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index.js
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index.js
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'use strict'
const fs = require('fs');
var swaggerUi = require('swagger-ui-dist')
var favIconHtml = '<link rel="icon" type="image/png" href="./favicon-32x32.png" sizes="32x32" />' +
'<link rel="icon" type="image/png" href="./favicon-16x16.png" sizes="16x16" />'
var swaggerInit = ''
var htmlTplString = `
<!-- HTML for static distribution bundle build -->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title><% title %></title>
<link rel="stylesheet" type="text/css" href="./swagger-ui.css" >
<% favIconString %>
<% customJs %>
<style>
html
{
box-sizing: border-box;
overflow: -moz-scrollbars-vertical;
overflow-y: scroll;
}
*,
*:before,
*:after
{
box-sizing: inherit;
}
body {
margin:0;
background: #fafafa;
}
</style>
</head>
<body>
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" style="position:absolute;width:0;height:0">
<defs>
<symbol viewBox="0 0 20 20" id="unlocked">
<path d="M15.8 8H14V5.6C14 2.703 12.665 1 10 1 7.334 1 6 2.703 6 5.6V6h2v-.801C8 3.754 8.797 3 10 3c1.203 0 2 .754 2 2.199V8H4c-.553 0-1 .646-1 1.199V17c0 .549.428 1.139.951 1.307l1.197.387C5.672 18.861 6.55 19 7.1 19h5.8c.549 0 1.428-.139 1.951-.307l1.196-.387c.524-.167.953-.757.953-1.306V9.199C17 8.646 16.352 8 15.8 8z"></path>
</symbol>
<symbol viewBox="0 0 20 20" id="locked">
<path d="M15.8 8H14V5.6C14 2.703 12.665 1 10 1 7.334 1 6 2.703 6 5.6V8H4c-.553 0-1 .646-1 1.199V17c0 .549.428 1.139.951 1.307l1.197.387C5.672 18.861 6.55 19 7.1 19h5.8c.549 0 1.428-.139 1.951-.307l1.196-.387c.524-.167.953-.757.953-1.306V9.199C17 8.646 16.352 8 15.8 8zM12 8H8V5.199C8 3.754 8.797 3 10 3c1.203 0 2 .754 2 2.199V8z"/>
</symbol>
<symbol viewBox="0 0 20 20" id="close">
<path d="M14.348 14.849c-.469.469-1.229.469-1.697 0L10 11.819l-2.651 3.029c-.469.469-1.229.469-1.697 0-.469-.469-.469-1.229 0-1.697l2.758-3.15-2.759-3.152c-.469-.469-.469-1.228 0-1.697.469-.469 1.228-.469 1.697 0L10 8.183l2.651-3.031c.469-.469 1.228-.469 1.697 0 .469.469.469 1.229 0 1.697l-2.758 3.152 2.758 3.15c.469.469.469 1.229 0 1.698z"/>
</symbol>
<symbol viewBox="0 0 20 20" id="large-arrow">
<path d="M13.25 10L6.109 2.58c-.268-.27-.268-.707 0-.979.268-.27.701-.27.969 0l7.83 7.908c.268.271.268.709 0 .979l-7.83 7.908c-.268.271-.701.27-.969 0-.268-.269-.268-.707 0-.979L13.25 10z"/>
</symbol>
<symbol viewBox="0 0 20 20" id="large-arrow-down">
<path d="M17.418 6.109c.272-.268.709-.268.979 0s.271.701 0 .969l-7.908 7.83c-.27.268-.707.268-.979 0l-7.908-7.83c-.27-.268-.27-.701 0-.969.271-.268.709-.268.979 0L10 13.25l7.418-7.141z"/>
</symbol>
<symbol viewBox="0 0 24 24" id="jump-to">
<path d="M19 7v4H5.83l3.58-3.59L8 6l-6 6 6 6 1.41-1.41L5.83 13H21V7z"/>
</symbol>
<symbol viewBox="0 0 24 24" id="expand">
<path d="M10 18h4v-2h-4v2zM3 6v2h18V6H3zm3 7h12v-2H6v2z"/>
</symbol>
</defs>
</svg>
<div id="swagger-ui"></div>
<script src="./swagger-ui-bundle.js"> </script>
<script src="./swagger-ui-standalone-preset.js"> </script>
<script src="./swagger-ui-init.js"> </script>
<% customCssUrl %>
<style>
<% customCss %>
</style>
</body>
</html>
`
var jsTplString = `
window.onload = function() {
// Build a system
var url = window.location.search.match(/url=([^&]+)/);
if (url && url.length > 1) {
url = decodeURIComponent(url[1]);
} else {
url = window.location.origin;
}
<% swaggerOptions %>
url = options.swaggerUrl || url
var urls = options.swaggerUrls
var customOptions = options.customOptions
var spec1 = options.swaggerDoc
var swaggerOptions = {
spec: spec1,
url: url,
urls: urls,
dom_id: '#swagger-ui',
deepLinking: true,
presets: [
SwaggerUIBundle.presets.apis,
SwaggerUIStandalonePreset
],
plugins: [
SwaggerUIBundle.plugins.DownloadUrl
],
layout: "StandaloneLayout"
}
for (var attrname in customOptions) {
swaggerOptions[attrname] = customOptions[attrname];
}
var ui = SwaggerUIBundle(swaggerOptions)
if (customOptions.oauth) {
ui.initOAuth(customOptions.oauth)
}
if (customOptions.authAction) {
ui.authActions.authorize(customOptions.authAction)
}
window.ui = ui
}
`
var generateHTML = function (swaggerDoc, opts, options, customCss, customfavIcon, swaggerUrl, customSiteTitle, _htmlTplString, _jsTplString) {
var isExplorer
var customJs
var swaggerUrls
var customCssUrl
if (opts && typeof opts === 'object') {
options = opts.swaggerOptions
customCss = opts.customCss
customJs = opts.customJs
customfavIcon = opts.customfavIcon
swaggerUrl = opts.swaggerUrl
