Files
apidash/lib/codegen/php/curl.dart
2024-03-18 00:10:33 +05:30

352 lines
9.4 KiB
Dart

import 'dart:convert';
import 'package:jinja/jinja.dart' as jj;
import 'package:apidash/utils/utils.dart'
show getNewUuid, getValidRequestUri, requestModelToHARJsonRequest;
import 'package:apidash/models/models.dart' show RequestModel;
import 'package:apidash/consts.dart';
class PHPcURLCodeGen {
final String kTemplateStart = """
<?php
""";
final String kTemplateUri = """
\$uri = "{{uri}}";
""";
//defining query parameters
String kTemplateParams = """
\$queryParams = [{{params}}];
\$queryString = "?" . http_build_query(\$queryParams);
if (count(\$queryParams) > 0) {
\$uri .= \$queryString;
}
""";
//initialising the request
String kTemplateRequestInit = """
\$request = curl_init(\$uri);
""";
String kTemplateBody = """
\$request_body = <<<EOF
{{body}}
EOF;
""";
//specifying headers
String kTemplateHeaders = """
\$headers = [{{headers}}];
curl_setopt(\$request, CURLOPT_HTTPHEADER, \$headers);
""";
String kTemplateFormHeaderContentType = '''
multipart/form-data; boundary={{boundary}}''';
String kTemplateRequest = """
curl_setopt(\$request, CURLOPT_RETURNTRANSFER, 1);
curl_setopt(\$request, {{method}}, 1);
""";
//passing the request body
String kStringRequestBody = """
curl_setopt(\$request, CURLOPT_POSTFIELDS, \$request_body);
""";
//ending template
final String kStringRequestEnd = """
\$response = curl_exec(\$request);
curl_close(\$request);
var_dump(\$response);
""";
//template for generating unique boundary
String kBoundaryUniqueIdTemplate = """
\$boundary = "{{uuid}}";
""";
//
String kFileClassString = """
class File
{
public string \$name;
public string \$filename;
public string \$content;
function __construct(\$name, \$filename)
{
\$this->name = \$name;
\$this->filename = \$filename;
\$available_content = file_get_contents(\$this->filename);
\$this->content = \$available_content ? \$available_content : "";
}
}
""";
//function to build formdata without 'file' type
String kBuildFormDataFunctionWithoutFilesString = """
function build_data(\$boundary, \$fields)
{
\$data = '';
\$eol = "\\r\\n";
\$delimiter = '-------------' . \$boundary;
foreach (\$fields as \$name => \$content) {
\$data .= "--" . \$delimiter . \$eol
. 'Content-Disposition: form-data; name="' . \$name . "\\"" . \$eol . \$eol
. \$content . \$eol;
}
\$data .= "--" . \$delimiter . "--" . \$eol;
return \$data;
}
""";
//function to build formdata with 'file' type
String kBuildFormDataFunctionWithFilesString = """
function build_data_files(\$boundary, \$fields, \$files)
{
\$data = '';
\$eol = "\\r\\n";
\$delimiter = '-------------' . \$boundary;
foreach (\$fields as \$name => \$content) {
\$data .= "--" . \$delimiter . \$eol
. 'Content-Disposition: form-data; name="' . \$name . "\\"" . \$eol . \$eol
. \$content . \$eol;
}
foreach (\$files as \$uploaded_file) {
if (\$uploaded_file instanceof File) {
\$data .= "--" . \$delimiter . \$eol
. 'Content-Disposition: form-data; name="' . \$uploaded_file->name . '"; filename="' . \$uploaded_file->filename . '"' . \$eol
. 'Content-Transfer-Encoding: binary' . \$eol;
\$data .= \$eol;
\$data .= \$uploaded_file->content . \$eol;
}
}
\$data .= "--" . \$delimiter . "--" . \$eol;
return \$data;
}
""";
//
String kMultiPartBodyWithFiles = """
\$request_body = build_data_files(\$boundary, \$fields, \$files);
""";
//
String kMultiPartBodyWithoutFiles = """
\$request_body = build_data(\$boundary, \$fields);
""";
String? getCode(
RequestModel requestModel,
String defaultUriScheme,
) {
String uuid = getNewUuid();
uuid = uuid.replaceAll(RegExp(r'-'), "");
try {
String result = "";
bool hasHeaders = false;
bool hasQuery = false;
bool hasBody = false;
String url = requestModel.url;
if (!url.contains("://") && url.isNotEmpty) {
url = "$defaultUriScheme://$url";
}
var rec = getValidRequestUri(
url,
requestModel.enabledRequestParams,
);
Uri? uri = rec.$1;
//renders starting template
if (uri != null) {
var templateStart = jj.Template(kTemplateStart);
