCredentials?: boolean,\n    body?: V|null,\n    method?: string,\n    url?: string,\n    setHeaders?: {[name: string]: string|string[]},\n    setParams?: {[param: string]: string},\n  }): HttpRequest<V>;\n  clone(update: {\n    headers?: HttpHeaders,\n    context?: HttpContext,\n    reportProgress?: boolean,\n    params?: HttpParams,\n    responseType?: 'arraybuffer'|'blob'|'json'|'text',\n    withCredentials?: boolean,\n    body?: any|null,\n    method?: string,\n    url?: string,\n    setHeaders?: {[name: string]: string|string[]},\n    setParams?: {[param: string]: string};\n  } = {}): HttpRequest<any> {\n    // For method, url, and responseType, take the current value unless\n    // it is overridden in the update hash.\n    const method = update.method || this.method;\n    const url = update.url || this.url;\n    const responseType = update.responseType || this.responseType;\n\n    // The body is somewhat special - a `null` value in update.body means\n    // whatever current body is present is being overridden with an empty\n    // body, whereas an `undefined` value in update.body implies no\n    // override.\n    const body = (update.body !== undefined) ? update.body : this.body;\n\n    // Carefully handle the boolean options to differentiate between\n    // `false` and `undefined` in the update args.\n    const withCredentials =\n        (update.withCredentials !== undefined) ? update.withCredentials : this.withCredentials;\n    const reportProgress =\n        (update.reportProgress !== undefined) ? update.reportProgress : this.reportProgress;\n\n    // Headers and params may be appended to if `setHeaders` or\n    // `setParams` are used.\n    let headers = update.headers || this.headers;\n    let params = update.params || this.params;\n\n    // Pass on context if needed\n    const context = update.context ?? this.context;\n\n    // Check whether the caller has asked to add headers.\n    if (update.setHeaders !== undefined) {\n      // Set every requested header.\n      headers =\n          Object.keys(update.setHeaders)\n              .reduce((headers, name) => headers.set(name, update.setHeaders![name]), headers);\n    }\n\n    // Check whether the caller has asked to set params.\n    if (update.setParams) {\n      // Set every requested param.\n      params = Object.keys(update.setParams)\n                   .reduce((params, param) => params.set(param, update.setParams![param]), params);\n    }\n\n    // Finally, construct the new HttpRequest using the pieces from above.\n    return new HttpRequest(method, url, body, {\n      params,\n      headers,\n      context,\n      reportProgress,\n      responseType,\n      withCredentials,\n    });\n  }\n}\n"]}