From b80ab2b1c60061525be18b2fd08ed0264f05338f Mon Sep 17 00:00:00 2001
From: Anya Stasiuk <stasiukanya@gmail.com>
Date: Wed, 7 Oct 2020 13:53:31 +0300
Subject: [PATCH] feat: make dropdown to switch between code samples

---
 src/common-elements/tabs.ts                   |   4 +-
 .../RequestSamples/RequestSamples.tsx         | 110 ++++++++++++++----
 .../RequestSamples/styled.elements.ts         |  26 +++++
 3 files changed, 117 insertions(+), 23 deletions(-)
 create mode 100644 src/components/RequestSamples/styled.elements.ts

diff --git a/src/common-elements/tabs.ts b/src/common-elements/tabs.ts
index 1c4ef1b9..a5171dea 100644
--- a/src/common-elements/tabs.ts
+++ b/src/common-elements/tabs.ts
@@ -6,7 +6,7 @@ import styled from '../styled-components';
 export { Tab, TabList, TabPanel } from 'react-tabs';
 
 export const Tabs = styled(ReactTabs)`
-  > ul {
+  .react-tabs__tab-list {
     list-style: none;
     padding: 0;
     margin: 0;
@@ -101,7 +101,7 @@ export const SmallTabs = styled(Tabs)`
   > .react-tabs__tab-panel {
     & > div,
     & > pre {
-      padding: ${props => props.theme.spacing.unit * 2}px 0;
+      padding: ${(props) => props.theme.spacing.unit * 2}px 0;
     }
   }
 `;
diff --git a/src/components/RequestSamples/RequestSamples.tsx b/src/components/RequestSamples/RequestSamples.tsx
index 89b12d74..6884a99b 100644
--- a/src/components/RequestSamples/RequestSamples.tsx
+++ b/src/components/RequestSamples/RequestSamples.tsx
@@ -1,52 +1,120 @@
 import { observer } from 'mobx-react';
 import * as React from 'react';
-import { isPayloadSample, OperationModel, RedocNormalizedOptions } from '../../services';
+import {
+  isPayloadSample,
+  OperationModel,
+  RedocNormalizedOptions,
+  XPayloadSample,
+} from '../../services';
 import { PayloadSamples } from '../PayloadSamples/PayloadSamples';
 import { SourceCodeWithCopy } from '../SourceCode/SourceCode';
 
-import { RightPanelHeader, Tab, TabList, TabPanel, Tabs } from '../../common-elements';
+import {
+  DropdownOption,
+  RightPanelHeader,
+  Tab,
+  TabList,
+  TabPanel,
+  Tabs,
+} from '../../common-elements';
 import { OptionsContext } from '../OptionsProvider';
+import { SamplesDropdown, Flex } from './styled.elements';
 
 export interface RequestSamplesProps {
   operation: OperationModel;
 }
 
+interface RequestSamplesState {
+  codeSampleIdx: number;
+  tabIndex: number;
+}
+
 @observer
-export class RequestSamples extends React.Component<RequestSamplesProps> {
+export class RequestSamples extends React.Component<RequestSamplesProps, RequestSamplesState> {
   static contextType = OptionsContext;
   context: RedocNormalizedOptions;
   operation: OperationModel;
 
+  state = {
+    codeSampleIdx: 0,
+    tabIndex: 0,
+  };
+
+  handleChangeLang = (option: DropdownOption, updatedTabIndex: number) => {
+    this.setState({
+      codeSampleIdx: option.idx,
+    });
+    if (this.state.tabIndex !== updatedTabIndex) {
+      this.setState({
+        tabIndex: updatedTabIndex,
+      });
+    }
+  };
+
+  handleChangeTab = (index: number) => {
+    this.setState({
+      tabIndex: index,
+    });
+  };
+
   render() {
     const { operation } = this.props;
     const samples = operation.codeSamples;
 