swaggerUrls = opts.swaggerUrls
isExplorer = opts.explorer || !!swaggerUrls
customSiteTitle = opts.customSiteTitle
customCssUrl = opts.customCssUrl
} else {
//support legacy params based function
isExplorer = opts
}
options = options || {}
var explorerString = isExplorer ? '' : '.swagger-ui .topbar .download-url-wrapper { display: none }'
customCss = explorerString + ' ' + customCss || explorerString
customfavIcon = customfavIcon || false
customSiteTitle = customSiteTitle || 'Swagger UI'
_htmlTplString = _htmlTplString || htmlTplString
_jsTplString = _jsTplString || jsTplString
var favIconString = customfavIcon ? '<link rel="icon" href="' + customfavIcon + '" />' : favIconHtml
var htmlWithCustomCss = _htmlTplString.toString().replace('<% customCss %>', customCss)
var htmlWithFavIcon = htmlWithCustomCss.replace('<% favIconString %>', favIconString)
var htmlWithCustomJs = htmlWithFavIcon.replace('<% customJs %>', customJs ? `<script src="${customJs}"></script>` : '')
var htmlWithCustomCssUrl = htmlWithCustomJs.replace('<% customCssUrl %>', customCssUrl ? `<link href="${customCssUrl}" rel="stylesheet">` : '')
var initOptions = {
swaggerDoc: swaggerDoc || undefined,
customOptions: options,
swaggerUrl: swaggerUrl || undefined,
swaggerUrls: swaggerUrls || undefined
}
swaggerInit = _jsTplString.toString().replace('<% swaggerOptions %>', stringify(initOptions))
return htmlWithCustomCssUrl.replace('<% title %>', customSiteTitle)
}
var stringify = function (obj, prop) {
var placeholder = '____FUNCTIONPLACEHOLDER____'
var fns = []
var json = JSON.stringify(obj, function (key, value) {
if (typeof value === 'function') {
fns.push(value)
return placeholder
}
return value
}, 2)
json = json.replace(new RegExp('"' + placeholder + '"', 'g'), function (_) {
return fns.shift()
})
return 'var options = ' + json + ';'
}
var setup = function (swaggerDoc) {
return function (event, context, callback) {
console.log("incoming event=" + JSON.stringify(event));
// forward if there is no trailing slash
if (event.path.endsWith("/api-docs")) {
callback(null, {
"statusCode": 301,
"isBase64Encoded": false,
"headers": {
"Location": "api-docs/"
}
});
return;
}
var startIndex = event.path.indexOf("/api-docs/");
if (startIndex == -1) {
callback(null, {
"statusCode": 404,
"isBase64Encoded": false,
"headers": {
"content-type": "text/plain"
},
"body": "not found"
});
return;
}
var apipath = event.path.substring(startIndex + 10);
console.log("Request for API DOCS: " + apipath);
// serve swagger-ui-init.js
if (apipath == 'swagger-ui-init.js') {
var options = {
"swaggerUrl": "interface.yaml"
};
callback(null, {
"statusCode": 200,
"isBase64Encoded": false,
"headers": {
"content-type": "application/javascript"
},
"body": jsTplString.toString().replace('<% swaggerOptions %>', "options=" + JSON.stringify(options) + ";")
});
return;
}
// serve index.html
if (apipath == '' || apipath == 'index.html') {
callback(null, {
"statusCode": 200,
"isBase64Encoded": false,
"headers": {
"content-type": "text/html"
},
"body": generateHTML("interface.yaml")
});
return;
}
var filename = undefined;
// serve individual yaml file
if (apipath == 'interface.yaml') {
console.log("Request for the individual interface yaml. Returning string of length " + swaggerDoc.length);
callback(null, {
"statusCode": 200,
"isBase64Encoded": true,
"headers": {
"content-type": "text/yaml"
},
"body": Buffer.from(swaggerDoc).toString('base64')
});
return;
}
// serve all other files
var filename = apipath;
var contentType = "text/plain";
if (filename.endsWith(".js")) {
contentType = "application/javascript";
} else if (filename.endsWith(".html")) {
contentType = "text/html";
} else if (filename.endsWith(".png")) {
contentType = "image/png";
} else if (filename.endsWith(".css")) {
contentType = "text/css";
}
console.log("Going to read file " + filename);
const absolutePath = swaggerUi.getAbsoluteFSPath();
console.log("using absolute path: " + absolutePath);
fs.readFile(absolutePath + "/" + filename, (err, data) => {
if (err) {
console.log("Error reading file " + err);
callback(null, {
"statusCode": 404,
"isBase64Encoded": false,
"headers": {
"content-type": "text/plain"
},
"body": "not found"
});
return;
}
console.log("Read file successfully. length=" + data.length);
callback(null, {
"statusCode": 200,
"isBase64Encoded": true,
"headers": {
"content-type": contentType
},
"body": Buffer.from(data).toString("base64")
});
});
}
};
module.exports = {
setup: setup,
generateHTML: generateHTML
}