result += templateStart.render();
// if the request does not contain any file uploads, we do not need
// to add the class for File in the request
if (requestModel.hasFileInFormData) {
result += kFileClassString;
}
//adds the function to build formdata with or without 'file' type
if (requestModel.hasFormData) {
result += requestModel.hasFileInFormData
? kBuildFormDataFunctionWithFilesString
: kBuildFormDataFunctionWithoutFilesString;
}
var templateUri = jj.Template(kTemplateUri);
result += templateUri.render({"uri": url});
//checking and adding query params
if (uri.hasQuery) {
var params = uri.queryParameters;
if (params.isNotEmpty) {
hasQuery = true;
var templateParams = jj.Template(kTemplateParams);
// generating the map of key and value for the query parameters
List<String> queryList = [];
for (MapEntry<String, String> entry in params.entries) {
String entryStr = "\"${entry.key}\" => \"${entry.value}\"";
queryList.add(entryStr);
}
String paramsString = "\n ${queryList.join(",\n ")}\n";
result += templateParams.render({"params": paramsString});
}
}
// renders the initial request init function call
var templateRequestInit = jj.Template(kTemplateRequestInit);
result += templateRequestInit.render();
var harJson =
requestModelToHARJsonRequest(requestModel, useEnabled: true);
var headers = harJson["headers"];
//parses and adds the headers
if (headers.isNotEmpty || requestModel.hasFormData) {
var templateHeader = jj.Template(kTemplateHeaders);
var m = {};
for (var i in headers) {
m[i["name"]] = i["value"];
}
if (requestModel.hasFormData) {
// we will override any existing boundary and use our own boundary
m['Content-Type'] =
"multipart/form-data; boundary=-------------$uuid";
var boundaryUniqueIdTemplate =
jj.Template(kBoundaryUniqueIdTemplate);
result += boundaryUniqueIdTemplate.render({"uuid": uuid});
var fieldsString = '\$fields = [\n';
var filesString = '\$files = [\n';
for (var formData in requestModel.formDataMapList) {
if (formData['type'] == 'text') {
// the four spaces on the left hand side are for indentation, hence do not remove
fieldsString +=
' "${formData['name']}" => "${formData['value']}",\n';
} else if (formData['type'] == 'file') {
filesString +=
' new File("${formData['name']}", "${formData['value']}"),\n';
}
}
fieldsString += '];\n';
filesString += '];\n';
result += fieldsString;
if (requestModel.hasFileInFormData) {
result += filesString;
result += kMultiPartBodyWithFiles;
} else {
result += kMultiPartBodyWithoutFiles;
}
}
var headersString = '\n';
m.forEach((key, value) {
headersString += "\t\t\t\t'$key: $value', \n";
});
result += templateHeader.render({
"headers": headersString,
});
}
// contains the HTTP method associated with the request
var method = requestModel.method;
// contains the entire request body as a string if body is present
var requestBody = requestModel.requestBody;
//renders the request body
if (kMethodsWithBody.contains(method) && requestBody != null) {
var contentLength = utf8.encode(requestBody).length;
if (contentLength > 0) {
hasBody = true;
var templateBody = jj.Template(kTemplateBody);
result += templateBody.render({"body": requestBody});
}
}
//renders the request temlate
var templateRequest = jj.Template(kTemplateRequest);
result += templateRequest.render({
"authority": uri.authority,
"method": httpMethod(method.name.toUpperCase()),
"path": uri.path,
"queryParamsStr": hasQuery ? "queryParamsStr" : "",
});
if (hasBody || requestModel.hasFormData) {
result += kStringRequestBody;
}
//and of the request
result += kStringRequestEnd;
}
return result;
} catch (e) {
return null;
}
}
//function for http verb to curl mapping
String httpMethod(String methodName) {
switch (methodName) {
case "POST":
return "CURLOPT_POST";
case "GET":
return "CURLOPT_HTTPGET";
case "PUT":
return "CURLOPT_PUT";
case "DELETE":
return "CURLOPT_CUSTOMREQUEST";
case "PATCH":
return "CURLOPT_CUSTOMREQUEST";
case "HEAD":
return "CURLOPT_NOBODY";
default:
return "";
}
}
}