     const hasSamples = samples.length > 0;
     const hideTabList = samples.length === 1 ? this.context.hideSingleRequestSampleTab : false;
+
+    const payloadSample = samples.find((sample) => isPayloadSample(sample));
+    const codeSamples = samples.filter((sample) => !isPayloadSample(sample));
+    const isCodeSamples = codeSamples.length > 0;
+    const options = isCodeSamples
+      ? codeSamples.map((codeSample, idx) => {
+          return {
+            idx,
+            value: codeSample.label || codeSample.lang,
+          };
+        })
+      : [];
+
     return (
       (hasSamples && (
         <div>
           <RightPanelHeader> Request samples </RightPanelHeader>
-
-          <Tabs defaultIndex={0}>
-            <TabList hidden={hideTabList}>
-              {samples.map(sample => (
-                <Tab key={sample.lang + '_' + (sample.label || '')}>
-                  {sample.label !== undefined ? sample.label : sample.lang}
-                </Tab>
-              ))}
-            </TabList>
-            {samples.map(sample => (
-              <TabPanel key={sample.lang + '_' + (sample.label || '')}>
-                {isPayloadSample(sample) ? (
-                  <div>
-                    <PayloadSamples content={sample.requestBodyContent} />
-                  </div>
-                ) : (
-                  <SourceCodeWithCopy lang={sample.lang} source={sample.source} />
+          <Tabs selectedIndex={this.state.tabIndex} onSelect={this.handleChangeTab}>
+            <Flex>
+              <TabList hidden={hideTabList}>
+                {payloadSample && (
+                  <Tab>
+                    {payloadSample.label !== undefined ? payloadSample.label : payloadSample.lang}
+                  </Tab>
                 )}
+                {isCodeSamples && <Tab>Code samples</Tab>}
+              </TabList>
+              {isCodeSamples && (
+                <SamplesDropdown
+                  value={options[this.state.codeSampleIdx].value}
+                  onChange={(option: DropdownOption) =>
+                    this.handleChangeLang(option, payloadSample ? 1 : 0)
+                  }
+                  options={options}
+                />
+              )}
+            </Flex>
+            {payloadSample && (
+              <TabPanel>
+                <div>
+                  <PayloadSamples content={(payloadSample as XPayloadSample).requestBodyContent} />
+                </div>
               </TabPanel>
-            ))}
+            )}
+            {isCodeSamples && (
+              <TabPanel>
+                <SourceCodeWithCopy
+                  lang={codeSamples[this.state.codeSampleIdx].lang}
+                  source={codeSamples[this.state.codeSampleIdx].source}
+                />
+              </TabPanel>
+            )}
           </Tabs>
         </div>
       )) ||
diff --git a/src/components/RequestSamples/styled.elements.ts b/src/components/RequestSamples/styled.elements.ts
new file mode 100644
index 00000000..b63870b1
--- /dev/null
+++ b/src/components/RequestSamples/styled.elements.ts
@@ -0,0 +1,26 @@
+import styled from '../../styled-components';
+import { InvertedSimpleDropdown } from '../PayloadSamples/styled.elements';
+import { darken } from 'polished';
+
+export const Flex = styled.div`
+  display: flex;
+  justify-content: space-between;
+`;
+
+export const SamplesDropdown = styled(InvertedSimpleDropdown)`
+  && {
+    background-color: ${({ theme }) => theme.codeBlock.backgroundColor};
+    height: 33px;
+    padding: 6px 10px;
+    border: 1px solid ${({ theme }) => darken(0.05, theme.codeBlock.backgroundColor)};
+    border-radius: 5px;
+    &:hover,
+    &:focus-within {
+      border: 1px solid ${({ theme }) => darken(0.05, theme.codeBlock.backgroundColor)};
+      box-shadow: none;
+    }
+    &:focus-within {
+      background-color: ${({ theme }) => theme.codeBlock.backgroundColor};
+    }
+  }
+`;